USER'S INFORMATION MANUAL

Transcription

1 USER'S INFORMATION MANUAL LGH/LCH036, 048, 060, 072 (3, 4, 5 & 6 Tons) This book includes the following manuals: UNIT INSTALLATION INSTRUCTIONS OWNER'S MANUAL AGENCY MANUAL IMC MANUAL ECONOMIZER INSTRUCTIONS IMC MODULE INSTRUCTIONS (LONTALK GATEWAY) IMC MODULE INSTRUCTIONS (LONTALK PRODIGY) WARRANTY W-022-L3

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3 Litho U.S.A WARNING Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a licensed professional HVAC installer or equivalent, service agency, or the gas supplier INSTALLATION INSTRUCTIONS LGH/LCH036, 048, 060 & 072 3, 4, 5 and 6 Ton GAS AND COOLING PACKAGED UNITS /2014 Supersedes 8/2014 Table Of Contents Dimensions... Page 2 Parts Arrangements... Page 3 Shipping and Packing List... Page 4 General... Page 4 Requirements... Page 4 Unit Support... Page 5 Duct Connection... Page 5 Rigging Unit For Lifting... Page 5 Horizontal Air Discharge... Page 6 Condensate Drains... Page 6 Gas Piping... Page 8 Pressure Test Gas Piping... Page 9 High Altitude Derate... Page 9 Electrical Connections... Page 9 Blower Operation and Adjustments... Page 12 Cooling Start-Up... Page 28 Cooling Operation... Page 38 Gas Heat Start-Up... Page 39 Heating Operation and Adjustments... Page 40 Electric Heat Start-Up... Page 40 Advanced Air Flow Control Start-Up... Page 41 Hot Gas Reheat Startup... Page 43 Service... Page 44 Factory Unit Controller Settings... Page 48 CAUTION Danger of sharp metallic edges. Can cause injury. Take care when servicing unit to avoid accidental contact with sharp edges. RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE LG SHOWN

4 LGH/LCH036, 048, 060, & 072 DIMENSIONS in. - Gas heat section shown 5 5/8 (143) 11 (279) 16 1/4 (413) 18 (457) 47 (1194) BASE AA 7 (178) BOTTOM RETURN AIR OPENING 29 (737) DD BOTTOM SUPPLY AIR OPENING 6 5/8 (168) CENTER OF GRAVITY 5 (127) 20 (508) FF 26 1/2 (673) BOTTOM CONDENSATE OUTLET TOP VIEW (Base) 25 3/4 (654) 9 1/2 (241) EE BOTTOM POWER ENTRY 3 X 8 (76 X 203) BB CC 45 (1143) 83 1/4 (2115) 1 (25) 38 7/8 (987) 036 thru /8 (1191) 060 thru /8 (899) 036 thru /8 (1102) 060 thru /2 (89) CONDENSATE OUTLET (EITHER SIDE) FLUE/VENT OUTLET 5 1/2 (140) ELECTRICAL INLET GAS INLET 15 (381) 1 (25) 47 (1194) BASE END VIEW LIFTING HOLES (For rigging) 26 1/2 (673) 85 1/4 (2165) BASE SIDE VIEW 27 (686) 19 1/2 (495) 18 3/8 (467) 11 (279) 2 (51) 38-7/8 (987) 036 thru /8 (1191) 060 thru (508) 29 (737) FORKLIFT SLOTS (Front, Back and Blower End) HORIZONTAL SUPPLY AIR OPENING BACK VIEW 85-1/4 (2165) BASE 5 1/2 HORIZONTAL RETURN AIR (140) OPENING (Without Economizer) 5 1/2 (140) Page 2 LGH/LCH036, 048, 060, 072

5 LGH036, 048, 060, & 072 PARTS ARRANGEMENT FILTERS (4) 036, 048:16 X 20 X 2 060, 072: 20 X 20 X 2 EVAPORATOR COIL REHEAD COIL (OPTIONAL) TXV BLOWER MOTOR (BELT DRIVE SHOWN) CONDENSER FAN ECONOMIZER (OPTIONAL) BLOWER COIL GUARDS (OPTIONAL) CONDENSATE DRAIN COMBUSTION AIR INDUCER BURNERS GAS VALVE UNIT CONTROLLER COMPRESSOR CONDENSER COIL LCH036, 048, 060, & 072 PARTS ARRANGEMENT EVAPORATOR COIL FILTERS (4) 036, 048:16 X 20 X 2 060, 072: 20 X 20 X 2 REHEAT COIL (OPTIONAL) TXV CONDENSER FAN BLOWER ECONOMIZER (OPTIONAL) CONDENSER COIL CONDENSATE DRAIN BLOWER MOTOR (BELT DRIVE SHOWN) ELECTRIC HEAT (Optional) UNIT CONTROLLER COMPRESSOR LGH/LCH036, 048, 060, 072 Page 3

6 Shipping and Packing List Package 1 of 1 contains: 1- Assembled unit Check unit for shipping damage. Receiving party should contact last carrier immediately if shipping damage is found. General These instructions are intended as a general guide and do not supersede local codes in any way. Authorities having jurisdiction should be consulted before installation. The LGH units are available in three heating inputs. The LCH cooling packaged rooftop unit is the same basic design as the LGH unit except for the heating section. Optional electric heat is available for LCH units. LGH and LCH units have identical refrigerant circuits with respective 3, 4, 5, and 6 ton cooling capacities. Units come standard with a lightweight, all-aluminum condenser coil. Units are also available with an optional fin/tube condenser coil. In addition to standard heating and cooling, hot gas reheat units provide a dehumidifying mode of operation. Refer to Reheat Operation section. Units may be equipped with a Unit Controller that is factory-configured for Advanced Air Flow Control. This option allows the installer to enter both the design-specified supply air CFM and outdoor air CFM. See the Advanced Air Flow Control Start-Up section. These units are equipped with a variable speed, direct drive blower and an economizer. Availability of units and options varies by brand. Requirements See figure 1 for unit clearances. WARNING Electric shock hazard and danger of explosion. Can cause injury, death or product or property damage. Turn off gas and electrical power to unit before performing any maintenance or servicing operations on the unit. Follow lighting instructions attached to unit when putting unit back into operation and after service or maintenance. IMPORTANT The Clean Air Act of 1990 bans the intentional venting of refrigerant (CFC's and HCFC's) as of July 1, Approved methods of recovery, recycling or reclaiming must be followed. Fines and/or incarceration may be levied for non-compliance. Page 4 NOTICE Roof Damage! This system contains both refrigerant and oil. Some rubber roofing material may absorb oil, causing the rubber to swell. Bubbles in the rubber roofing material can cause leaks. Protect the roof surface to avoid exposure to refrigerant and oil during service and installation. Failure to follow this notice could result in damage to roof surface. 1 Unit Clearance Service Clearance D Clearance to Combustibles Minimum Operation Clearance UNIT CLEARANCES A in.(mm) 48 (1219) 36 (914) 36 (914) A C FIGURE 1 B in.(mm) 36 (914) 1 (25) 36 (914) C in.(mm) 36 (914) 1 (25) 36 (914) LGH/LCH036, 048, 060, 072 B D in.(mm) 36 (914) 1 (25) 36 (914) Top Clearance Unobstructed Unobstructed Unobstructed Note - Entire perimeter of unit base requires support when elevated above mounting surface. 1 Service Clearance - Required for removal of serviceable parts. Clearance to Combustibles - Required clearance to combustible material (gas units). Minimum Operation Clearance - Required clearance for proper unit operation. Use of this unit as a construction heater or air conditioner is not recommended during any phase of construction. Very low return air temperatures, harmful vapors and operation of the unit with clogged or misplaced filters will damage the unit. If this unit has been used for heating or cooling of buildings or structures under construction, the following conditions must be met or the warranty will be void: A room thermostat must control the unit. The use of fixed jumpers that will provide continuous heating or cooling is not allowed. A pre-filter must be installed at the entry to the return air duct. The return air duct must be provided and sealed to the unit. Return air temperature range between 55 F (13 C) and 80 F (27 C) must be maintained.

7 Air filters must be replaced and pre-filters must be removed upon construction completion. The input rate and temperature rise must be set per the unit rating plate. The heat exchanger, components, duct system, air filters and evaporator coil must be thoroughly cleaned following final construction clean-up. The unit operating conditions (including airflow, cooling operation, ignition, input rate, temperature rise and venting) must be verified according to these installation instructions. Unit Support In downflow discharge installations, install the unit on a non-combustible surface only. Unit may be installed on combustible surfaces when used in horizontal discharge applications or in downflow discharge applications when installed on an T1CURB / C1CURB / E1CURB roof mounting frame. NOTE - Securely fasten roof frame to roof per local codes. A-Downflow Discharge Application Roof Mounting with T1CURB / C1CURB / E1CURB 1- The roof mounting frame must be installed, flashed and sealed in accordance with the instructions provided with the frame. 2- The roof mounting frame should be square and level to 1/16 per linear foot (5mm per linear meter) in any direction. 5- Units require support along all four sides of unit base. Supports must be constructed of steel or suitably treated wood materials. NOTE-When installing a unit on a combustible surface for downflow discharge applications, a T1CURB / C1CURB / E1CURB roof mounting frame is required. B-Horizontal Discharge Applications 1- Units which are equipped with an optional economizer and installed in horizontal airflow applications must use a horizontal conversion kit. 2- Specified installation clearances must be maintained when installing units. Refer to figure Top of support slab should be approximately 4 (102mm) above the finished grade and located so no run-off water from higher ground can collect around the unit. 4- Units require support along all four sides of unit base. Supports must be constructed of steel or suitably treated wood materials. Duct Connection All exterior ducts, joints and openings in roof or building walls must be insulated and weather-proofed with flashing and sealing compounds in accordance with applicable codes. Any duct passing through an unconditioned space must be insulated. 3- Duct must be attached to the roof mounting frame and not to the unit; supply and return plenums must be installed before setting the unit. Installer's Roof Mounting Frame Many types of roof frames can be used to install the unit depending upon different roof structures. Items to keep in mind when using the building frame or supports are: 1- The base is fully enclosed and insulated, so an enclosed frame is not required. 2- The frames or supports must be constructed with non-combustible materials and should be square and level to 1/16 per linear foot (5mm per linear meter) in any direction. 3- Frame or supports must be high enough to prevent any form of moisture from entering unit. Recommended minimum frame height is 14 (356mm). 4- Duct must be attached to the roof mounting frame and not to the unit. Supply and return plenums must be installed before setting the unit. LGH/LCH036, 048, 060, 072 Page 5 CAUTION In downflow applications, do not drill or punch holes in base of unit. Leaking in roof may occur if unit base is punctured. Rigging Unit For Lifting Rig unit for lifting by attaching four cables to holes in unit base rail. See figure Detach wooden base protection before rigging. 2- Remove all six base protection brackets before setting unit. 3- Connect rigging to the unit base using both holes in each corner. 4- All panels must be in place for rigging. 5- Place field provided H style pick in place just above top edge of unit. Frame must be of adequate strength and length. (H-style pick prevents damage to unit.)

8 LG LC Unit *Weight Lbs. Kg *Maximum weight with all available factory-installed accessories. LIFTING POINT SHOULD BE DIRECTLY ABOVE CENTER OF GRAVITY IMPORTANT - ALL PANELS MUST BE IN PLACE FOR RIGGING. 5- Install return air duct beneath outdoor air intake. See figure 4. Install barometric relief damper in lower hood and install in ductwork as shown in figure 4. HORIZONTAL RETURN AIR DUCTWORK WITH ECONOMIZER UNIT HORIZONTAL RETURN AIR DUCT CAUTION - Do not walk on unit. FIGURE 2 Horizontal Air Discharge Unit is shipped with panels covering the horizontal supply and return air openings. Remove horizontal covers and place over downflow openings for horizontal air discharge. See figure 3. Secure in place with sheet metal screws. Units Equipped With An Optional Economizer 1- Remove the horizontal supply air cover and position over the downflow supply air opening. Secure with sheet metal screws. 2- Leave the horizontal return air cover in place. 3- Locate the separately ordered horizontal air discharge kit. Place the kit panel over the downflow return air opening. 4- Remove and retain the barometric relief dampers and lower hood. UNIT SUPPLY AND RETURN AIR OPENINGS HORIZONTAL RETURN AIR OPENING HORIZONTAL SUPPLY AIR OPENING INSTALL BAROMETRIC RELIEF DAMPERS AND HOOD IN RETURN AIR DUCT FIGURE 4 Condensate Drains Make drain connection to the drain coupling provided on unit. Older model units have a 3/4 N.P.T. coupling and newer model units have a 1 N.P.T. coupling. Note - The drain pan is made with a glass reinforced engineered plastic capable of withstanding typical joint torque but can be damaged with excessive force. Tighten pipe nipple hand tight and turn an additional quarter turn. A trap must be installed between drain connection and an open vent for proper condensate removal. See figure 5 or 6. It is sometimes acceptable to drain condensate onto the roof or grade; however, a tee should be fitted to the trap to direct condensate downward. The condensate line must be vented. Check local codes concerning condensate disposal. Refer to pages 1 and 2 for condensate drain location. CONDENSATE SIDE DRAIN CONNECTION CAULK AROUND CONDENSATE COUPLING NOTE - Allow clearance to open doors when installing condensate piping. Minimum Pitch 1 (25 mm) per OPEN VENT 10' (3 m) of line UNIT DOWNFLOW RETURN AIR OPENING FIGURE 3 DOWNFLOW SUPPLY AIR OPENING Page 6 Á Á Á FIGURE 5 MOUNTING FRAME LGH/LCH036, 048, 060, 072

9 CONDENSATE BOTTOM DRAIN CONNECTION UNIT 2- Lift the front edge of the drain pan and slide pan out of unit. See figure 9. REMOVE DRAIN PAN DRAIN PAN CAULK AROUND CONDENSATE COUPLING OPEN VENT MOUNTING FRAME Minimum Pitch 1 (25 mm) per 10' (3 m) of line FIGURE 6 Units are shipped with the drain coupling facing the front of the unit. Condensate can be drained from the back or bottom of the unit with the following modifications. The unit can be installed in either downflow or horizontal air discharge regardless of condensate drain location. Rear Drain Connection 1- Remove the condensate drain mullion. See figure 7. Remove the two panels on each side of the mullion. FIGURE 9 DRAIN PAN 3- Make sure the cap over the unit bottom drain hole is secure. 4- Rotate the drain pan until the downward slope is toward the back of the unit. Slide the drain pan back into the unit. Be careful not to dislodge the cap over the bottom drain hole. 5- From the back side of the unit, pull the drain pan coupling through the rear condensate opening. 6- Replace the condensate drain mullion. Bottom Drain Connection 1- Remove the condensate drain mullion. See figure Lift the front edge of the drain pan and slide pan out of unit. See figure Turn the drain pan upside down and drill a pilot hole through the bottom of the drain pan in the center of the coupling. See figure 10. FIGURE 7 CONDENSATE DRAIN MULLION Two hinge screws must be removed in addition to the mullion screws. See figure 8. UNITS WITH HINGED PANELS BOTTOM CONDENSATE DRAIN CAUTION: Be careful not to damage the coupling threads when drilling the hole. DRILL A PILOT HOLE IN CENTER OF COUPLING CONDENSATE DRAIN MULLION FIGURE 8 REMOVE TWO SCREWS After drilling the pilot hole, drill a 7/8 hole from the inside of the pan. FIGURE 10 LGH/LCH036, 048, 060, 072 Page 7

10 4- From the inside of the pan, use a Vari-Bit bit to enlarge the hole to 7/8. Do not damage coupling threads. 5- Remove the cap over the unit bottom drain hole. 6- Slide the drain pan back into the unit. 7- From the back side of the unit, pull the drain pan coupling through the rear condensate opening. 8- From the front side of the unit, move the drain pan until the bottom coupling settles into the unit bottom drain opening. Once in place, check to make sure the coupling is still positioned through the rear condensate drain hole. 9- Use a field-provided 3/4 plug to seal side drain connection. 10- Replace the condensate drain mullion. Connect Gas Piping (Gas Units) Before connecting field-provided piping, check with gas company or authorities having jurisdiction for local code requirements. When installing gas supply piping, length of run from gas meter must be considered in determining pipe size for 0.5 w.c. (.12kPa) maximum pressure drop. Do not use supply pipe smaller than unit gas connection. Operating pressures at the unit gas connection must be as shown in table 1. TABLE 1 OPERATING PRESSURE AT GAS CONNECTION w.c. Natural Gas LP / Propane Gas Min. Max. Min. Max When making piping connections a drip leg should be installed on vertical pipe runs to serve as a trap for sediment or condensate. A 1/8 N.P.T. plugged tap is located on gas valve for test gauge connection. Refer to Heating Start-Up section for tap location. Install a ground joint union between the gas control manifold and the main manual shut-off valve. See figure 11 for gas supply piping entering outside the unit. Figure 12 shows complete bottom gas entry piping. Compounds used on threaded joints of gas piping shall be resistant to the action of liquified petroleum gases. Do not use Teflon tape to seal gas piping. Use a moderate amount of pipe compound on the gas pipe only. Make sure the two end threads are bare. CAUTION If a flexible gas connector is required or allowed by the authority that has jurisdiction, black iron pipe shall be installed at the gas valve and extend outside the furnace cabinet. WARNING Do not exceed 600 in-lbs (50 ft.-lbs) torque when attaching the gas piping to the gas valve. IMPORTANT Compounds used on threaded joints of gas piping must be resistant to the actions of liquified petroleum gases. OUTSIDE OF UNIT GAS PIPE CONNECTION TO GAS SUPPLY GAS PIPING SUPPORT GROUND JOINT UNION MANUAL MAIN SHUT-OFF VALVE FIGURE 11 DRIP LEG TO GAS VALVE (REFER TO LOCAL CODES) Page 8 LGH/LCH036, 048, 060, 072

11 BOTTOM ENTRY GAS PIPING COMPLETED power to unit. These devices should be properly labeled by the installer. GROUND JOINT UNION TO GAS VALVE PRESSURE TEST GAS LINE STREET ELBOW MANUAL MAIN SHUT-OFF VALVE 7 NIPPLE TO GAS SUPPLY 2-1/2 NIPPLE DRIP LEG MANUAL MAIN SHUT-OFF VALVE GAS VALVE CAP Grommets for both gas pipe openings are field provided. FIGURE 12 Pressure Test Gas Piping (Gas Units) When pressure testing gas lines, the gas valve must be disconnected and isolated. Gas valves can be damaged if subjected to more than 0.5 psig (3.48kPa). See figure 13. NOTE-Codes may require that manual main shut-off valve and union (furnished by installer) be installed in gas line external to unit. Union must be of the ground joint type. After all connections have been made, check all piping connections for gas leaks. Also check existing unit gas connections up to the gas valve; loosening may occur during installation. Use a leak detection solution or other preferred means. Do not use matches candles or other sources of ignition to check for gas leaks. CAUTION Some soaps used for leak detection are corrosive to certain metals. Carefully rinse piping thoroughly after leak test has been completed. Do not use matches, candles, flame or othe sources of ignition to check for gas leaks. LGH/LCH036, 048, 060, 072 WARNING Danger of explosion. Can cause injury or product or property damage. Do not use matches, candles, flame or other sources of ignition to check for leaks. NOTE-In case emergency shut down is required, turn off the main manual shut-off valve and disconnect main Page 9 High Altitude Derate FIGURE 13 Locate the high altitude conversion sticker in the unit literature bag. Fill out the conversion sticker and affix next to the unit nameplate. Refer to table 2 for high altitude adjustments. TABLE 2 HIGH ALTITUDE DERATE Altitude Ft.* Gas Manifold Pressure See Unit Nameplate 4500 And Above Derate 2% / 1000 Ft. Above Sea Level *Units installed at feet do not need to be modified. NOTE This is the only permissible derate for these units. Electrical Connections POWER SUPPLY Do not apply power or close disconnect switch until installation is complete. Refer to start-up directions. Refer closely to unit wiring diagram. Refer to unit nameplate for minimum circuit ampacity and maximum fuse size. 1- Units are factory-wired for 230,460,575 volt supply. For 208V supply, remove the insulated terminal cover from the 208V terminal on the control transformer. Move the wire from the transformer 240V terminal to the 208V terminal. Place the insulated terminal cover on the unused 240V terminal. 2- Route power through the bottom power entry area and connect to L1, L2, and L3 on the top of K1 in control area above compressor. Secure power wiring with factory-installed wire ties provided in

12 control box. Route power to TB2 on units equipped with electric heat. Route power to S48 or CB10 If unit is equipped with the optional disconnect switch or circuit breaker. See unit wiring diagram. 3- Solar-Ready Units Only - All solar-ready units are equipped with an S48 circuit breaker and F54 solar fuse block. Connect power wiring to the top of S48. Connect solar module wiring to the pigtails provided on the bottom of F54. Solar equipment must be specified for use with this unit. CONTROL WIRING CAUTION Electrostatic discharge can affect electronic components. Take precautions during unit installation and service to protect the electronic controls. Precautions will help to avoid control exposure to electrostatic discharge by putting the unit, the control and the technician at the same electrostatic potential. Neutralize electrostatic charge by touching hands and all tools on an unpainted unit surface, such as the gas valve or blower deck, before performing any service procedure. A-Thermostat Location Room thermostat mounts vertically on a standard 2 X 4 handy box or on any non-conductive flat surface. Locate thermostat approximately 5 feet (1524mm) above the floor in an area with good air circulation at average temperature. Avoid locating the room thermostat where it might be affected by: -drafts or dead spots behind doors and in corners -hot or cold air from ducts -radiant heat from sun or appliances -concealed pipes and chimneys B-Control Wiring The Unit Controller will operate the unit from a thermostat or zone sensor based on the System Mode. The default System Mode is the thermostat mode. Refer to the Unit Controller Installation and Setup Guide to change the System Mode. Use the menu navigation arrows and select button; see Settings - Install. Thermostat Mode 1- Route thermostat cable or wires from subbase to control area above compressor (refer to unit dimensions to locate bottom and side power entry). IMPORTANT - Unless field thermostat wires are rated for maximum unit voltage, they must be routed away from line voltage wiring. Use wire ties located near the lower left corner of the controls hat section to secure thermostat cable. Use18 AWG wire for all applications using remotely installed electro-mechanical and electronic thermostats. 2- Install thermostat assembly in accordance with instructions provided with thermostat. 3- Connect thermostat wiring to Unit Controller on the lower side of the controls hat section. 4- Wire as shown in figure 14 for electro-mechanical and electronic thermostats. If using other temperature control devices or energy management systems see instructions and wiring diagram provided by manufacturer. IMPORTANT-Terminal connections at the wall plate or subbase must be made securely. Loose control wire connections may allow unit to operate but not with proper response to room demand. Zone Sensor Mode The Unit Controller will operate heating and cooling based on the Unit Controller internal setpoints and the temperature from the A2 zone sensor. An optional Network Control Panel (NCP) can also be used to provide setpoints. A thermostat or return air sensor can be used as a back-up mode. Make zone sensor wiring connections as shown in figure 15. Page 10 LGH/LCH036, 048, 060, 072

13 24 V POWER K55B A FIELD WIRING WITH ELECTRONIC AND ELECTRO-MECHANICAL THERMOSTATS (Thermostat Mode) R C G W1 W2 Y1 Y2 OCP TO UNIT CONTROLLER THERMOSTAT INPUTS 2 S K TO R TO G TO Y1 ALL OTHER THERMOSTAT SIGNALS REMAIN CONNECTED AS SHOWN ON THE RIGHT. 2 R C G W1 W2 Y1 Y2 OCP J297A 1 B C 9 P297 W1 W2 A55 P262 J262C TO PROVIDE SUPERMARKET REHEAT SCHEME USE S86 DEHUMIDISTAT AND K FIGURE 14 FIELD WIRING IN ZONE SENSOR MODE (Zone Sensor Mode) 24VAC R C SENSOR IAQ AI1 UNIT CONTROLLER SENSOR HUM TMP A2 SENSOR FIGURE 15 OUTPUTS D01 D02 J298 C-Hot Gas Reheat Units Only - 1- Install humidity sensor in accordance with instructions provided with sensor. A DDC input may be used to initiate dehumidification instead of a sensor. 2- Make wiring connections as shown in figure 14 for Thermostat Mode or figure 15 for Zone Sensor Mode. In addition, connect either a humidity sensor or a dehumidification input. See figure 16 or 17 for humidity sensor wiring or figure 18 for dehumidification input wiring. Humidity Sensor Cable Applications: Wire runs of 50 feet (mm) or less: Use two separate shielded cables containing 20AWG minimum, twisted pair conductors with overall shield. Belden type 8762 or (plenum) or equivalent. Connect both cable shield drain wires to the Unit Controller as shown in figure 16. Wire runs of 150 feet (mm) or less: Use two separate shielded cables containing 18AWG minimum, twisted pair conductors with overall shield. Belden type 8760 or (plenum) or equivalent. Connect both cable shield drain wires to the Unit Controller as shown in figure 16. Wire runs over 150 feet (mm): Use a local, isolated 24VAC transformer such as Lennox cat #18M13 (20VA minimum) to supply power to RH sensor as shown in figure 17. Use two shielded cables containing 20AWG minimum, twisted pair conductors with overall shield. Belden type 8762 or (plenum) or equivalent. LGH/LCH036, 048, 060, 072 Page 11

14 FIELD WIRING REHEAT UNITS (Using A Humidity Sensor With Less Than 150 Ft. Wire Runs) A91 VIN VO GND 2 J298A 1 2 B 3 4 C D P298 FIGURE 16 FIGURE 17 R C AI 1 HUM TMP DO 1 C DO 2 DI P262 J262B FIELD WIRING REHEAT UNITS (Using A Humidity Sensor With More than 150 Ft. Wire Runs) NOT CONNECTED A91 VIN GND VO ISOLATED 24V TRANSFORMER DRAIN NOT CONNECTED J298A 1 FIGURE 18 2 B 3 4 C D P A55 UNIT CONTROLLER FIELD WIRING REHEAT UNITS (Using A Dehumidification Switch) DEHUMIDIFICATION SWITCH J R DI 4 Use 24 VAC (R) from any terminal available on J299 2, 5, or 7. C R C AI-1 HUM TMP DO-1 C DO-2 DI-1 Blower Operation and Adjustments Units are equipped with one of three factory-installed blower options. The ninth character in the model number identifies the blower as follows: E= Three-, four- and five-ton units are equipped with a variable speed, direct drive blower. When these units are also equipped with an economizer and configured for Advanced Air Flow Control, the installer is able to enter the design-specified supply and outdoor air CFM into the Unit Controller. This eliminates the need to manually take measurements and adjust settings. See Advanced Air Flow Control Start-Up section. T= Units are equipped with a two-stage belt drive blower. B= Units are equipped with a single-stage belt drive blower. Note - Six-ton units are available with belt drive blowers only. IMPORTANT Three phase scroll compressors must be phased sequentially for correct compressor and blower rotation. Follow COOLING START-UP section of installation instructions to ensure proper compressor and blower operation. A-Blower Operation Refer to the Unit Controller Installation and Setup Guide to energize blower. Use the menu navigation arrows and select button; see SERVICE > TEST. B-Determining Unit CFM 1- The following measurements must be made with air filters in place. IMPORTANT - On units equipped with direct drive blowers, a low speed adjustment less than 2/3 of high speed will improve humidity removal; refer to product data for more information. 2- With all access panels in place, measure static pressure external to unit (from supply to return). Blower performance data is based on static pressure readings taken in locations shown in figure 19. Note - Static pressure readings can vary if not taken where shown. 3- Measure the indoor blower wheel RPM. 4- Referring to Page 16 through Page 26, use static pressure and RPM readings to determine unit CFM. Use Page 27 when installing units with any of the options or accessories listed. Refer to table 4 for minimum airflow when electric heat is installed. Page 12 LGH/LCH036, 048, 060, 072

15 LOCATION OF STATIC PRESSURE READINGS INSTALLATIONS WITH DUCTWORK INSTALLATIONS WITH CEILING DIFFUSERS ROOFTOP UNIT ROOFTOP UNIT MAIN DUCT RUN SUPPLY RE TURN RETURN AIR READING LOCATION FIRST BRANCH OFF OF MAIN RUN SUPPLY AIR READING LOCATION SUPPLY AIR READING LOCATION SUPPLY RE TURN DIFFUSER RETURN AIR READING LOCATION Parameter FIGURE 19 TABLE 3 036, 048, 060 DIRECT DRIVE PARAMETER SETTINGS LGH/LCH Unit Factory Default Settings 036 H4E 048 H4E 060 H4E S4T Field Setting Description SETUP > TEST & BALANCE > BLOWER HIGH SPEED 55% 30% 59% Not Applicable LOW SPEED 28% 40% 36% Not Applicable Percentage torque for indoor blower high speed. Percentage torque for indoor blower low speed. SETUP > TEST & BALANCE > DAMPER BLOWER ON HIGH 10% 10 % 10 % 10 % BLOWER ON LOW 15 % 15 % 15 % Not Applicable Minimum damper position during high speed blower operation. Minimum damper position during low speed blower operation. SETTINGS > RTU OPTIONS > EDIT PARAMETER = 6 BLOWER SMOKE OUT PUT LGH/LCH036, 048, 060, % 80% 59% Not Applicable Page 13 Percentage torque for indoor blower smoke speed. Installer: Circle applicable unit model number and record any parameter changes under Field Setting column. Settings need to be recorded by installer for use when Unit Controller is replaced or reprogrammed. TABLE 4 Note - To adjust CFM on units configured for optional MINIMUM AIRFLOW-LC UNITS WITH ELECTRIC HEAT Advanced Air Flow Control, refer to Advanced Air Flow (BELT DRIVE) Control Start-Up section. CFM Kw Downflow & Horizontal Airflow D-Adjusting Unit CFM - Belt Drive Blowers LCH036HE 1080 LCH048HE 1280 LCH060HE 1600 C-Adjusting Unit CFM - Direct Drive Blowers The supply CFM can be adjusted by changing Unit Controller settings. Refer to table 3. Adjustments can also be made by using optional software. Record any CFM changes on the parameter settings label located on the inside of the compressor access panel. The blower RPM can be adjusted at the motor pulley. Loosen Allen screw and turn adjustable pulley clockwise to increase CFM. Turn counterclockwise to decrease CFM. See figure 20. Do not exceed minimum and maximum number of pulley turns as shown in table 5. TABLE 5 MINIMUM AND MAXIMUM PULLEY ADJUSTMENT Belt Min. Turns Open Maxi. Turns Open A Section No minimum 5

16 TO INCREASE CFM LOOSEN ALLEN SCREW & TURN PULLEY CLOCKWISE TO DECREASE CFM TURN PULLEY COUNTERCLOCKWISE BLOWER ASSEMBLY SIDE VIEW LOOSEN ALLEN SCREW TO ADJUST CFM MOTOR ALLEN SCREW PULLEY TO INCREASE BELT TENSION 1-Loosen four bolts securing motor base to mounting frame. 2-Slide the motor downward to tighten the belt. 3-Tighten four bolts on motor base. LOOSEN FOUR BOLTS AND SLIDE BLOWER MOTOR DOWNWARD TO TIGHTEN BELT FIGURE 20 E-Blower Belt Adjustment - Belt Drive F-Blower Belt Adjustment - Units Equipped With An Maximum life and wear can be obtained from belts only Optional Belt Tensioner if proper pulley alignment and belt tension are 1- Remove blower belt. maintained. Tension new belts after a hour 2- Remove bracket from blower housing. See figure 23. period of operation. This will allow belt to stretch and seat grooves. Make sure blower and motor pulley are 3- Remove the screw from the back side of the bracket. aligned as shown in figure Move the tensioner to the appropriate adjustment PULLEY ALIGNMENT hole and reinstall screw. ALIGNED 5- Replace bracket. 6- Replace blower belt. See figure 24. G-Check Belt Tension MOTOR PULLEY BELT BLOWER PULLEY Overtensioning belts shortens belt and bearing life. Check belt tension as follows: NOT ALIGNED 1- Measure span length X. See figure 22. MEASURE BELT TENSION FIGURE Loosen four bolts securing motor base to mounting frame. See figure To increase belt tension - Slide blower motor downward to tighten the belt. This increases the distance between the blower motor and FORCE the blower housing. 3- To loosen belt tension - DEFLECTION 1/64 PER INCH OF SPAN Slide blower motor upward to loosen the belt. This OR 1.5mm PER 100mm OF SPAN decreases the distance between the blower motor FIGURE 22 and the blower housing. 2- Apply perpendicular force to center of span (X) with 4- Tighten four bolts securing motor base to the enough pressure to deflect belt 1/64 for every inch mounting frame. of span length or 1.5mm per 100mm of span length. Page 14 LGH/LCH036, 048, 060, 072

17 Example: Deflection distance of a 40 span would be 40/64 or 5/8. INSTALL BELT Example: Deflection distance of a 400mm span would be 6mm. 3- Measure belt deflection force. For a used belt, the deflection force should be 5 lbs. (35kPa). A new belt deflection force should be 7 lbs. (48kPa). 1 TENSIONER DRIVER PULLEY A force below these values indicates an undertensioned belt. A force above these values indicates an overtensioned belt. H-Field-Furnished Blower Drives For field-furnished blower drives, use page 19 through 26 to determine BHP and RPM required. Reference Page 27 to determine the drive kit number. Reference table 6 for manufacturer's drive numbers. 2 ADJUST BELT TENSIONER MAXIMUM TENSION INDICATOR SHOULD BE BETWEEN MINIMUM AND MAXIMUM TENSION LINES DRIVEN PULLEY MINIMUM TENSION 3 TIGHTEN MOUNTING BOLT TO 22 LB./FT. USING 9/16 WRENCH ROTATE DRIVEN PULLEY TO SEAT BELT 4 BRACKET TENSIONER FIGURE 24 TIGHTEST BELT POSITION FACTORY-SET POSITION TIGHTER BELT POSITION FIGURE 23 LGH/LCH036, 048, 060, 072 Page 15

18 BLOWER DATA - DIRECT DRIVE - 3 TON BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE.FOR ALL UNITS ADD: 1 - Any factory installed options air resistance (heat section, economizer, etc.). 2 - Any field installed accessories air resistance (duct resistance, diffuser, etc.). See page 27 for wet coil and options/accessory air resistance data. NOTE - Default Speed Settings (percentage of blower torque) - Low 28% / High 55% DOWNFLOW External Percentage of Total Motor Torque Static Press. 20% 30% 40% 50% 60% 70% 80% 90% 100% in. w.g. Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM HORIZONTAL External Percentage of Total Motor Torque Static Press. 20% 30% 40% 50% 60% 70% 80% 90% 100% in. w.g. Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Page 16

19 BLOWER DATA - DIRECT DRIVE - 4 TON BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE.FOR ALL UNITS ADD: 1 - Any factory installed options air resistance (heat section, economizer, etc.). 2 - Any field installed accessories air resistance (duct resistance, diffuser, etc.). See page 27 for wet coil and options/accessory air resistance data. NOTE - Default Speed Settings (percentage of blower torque) - Low 40% / High 80% DOWNFLOW External Percentage of Total Motor Torque Static 20% 30% 40% 50% 60% 70% 80% 90% 100% Press. in. w.g. Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM HORIZONTAL External Percentage of Total Motor Torque Static 20% 30% 40% 50% 60% 70% 80% 90% 100% Press. in. w.g. Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Page 17

20 BLOWER DATA - DIRECT DRIVE - 5 TON BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE.FOR ALL UNITS ADD: 1 - Any factory installed options air resistance (heat section, economizer, etc.). 2 - Any field installed accessories air resistance (duct resistance, diffuser, etc.). See page 27 for wet coil and options/accessory air resistance data. NOTE - Default Speed Settings (percentage of blower torque) - Low 36% / High 59% DOWNFLOW External Percentage of Total Motor Torque Static 20% 30% 40% 50% 60% 70% 80% 90% 100% Press. in. w.g. Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM HORIZONTAL External Percentage of Total Motor Torque Static 20% 30% 40% 50% 60% 70% 80% 90% 100% Press. in. w.g. Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Cfm Watts RPM Page 18

21 BLOWER DATA - BELT DRIVE - 3 TON BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE. FOR ALL UNITS ADD: 1 - Any factory installed options air resistance (heat section, economizer, etc.). 2 - Any field installed accessories air resistance (duct resistance, diffuser, etc.). See page 27 for blower motors and drives and wet coil and options/accessory air resistance data. DOWNFLOW External Static (in.w.g.) Air Volume (cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP External Static (in.w.g.) Air Volume (cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Page 19

22 BLOWER DATA - BELT DRIVE - 3 TON BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE. FOR ALL UNITS ADD: 1 - Any factory installed options air resistance (heat section, economizer, etc.). 2 - Any field installed accessories air resistance (duct resistance, diffuser, etc.). See page 27 for blower motors and drives and wet coil and options/accessory air resistance data. HORIZONTAL Air Volume (cfm) External Static (in.w.g.) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP External Static (in.w.g.) Air Volume (cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Page 20

23 BLOWER DATA - BELT DRIVE - 4 TON BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE. FOR ALL UNITS ADD: 1 - Any factory installed options air resistance (heat section, economizer, etc.). 2 - Any field installed accessories air resistance (duct resistance, diffuser, etc.). See page 27 for blower motors and drives and wet coil and options/accessory air resistance data. DOWNFLOW Air Volume (cfm) External Static (in.w.g.) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Air Volume (cfm) External Static (in.w.g.) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Page 21

24 BLOWER DATA - BELT DRIVE - 4 TON BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE. FOR ALL UNITS ADD: 1 - Any factory installed options air resistance (heat section, economizer, etc.). 2 - Any field installed accessories air resistance (duct resistance, diffuser, etc.). See page 27 for blower motors and drives and wet coil and options/accessory air resistance data. HORIZONTAL Air Volume (cfm) External Static (in.w.g.) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Air Volume (cfm) External Static (in.w.g.) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Page 22

25 BLOWER DATA - BELT DRIVE - 5 TON BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE. FOR ALL UNITS ADD: 1 - Any factory installed options air resistance (heat section, economizer, etc.). 2 - Any field installed accessories air resistance (duct resistance, diffuser, etc.). See page 27 for blower motors and drives and wet coil and options/accessory air resistance data. DOWNFLOW Air Volume (cfm) External Static (in.w.g.) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Air Volume (cfm) External Static (in.w.g.) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Page 23

26 BLOWER DATA - BELT DRIVE - 5 TON BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE. FOR ALL UNITS ADD: 1 - Any factory installed options air resistance (heat section, economizer, etc.). 2 - Any field installed accessories air resistance (duct resistance, diffuser, etc.). See page 27 for blower motors and drives and wet coil and options/accessory air resistance data. HORIZONTAL Air Volume (cfm) External Static (in.w.g.) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Air Volume (cfm) External Static (in.w.g.) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Page 24

27 BLOWER DATA - BELT DRIVE - 6 TON BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE. FOR ALL UNITS ADD: 1 - Any factory installed options air resistance (heat section, economizer, etc.). 2 - Any field installed accessories air resistance (duct resistance, diffuser, etc.). See page 27 for blower motors and drives and wet coil and options/accessory air resistance data. DOWNFLOW External Static (in.w.g.) Air Volume (cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP External Static (in.w.g.) Air Volume (cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Page 25

28 BLOWER DATA - BELT DRIVE - 6 TON BLOWER TABLE INCLUDES RESISTANCE FOR BASE UNIT ONLY WITH DRY INDOOR COIL AND AIR FILTERS IN PLACE. FOR ALL UNITS ADD: 1 - Any factory installed options air resistance (heat section, economizer, etc.). 2 - Any field installed accessories air resistance (duct resistance, diffuser, etc.). See page 27 for blower motors and drives and wet coil and options/accessory air resistance data. HORIZONTAL External Static (in.w.g.) Air Volume (cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP External Static (in.w.g.) Air Volume (cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Page 26

29 BLOWER DATA BELT DRIVE KIT SPECIFICATIONS Model Motor HP No. of Drive Kits and RPM Range No. Nominal Maximum Speeds A01 A02 A03 A05 A06 A low high low high low high low high low high low high BELT DRIVE KIT SPECIFICATIONS Model Motor HP No. of No. Nominal Maximum Speeds AA01 AA02 AA FACTORY INSTALLED OPTIONS/FIELD INSTALLED ACCESSORY AIR RESISTANCE - in. w.g. Air Wet Indoor Coil Humiditrol Gas Heating Filters Volume Dehumidification Medium Economizer MERV , 072 High Heat MERV 8 cfm Coil Heat MODELS MODELS POWER EXHAUST FAN PERFORMANCE Return Air System Static Air Volume Exhausted Pressure cfm in. w.g. Return Air System Static Pressure in. w.g. Page 27 Air Volume Exhausted cfm MODELS MODELS

30 Drive No. TABLE 6 MANUFACTURER'S DRIVE COMPONENT NUMBERS DRIVE COMPONENTS Motor Pulley Blower Pulley belt Supplier No. OEM Part No. Supplier No. OEM Part No. Supplier No. OEM Part No. A01 1VP34x7/8 31K6901 AK54 x A A02 1VP34x7/8 31K6901 AK49 x A A03 1VP34x7/8 31K6901 AK44 x A A05 1VP34x7/8 31K6901 AK41 x A A06 1VP44x7/8 P AK51 x 1 18L2201 A A07 1VP50x7/8 P AK54 x AX43 73K8201 AA01 1VP34x7/8 31K6901 AK69 x 1 37L4701 AX51 13H0101 AA02 1VP40x7/8 79J0301 BK80H A53 P AA03 1VP40x7/8 79J0301 AK59 x 1 31K6801 A AA04 1VP44x7/8 P AK59 x 1 31K6801 AX51 13H0101 A01T 2 1VP34x7/8 31K6901 AK54 x A A02T 2 1VP34x7/8 31K6901 AK49 x A A03T 2 1VP34x7/8 31K6901 AK44 x A A05T 2 1VP34x7/8 31K6901 AK41 x A A06T 2 1VP44x7/8 P AK51 x 1 18L2201 A A07T 2 1VP50x7/8 P AK54 x AX43 73K8201 AA01T 2 1VP34x7/8 31K6901 AK69 x 1 37L4701 A AA02T 2 1VP40x7/8 79J0301 BK80H* A AA03T 2 1VP40x7/8 79J0301 AK59 x 1 31K6801 A AA04T 2 1VP44x7/8 P AK59 x 1 31K6801 A NOTES: 1 Requires split taper bushing, Browning no. H1; OEM no Includes tension assembly, Fenner no. FS0590; OEM no Cooling Start-Up 5- Refer to Cooling Operation and Adjustment section for proper method to check refrigerant charge. A-Operation B-Three Phase Scroll Compressor Voltage Phasing 1- Initiate first and second stage cooling demands according to instructions provided with Unit Controller Installation and Setup Guide. Use the menu navigation arrows and select button; see SERVICE > TEST 2- No Economizer Installed in Unit - A first-stage cooling demand (Y1) will energize the compressor and blower in low speed along with the condenser fan. An increased cooling demand (Y2) will increase the blower and compressor to high speed. Units Equipped With Economizer - When outdoor air is acceptable, a first-stage cooling demand (Y1) will energize the economizer. An increased cooling demand (Y2) will energize the compressor and low speed blower along with the condenser fan. When outdoor air is not acceptable unit will operate as though no economizer is installed. 3- Units contain one refrigerant circuit or stage. 4- Unit is charged with R-410A refrigerant. See unit rating plate for correct amount of charge. Page 28 Three phase scroll compressors must be phased sequentially to ensure correct compressor and blower rotation and operation. Compressor and blower are wired in phase at the factory. Power wires are color-coded as follows: line 1-red, line 2-yellow, line 3-blue. 1- Observe suction and discharge pressures and blower rotation on unit start-up. 2- Suction pressure must drop, discharge pressure must rise, and blower rotation must match rotation marking. If pressure differential is not observed or blower rotation is not correct: 3- Disconnect all remote electrical power supplies. 4- Reverse any two field-installed wires connected to the line side of K1 contactor. Do not reverse wires at blower contactor. 5- Make sure the connections are tight. Discharge and suction pressures should operate at their normal start up ranges. LGH/LCH036, 048, 060, 072

31 C-Refrigerant Charge and Check - All-Aluminum Coil WARNING-Do not exceed nameplate charge under any condition. This unit is factory charged and should require no further adjustment. If the system requires additional refrigerant, reclaim the charge, evacuate the system, and add required nameplate charge. NOTE - System charging is not recommended below 60F (15C). In temperatures below 60F (15C), the charge must be weighed into the system. If weighing facilities are not available, or to check the charge, use the following procedure: IMPORTANT - Charge unit in standard cooling mode high stage only. 1- Make sure outdoor coil is clean. Attach gauge manifolds and operate unit at full CFM in cooling mode with economizer disabled until system stabilizes (approximately five minutes). Make sure all outdoor air dampers are closed. 2- Compare the normal operating pressures (see tables 7-13) to the pressures obtained from the gauges. Check unit components if there are significant differences. 3- Measure the outdoor ambient temperature and the suction pressure. Refer to the appropriate circuit charging curve to determine a target liquid temperature. Note - Pressures are listed for sea level applications. 4- Use the same thermometer to accurately measure the liquid temperature (in the outdoor section). If measured liquid temperature is higher than the target liquid temperature, add refrigerant to the system. If measured liquid temperature is lower than the target liquid temperature, recover some refrigerant from the system. 5- Add or remove charge in increments. Allow the system to stabilize each time refrigerant is added or removed. 6- Continue the process until measured liquid temperature agrees with the target liquid temperature. Do not go below the target liquid temperature when adjusting charge. Note that suction pressure can change as charge is adjusted. 7- Example LGH/LCH036H: At 95 F outdoor ambient and a measured suction pressure of 130psig, the target liquid temperature is 98 F. For a measured liquid temperature of 106 F, add charge in increments until measured liquid temperature agrees with the target liquid temperature. Suct (psig) TABLE 7 LGH/LCH036S NORMAL OPERATING PRESSURES - ALL-ALUMINUM COIL Outdoor Coil Entering Air Temperature 65 F 75 F 85 F 95 F 105 F 115 F Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Suct (psig) TABLE 8 LGH/LCH036H NORMAL OPERATING PRESSURES - ALL-ALUMINUM COIL Outdoor Coil Entering Air Temperature 65 F 75 F 85 F 95 F 105 F 115 F Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Disc (psig) LGH/LCH036, 048, 060, 072 Page 29

32 Suct (psig) TABLE 9 LGH/LCH048S NORMAL OPERATING PRESSURES - ALL-ALUMINUM COIL Outdoor Coil Entering Air Temperature 65 F 75 F 85 F 95 F 105 F 115 F Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Page 30 Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) TABLE 10 LGH/LCH048H NORMAL OPERATING PRESSURES - ALL-ALUMINUM COIL Suct (psig) Outdoor Coil Entering Air Temperature 65 F 75 F 85 F 95 F 105 F 115 F Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) TABLE 11 LGH/LCH060S NORMAL OPERATING PRESSURES - ALL-ALUMINUM COIL Suct (psig) Outdoor Coil Entering Air Temperature 65 F 75 F 85 F 95 F 105 F 115 F Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) TABLE 12 LGH/LCH060H NORMAL OPERATING PRESSURES - ALL-ALUMINUM COIL Suct (psig) Outdoor Coil Entering Air Temperature 65 F 75 F 85 F 95 F 105 F 115 F Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) TABLE 13 LGH/LCH072H NORMAL OPERATING PRESSURES - ALL-ALUMINUM COIL Suct (psig) Outdoor Coil Entering Air Temperature 65 F 75 F 85 F 95 F 105 F 115 F Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Suct (psig) Disc (psig) Disc (psig) Disc (psig) Disc (psig) Disc (psig) LGH/LCH036, 048, 060, 072

33 130 LGH/LCH036S CHARGING CURVE - ALL-ALUMINUM COIL Outdoor Temperature ( F) Suction Pressure (psig) 130 LGH/LCH036H CHARGING CURVE - ALL-ALUMINUM COIL Outdoor Temperature ( F) Suction Pressure (psig) LGH/LCH036, 048, 060, 072 Page 31

34 130 LGH/LCH048S CHARGING CURVE - ALL-ALUMINUM COIL Outdoor Temperature ( F) Suction Pressure (psig) LGH/LCH048H CHARGING CURVE - ALL-ALUMINUM COIL Outdoor Temperature ( F) Suction Pressure (psig) Page 32 LGH/LCH036, 048, 060, 072

35 130 LGH/LCH060S CHARGING CURVE - ALL-ALUMINUM COIL Outdoor Temperature ( F) Suction Pressure (psig) LGH/LCH060H CHARGING CURVE - ALL-ALUMINUM COIL Outdoor Temperature ( F) Suction Pressure (psig) LGH/LCH036, 048, 060, 072 Page 33

36 130 LGH/LCH072H CHARGING CURVE - ALL-ALUMINUM COIL Outdoor Temperature ( F) Suction Pressure (psig) Page 34 LGH/LCH036, 048, 060, 072

37 D-Refrigerant Charge and Check - Fin/Tube Coil WARNING-Do not exceed nameplate charge under any condition. This unit is factory charged and should require no further adjustment. If the system requires additional refrigerant, reclaim the charge, evacuate the system, and add required nameplate charge. NOTE - System charging is not recommended below 60 F (15 C). In temperatures below 60 F (15 C), the charge must be weighed into the system. If weighing facilities are not available, or to check the charge, use the following procedure: 1- Attach gauge manifolds and operate unit in cooling mode on HIGH SPEED with economizer disabled until system stabilizes (approximately five minutes). Make sure outdoor air dampers are closed. 2- Use a thermometer to accurately measure the outdoor ambient temperature. 3- Apply the outdoor temperature to tables 14 through 27 to determine normal operating pressures. Pressures are listed for sea level applications at 80 F dry bulb and 67 F wet bulb return air. 4- Compare the normal operating pressures to the pressures obtained from the gauges. Minor variations in these pressures may be expected due to differences in installations. Significant differences could mean that the system is not properly charged or that a problem exists with some component in the system. Correct any system problems before proceeding. 5- If discharge pressure is high, remove refrigerant from the system. If discharge pressure is low, add refrigerant to the system. Add or remove charge in increments. Allow the system to stabilize each time refrigerant is added or removed. 6- Use the following approach method along with the normal operating pressures to confirm readings. TABLE 14 LG/LC 036S NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F LGH/LCH036, 048, 060, 072 Page 35 TABLE 15 LG/LC 036S REHEAT NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F TABLE 16 LG/LC 036H NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F TABLE 17 LG/LC 036H REHEAT NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F TABLE 18 LG/LC 048S NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F TABLE 19 LG/LC 048S REHEAT NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F

38 TABLE 20 LG/LC 048H NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F TABLE 21 LG/LC 048H REHEAT NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F TABLE 22 LG/LC 060S NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F TABLE 23 LG/LC 060S REHEAT NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F TABLE 24 LG/LC 060H NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F Page 36 TABLE 25 LG/LC 060H REHEAT NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F TABLE 26 LG/LC 072H NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F TABLE 27 LG/LC 072H REHEAT NORMAL OPERATING PRESSURES Outdoor Coil Entering Air Temp Discharge +10 psig Suction + 5 psig 65 F F F F F F D-Charge Verification - Approach Method - AHRI TESTING (Fin/Tube Coil Continued) 1- Using the same thermometer, compare liquid temperature to outdoor ambient temperature. Approach Temperature = Liquid temperature (at condenser outlet) minus ambient temperature. 2- Approach temperature should match values in table 28. An approach temperature greater than value shown indicates an undercharge. An approach temperature less than value shown indicates an overcharge. 3- The approach method is not valid for grossly over or undercharged systems. Use tables 14 through 27 as a guide for typical operating pressures. LGH/LCH036, 048, 060, 072

39 LGH/LCH Unit 036S & H Std. 036S & H Reheat 048H Std. 060S & H Reheat 060H Std. 072H Std. 048H Reheat 072H Reheat 048S Std. 060S Std. TABLE 28 APPROACH TEMPERATURE Liquid Temp. Minus Ambient Temp. 6 F + 1 (3.3 C + 0.5) 7 F + 1 (3.9 C + 0.5) 8 F + 1 (4.4 C + 0.5) 048S Reheat 9 F + 1 (5.0 C + 0.5) E-Compressor Controls See unit wiring diagram to determine which controls are used on each unit. Optional controls are identified on wiring diagrams by arrows at junction points. 1- High Pressure Switch (S4) The compressor circuit is protected by a high pressure switch which opens at 640 psig + 10 psig (4413 kpa + 70 kpa) and automatically resets at 475 psig + 20 psig (3275kPa kpa). 2- Low Pressure Switch (S87) The compressor circuit is protected by a loss of charge switch. Switch opens at 40 psig + 5 psig ( kpa) and automatically resets at 90 psig + 5 psig (621 kpa + 34 kpa). 3- Freezestat (S49) The compressor is protected by a freezestat located on the indoor coil. The freezestat opens at 29F+3 (-2C+2) and closes at 58F+4 (14C+2). 4- Compressor Crankcase Heater (HR1) Crankcase heater must be energized at all times to prevent compressor damage due to refrigerant migration. Energize crankcase heater 24 hours before unit start-up by setting thermostat so that there is no cooling demand (to prevent compressor from cycling) and apply power to unit. 5- Low Ambient Pressure Switch (S11) Switch maintains adequate discharge pressure by de-energizing condenser fan when liquid pressure falls below 240 psig +10 (1655 kpa+69). S11 is installed in the liquid line. Switch closes to energize condenser fan when pressure rises to 450 psig +10 (3103kPa + 69). 6- Discharge Line Thermostat (S40) 3 through 5 Ton Units Only Switch opens when discharge line temperature reaches 94F+5 (34C+3) and closes when temperature falls below 74F+5 (23C+3). Prevents crankcase heater operation in warm weather. 7- High Ambient Pressure Switch (S16) Switch improves high ambient operation by activating the TXV assist circuit. Switch closes at 550psig + 10 (3792kPa + 70kPa) and automatically resets at 400 PSIG (2758kPa + 70kPa). LGH/LCH036, 048, 060, 072 Page 37

40 Cooling Operation - 036, 048, 060 This is a summary of cooling operation. Refer to the sequence of operation provided in the Engineering Handbook or Service Manual for more detail. Note - During a dehumidification demand the blower operates at the highest speed. Free cooling is locked-out during reheat operation. Refer to hot gas reheat start-up and operation section for details. A-Two-Stage Thermostat 1-Economizer With Outdoor Air Suitable Y1 Demand - Compressors Off Blower Cooling Low Dampers modulate Y2 Demand - Compressors Off Blower Cooling High Dampers Modulate Note - If dampers are at maximum open for three minutes, compressor is energized at high speed and blower stays on cooling high. 2-No Economizer or Outdoor Air Not Suitable Y1 Demand - Compressor Low Blower Cooling Low Dampers Minimum Position Y2 Demand - Compressor High Blower Cooling High Dampers Minimum Position B-Three-Stage Thermostat OR Room Sensor 1-Economizer With Outdoor Air Suitable Y1 Demand - Compressors Off Blower Cooling Low Dampers modulate Y2 Demand - Compressors Off Blower Cooling High Dampers Modulate Note - If dampers are at maximum open for three minutes, compressor 1 is energized and blower stays on cooling high. Y3 Demand - Compressors 1 and 2 On Blower Cooling High Dampers Maximum Open Cooling Operation This is a summary of cooling operation. Refer to the sequence of operation provided in the Engineering Handbook or Service Manual for more detail. Note - During a dehumidification demand the blower operates at the highest speed. Free cooling is locked-out during reheat operation. Refer to hot gas reheat start-up and operation section for details. A-Two-Stage Thermostat 1-Economizer With Outdoor Air Suitable Y1 Demand - Compressors Off Blower Cooling On Dampers modulate Note - If dampers are at maximum open for three minutes, compressor is energized. Y2 Demand - Compressors On Blower Cooling On Dampers Modulate 2-No Economizer or Outdoor Air Not Suitable Y1 Demand - Compressor 1 On Blower Cooling On Dampers Minimum Position Page 38 LGH/LCH036, 048, 060, 072

41 Gas Heat Start-Up (Gas Units) FOR YOUR SAFETY READ BEFORE LIGHTING WARNING Electric shock hazard. Can cause injury or death. Do not use this unit if any part has been under water. Immediately call a qualified service technician to inspect the unit and to replace any part of the control system and any gas control which has been under water. WARNING Danger of explosion. Can cause injury or product or property damage. If overheating occurs or if gas supply fails to shut off, shut off the manual gas valve to the appliance before shutting off electrical supply. WARNING Electric shock hazard. Can cause injury or death. Before attempting to perform any service or maintenance, turn the electrical power to unit OFF at disconnect switch(es). Unit may have multiple power supplies. WARNING SMOKE POTENTIAL The heat exchanger in this unit could be a source of smoke on initial firing. Take precautions with respect to building occupants and property. Vent initial supply air outside when possible. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. The gas valve may be equipped with either a gas control lever or gas control knob. Use only your hand to push the lever or turn the gas control knob. Never use tools. If the the lever will not move or the knob will not push in or turn by hand, do not try to repair it. Call a qualified service technician. Force or attempted repair may result in a fire or explosion. This unit is equipped with an automatic spark ignition system. There is no pilot. In case of a safety shutdown, move thermostat switch to OFF and return the thermostat switch to HEAT to reset ignition control. A-Placing Unit In Operation WARNING Danger of explosion and fire. Can cause injury or product or property damage. You must follow these instructions exactly. Gas Valve Operation (figure 25 and 26) 1- Set thermostat to lowest setting. 2- Turn off all electrical power to appliance. 3- This appliance is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand. 4- Open or remove the control access panel. MANIFOLD PRESSURE ADJUSTMENT SCREW INLET PRESSURE PORT HONEYWELL VR8215S GAS VALVE Single-Stage Gas valve switch shown in ON position. FIGURE 25 WHITE RODGERS 36J54 GAS VALVE Two-Stage MANIFOLD PRESSURE TAP MANIFOLD PRESSURE OUTLET HIGH FIRE ADJUSTMENT LGH/LCH036, 048, 060, 072 WARNING Danger of explosion. Can cause injury or death. Do not attempt to light manually. Unit has a direct spark ignition system. Page 39 INLET PRESSURE TAP Gas valve switch is shown in OFF position. FIGURE 26 LOW FIRE ADJUSTMENT

42 5- Move gas valve switch to OFF. See figure 25 or Wait five (5) minutes to clear out any gas. If you then smell gas, STOP! Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions. If you do not smell gas, go to the next step. 7- Move gas valve switch to ON. See figure 25 or Close or replace the control access panel. 9- Turn on all electrical power to appliance. 10- Set thermostat to desired setting. NOTE - When unit is initially started, steps 1 through 9 may need to be repeated to purge air from gas line. 11- The ignition sequence will start. 12- If the furnace does not light the first time (gas line not fully purged), it will attempt up to two more ignitions before locking out. 13- If lockout occurs, repeat steps 1 through If the appliance will not operate, follow the instructions Turning Off Gas to Appliance and call your service technician or gas supplier. Turning Off Gas to Unit 1- If using an electromechanical thermostat, set to the lowest setting. 2- Before performing any service, turn off all electrical power to the appliance. 3- Open or remove the control access panel. 4- Move gas valve switch to OFF. 5- Close or replace the control access panel. WARNING Danger of explosion. Can cause injury or death. Do not attempt to light manually. Unit has a direct spark ignition system. Heating Operation and Adjustments (Gas Units) A-Heating Sequence of Operation 1- On a heating demand the combustion air inducer starts immediately. 2- Combustion air pressure switch proves inducer operation. After a 30-second pre-purge, power is allowed to ignition control. Switch is factory set and requires no adjustment. 3- Spark ignitor energizes and gas valve solenoid opens. 4- Spark ignites gas, ignition sensor proves the flame and combustion continues. 5- If flame is not detected after 8 seconds, the ignition control will repeat steps 3 and 4 two more times. The ignition control will wait 5 minutes before the ignition attempt recycles. B-Ignition Control Diagnostic LED's TABLE 29 IGNITION CONTROL HEARTBEAT LED STATUS LED Indicates Flashes Steady Off No power or control hardware fault. Steady On Power applied. Control OK. 3 Flashes Ignition lockout from too many trials. 4 Flashes Ignition lockout from too many flame losses within single call for heat. 5 Flashes Control hardware fault detected. C-Limit Controls Limit controls are factory-set and are not adjustable. The primary limit is located to the right of the combustion air inducer. See figure 34. D-Heating Adjustment Main burners are factory-set and do not require adjustment. The following manifold pressures are listed on the gas valve. Natural Gas Units - Low Fire w.c. Natural Gas Units - High Fire w.c. LP Gas Units - Low Fire w.c. LP Gas Units - High Fire w.c. Electric Heat Start-Up (LCH Units) Optional electric heat will stage on and cycle with thermostat demand. See electric heat wiring diagram on unit for sequence of operation. Page 40 LGH/LCH036, 048, 060, 072

43 Advanced Air Flow Control Start-Up PT5 PRESSURE TRANSDUCER Three-, four- and five-ton units equipped with a direct drive blower and optional economizer allows the installer to directly enter the design specified supply air (blower) and outdoor air volume (economizer minimum position) parameters without the need to manually take measurements and adjust settings. The system monitors supply air volume and outside air volume and also has customizable diagnostics. Note - Unit Controller configuration I.D. 1 character 7 is factory-set to either S or L for the unit to operate in Advanced Air Flow Control mode. When character 7 is set to N or U, the Unit Controller will stage the indoor blower speed but it won't control the damper minimum position. The economizer is equipped with a PT5 pressure transducer which provides feedback for damper minimum position. See figure 27 for PT5 location. Refer to the economizer installation instructions and Unit Controller manual for additional economizer set-up. Note - Modulation of dampers for free cooling does not change. A Design Specifications PRESSURE TRANSDUCER ECONOMIZER FIGURE 27 Use table 30 to fill in the field-provided, design-specified supply air CFM and minimum required outdoor/fresh air CFM. TABLE 30 FIELD-PROVIDED DESIGN SPECIFICATIONS Supply Air CFM Heating CFM Cooling High CFM Cooling Low CFM Ventilation CFM Economizer Minimum Position Outdoor Airflow CFM B Enter Supply Air CFM Into Unit Controller Use the following menu path to enter each supply air CFM into the Unit Controller. Make sure supply air CFM is within limitations shown in table 31. Refer to the Unit Controller manual provided with unit. SETTING > RTU OPTIONS > BLOWER > SPEEDS CAUTION The BLOWER CALIBRATION process starts the indoor blower at operational speeds and moves the economizer damper blades. Before starting this process, replace any access panels and close all unit doors except compressor compartment door. Blower calibration is required only on units that are newly installed or if there is a change in the duct work or air filters after installation. After the new CFM values are entered, use the down and up arrow buttons to select START CALIBRATION. Push SAVE to start calibration. The blower calibration status is displayed as a % complete. Upon successful completion, the Unit Controller will display CALIBRATION SUCCESS and go back to the blower calibration screen. Press the MAIN MENU button to go to the main menu and press the BACK button to go to the status screen. In the SPEEDS submenu, enter CFM values for HEAT, COOLING HIGH, COOLING LOW and VENTILATION. Use the down, up and save push buttons below the display to enter each value. After the speed CFM are saved, the Unit Controller will cycle to BLOWER CALIBRATION. LGH/LCH036, 048, 060, 072 Page 41 If only the CFM values are updated, use the down and up arrow buttons to select CALIBRATION DONE. Push SAVE to enter the updated values. This selection will not initiate calibration, resulting in less setup time. Press the MAIN MENU button to go to the main menu and press the BACK button to go to the status screen.

44 C Enter Outdoor Airflow Design Specifications Into Unit Controller Use the following menu path to enter the outdoor airflow CFM (replaces minimum damper position set point) into the Unit Controller. Make sure outdoor airflow CFM is within limitations shown in table 31. Refer to the Unit Controller manual provided with unit. SETTINGS > RTU OPTIONS > DAMPER Press the SAVE button to cycle through the sub-menu until the OUTDOOR AIRFLOW input screen is displayed. Enter the value and press SAVE. Press the MAIN MENU button to go to the main menu and press the BACK button to go to the status screen. D Operation TABLE 31 MINIMUM / MAXIMUM CFM LGH/LCH Unit Parameter Settings 1- After calibration, the indoor blower will supply the CFM specified based on the thermostat demand signal received by the Unit Controller: G Ventilation CFM W Heating CFM Y1 Cooling Low CFM Y2 Cooling High CFM 2- The Unit Controller, using input from PT5 and the entered outdoor air flow CFM, will open the fresh air dampers to minimum position. In addition, the Unit Controller must have an occupied (OCP) thermostat demand. Parameter Name LCH/LGH Default Factory Settings 036H4E 048H4E 060H4E SETUP > TEST & BALANCE > BLOWER COOLING HI SPEED / HEATING MAXIMUM (480 CFM/TON) COOLING HI SPEED MINIMUM (280 CFM/TON) COOLING LOW SPEED MINIMUM (220 CFM/TON) GAS HEAT - STANDARD - MINIMUM CFM GAS HEAT - MEDIUM - MINIMUM CFM GAS HEAT - HIGH - MINIMUM CFM ELECTRIC HEAT - MINIMUM CFM VENTILATION MINIMUM (150 CFM/TON) SETUP > TEST & BALANCE > DAMPER OUTDOOR AIRFLOW CFM MAXIMUM CFM SETTINGS > RTU OPTIONS > EDIT PARAMETER = 12 In order for the SMOKE CFM change to take effect, go to SETUP > TEST & BALANCE > BLOWER and run the the wizard. Performing this task will recalculate the output to the desired CFM. No adjustments are required during this procedure. MSAV SMOKE CFM MAXIMUM Installer: Configuration ID 1, position 7 needs to be set to either S or L. Circle applicable unit model number and record any CFM changes under Field Set CFM Value column. Settings need to be recorded by installer for use when Unit Controller is replaced or reprogrammed. Page 42 LGH/LCH036, 048, 060, 072

45 SCR Electric Heat Controller (LCH Units) Optional factory-installed SCR (A38) will provide small amounts of power to the electric heat elements to efficiently maintain warm duct air temperatures when there is no heating demand. The SCR maintains duct air temperature based on input from a field-provided and installed thermostat (A104) and duct sensor (RT20). SCR is located in the compressor section on the left wall. Use only with a thermostat or Novar control system. Use the instructions provided with the thermostat to set DIP switches as follows: S1 On, S2 Off, S3 Off. Use the instructions provided with the duct sensor to install sensor away from electric element radiant heat and in a location where discharge air is a mixed average temperature. Once power is supplied to unit, zero SCR as follows: 1- Adjust thermostat (A104) to minimum position. 2- Use a small screwdriver to slowly turn the ZERO potentiometer on the SCR until the LED turns solid red. 3- Very slowly adjust the potentiometer the opposite direction until the LED turns off. Hot Gas Reheat Start-Up And Operation General Hot gas reheat units provide a dehumidifying mode of operation. These units contain a reheat coil adjacent to and downstream of the evaporator coil. Reheat coil solenoid valve, L14, routes hot discharge gas from the compressor to the reheat coil. Return air pulled across the evaporator coil is cooled and dehumidified; the reheat coil adds heat to supply air. See figure 28 for reheat refrigerant routing and figure 29 for standard cooling refrigerant routing. L14 Reheat Coil Solenoid Valve When Unit Controller input (Unit Controller J298-5 or J299-8) indicates room conditions require dehumidification, L14 reheat valve is energized (Unit Controller P269-3) and refrigerant is routed to the reheat coil. Reheat Setpoint Reheat is factory-set to energize when indoor relative humidity rises above 60% (default). The reheat setpoint can be adjusted by changing Unit Controller Settings - Control menu. A setting of 100% will operate reheat from an energy management system digital output. The reheat setpoint can also be adjusted using an optional Network Control Panel (NCP). Reheat will terminate when the indoor relative humidity falls 3% (57% default) or the digital output de-energizes. The reheat deadband can be adjusted at Settings - Control menu. EVAPORATOR COIL REHEAT COIL RETURN AIR REHEAT MODE REFRIGERANT ROUTING EXPANSION VALVE OUTDOOR AIR SUPPLY AIR CHECK VALVE COMPRESSOR CONDENSER COIL REHEAT VALVE FIGURE 28 LGH/LCH036, 048, 060, 072 Page 43

46 COOLING MODE REFRIGERANT ROUTING EVAPORATOR COIL RETURN AIR EXPANSION VALVE OUTDOOR AIR REHEAT COIL SUPPLY AIR CHECK VALVE COMPRESSOR CONDENSER COIL REHEAT VALVE FIGURE 29 Check-Out Test reheat operation using the following procedure. 1- Make sure reheat is wired as shown in wiring section. 2- Make sure unit is in local thermostat mode. 3- Use Unit Controller key pad to elect SERVICE > TEST > DEHUMIDIFIER. The blower and compressor (reheat) should be operating. DEHUMIDIFIER 1 ON will be appear on the Unit Controller display. 4- Press BACK on the Unit Controller display to stop the testing mode. Compressor (reheat) and blower should de-energize. Default Reheat Operation During reheat mode free cooling is locked out. No Y1 demand but a call for dehumidification: Compressor is operating, blower is on, and the reheat valve is energized. Y1 demand: Compressor is operating, blower is on, and the reheat valve is energized. Y2 demand: Page 44 Compressor is operating, blower is on, and the reheat valve is de-energized. Service The unit should be inspected once a year by a qualified service technician. CAUTION Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. WARNING The State of California has determined that this product may contain or produce a chemical or chemicals, in very low doses, which may cause serious illness or death. It may also cause cancer, birth defects, or reproductive harm. A-Filters Units are equipped with temporary filters which must be replaced prior to building occupation. See table 32 for correct filter size. Refer to local codes or appropriate jurisdiction for approved filters. LGH/LCH036, 048, 060, 072

47 WARNING Units are shipped from the factory with temporary filters. Replace filters before building is occupied. Damage to unit could result if filters are not replaced with approved filters. Refer to appropriate codes. Approved filters should be checked monthly and replaced when necessary. Take note of air flow direction marking on filter frame when reinstalling filters. See figure 30. Clean burners as follows: 1- Turn off both electrical power and gas supply to unit. 2- Remove blower access panel. 3- Remove top burner box panel. 4- Remove two screws securing burners to burner support and lift the burners from the orifices. See figure 31. Clean as necessary. BURNER BOX ASSEMBLY TABLE 32 UNIT FILTERS Unit Qty Filter Size - inches (mm) 036, X 20 X 2 (406 X 508 X 51) 060, X 20 X 2 (508 X 508 X 51) NOTE-Filters must be U.L.C. certified or equivalent for use in Canada. FLAME SENSOR GAS VALVE REMOVE FILTERS BURNERS GAS MANIFOLD IGNITOR FIGURE 31 PULL TO REMOVE FILTERS 5- Locate the ignitor under the right burner. Check ignitor spark gap with appropriately sized twist drills or feeler gauges. See figure 32. IGNITOR SPARK GAP SHOULD BE 1/8 (3mm) FIGURE 30 B-Lubrication All motors are lubricated at the factory. No further lubrication is required. C-Burners (Gas Units) Periodically examine burner flames for proper appearance during the heating season. Before each heating season examine the burners for any deposits or blockage which may have occurred. LGH/LCH036, 048, 060, 072 Page 45 FIGURE Replace burners and screws securing burner. See figure 33.

48 WARNING Danger of explosion. Can cause injury or death. Do not overtighten main burner mounting screws. Snug tighten only. 7- Replace access panel. 8- Restore electrical power and gas supply. Follow lighting instructions attached to unit and use inspection port in access panel to check flame. BURNER ORIENTATION 150,000 BTUH - 7 BURNERS 4- Remove and retain screws securing combustion air inducer to flue box. Remove vent connector. See figure Clean inducer wheel blades with a small brush and wipe off any dust from housing. Take care not to damage exposed fan blades. Clean accumulated dust from front of flue box cover. HEAT EXCHANGER ASSEMBLY HEAT EXCHANGER TUBE COMBUSTION AIR INDUCER SENSOR IGNITOR 108,000 BTUH - 5 BURNERS FLUE BOX COVER SENSOR IGNITOR 65,000 BTUH - 3 BURNERS BURNER ROLLOUT SWITCH PRIMARY LIMIT VENT CONNECTOR GAS VALVE FIGURE 34 SENSOR IGNITOR FIGURE 33 D-Combustion Air Inducer (Gas Units) A combustion air proving switch checks combustion air inducer operation before allowing power to the gas controller. Gas controller will not operate if inducer is obstructed. Under normal operating conditions, the combustion air inducer wheel should be checked and cleaned prior to the heating season. However, it should be examined periodically during the heating season to establish an ideal cleaning schedule. Clean combustion air inducer as follows: 1- Shut off power supply and gas to unit. F-Evaporator Coil 2- Remove the mullion on the right side of the heat section. 3- Disconnect pressure switch air tubing from combustion air inducer port. Page Return combustion air inducer motor and vent connector to original location and secure with retained screws. It is recommended that gaskets be replaced during reassembly. 7- Replace mullion. 8- Clean combustion air inlet louvers on blower access panel using a small brush. E-Flue Box (Gas Units) Remove flue box cover only when necessary for equipment repair. Clean inside of flue box cover and heat exchanger tubes with a wire brush when flue box cover has to be removed. Install a new flue box cover gasket and replace cover. Make sure edges around flue box cover are tightly sealed. Inspect and clean coil at beginning of each cooling season. Clean using mild detergent or commercial coil cleaner. Flush coil and condensate drain with water taking care not to get insulation, filters and return air ducts wet. LGH/LCH036, 048, 060, 072

49 G-Condenser Coil All-Aluminum Coils - Clean condenser coil annually with water and inspect monthly during the cooling season. Clean the all-aluminum coil by spraying the coil steadily and uniformly from top to bottom. Do not exceed 900 psi or a 45 angle; nozzle must be at least 12 inches from the coil face. Take care not to fracture the braze between the fins and refrigerant tubes. Reduce pressure and work cautiously to prevent damage. Fin/Tube Coils - Clean condenser coil annually with detergent or commercial coil cleaner and inspect monthly during the cooling season. Condenser coils are made of single and two formed slabs. On units with two slabs, dirt and debris may become trapped between the slabs. To clean between slabs, carefully separate coil slabs and wash them thoroughly. See figure 35. Flush coils with water following cleaning. Note - Remove all screws and gaskets prior to cleaning procedure and replace upon completion. H-Supply Air Blower Wheel Annually inspect supply air blower wheel for accumulated dirt or dust. Turn off power before attempting to remove access panel or to clean blower wheel. TOP VIEW SUPPLY AIR BLOWER CLEAN CONDENSER COIL - UNITS WITH FIN/TUBE COILS ENDPLATE IS SECURED TO MULLION CONDENSER COILS 1- Remove unit top panel and condenser section access panel. 2- Remove screws securing coil end plate to mullion. 3- Remove wire ties connecting coils slabs and separate slabs 3-4 (76-102mm). 4- Clean coils with detergent or commercial coil cleaner. 5- Rinse thoroughly with water and reassemble. Use field-provided wire ties to connect coil slabs. CONDENSER ACCESS PANEL FIGURE 35 LGH/LCH036, 048, 060, 072 Page 47

50 Factory Unit Controller Settings Use the Unit Controller to adjust parameters; menu paths are shown in each table. Refer to the Unit Controller manual provided with each unit. Tables 33 through 36 show factory settings (in degrees, % of fan CFM, etc.). Record adjusted settings on the label located inside the compressor access panel. When field installing optional kits and accessories, the Unit Controller must be configured to identify the option before it will function. Refer to figures 36 and 37 to determine whether the Unit Controller configuration I.D. must change. To configure the option, use MAIN MENU > SETUP > INSTALL menu path. Press SAVE until CONFIGURATION ID 1 or 2 appears depending on the option installed. Change the appropriate character in the configuration I.D. For example, when an economizer is installed using a single enthalpy sensor, change configuration I.D. 1, the second character, to S. TABLE Units With BACnet Module Settings Use menu SETUP > NETWORK INTEGRATION. Set BACNET and network address. BACNET MAC ADDRESS: TABLE Units With Room Sensor, CPC/LSE Gateway Settings Use menu SETUP > NETWORK INTEGRATION. Set L CONNEC TION and network address. TABLE Units With Hot Gas Reheat Use SETTINGS > RTU OPTIONS > EDIT PARAMETERS Parameter Factory Setting Field Setting Description Hot Gas Reheat Option 6: Reheat is only possible if blower is energized during occupied periods. Controlled by RH sensor (A91) connected to input A55_P298_5 and set point set at parameter 106 (default 60%). TABLE Units with BACnet Module (Target) Settings Use menu SETUP > NETWORK INTEGRATION. Set BACNET and network address. BACNET MAC ADDRESS: Parameter Factory Setting Setting Description Use SETTINGS > RTU OPTIONS > EDIT PARAMETERS Sets the compressor minimum run time to 2 minutes. Set reheat SP from connected sensor to 99% to basically disable. Reheat will be controlled over by BAS. Only applies to units with the reheat option Thermostat with three cooling stages DCV max. open damper. 0=controlled by network. Time delay between heating and cooling mode. LCONN ADDRESS: Page 48 LGH/LCH036, 048, 060, 072

51 Configuration ID Humiditrol [1] Not Installed = N Humiditrol Installed = H Unconfigured = U Economizer [2] Not Installed = N Motorized Outdoor Air Damper Only = M Economizer - Temperature = T Economizer Global = G Economizer - Single Enthalpy = S Economizer - Dual Enthalpy = D Unconfigured = U Power Exhaust [3] Not Installed = N Single-Stage = S Dual-Stage = D Unconfigured = U Power Exhaust Control 4] Not Installed = N Damper Position = A [8] Outdoor Air CFM Control N = Not applicable (for future use) [7] Advance Air Flow Control N = Not Installed S = Installed with Standard Economizer L = Installed with High Performance Economizer U = Unconfigured [6] Blower Variable Frequency Drive Bypass N = Not Installed A = Automatic Bypass M = Manual Bypass U = Unconfigured [5] Network Module N = Not Installed B = BACnet L = LonTalk (Lennox) FIGURE 36 LGH/LCH036, 048, 060, 072 Page 49

52 Air Flow Proving [1] Switch (S52) Not Installed = N Installed on M3 = C Installed on DDC Controller = D Dirty Filter Switch (S27) [2] Not Installed = N Installed on M3 = C Overflow Switch (S149 / S179) [3] Not Installed = N Installed on DI-2 = 2 Installed on DI-3 = 3 Configuration ID [9] Electric Heat (Field-Installed) N = Not Installed Y = Installed [8] Load Shedding N = Not Installed G = Global (P297 - pin 9) L = Installed on DI-2 U = Installed on DI-3 [7] Zone Bypass Damper N = Not Installed Y = Installed Motor Overload [4] Switch (S42) Not Installed = N Installed on DI-2 = 2 Installed on DI-3 = 3 * When Phase / Voltage detection monitoring is enabled on a three-phase system and configured incorrectly will result in the system going into demand hold status and then restart after three minutes. [6] Ultra Violet Lamp N = Not Installed Y = Installed [5] Phase / Voltage Detection * N = Not Installed 1 = Enabled Internal (Lennox) 2 = External (A42) Phase Detection on DI-2 3 = External (A42) Phase Detection on DI-3 FIGURE 37 Page 50 LGH/LCH036, 048, 060, 072

53 See unit nameplate for manufacturer and address /2015 Supersedes LGH036, , 072, 074 (3, 4, 5 and 6 Tons) LGH092, 094, 120, 122, 150, (7-1/2, 8 1/2, 10 and 12 Tons) LGH156, 180, 210, 240, 300S (13, 15, 17-1/2, 20 and 25 Tons) LGH242, 300H, 360 (20, 25 and 30 Tons) ROOFTOP UNITS 3 LEN OX N FBR READ ALL INSTRUCTIONS IN THIS MANUAL AND RETAIN FOR FUTURE REFERENCE Litho U.S.A Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Installation and service must be performed by a qualified installer, service agency or the gas supplier. WARNING FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury death or property damage. WHAT TO DO IF YOU SMELL GAS: Do not try to light any appliance. Extinguish any open flames. Do not touch any electrical switch; do not use any phone in your building. Leave the building immediately. Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions. If you cannot reach your gas supplier, call the fire department.

54 LGH036, 048, 060, 072, & 074 Parts Arrangement FILTERS (4) 036, 048:16 X 20 X 2 060, 072, 074: 20 X 20 X 2 EVAPORATOR COIL REHEAT COIL (OPTIONAL) TXV BLOWER MOTOR (BELT DRIVE SHOWN) CONDENSER FAN ECONOMIZER (OPTIONAL) BLOWER COIL GUARDS (OPTIONAL) CONDENSATE DRAIN COMBUSTION AIR INDUCER BURNERS GAS VALVE UNIT CONTROLLER COMPRESSOR CONDENSER COIL LGH092, 094, 102, 120, 122, 150 & 152 Parts Arrangement EVAPORATOR COIL REHEAT COIL (OPTIONAL) BLOWER MOTOR (BELT DRIVE SHOWN) CONDENSER FANS (2 ON 092, 102, 120, 150 UNITS; 3 ON 094, 122, 152 UNITS) CONDENSER COILS UNIT CONTROLLER 3 BLOWER BLOWER ECONOMIZER (OPTIONAL) 3 DISCONNECT / CIRCUIT BREAKER (FACTORY OR FIELD INSTALLED OPTION) LEN ON X COMPRESSORS FILTERS (FOUR - 20 X 25 X 2 ) CONDENSATE DRAIN GAS VALVE BURNERS COMBUSTION AIR INDUCER Page /2015

55 LGH156, 180, 210, 240, 300S Parts Arrangement ECONOMIZER DAMPERS (OPTIONAL) BLOWERS FILTERS (SIX - 24 X 24 X 2 ) EVAPORATOR COIL CONDENSER FANS (3 FANS ON 156 UNITS; 6 FANS ON 180U, 210, 240, & 300S UNITS BLOWER MOTOR UNIT CONTROLLER CONDENSATE DRAIN CONDENSER COILS (RIGHT COIL IS VERTICAL ON 156 UNITS) DISCONNECT (Factory-installed option) GAS VALVE LGH242, 300H, 360 Parts Arrangement BURNERS COMBUSTION AIR INDUCER COMPRESSORS (4 ON 180U, 240 & 300S UNITS) ECONOMIZER DAMPERS (OPTIONAL) FILTERS (TWELVE - 20 X 20 X 2 ) EVAPORATOR COIL CONDENSER FANS (6) BLOWERS BLOWER MOTOR CONTROL BOX CONDENSATE DRAIN 115V GFCI OUTLET (Factory-installed option) CONDENSER COILS DISCONNECT (Factory-installed option) BURNERS COMPRESSORS HEAT EXCHANGER TUBES COMBUSTION AIR INDUCER LGH User's Page 3

56 Safety 1 - Keep unit area clear and free of combustible materials, gasoline and other flammable vapors and liquids. 2 - Do not obstruct air flow to unit. Unit must receive an unobstructed flow of combustion and ventilating air. WARNING Danger of explosion and fire. Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death or property damage. WARNING Danger of electrical shock, explosion and fire. Improper servicing could result in dangerous operation, serious inujry, death or property damage. WARNING Do not use this furnace if any part has been under water. A flood-damaged furnace is extremely dangerous. Attempts to use the furnace can result in fire or explosion. A qualified service agency should be contacted to inspect the furnace and to replace all gas controls, control system parts, electrical parts that have been wet or the furnace if deemed necessary. WARNING Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a licensed professional HVAC installer or equivalent, service agency, or the gas supplier WARNING Electric shock hazard. Can cause injury or death. Before attempting to perform any service or maintenance, turn the electrical power to unit OFF at disconnect switch(es). Unit may have multiple power supplies. WARNING The State of California has determined that this product may contain or produce a chemical or chemicals, in very low doses, which may cause serious illness or death. It may also cause cancer, birth defects, or reproductive harm. CAUTION Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. Unit Operation WARNING Danger of explosion. Can cause injury or product or property damage. Should the gas supply fail to shut off or if overheating occurs, shut off the gas valve to the furnace before shutting off the electrical supply. FOR YOUR SAFETY READ BEFORE LIGHTING BEFORE LIGHTING smell all around the furnace area for gas. Be sure to smell next to the roof because some gas is heavier than air and will settle on the roof. The gas valve may be equipped with either a gas control lever or gas control knob. Use only your hand to push the lever or turn the gas control knob. Never use tools. If the lever will not move or the knob will not push in or turn by hand, do not try to repair it. Call a qualified service technician. Force or attempted repair may result in a fire or explosion. The unit is equipped with an automatic spark ignition system. There is no pilot. In case of a safety shutdown, move thermostat switch to OFF and return the thermostat switch to HEAT. For logic units and units with electronic temperature controls, shut off the main disconnect and then turn it on to reset the ignition control. Placing Unit Into Operation WARNING Danger of explosion and fire. Can cause injury or product or property damage. You must follow these instructions exactly. Page /2015

57 Gas Valve Operation (figures 1, 2, 3 and 4) 1- Set thermostat to lowest setting. 2- Turn off all electrical power to appliance. Honeywell VR8215S Gas Valve MANIFOLD Single-Stage PRESSURE ADJUSTMENT SCREW MANIFOLD PRESSURE OUTLET HIGH FIRE ADJUSTMENT Honeywell VR8305Q Gas Valve with Knob Two-Stage LOW FIRE ADJUSTMENT MANIFOLD PRESSURE TAP INLET PRESSURE TAP INLET PRESSURE PORT GAS VALVE SWITCH SHOWN IN ON POSITION. FIGURE 1 White Rodgers 36J54 Gas Valve Two-Stage MANIFOLD PRESSURE TAP HIGH FIRE ADJUSTMENT INLET PRESSURE LOW FIRE TAP ADJUSTMENT GAS VALVE SWITCH SHOWN IN OFF POSITION. FIGURE 2 INLET PRESSURE TAP White Rodgers 36H54 Gas Valve Two-Stage MANIFOLD PRESSURE TAP HIGH FIRE ADJUSTMENT LOW FIRE ADJUSTMENT GAS VALVE SWITCH SHOWN IN ON POSITION. FIGURE 3 GAS VALVE KNOB IS SHOWN IN OFF POSITION. FIGURE 4 3- This appliance is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand. 4- Open or remove the heat section access panel. 5- Turn gas valve switch to OFF. See figure 1, 2 or 3. On Honeywell VR8305Q gas valves, turn knob on gas valve clockwise to OFF. Do not force. See figure Wait five (5) minutes to clear out any gas. If you then smell gas, STOP! Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions. If you do not smell gas, go to the next step. 7- Turn gas valve switch to ON. See figure 1, 2 or 3. On Honeywell VR8305Q gas valves, turn knob on gas valve counterclockwise to ON. Do not force. See figure Close or replace the heat section access panel. 9- Turn on all electrical power to appliance. 10- Set thermostat to desired setting. NOTE - When unit is initially started, steps 1 through 9 may need to be repeated to purge air from gas line. 11- The ignition sequence will start. 12- If the appliance does not light the first time (gas line not fully purged), it will attempt up to two more ignitions before locking out. 13- If lockout occurs, repeat steps 1 through If the appliance will not operate, follow the instructions Turning Off Gas to Appliance and call your service technician or gas supplier. Turning Off Gas to Unit 1- If using an electromechanical thermostat, set to the lowest setting. 2- Before performing any service, turn off all electrical power to the appliance. LGH User's Page 5

58 3- Open or remove the heat section access panel. 4- Turn gas valve switch to OFF. On Honeywell VR8305Q gas valves, turn knob on gas valve clockwise to OFF. Do not force. 5- Close or replace the heat section access panel. Burner Flame WARNING Danger of explosion. Can cause injury or death. Do not attempt to light manually. Unit has a direct spark ignition system. WARNING Danger of explosion and fire. Can cause injury or product or property damage. Periodically inspect burner flame to ensure proper unit operation. The primary air is permanently set for normal operation. The flame will be basically blue with some clear yellow streaking in the end of the flame. Inspect the burner flame periodically during the heating season using the inspection port provided on the burner access panel. Flue Passage and Vent Inspection Annually, before heating season, inspect the combustion air intake louvers, vent cap, heat exchanger, burners and combustion air inducer for corrosion, deterioration or deposits of debris. Remove any obstructions or blockage. See figure 5, 6, or 7. Service To maintain efficiency and longevity, your equipment must be serviced yearly by a qualified service technician. Failure to provide proof of service can void warranty. CAUTION Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. Servicing Filter Units are equipped with filters as shown in table 1. Filters should be checked monthly and replaced when necessary. Take note of air flow direction marking on filter frame when reinstalling filters. See figure 8. NOTE - Replace factory-installed filters within 30 days of initial unit start-up. Refer to local codes or appropriate jurisdiction for approved filters. Page 6 HEAT EXCHANGER ASSEMBLY UNITS HEAT EXCHANGER TUBE COMBUSTION AIR INDUCER BURNER ROLLOUT SWITCH HEAT EXCHANGER TUBE COMBUSTION AIR INDUCER GAS VALVE PRIMARY LIMIT VENT CONNECTOR FIGURE 5 HEAT EXCHANGER ASSEMBLY UNITS BURNER FIGURE 6 WARNING FLUE BOX COVER GAS VALVE VENT CONNECTOR Units are shipped from the factory with temporary filters. Replace filters before building is occupied. Damage to unit could result if filters are not replaced with approved filters. Refer to appropriate codes /2015

59 COMBUSTION AIR INDUCER GAS VALVE HEAT EXCHANGER ASSEMBLY UNITS HEAT EXCHANGER TUBE BURNER FIGURE 7 VENT CONNECTOR TABLE 1 UNIT FILTERS Unit Qty Filter Size - inches (mm) 036, X 20 X 2 (406 X 508 X 51) 060, 072, X 20 X 2 (508 X 508 X 51) 092, 094, 102, 122, 120, 150, X 25 X 2 (508 X 635 X 51) S 6 24 X 24 X 2 (610 X 610 X 51) 242, 300H, X 20 X 2 (508 X 508 X 51) NOTE - Filters must be ULC approved or equivalent for use in Canada. REMOVE FILTERS PULL TO REMOVE FILTERS FIGURE 8 Lubrication All motors are lubricated at the factory. No further lubrication is required Units - Blower shaft bearings are prelubricated. For extended bearing life, relubricate at least once every two years with a lithium base grease, such as Alvania 3 (Shell Oil), Chevron BRB2 (Standard Oil) or Regal AFB2 (Texas Oil). Use a hand grease gun for relubrication. Add only enough grease to purge through the bearings so that a bead of grease appears at the seal lip contacts. Manifold Pressures Manifold pressures are shown in table 2. Refer to figures 1, 2, 3 or 4 to locate pressure ports. TABLE 2 MANIFOLD PRESSURES in.wg. Unit 036, 048, 060, 072, 074 Std./High Heat 036, 048, 060, 072, 074 Dual Heat Natural Gas 1st Stage NA 2.0 (0.47) 1.6 (0.40) 2nd Stage (0.87) 3.5 (0.87) 3.7 (0.92) Propane (LP) Gas 1st Stage NA 5.9 (1.47) 5.5 (1.37) 2nd Stage (2.61) 10.5 (2.61) 10.5 (2.61) Burners Clean the burners as follows: 1- Turn off the electrical power and the gas supply to the unit. 2- Remove the burner compartment access panel. 3- Remove top burner box panel. See figure 9 or Remove two screws securing burners to burner support and lift the burners from the orifices. See figure 9 or 10. Clean as necessary. Spark gap on ignition electrode must be properly set. Refer to the Heating Adjustment section in the installation instructions. 5- Replace burners and screws securing burner. Replace the top burner box panel. 6- Turn on the electrical power and the gas supply to the unit. Follow the operating instructions attached to the unit and use the inspection port in the access panel to check the flame. Combustion Air Inducer A combustion air inducer proving switch checks combustion air inducer operation before allowing power to the gas controller. The gas controller will not operate if the inducer is obstructed. Under normal operating conditions, the combustion air inducer wheel should be checked and cleaned prior to the heating season. However, it should be examined periodically during the heating season to establish an ideal cleaning schedule. Clean the combustion air inducer as follows: 1- Turn off the electrical power and the gas supply to the unit. 2- On units, remove the tube bracket support from the mullion on the right side of the heat section. On units, remove the mullion on the right side of the heat section. 3- Disconnect the pressure switch air tubing from the combustion air inducer port. LGH User's Page 7

60 4- Remove and retain the screws securing the combustion air inducer to the flue box. BURNER BOX ASSEMBLY UNITS TOP BURNER NOX INSERT BOX PANEL FLAME SENSOR GAS VALVE BURNERS FIGURE 9 GAS MANIFOLD BURNER BOX ASSEMBLY UNITS GAS VALVE IGNITOR 5- Remove and retain two screws from the bracket supporting the vent connector before removing vent connector units do not have a support bracket. See figure 5, 6, or Clean the inducer wheel blades with a small brush and wipe off any dust from the housing. Clean accumulated dust from the front of the flue box cover. 7- Return the combustion air inducer motor and the vent connector to their original location. Secure with retained screws. It is recommended that the combustion air inducer gasket be replaced during reassembly. 8- On units, replace the tube bracket support. On units, replace mullion. 9- Use a small brush to clean the combustion air inlet louvers on the access panel. Flue Passageway and Flue Box 1- Remove the combustion air inducer assembly as described in the Combustion Air Inducer subsection. 2- Remove the flue box cover. Clean the flue box with a wire brush as required. 3- Clean the tubes with a wire brush. 4- Reassemble the unit. The flue box cover gasket and combustion air inducer gasket should also be replaced during reassembly. Service Reminder Call a qualified service technician if the unit is inoperative. Before calling, always check the following to be sure service is required: BURNERS 1- Be sure electrical disconnect switches are ON. 2- Check room thermostat for proper setting. GAS MANIFOLD FLAME SENSOR 3- Replace any blown fuses or reset circuit breakers. 4- Gas valve should be ON. 5- Air filters should not be plugged, limiting air flow. FIGURE Make sure all access panels are in place. Repair Parts Listing When ordering repair parts, include the complete model number and serial number listed on the ETL/CSA rating plate - e.g. LGH120H4BH1Y. Gas Heat Section Parts Heat Exchanger Combustion Air Assembly Combustion Air Proving Switch Burner Assembly Burner Manifold Assembly Main Burner Orifices Flame Roll-out Switches Auxiliary Limit Controls Ignition Electrode Assembly Ignition Lead Ignition Sensor Assembly Sensor Lead Combination Gas Valve Limit Controls Cooling Parts Compressors Cond. Fan Run Capacitors Cond. Fan Blades Cond. Fan Mounting Bracket Cond. Fan Motors Freezestats Fan Grille Indoor Blower Motors Blower Wheel Expansion Valve Distributor Exhaust Fans (Opt.) Electrical Control Parts Unit Controller Compressor Contactors Circuit Breakers (Opt.) Transformer (Control) Transformer (Contactor) Blower Contactor Limit, Blower Relay Heat Relays Condenser Fan Relays Capacitor CAB Relay CAB Disconnect Switch (Opt.) Page /2015

61 See unit nameplate for manufacturer and address Litho U.S.A. INSTALLATION INSTRUCTIONS AGENCY REQUIRED RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE PACKAGED GAS AND COOLING UNITS /2015 Supersedes LGH UNITS 3 THROUGH 30 TONS Table of Contents Safety... 1 Connect Gas Piping... 3 High Altitude Derate... 4 Pressure Test Gas Piping... 4 Two Stage Gas Valve Adjustment... 5 Gas Heat Operation... 5 Proper Gas Flow... 5 Typical Gas Heat Schematic... 6 Typical Unit Schematic... 7 Repair Parts Listing... 8 Safety WARNING Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a licensed professional HVAC installer or equivalent, service agency, or the gas supplier Use of this unit as a construction heater or air conditioner is not recommended during any phase of construction. Very low return air temperatures, harmful vapors and operation of the unit with clogged or misplaced filters will damage the unit. If this unit has been used for heating or cooling of buildings or structures under construction, the following conditions must be met or the warranty will be void: The vent hood must be installed per these installation instructions. A room thermostat must control the unit. The use of fixed jumpers that will provide continuous heating or cooling is not allowed. A pre-filter must be installed at the entry to the return air duct. The return air duct must be provided and sealed to the unit. Return air temperature range between 55 F (13 C) and 80 F (27 C) must be maintained. Air filters must be replaced and pre-filter must be removed upon construction completion. The input rate and temperature rise must be set per the unit rating plate. The heat exchanger, components, duct system, air filters and evaporator coil must be thoroughly cleaned following final construction clean-up. The unit operating conditions (including airflow, cooling operation, ignition, input rate, temperature rise and venting) must be verified according to these installation instructions. NOTE - The Commonwealth of Massachusetts stipulates these additional requirements: Gas units shall be installed by a licensed plumber or gas fitter only. The gas cock must be T handle type. The unit is certified for installation on noncombustible floors only. However, it may be installed on wood flooring, or on class A, class B, or class C material covered floors when used in horizontal discharge applications or in downflow discharge applications when mounted on a C1CURB or E1CURB roof mounting frame. Adequate clearance shall be provided around air openings into the vestibule area. Provisions shall be made for proper operation and for combustion air and ventilation air supply. Unit must be adjusted for the temperature rise range and within the allowable external static pressure on furnaces with a duct system as listed on unit nameplate. Page 1

62 United States The unit is ETL/CSA certified for outdoor installations only at the clearances to combustible materials listed on the unit nameplate and in figures 1, 2 and 3. LGH036, 048, 060, 072, 074 UNIT CLEARANCES LGH156, 180, 210, 240, 242, 300, 360 UNIT CLEARANCES Outdoor Air Hood C C D Number of fans varies by model. B B D A A 1 Unit Clearance Service Clearance Clearance to Combustibles Minimum Operation Clearance A in.(mm) 48 (1219) 36 (914) 36 (914) FIGURE 1 B in.(mm) 36 (914) 1 (25) 36 (914) C in.(mm) 36 (914) 1 (25) 36 (914) D in.(mm) 36 (914) 1 (25) 36 (914) Top Clearance Unobstructed Unobstructed Note - Entire perimeter of unit base requires support when elevated above mounting surface. 1 Service Clearance - Required for removal of serviceable parts. Clearance to Combustibles - Required clearance to combustible material. Minimum Operation Clearance - Required clearance for proper unit operation. LGH092, 094, 102, 120, 122, 150, 152 UNIT CLEARANCES C 1 Unit Clearance Service Clearance Clearance to Combustibles Minimum Operation Clearance A in.(mm) 60 (1524) 36 (914) 45 (1143) FIGURE 3 B in.(mm) 36 (914) 1 (25) 36 (914) C in.(mm) 36* (914) 1 (25) 36** (914) D in.(mm) 66 (1676) 1 (25) 41 (1041) Top Clearance Unobstructed Unobstructed Unobstructed Unobstructed *242, 300H and 360 units with high static exhaust fans allow 80in.(2032mm). **242, 300H and 360 units with high static exhaust fans allow 80in.(2032mm). Note - Entire perimeter of unit base requires support when elevated above mounting surface. 1 Service Clearance - Required for removal of serviceable parts. Clearance to Combustibles - Required clearance to combustible material. Minimum Operation Clearance - Required clearance for proper unit operation. Installation of the ETL/CSA certified units must conform with local building codes. In the absence of local codes, units must be installed according to the current National Fuel Gas Code ANSI Z223.1/NFPA 54. D B When installed, the unit must be electrically wired and grounded according to local codes or, in the absence of local codes, with the current National Electric Code, ANSI/NFPA Unit Clearance Service Clearance Clearance to Combustibles Minimum Operation Clearance A in.(mm) 60 (1524) 36 (914) 36 (914) A FIGURE 2 B in.(mm) 36 (914) 1 (25) 36 (914) C in.(mm) 36 (914) 1 (25) 36 (914) D in.(mm) 60 (1524) 1 (25) 36 (914) Top Clearance Unobstructed Unobstructed Unobstructed Note - Entire perimeter of unit base requires support when elevated above mounting surface. 1 Service Clearance - Required for removal of serviceable parts. Clearance to Combustibles - Required clearance to combustible material. Minimum Operation Clearance - Required clearance for proper unit operation. The current American National Standard (ANSI- Z233.1/NFPA54) National Fuel Gas Code is available from the following address: American National Standard Institute Inc. 11 West 42nd Street New York, NY The current National Electric Code (ANSI/NFPA 70) is available from the following address: National Fire Protection Association 1 Batterymarch Park PO Box 9101 Quincy, MA Use only the type of gas approved for use with this furnace. Refer to unit nameplate. LGH Agency Page 2

63 Never test for gas leaks with an open flame. Check all connections with a commercially available soap solution made specifically for leak detection. NOTE - Furnace must be adjusted to obtain a temperature rise (high and low fire) within the range(s) specified on the unit nameplate. Failure to do so may cause erratic limit operation. HONEYWELL VR8305Q SERIES GAS VALVE HIGH FIRE ADJUSTMENT LOW FIRE ADJUSTMENT MANIFOLD OUTLET PRESSURE TAP Canada The unit is CSA International (CSA) certified for combination heating/cooling for outdoor installations and non-residential use only at the clearances to combustible materials as listed on the unit nameplate. Installation of CSA international certified units must conform with current standard CSA B149.1, Natural Gas and Propane Installation Codes and applicable local codes. Authorities having jurisdiction should be consulted before installation. The unit must be wired and electrically grounded according to local codes or, in the absence of local codes, current CSA Standard C22.1 Canadian Electrical Code Part 1. Installation of combination heating/cooling units must also conform with current CSA Standard B52 Mechanical Refrigeration Code. MANIFOLD INLET PRESSURE TAP MANIFOLD PRESSURE ADJUSTMENT SCREW Gas valve knob is shown in OFF position. FIGURE 4 HONEYWELL VR8215S GAS VALVE Single-Stage MANIFOLD PRESSURE OUTLET Connect Gas Piping A manual main shut-off valve must be installed external to the unit when local codes require the installation of such a valve. Install a ground joint union between the gas control manifold and the main manual shut-off valve. When making piping connections a drip leg should be installed on vertical pipe runs to serve as a trap for sediment or condensate. A 1/8 N.P.T. plugged tap is located on gas valve for test gauge connection. See figure 4, 5, 6, or 7 for tap location. See figure 8 for for gas supply piping entry through the side of the unit and figure 9 for gas piping through the bottom of the unit. A kit is required when routing gas supply piping through the bottom of the unit. Compounds used on threaded joints of gas piping must be resistant to the actions of liquified petroleum gases. INLET PRESSURE PORT GAS VALVE SWITCH SHOWN IN ON POSITION. FIGURE 5 WHITE RODGERS 36J54 GAS VALVE Two-Stage MANIFOLD PRESSURE TAP HIGH FIRE ADJUSTMENT INLET PRESSURE TAP Gas valve switch is shown in OFF position. FIGURE 6 LOW FIRE ADJUSTMENT Page /2015

64 INLET PRESSURE TAP WHITE RODGERS 36H54 GAS VALVE Two-Stage MANIFOLD PRESSURE TAP BOTTOM ENTRY GAS PIPING COMPLETED GROUND JOINT UNION TO GAS VALVE HIGH FIRE ADJUSTMENT LOW FIRE ADJUSTMENT STREET ELBOW 7 NIPPLE GAS VALVE SWITCH SHOWN IN ON POSITION. FIGURE 7 OUTSIDE OF UNIT GAS PIPE CONNECTION TO GAS VALVE 2-1/2 NIPPLE DRIP LEG TO GAS SUPPLY MANUAL MAIN SHUT-OFF VALVE Grommets for both gas pipe openings are field provided. FIGURE 9 TO GAS SUPPLY GAS PIPING SUPPORT GROUND JOINT UNION MANUAL MAIN SHUT-OFF VALVE High Altitude Derate FIGURE 8 DRIP LEG (REFER TO LOCAL CODES) Locate the high altitude conversion sticker in the unit literature bag. Fill out the conversion sticker and affix next to the unit nameplate. Refer to table 1 for high altitude adjustments. TABLE 1 HIGH ALTITUDE DERATE Altitude Ft.* Gas Manifold Pressure See Unit Nameplate 4500 And Above Derate 2% / 1000 Ft. Above Sea Level *Units installed at feet do not need to be modified. Pressure Test Gas Piping Operating pressures at the unit gas connection must be as shown in table 2. TABLE 2 OPERATING PRESSURE AT GAS CONNECTION w.c. Natural Gas LP / Propane Gas Min. Max. Min. Max. LGH LGH When testing the pressure of gas lines, the gas valve must be disconnected and isolated. Gas valves can be damaged if subjected to more than 0.5 psig. WARNING FIRE OR EXPLOSION HAZARD Failure to follow the safety warnings exactly could result in serious injury, death or property damage. Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connections. A fire or explosion may result causing property damage, personal injury or loss of life. NOTE This is the only permissible derate for these units. LGH Agency Page 4

65 Two-Stage Gas Valve Adjustment Gas manifold pressures should match pressures shown in table 3. On two stage gas valves, initiate a W2 thermostat demand to check high fire pressure before low fire pressure. With high fire operating, reduce the thermostat demand to W1 and check the low fire pressure. Refer to the Unit Controller manual to initiate a thermostat demand. IMPORTANT - Do not set low fire pressure lower than the certified minimum input rating listed in table 3. TABLE 3 MANIFOLD INPUT PRESSURES in.wg. Unit 036, 048, 060, 072, 074 Std./Med./High Heat 036, 048, 060, 072, 074 Dual Heat Natural Gas 1st Stage nd Stage Propane (LP) Gas 1st Stage nd Stage NA 3.5 NA Gas Heat Operation See the operating instruction plate on the unit for details. Proper Gas Flow (Approximate) 1- Operate unit at least 15 minutes before checking gas flow. Determine the time in seconds for two revolutions of gas through the meter. (Two revolutions assures a more accurate time.) A portable LP gas meter (17Y44) is available for LP applications. 2- Divide the number of seconds by two and compare to the time in table 4. If manifold pressure is correct and rate is incorrect, check gas orifices for proper size and restriction. 3- Remove temporary gas meter if installed. NOTE- To obtain accurate reading, shut off all other gas appliances connected to meter. TABLE 4 GAS METER CLOCKING CHART Unit Input Rate (Btuh) 1 cu ft Dial Seconds for One Revolution Natural LP 2 cu ft Dial 1 cu ft Dial 2 cu ft Dial 65, , , , , , , , , , , , Natural-1000 btu/cu ft LP-2500 btu/cu ft Note: Table assumes standard temperature (60 F), pressure (30in.Hg.), and fuel heating values (Btuh/Ft. 3 ). Apply pressure corrections in altitudes above 2000 ft. Page /2015

66 TYPICAL GAS HEAT SCHEMATIC This schematic is typical. See the wiring schematic on the unit for actual unit wiring. LGH Agency Page 6

67 TYPICAL UNIT SCHEMATIC This schematic is typical. See the wiring schematic on the unit for actual unit wiring. Page /2015

68 Repair Parts Listing When ordering repair parts, include the complete model number and serial number listed on the ETL/CSA rating plate - e.g. LGH120H4BH1Y. Gas Heat Section Parts Heat Exchanger Combustion Air Assembly Combustion Air Proving Switch Burner Assembly Burner Manifold Assembly Main Burner Orifices Flame Roll-out Switches Auxiliary Limit Controls Ignition Electrode Assembly Ignition Lead Ignition Sensor Assembly Sensor Lead Combination Gas Valve Limit Controls Cooling Parts Compressors Condenser Fan Motors Condenser Fan Blades Condenser Fan Run Capacitors Freezestats Condenser Fan Mounting Bracket Fan Grille Indoor Blower Motors Blower Wheel Expansion Valve Distributor Exhaust Fans (Opt.) Electrical Control Parts Unit Controller Compressor Contactors Circuit Breakers (Opt.) Transformer (Control) Transformer (Contactor) Blower Contactor Limit, Blower Relay Heat Relays Condenser Fan Relays Capacitor CAB Relay CAB Disconnect Switch (Opt.) LGH Agency Page 8

69 2015 Litho U.S.A /2015 Supersedes 3/2015 PRODIGY 2.0 INSTALLATION AND SETUP GUIDE Prodigy 2.0 (M3 Unit Controller) Installation and Setup Guide Description Table Of Contents Description... 1 M3 Unit Controller - Connections, Input/Outputs, jumpers and LEDs Locations... 2 System Status Screen... 4 Firmware Update... 6 Configuration Identifier Settings... 7 Level 1 Menu Level Selections Menu Interface Details Blower Operation with Effective Occupancy Economizer Networking Serial Communications (RS-485) APPENDIX: Abbreviations Parts List USB Service Report Example Alarm Codes Controller Signal References Wiring Diagrams Quick Start Guide The M3 unit controller: provides control functions for Energence Rooftop Units, includes a 4 x 20 LCD display, USB port, menu selection LED, and various navigation tools, provides status and diagnostic information for troubleshooting, allows adjustment of time delays and setpoints that enable advanced features, is controlled by a standard room thermostat, direct digital controller (DDC), or a room sensor, can be configured as a device on the network when daisy-chained to the L Connection Network, may be connected to a PC which has been loaded with unit controller software, accepts add-on boards to build variations according to application or equipment type. USB verification and profile sharing. For all available M3 unit controller documentation, see the Lennox Commercial website. Start-Up Procedure WARNING Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a qualified installer, service agency or the gas supplier 1. Turn on unit and dismiss alarm messages as necessary. 2. Follow SETUP > INSTALL menu to properly configure unit 3. Be sure unit is in normal operating mode as seen on display (COOLING, HEATING, IDLE, etc). 4. To verify operation use SERVICE > TEST menu. See Quick Start Guide section at the end of this manual for additional information.

70 M3 Unit Controller - Connections, Inputs/Outputs, Jumpers, and LEDs Locations NO DEMAND - OAS ZAT: 56.0F DAT: 75.0F UNOCC 3A 3C 5 3B 2 1A 6 4 1B 5. Thermostat / Humidistat Common Isolation: Thermostat (TSTAT) and humidity (HUM) sensor commons located on connector P298 may be isolated if they are powered remotely. Remove jumper. A TSTAT_COM Jumper: This jumper is located to the left of P297 connector. This jumper would be removed only in unique situations where the device supplying the thermostat signals to the M3 unit controller has its own power source and does not share a common reference voltage with the M3 unit controller. Otherwise the jumper would remain installed across both pins, as shipped from the factory. B HMD_COM Jumper: This jumper is located to the right of P299 connector. This jumper would be removed only in unique situations where the device supplying the thermostat/humidistat signals to the M3 unit controller has its own power source and does not share a common reference voltage with the M3 unit controller. Otherwise the jumper would remain installed across both pins, as shipped from the factory. 6. USB Flash Drive Interface Usage: This USB port is used for verifying service, downloading reports, transferring unit profiles and performing firmware updates. Onsite data collection requires use of a USB flash drive. Data written to the drive includes date, time, serial number, catalog number, basic data, error code buffer, and unit configuration. 7. Communication Interfaces: These interfaces are used with unit controller software to change programming. A USB: The M3 interface uses a USB A to B male cable for PC connection. B S-BUS: This is the L-connection connection interface. This is a R485 network connection with other devices (NCP, comfort sensors, other RTU, etc.) C RJ-11 Phone Jack: S-Bus connection is for factory tests. It is RS485 connection to the RJ-11 phone jack. Some DDC controllers may also be connected. A list of service connection kits is listed on page SmartWire Field Wiring Connections (P297, P298 and P299): These connectors allow for easy field wiring connection points. The M3 unit controller connects to the rooftop unit using SmartWire connectors. Each connector is keyed so that no connector can be installed in the incorrect location. Be sure all connectors are in place and completely inserted. 9. Communication Module Interface: This connection is used for either BACnet or LonTalk communication modules. 10. LED Indicators: Some indicators on the circuit board are visible with the cover in place; others are not. The indicators and their meanings are described in table 1. Page 2

71 Table 1. LED Operation Indications LED Status Indication Meaning Green Slow Flash Normal Operation Heartbeat (HB) (D33) Green Fast Flash Bootloader / firmware update mode UNLIT Steady Off No voltage to M3 board or defective board Green Steady On Unit in configuration / test mode (not in normal mode) S-BUS / PC Connection (D70 and D71) BACnet (option) - LEDs located on module LonTalk (option) - LEDs located on module Thermostat Input BUS (green) Flickering ON Network traffic present TX (yellow) Flickering ON Unit controller is transmitting RX (green) Flickering ON Unit controller is receiving TX (yellow) Flickering ON Unit controller is transmitting RX (green) Flickering ON Unit controller is receiving TX (yellow) Flickering ON Unit controller is transmitting SERVICE (red) Flashing 1 sec. on; 1 sec. off Node is not configured; application loaded SERVICE (UNLIT) Steady off Node is completely configured SERVICE (red) Constant on Node is configured; no application loaded SERVICE (red) Yellow Quick flashes during initialization Indicates a thermostat demand Messages being passed to M3; normal operation G - Blower on (D17) W1 - First-Stage Heating (D20) W2 - Second -Stage Heating (D23) Y1 - First-Stage Cooling (D26) Y2 - Second-Stage Cooling (D29) OCP - Occupied (D32) GLO - Global input (D38) Thermostat LEDs indicate only with incoming thermostat connection via SmartWire connectors. Slow Flash = 1 second on; 1 second off. Fast Flash = ½ second on; ½ second off. A flickering LED flashes significantly faster than a fast flash. NOTE - LEDs are energized by 24VAC thermostat inputs. CAUTION ELECTROSTATIC DISCHARGE (ESD) Precautions and Procedures Electrostatic discharge can affect electronic components. Take precautions during unit installation and service to protect the unit's electronic controls. Precautions will help to avoid control exposure to electrostatic discharge by putting the unit, the control and the technician at the same electrostatic potential. Neutralize electrostatic charge by touching hand and all tools on an unpainted unit surface before performing any service procedure Page 3

72 System Status Screen The display shows operating mode if in normal operation. Alarms will interrupt the display. Alarm messages will appear on the display and remain there until dismissed. Dismissing an alarms is just clearing the alarm from using the entire screen to display the condition(s). The alarm condition still exist and up to two alarm codes are displayed along the right side of the screen above the thermostat demand type status. To dismiss an alarm, press the BACK button. NETWORK STATUS NORMAL MODE MESSAGE ZONE AND DISCHARGE AIR TEMPERATURES COOLING LON ON 74, 93 RAT: 76.0F Y1 DAT: 57.0F UNOCC OCCUPIED (OCC) OR UNOCCUPIED (UNOCC) FIRST TWO ALARMS THAT ARE ACTIVE Figure 1. System Status Display THERMOSTAT DEMAND TYPE Network Status The second line on the left side (see figure 1) is used for displaying network status. The status will indicate either ON or OFF for the network employed. Network types are listed in table 2. Screen Label LON BACNET LCONN RTU Table 2. Network Status Network Type LonTalk BACnet L-Connection Rooftop Unit (this is not a networking status, but indicates if the RTU is ON or OFF. Unit Operation This section describes the display and control buttons, how to configure the unit, and how to read stored configuration data, status, and alarms. The M3 unit controller is an input and output junction point. If in the thermostat mode, thermostat inputs at P297 result in an output to unit components (see table 11 on page 48). If the heartbeat LED is not flashing, see table 1 on page 3 for heartbeat operation. If the display shows an alarm, refer to alarm section for more information. If the thermostat input indicating lights are not responding appropriately, check the thermostat or a DDC control acting as thermostat inputs into P297. Basic cooling and heating functions may be energized to test major unit components by using the M3 unit controller testing function or by using jumper wires on the Field Wiring Termination plug P297. Alarm Status Display Figure 2 shows how alarms are displayed. Alarming value may indicate the condition which triggered the alarm (temperature, voltage, pressure, time, etc.). ALARM(S) ARE PRESENT - ALARM CODE, ALARMING VALUE, AND DATE TIME STAMP (HOUR, MINUTE AND SECONDS) OF ALARM EVENT. ALARM : 02: 24 ALARMING VALUE = 0 AIR FLOW SWITCH CON COMPLETE ALARM LISTING AND DESCRIPITIONS ARE AVAILABLE BY SCROLLING DOWN (A DOWN AR ROW ON THE SCREEN INDICATES MORE TEXT FOLLOWS) WHILE THE ALARM IS SHOWING ON THE STATUS SCREEN, PRESS THE HELP BUTTON FOR FURTHER DETAILS CONCERNING THE ALARM. Figure 2. Alarm Code Readout Example Page 4

73 Normal Mode Messages The format of the message is mode and setpoint (see table 3). Table 3. Possible MODE messages COMP LOAD SHEDDING Unit is running at lower power capacity COOLING Cool demand present; unit is in mechanical cooling. DEHUMIDIFICATION Unit is dehumidifying FREE COOLING Cooling demand is present, no compressor cooling. FRESH AIR COOLING Cool ventilation air to neutral value FRESH AIR HEATING Heat ventilation air to neutral value HEATING Heat demand present; unit is heating CONTROLLER LOCKOUT User has disabled controller operation. LOW AMBIENT LOCKOUT Outdoor air is too cold to allow compressors to run. MORNING WARMUP Outdoor air damper closed Unit is off due presence of alarm(s) that the system has determined will halt system operations. This system status could be present with no active alarms, which usually indicates OFF ON ALARM the alarm condition(s) are no longer present. If the system has cleared the alarm there is usually a five minute delay before resuming system operations. NOTE: Not all alarms will halt system operation. The first two active alarms are displayed on the main system status screen (see figure 2). Compressor not allowed free cooling. (During the first 30 minutes of the first cooling PRE-COOL demand following a change from unoccupied to occupied, calls for mechanical [compressor] cooling are ignored if an economizer is installed and if outdoor air is suitable for free cooling.) PREINSTALL Unit has not been set up for operation. Must follow installation menus START UP Default start up delay before servicing demands. Go to M3 user interface: SETUP > IN STALL SMOKE ALARM Smoke input detected TEST Network has unit in test mode BLOWER ON Indoor blower is on. BLOWER ON - OAS Indoor blower is on and outdoor air is suitable. NO DEMAND System not receiving a demand for cooling or heating. NO DEMAND - OAS System not receiving a demand for cooling or heating and outdoor air is suitable. COOL + MAX OPEN ECON Mechanical cooling is operating with maximum free cooling. COOL + MODULATE ECON Mechanical cooling is operating with variable free cooling. Page 5

74 Firmware Update Unit Controller USB Flash Drive Update Capability Firmware updating is available using the USB port. To display the current firmware version, navigate to menu DATA > FACTORY > SOFTWARE VERSION. Updating Firmware The firmware on the M3 unit controller can be updated by inserting a USB flash drive containing the update. NOTE - Flash drive media must be formatted using the FAT32 file system. Files needed for update Files needed to upgrade M3 unit controller from USB flash drive: M3XXXXXXXX.P2F (ALL UPPERCASE) The xxxxxxxx are place holders for major and minor versions and build number information in the actual file name, and varies from one version to the next. Where to place the.p2f file on the USB flash drive. 1. Firmware folder is located in the root directory of the USB flash drive. (Note: Drive letter may differ from the one illustrated below. 2. The M3 folder is located under the Firmware folder. 3. Place a copy of the.p2f file into the M3 folder. M3XXXXXXXX.P2F file goes here. (.P2F file name suffix must be in all CAPS. Updating Firmware 1. After inserting the USB flash drive, navigate to SERVICE > SOFTWARE UPDATE. 2. Press the SELECT button, then use the adjust values (up/down) arrows to select a firmware version. 3. Press SAVE. 4. The following update sequence should occur: SOFTWARE UPDATE STARTING SOFTWARE UPDATE ERASING FLASH SOFTWARE UPDATE PROGRAMMING FLASH SOFTWARE UPDATE PROGRAMMING FLASH PROGRESS xx% (xx% indicates update percentage completed) SOFTWARE UPDATE RESETTING CONTROLLER. 5. After the unit controller resets, the first screen to appear will display the following (xx.xx.xxxx indicates the software version number): PRODIGY 2.0 M3 CONTROLLER xx.xx.xxxx 6. You may remove the USB flash drive anytime after the reset is completed. 7. Firmware version can also be verify by navigating to menu DATA > FACTORY > SOFTWARE VERSION. NOTE - Firmware updates do not alter the unit controller configuration settings. All settings will be retained after the firmware has been updated. Saving and Loading User Profile When saving the user profile, all information concerning model number, configuration ID1 / ID2, parameters modified using the EDIT PARAMETER option and Test & Balance information are all stored to a non-volatile location in memory. The reference tasks are available from the M3 unit controller user interface: 1. To SAVE a user profile, go to SERVICE > REPORT > SAVE USER PROFILE = YES 2. To LOAD a user profile, go to SERVICE > REPORT > LOAD USER PROFILE = YES Saving and Loading USB Profile The USB Profile utility allows a copy of the profile to be save to a USB storage device. Only EDIT PARAMETER changed settings and Test & Balance information is saved. The installer will need to configure the Model Number, and Configurations ID 1 / ID2 first before loading the saved USB profile. The USB Profile is typically used when replacing the M3 unit controller with a new one. The reference tasks are available from the M3 unit controller user interface: 1. To SAVE a USB Profile, go to SERVICE > REPORT > USB PROFILE SAVE > enter a unique name for the profile and press SAVE. 2. To LOAD a USB Profile, go to SERVICE > REPORT > USB PROFILE LOAD > use the adjust and save values arrows to select highlight the desired profile and press SAVE. Page 6

75 Configuration Identifier Settings (Model Number and Configuration ID 1 / 2) This section addresses the requirement that specific configuration information must be completed using the SETUP / INSTALL feature if a new unit controller was being installed. Other requirements are the addition of accessories that were not factory-installed. Model number, configuration ID 1 and 2, catalog number, serial number and RTU description are all key items required to be completed for the system to operate correctly. Running the SETUP / INSTALL wizard allows the installer to verify that all fields have been completed as required. Model Number Type [1, 2, 3] Electric = LCH Gas = LGH Tonnage [4, 5, 6] See unit nameplate for applicable tonnage designation. [12] Voltage See unit nameplate for applicable electric voltage designation. [11] Design Sequence 1 = First revision [10] Factory Electric or Gas Heat See unit nameplate for applicable electric or gas heat designation. Efficiency [7] High Efficiency = H Standard Efficiency = S Ultra Efficiency = U Refrigerant [8] HFC-410A = 4 Blower Type [9] Belt Drive (1 speed) = B Direct Drive = D Direct Drive ECM = E MSAV Belt Drive = M Belt Drive (2 speed) = T IMPORTANT: Always refer to the model information listed on the unit nameplate when setting these options. Figure 3. Model Number Page 7

76 IMPORTANT: Always refer to the white sticker titled ORIGINAL FACTORY UNIT CONFIGURATION located inside the control box area. CONFIGURATION ID Humiditrol [1] Not Installed = N Humiditrol Installed = H Unconfigured = U Economizer [2] Not Installed = N Motorized Outdoor Air Damper Only = M Economizer - Temperature = T Economizer Global = G Economizer - Single Enthalpy = S Economizer - Dual Enthalpy = D Unconfigured = U Power Exhaust [3] Not Installed = N Single-Stage = S Dual-Stage = D Variable Speed Drive = V Unconfigured = U Power Exhaust Control [4] Not Installed = N Damper Position = A S37 Pressure Switch = B A34 Pressure Sensor = C A34 Pressure Sensor with Enable Switch = D S27 and S39 Pressure Switch = E [8] Outdoor Air CFM Control N = Not applicable (for future use) L = Outdoor Air Control Installed with A24 Sensor set for low range. M = Outdoor Air Control Installed with A24 Sensor set for medium range. H = Outdoor Air Control Installed with A24 Sensor set for high range. [7] Advanced Air Flow Control System N = Not Installed S = Installed with Standard Economizer L = Installed with High Performance Economizer U = Unconfigured [6] Blower Variable Frequency Drive Bypass N = Not Installed A = Automatic Bypass M = Manual Bypass U = Electronic Bypass Field Un-configured [5] Network Module N = Not Installed B = BACnet L = LonTalk (Lennox) NOTE - The M3 unit controller will display applicable alarm(s) if any positions is left unconfigured (U). Figure 4. Configuration ID 1 Page 8

77 IMPORTANT: Always refer to the white sticker titled ORIGINAL FACTORY UNIT CONFIGURATION located inside the control box area. Air Flow Proving Switch (S52) [1] Not Installed = N Installed on M3 = C Installed on DDC Controller = D Dirty Filter Switch (S27) [2] Not Installed = N Installed on M3 = C Installed on DDC Controller = D Overflow Switch (S149 / S179) [3] Not Installed = N Installed on DI-2 = 2 Installed on DI-3 = 3 CONFIGURATION ID [9] Electric Heat N = Not Installed Y = Installed [8] Load Shedding N = Not Installed G = Global (P297 - pin 9) 2 = Installed on DI-2 3 = Installed on DI-3 [7] Zone Bypass Damper N = Not Installed Y = Installed Motor Overload [4] Switch (S42) Not Installed = N Installed on DI-2 = 2 Installed on DI-3 = 3 * When Phase / Voltage detection monitoring is enabled on threephase system and configured incorrectly will cause the system to go to demand hold and restart after 3 minutes. [6] Ultra Violet Lamp N = Not Installed Y = Installed [5] Phase / Voltage Detection* N = Not Installed 1 = Enabled Internal (Lennox) 2 = External (A42) Phase Detection on DI-2 3 = External (A42) Phase Detection on DI-3 Figure 5. Configuration ID 2 Page 9

78 Level 1 Menu Options SELECT BACK SCROLL YES ALARMS, ZAT, DAT, OCC OR UNOCC, DEMAND STATUS SHOW STATUS DATA SETUP ALARMS PRESENT? NO ZAT, DAT, OCC OR UNOCC, DEMAND STATUS SERVICE SETTINGS TEST INSTALL HISTORY CONTROL Use SCROLL arrows to move RTU OPTIONS Use SCROLL arrows to move REPLACE REPORT Use SCROLL arrows to move NETWORK INTEGRATION TEST & BALANCE Use SCROLL arrows to move IN/OUTPUTS FACTORY INSTALL NETWORK SOFTWARE UPDATE GENERAL ADVANCED STATUS OFFLINE RUNTIMES Page 10

79 Menu Interface Details Table 4 lists the major levels of the menu interface. Many of these options have more levels and are described in the following sections that detail DATA, SETUP, SERVICE, and SETTINGS. Use SELECT button to progress to next menu level (i.e. level 1 to level 2). Use the SCROLL arrows to move (scroll) within a menu level. Use the BACK button to return to the previous menu level. Use the Adjust and set value arrows to change values of selected item. Table 4. Menu Interface (Level 1 - DATA) Level 2 Level 3 Level 4 Level 5 Level 6 ALARMS HISTORY CLEAR ALARM HISTORY = NO OR YES LAST SERVICE (TIME STAMP OF LAST SERVICE) IN/OUTPUTS SENSORS LOCAL NETWORK THERMOSTAT BLOWER SPEED: X OAT: XX F RAT: XX F DAT: XX F ZAT (A2): XX F C02: XX PPM OAV: XX FT/MIN BP: XX IN H20 RH: XX % IE OE GLO: ON/OFF OCP: ON/OFF SMOKE: ON/OFF D12: ON/OFF D13: ON/OFF REHEAT D14: ON/OFF SUCTION1: XX PSIG SUCTION2: XX PSIG C1 SUMP: XX F C2 SUMP: XX F C3 SUMP: XX F C4 SUMP: XX F THERMOSTAT ZAT (A2): XX F C02: XX PPM RH: XX % G: ON/OFF W1: ON/OFF W2: ON/OFF Y1: ON/OFF Y2: ON/OFF G: ON/OFF W1: ON/OFF W2: ON/OFF Y1: ON/OFF Y2: ON/OFF Page 11

80 Table 4. Menu Interface (Level 1 - DATA) Level 2 Level 3 Level 4 Level 5 Level 6 FACTORY NETWORK OUTPUTS (NOTE: COMPONENTS ARE ONLY DISPLAYED IF IN STALLED.) SOFTWARE VERSION RTU DESCRIPTION CATALOG NUMBER MODEL NUMBER SERIAL NUMBER CONFIGURATION ID 1 CONFIGURATION ID 2 BACNET LONTALK L-CONNECTION COMPRESSOR 1: ON/OFF COMPRESSOR 1: ON/OFF COMPRESSOR 3: ON/OFF COMPRESSOR 4: ON/OFF BLOWER: ON/OFF EXHAUST: ON/OFF FAN 1: ON/OFF FAN 2: ON/OFF FAN 3: ON/OFF FAN 4: ON/OFF FAN 5: ON/OFF FAN 6: ON/OFF HEAT 1: ON/OFF HEAT 2: ON/OFF HEAT 3: ON/OFF HEAT 4: ON/OFF REHEAT COIL 1: ON/OFF REHEAT COIL 2: ON/OFF SERVICE RELAY: ON/OFF LCD HEATER: ON/OFF CRANKCASE HEATER 1: ON/OFF CRANKCASE HEATER 2: ON/OFF CRANKCASE HEATER 3: ON/OFF CRANKCASE HEATER 4: ON/OFF MAC ADDRESS: XXX BAUD RATE: XXXXX DEVICE INSTANCE: X PROGRAM ID NEURON ID LCONN ADDRESS: X Page 12

81 Table 4. Menu Interface (Level 1 - DATA) Level 2 Level 3 Level 4 Level 5 Level 6 CURRENT ALARMS ACTIVE ALARMS XXX OCC HEAT SETPOINTS UNOCC HEAT OCC COOL UNOCC COOL APP MODE ADVANCED STATUS RUNTIMES BLOWER DAMPER BELT X HRS BLOWER X HRS BLOWER X CYC COOLING EXHAUST X HRS FANS FILTER X HRS FREE COOL X HRS FREE COOL X CYC HEATING DEHUMID X HRS DEHUMID X CRC POWER ON X CYC POWER ON X HRS PREINSTALL X HRS UV LAMP XXX HRS BLOWER STATUS DAMPER STATUS COMP 1: XX HRS - XX CYCLES COMP 2: XX HRS - XX CYCLES COMP 3: XX HRS - XX CYCLES COMP 4: XX HRS - XX CYCLES STAGE 1: XX HRS - XX CYCLES STAGE 2: XX HRS - XX CYCLES FAN 1: XX HRS - CYCLES FAN 2: XX HRS - CYCLES FAN 3: XX HRS - CYCLES FAN 4: XX HRS - CYCLES FAN 5: XX HRS - CYCLES FAN 6: XX HRS - CYCLES FILTER X HRS FREE COOL X HRS FREE COOL X CYC HEAT 1: XX HRS - XX CYCLES HEAT 2: XX HRS - XX CYCLES HEAT 3: XX HRS - XX CYCLES HEAT 4: XX HRS - XX CYCLES DEHUMID X HRS DEHUMID X CRC POWER ON X CYC POWER ON X HRS PREINSTALL X HRS UV LAMP XXX HRS BLOWER SPEED 0.0 % AND 0 RPM. (if advanced airflow is enabled) ACTUAL SUPPLY CFM TARGET SUPPLY CFM TARGET: X % ACTUAL X % (if advanced airflow is enabled) ACTUAL OA CFM TARGET OA CFM ECON DIFF PRESSURE Page 13

82 Table 5. Menu Interface (Level 1 - SETUP) Level 2 Level 3 Level 4 Level 5 Level 6 INSTALL LANGUAGE = DATE/TIME = DISPLAY UNITS F/C MODEL NUMBER = CONFIGURATION ID 1 CONFIGURATION ID 2 CATALOG NUMBER SERIAL NUMBER = ENGLISH, ESPANOL, OR FRANCAIS = DAY, MONTH, YEAR, HOURS, MINUTES, SECONDS = FAHRENHEIT OR CELSIUS LOCATED ON UNIT NAMEPLATE. SEE WHITE STICKER TITLED ORIGINAL FACTORY UNIT CONFIGURATION LOCATED ON THE RIGHT SIDE OF THE CONTROL BOX NEAR THE M3 CONTROLLER. WHITE STICKER TITLED ORIGINAL FACTORY UNIT CONFIGURATION LOCATED ON THE RIGHT SIDE OF THE CONTROL BOX NEAR THE M3 CONTROLLER. LOCATED ON UNIT NAMEPLATE LOCATED ON UNIT NAMEPLATE RTU DESCRIPTION = UP TO 18 ALPHA/NUMERIC CHARACTERS = NONE OR REHEAT DI4 DEHUMIDIFIER SENSOR TYPE = LOCAL SENSOR OR DEHUMIDIFIER DEHUMID SETPOINT = X.XX % NETWORK SENSOR DEHUMIDIFIER DEHUMID DEADBAND = X.X % NOTE: PARAMETERS AVAILABLE ARE DEPENDENT ON MODEL NUMBER AND CONFIGURATION ID 1 AND 2 SETTINGS LCONN ADDRESS = X NETWORK = L-CONNECTION CONTROL MODE = ROOM SENSOR, MON ITOR ONLY OR NET WORK THERMOSTAT NETWORK SENSOR CO2 = YES OR NO NETWORK SENSOR RELATIVE HUMIDITY = YES OR NO NETWORK SENSOR TEMPEATURE = YES OR NO ROOM SENSOR OCC BLOWER MODE= AUTO CYCLES OR ON- CONTINUOUS 1, 2 OR 3 * BACKUP MODE = NONE, ROOM SENSOR, RETURN AIR BACKUP OR THERMOSTAT BACKUP SETPOINTS OCCUPIED HEAT = XX.X F BACKUP SETPOINTS UNOCCUPIED HEAT = XX.X F BACKUP SETPOINTS OCCUPIED COOL = XX.X F BACKUP SETPOINTS UNOCCUPIED COOL = XX.X F NETWORK INTEGRATION NETWORK = BACNET * OCC (OCCUPIED) BLOWER MODE DESCRIPTION: AUTO CYCLE: BLOWER CYCLES WITH DEMAND ON-CONTINUOUS 1: BLOWER IS ON WITH EITHER THE OCCUPANCY SENSOR OR OCCU PANCY SCHEDULER INDICATES OCCUPIED. ON-CONTINUOUS 2: BLOWER IS ON ONLY WITH BOTH THE OCCUPANCY SENSOR AND OCCUPANCY SCHEDULER, BOTH INDICATES OCCUPIED. ON-CONTINUOUS 3: BLOWER IS ON ONLY WHEN BOTH THE OCCUPANCY SENSOR AND OCCUPANCY SCHEDULER INDICATES OCCUPIED. IN ADDITION, BLOWER WILL BE ON A MINIMUM OF 25% OF THE TIME WHEN OCCUPANCY SCHEDULER INDICATES OCCUPIED BUT THE OCCUPANCY SENSOR INDICATES NOT OCCUPIED. THE 25% MINIMUM IS ACHIEVED BY TURNING BLOWER ON FOR 30 MINUTES AND OFF FOR 90 MINUTES. BACNET MAC ADDRESS = X BACNET BAUD RATE = 9.6, 19.2, 38.4 OR 76.8 K CONTROL MODE = ROOM SENSOR, MON ITOR ONLY OR NET WORK THERMOSTAT NETWORK SENSOR CO2 = YES OR NO NETWORK SENSOR RELATIVE HUMIDITY = YES OR NO NETWORK SENSOR TEMPERATURE = YES OR NO ROOM SENSOR OCC BLOWER MODE= AUTO CYCLES OR ON- CONTINUOUS 1, 2 OR 3 (SEE DESCRIPTION ABOVE) BACKUP MODE = NONE, ROOM SENSOR, RETURN AIR BACKUP OR THERMOSTAT BACKUP SETPOINTS OCCUPIED HEAT = XX.X F BACKUP SETPOINTS UNOCCUPIED HEAT = XX.X F BACKUP SETPOINTS OCCUPIED COOL = XX.X F BACKUP SETPOINTS UNOCCUPIED COOL = XX.X F Page 14

83 Table 5. Menu Interface (Level 1 - SETUP) Level 2 Level 3 Level 4 Level 5 Level 6 TEST & BALANCE NETWORK = LONTALK NETWORK = RTU STANDALONE CONTROL MODE = ROOM SENSOR, MON ITOR ONLY OR NET WORK THERMOSTAT BACKUP MODE = NONE OR RETURN AIR BACKUP NETWORK SENSOR CO2 = YES OR NO NETWORK SENSOR RELATIVE HUMIDITY = YES OR NO NETWORK SENSOR TEMPERATURE = YES OR NO ROOM SENSOR OCC BLOWER MODE= AUTO CYCLES OR ON- CONTINUOUS 1, 2 OR 3 (SEE DESCRIPTION ABOVE) BACKUP MODE = NONE, ROOM SENSOR, RETURN AIR BACKUP OR THERMOSTAT BACKUP SETPOINTS OCCUPIED HEAT = XX.X F BACKUP SETPOINTS UNOCCUPIED HEAT = XX.X F BACKUP SETPOINTS OCCUPIED COOL = XX.X F BACKUP SETPOINTS UNOCCUPIED COOL = XX.X F SETPOINTS HEAT = XX.X F SETPOINTS COOL = XX.X F NOTE: PARAMETERS AVAILABLE ARE DEPENDENT ON MODEL NUMBER AND CONFIGURATION ID 1 AND 2 SETTINGS. BLOWER CALIBRATION HIGH SPEED = CALIBRATION DONE OR TURN BLOWER ON BLOWER DAMPER BLOWER HEAT = XXXX CFM BLOWER COOLING HIGH = XXXX CFM BLOWER COOLING LOW = XXXX CFM BLOWER VENTILATION = XXXX CFM ON (TARGET XXXX CFM) ADJUST BLOWER RPM = XXXX RPM ECONOMIZER TEMP ECON TYPE = TEMPER ATURE OFFSET OR TEMPERATURE SETPT ECONOMIZER OAT SETPOINT = XX.X F. ECONOMIZER ENTHALPY SETPOINT = XX MA ECONOMIZER ENTHALPY OFFSET = XX MA FREE COOLING SUPPLY AIR SETPOINT = XX.X F DAMPER OUTDOOR AIRFLOW = XXX CFM ADVANCED AIRFLOW ALARMS = ENABLED OR DISABLED (ONLY VISIBLE IF CONFIGURATION ID 1, POSITION 2 IS SET CORRECTLY). VENTILATION OPTIONS IF DCV IF BPC NOTE: THIS OPTION IS DEPENDANT ON CONFIGURATION ID 1 SETUP. NOTE: THESE OPTIONS ARE DEPENDANT ON CONFIGURATION ID 1 SETUP. ADV AIRFLOW ALARMS LO SPLY AIRFLOW ALM = XX% ADV AIRFLOW ALARMS LO OD AIRFLOW ALM = XX% ADV AIRFLOW ALARMS HI OD AIFLOW ALM = XX% ADV AIRFLOW ALARMS ALM TRIGGER PERI OD = XXXX SEC DEMAND CONTROL VENTILATION BUILDING PRESSURE CONTROL DEMAND CONTROL VENT > DAMPER START OPEN = XXX PPM DEMAND CONTROL VENT > DAMPER FULL OPEN = XXXX.X PPM DEMAND CONTROL VENT > DAMPER MAX OA CFM = X CFM (ONLY VISIBLE IF CONFIGURATION ID 1, PO SITION 2 IS SET CORRECTLY). DEMAND CONTROL VENT > DAMPER MAX OPENING = XXX.X %. BUILDING PRESS CTROL > PRESSURE SET POINT = X.X IN H20. OUTDOOR AIR CONTROL (ONLY VISIBLE IF CONFIGURATION ID 1, POSITION 8 IS SET VELOCITY SETPOINT = XXX FT/MIN CORRECTLY) POWER EXHAUST ON BY ECON TRAVEL = XX.X % Page 15

84 Table 5. Menu Interface (Level 1 - SETUP) Level 2 Level 3 Level 4 Level 5 Level 6 FRESH AIR HEATING ENABLE FAH = NO OR YES FRESH AIR COOLING ENABLE FAC = YES OR NO FRESH AIR HEATING FAH SETPOINT = XX F FRESH AIR COOLING AFC SETPOINT = XX F NOTE: PARAMETERS AVAILABLE ARE DEPENDENT ON MODEL NUMBER AND CONFIGURATION ID 1 AND 2 SETTINGS. Table 6. Menu Interface (Level 1 - SERVICE) Note: Available menu options are dependent on hardware configuration. Test Menu Section: Each major component of the M3 unit controller will include a test mode to verify critical component and system performance. All blower testing will remain active for two hours unless terminated by the user. Level 2 Level 3 TEST REPLACE COOL HEAT BLOWER DAMPER FANS DEHUMIDIFIER Use the Adjust and set values arrows to scroll up or down for selection options. OPTIONS ARE COOL 1, COOL 2, COOL 3 AND COOL 4. OPTIONS ARE HEAT 1, HEAT 2, HEAT 3 AND HEAT 4. BLOWER HI BLOWER LOW PROVING SWITCH FILTER SWITCH RPM XX RPM SPEED XX RPM POSITION EXHAUST 1 OR 2 FAN 1 (OR FAN L) FAN 2 (OR FAN H) FAN 3 THROUGH 6. OPTIONS ARE HUM 1 AND HUM 2 OUTPUTS SERVICE RELAY SERVICE RELAY ON FILTER RESET RUNTIME? = NO OR YES BELT (only available based on model number) UV LAMP FANS (1 through 6) BLOWER COMPRESSOR (1 through 4) RESET RUNTIME? = NO OR YES WHEN SELECTED (PRESS BACK TO RETURN TO THE PREVI OUS MENU) COOL X ODN RAT: XX.X F DAT: XX.X F (if advanced airflow is enabled then ACTUAL CFM is displayed.) or NOT APPLICABLE EQUIPMENT NOT PRESENT HEAT X ON RAT: XX.X F DAT: XX.X F (if advanced airflow is enabled then ACTUAL CFM is displayed.) or NOT APPLICABLE EQUIPMENT NOT PRESENT BLH ON/OFF SET POINT BLL ON/OFF SET POINT PSW CLOSED/OPEN SET POINT FSW CLOSED/OPEN SET POINT FSW CLOSED/OPEN SET POINT TD: XX (IF COMPRESSOR IS TURNED ON) ACTUAL: 0.1%. NOTE: THIS FUNCTION IS ONLY AVAILABLE IF CONFIGURATION ID 1, POSITION 2 HAS BEEN CONFIGURED. SET ON/OFF SETPOINT (EX1 OR EX2 ON/OFF ACTUAL) FN1 (OR FL) ON/OFF SETPOINT FN2 (OR FH) ON/OFF SETPOINT ON/OFF WHEN SELECTING OPTION, RESPONSE WILL BE EITHER DEHU MIDIFIER X ON OR NOT APPLICABLE EQUIPMENT NOT PRESENT. RESET RUNTIME? = NO OR YES OR NOT APPLICABLE EQUIPMENT NOT PRESENT RESET RUNTIME? = NO OR YES OR NOT APPLICABLE EQUIPMENT NOT PRESENT RESET RUNTIME? = NO OR YES RESET RUNTIME? = NO OR YES OR NOT APPLICABLE EQUIPMENT NOT PRESENT Page 16

85 Table 6. Menu Interface (Level 1 - SERVICE) Note: Available menu options are dependent on hardware configuration. Test Menu Section: Each major component of the M3 unit controller will include a test mode to verify critical component and system performance. All blower testing will remain active for two hours unless terminated by the user. Level 2 Level 3 REPORT SOFTWARE UPDATE OFFLINE USB SERVICE REPORT USB ADV AIRFLOW RPT SAVE USER PROFILE LOAD USER PROFILE USB PROFILE SAVE USB PROFILE LOAD LOAD FACTORY PROF LOG SERVICE EVENT SOFTWARE UPDATE CLEAR DELAYS RESET CONTROLLER CONTROLLER LOCKOUT Use the Adjust and set values arrows to scroll up or down for selection options. WHEN SELECTED (PRESS BACK TO RETURN TO THE PREVI OUS MENU) USB SERVICE REPORT = DEFAULT VALVE IS THE SERIAL NUMBER IF SET. OTHERWISE IT WILL BE CAN BE RENAMED BY USER. MAXIMUM 18 CHARACTERS. USB ADVANCED AIRFLOW REPORT = START USB RE PORT OR USB REPORT DONE. SAVE USER PROFILE = YES OR NO LOAD USER PROFILE = YES OR NO START USB REPORT = SAF_RPT (DEFAULT) AND CAN BE RE NAMED BY USER. MAXIMUM 18 CHARACTERS. USB PROFILE SAVE = 1234 UNLESS CATALOG NUMBER IS SET. DEFAULT IS CATALOG NUMBER. CAN BE RENAMED BY USER. MAXIMUM 18 CHARACTERS. USB PROFILE LOAD = 1234XXXXXXXXXXX (USER ASSIGNED NAME AS SPE CIFICED. TYPICALLY CATA LOG NUMBER. LOAD FACTORY PROF = YES OR NO LOG SERVICE EVENT = YES OR NO SOFTWARE UPDATE (EITHER THE UPDATE WILL BE SUC CESSFUL OR THE FOLLOW ING MESSAGES WILL AP PEAR. SW UPDATE FAILED OR SW UPDATE FILE NOT FOUND. CLEAR DELAYS = YES OR NO. RESET CONTROLLER = YES OR NO. CONTROLLER LOCKOUT = YES OR NO. WILL LOAD PREVIOUSLY SAVED USB PROFILE. NOTE: IF USB FLASH DRIVE IS NOT INSTALLED OR THE M3 UNIT CONTROLLER CANNOT READ THE FLASH MEDIA, A MESSAGE WILL APPEAR NOT APPLICABLE EQUIPMENT NOT PRESENT. NOTE: THIS REBOOTS THE M3 CONTROLLER. NO CONFIGURA TION SETTINGS ARE CHANGED. NOTE: PARAMETERS AVAILABLE ARE DEPENDENT ON MODEL NUMBER AND CONFIGURATION ID 1 AND 2 SETTINGS. Page 17

86 Table 7. Menu Interface (Level 1 - SETTINGS) Note: Available menu options are dependent on hardware configuration. Level 2 Level 3 Level 4 Level 5 Level 6 Level 7 WIRED THERMOSTAT BACNET MAC ADDRESS = X BACNET BAUD RATE = 9.6, 19.2, 38.4 OR 76.8 K CONTROL CONTROL TYPE = NETWORK OR WIRED THERMOSTAT NETWORK > BACNET NETWORK > L-CONNECTION CONTROL MODE = ROOM SENSOR OR NETWORK THERMOSTAT CONTROL MODE = MONITOR CONTROL MODE = ROOM SENSOR OR NETWORK THERMOSTAT LCONN ADDRESS = X CONTROL MODE = MONITOR CONTROL MODE = ROOM SENSOR OR NETWORK THERMOSTAT NETWORK SENSOR C02 = YES OR NO NETWORK SENSOR RELATIVE HUMIDITY = YES OR NO NETWORK SENSOR TEMPERATURE = YES OR NO ROOM SENSOR OCC BLOWER MODE = AUTO - CYCLES OR ON - CONTINUOUS 1, 2, 3 BACKUP MODE = NONE, ROOM SENSOR, RETURN AIR BACKUP OR THERMOSTAT RAT OR ROOM BACKUP SETPOINTS OCCUPIED HEAT = XX.X F BACKUP SETPOINTS UNOCCUPIED HEAT = XX.X F BACKUP SETPOINTS OCCUPIED COOL = XX.X F BACKUP SETPOINTS UNOCCUPIED COOL = XX.X F NETWORK SENSOR C02 = YES OR NO NETWORK SENSOR RELATIVE HUMIDITY = YES OR NO NETWORK SENSOR TEMPERATURE = YES OR NO ROOM SENSOR OCC BLOWER MODE=ON-CON TINUOUS 1, 2, 3 OR AUTO CYCLES BACKUP MODE = NONE, ROOM SENSOR, RETURN AIR BACKUP OR THERMOSTAT RAT OR ROOM BACKUP SETPOINTS OCCUPIED HEAT = XX.X F BACKUP SETPOINTS UNOCCUPIED HEAT = XX.X F BACKUP SETPOINTS OCCUPIED COOL = XX.X F BACKUP SETPOINTS UNOCCUPIED COOL = XX.X F Page 18

87 Table 7. Menu Interface (Level 1 - SETTINGS) Note: Available menu options are dependent on hardware configuration. Level 2 Level 3 Level 4 Level 5 Level 6 Level 7 CONTROL MODE = MONITOR NETWORK SENSOR C02 = YES OR NO CONTROL CONTROL TYPE = NETWORK OR WIRED THERMOSTAT NETWORK > LONTALK CONTROL MODE = ROOM SENSOR OR NETWORK THERMOSTAT NETWORK SENSOR RELATIVE HUMIDITY = YES OR NO NETWORK SENSOR TEMPERATURE = YES OR NO ROOM SENSOR OCC BLOWER MODE=ON-CON TINUOUS 1, 2, 3 OR AUTO CYCLES BACKUP MODE = NONE, ROOM SENSOR, RETURN AIR BACKUP OR THERMOSTAT RAT OR ROOM BACKUP SETPOINTS OCCUPIED HEAT = XX.X F BACKUP SETPOINTS UNOCCUPIED HEAT = XX.X F BACKUP SETPOINTS OCCUPIED COOL = XX.X F BACKUP SETPOINTS UNOCCUPIED COOL = XX.X F NOTE: PARAMETERS AVAILABLE ARE DEPENDENT ON MODEL NUMBER AND CONFIGURATION ID 1 AND 2 SETTINGS. Table 8. Menu Interface (Level 1 - SETTINGS) Note: Available menu options are dependent on hardware configuration. USE THE ADJUST AND SET VALUES AR Level 2 Level 3 Level 4 Level 5 ROWS TO SCROLL UP OR DOWN FOR SE LECTION OPTIONS. RTU OPTION BLOWER SPEEDS BLOWER HEAT = XXXX CFM BLOWER COOLING HIGH = XXXX CFM BLOWER COOLING LOW = XXXX CFM BLOWER VENTILATION = XXXX CFM ON (TARGET XXXX CFM) ADJUST BLOWER RPM - XXXX RPM A BOX (NON-EP) - HEATING, HIGH SPEED AND LOW SPEED ADVANCED AIRFLOW A BOX AND B BOX OR BIGGER HEATING, COOLING HIGH, COOLING MED, COOLING MED HIGH, COOLING MED LOW, COOLOW LOW AND VENTILATION HIGH SPEED = % LOW SPEED = % ADJUST BLOWER % = XX% BLOWER CALIBRATION (HEATING, HIGH SPEED, LOW SPEED OR VENTILATION = CALIBRA TION DONE OR TURN BLOWER ON. IF TURN BLOWER ON IS SELECTED, BLOWER ON XXXXX > TURN BLOWER OFF= NO OR YES. VFD BYPASS VFD BYPASS DISENGAGED ENGAGE? = NO OR YES ECONOMIZER ENTHALPY OFFSET = X MA ECONOMIZER TEMP ECON TYPE = TEMPERATURE OFFSET OR TEMPERATURE SETPT ECONOMIZER OAT SETPOINT = XX.X F FREE COOLING SUPPLY AIR SETPOINT = XX F OUTDOOR AIRFLOW = XXX CFM ADV AIRFLOW ALARMS LO SPLY AIRFLOW ALM = XX% ADVANCED AIRFLOW ALARMS = ENABLED OR DISABLED (ONLY VISIBLE IF CONFIGURATION ID 1, POSITION 2 IS SET CORRECTLY). ADV AIRFLOW ALARMS LO OD AIRFLOW ALM = XX% ADV AIRFLOW ALARMS HI OD AIFLOW ALM = XX% ADV AIRFLOW ALARMS ALM TRIGGER PERIOD = XXXX SEC Page 19

88 Table 8. Menu Interface (Level 1 - SETTINGS) Note: Available menu options are dependent on hardware configuration. Level 2 INSTALL Level 3 DAMPER DEHUMIDIFIER EDIT PARAMETER NEW UNIT SETUP INSTALL NEW M3 Level 4 Level 5 USE THE ADJUST AND SET VALUES AR ROWS TO SCROLL UP OR DOWN FOR SE LECTION OPTIONS. MIN DAMPER POSITION BLOWER ON HIGH = X.X % MIN DAMPER POSITION BLOWER ON LOW = X.X % DEMAND CONTROL VENTILATION VENTILATION OPTIONS BUILDING PRESSURE CONTROL DEMAND CONTROL VENT DAMPER START OPEN = XXXX.X PPM DEMAND CONTROL VENT DAMPER FULL OPEN = XXXX.X PPM DEMAND CONTROL VENT > DAMPER MAX OA IF DCV CFM = X CFM (ONLY VISIBLE IF CONFIGURATION ID 1, POS ITION 2 IS SET CORRECTLY). DEMAND CONTROL VENT DAMPER MAX OPENING = XXX.X% BUILDING PRESS CTRL > PRESSURE SET IF BPC POINT = X.X IN H20 OUTDOOR AIR CONTROL (ONLY VISISBLE IF CONFIGURATION ID 1, POSITION 8 IS SET COR VELOCITY SETPOINT = XXX FT/MIN RECTLY) POWER EXHAUST ON BY ECON TRAVEL = XX.X % FRESH AIR HEATING ENABLE FAH = YES OR FRESH AIR HEATING FAH SETPOINT = XX F NO FRESH AIR COOLING ENABLE AFC = YES OR FRESH AIR COOLING AFC SETPOINT = XX F NO SENSOR TYPE=LOCAL SENSOR. NETWORK SENSOR, REHEAT DI4 OR NONE = NONE OR REHEAT DI4 = LOCAL SENSOR OR NETWORK SENSOR DEHUMIDIFIER DEHUMID SETPOINT = XX.X % DEHUMIDIFIER DEHUMID DEADBAND = X.X % ENTER DATA ID=XXX LANGUAGE = ENGLISH, ESPANOL, OR FRANCAIS. DATE/TIME = DAY, MONTH, YEAR, HOURS, MINUTES, SECONDS DISPLAY UNITS F/C (FAHRENHEIT / CELSIUS) MODEL NUMBER = LOCATED ON UNIT NAMEPLATE. CONFIGURATION ID 1 = WHITE STICKER TITLED ORIGINAL FACTORY UNIT CONFIGURATION LOCATED ON THE RIGHT SIDE OF THE CONTROL BOX NEAR THE M3 CONTROLLER. CONFIGURATION ID 2 = WHITE STICKER TITLED ORIGINAL FACTORY UNIT CONFIGURATION LOCATED ON THE RIGHT SIDE OF THE CONTROL BOX NEAR THE M3 CONTROLLER. CATALOG NUMBER = LOCATED ON UNIT NAMEPLATE. SERIAL NUMBER = LOCATED ON UNIT NAMEPLATE. RTU DESCRIPTION = (18 CHARACTER POSITION) = NONE OR REHEAT DI4 DEHUMIDIFIER SENSOR TYPE = LOCAL SENSOR OR NETWORK SENSOR DEHUMIDIFIER DEHUMID SETPOINT = XX.X % DEHUMIDIFIER DEHUMID DEADBAND = X.X % CLEAR ALL CONFIG=YES OR NO. IF YES IS SELECTED. ARE YOU SURE?=YES OR NO. Page 20

89 Table 8. Menu Interface (Level 1 - SETTINGS) Note: Available menu options are dependent on hardware configuration. Level 2 Level 3 Level 4 Level 5 USE THE ADJUST AND SET VALUES AR ROWS TO SCROLL UP OR DOWN FOR SE LECTION OPTIONS. LANGUAGE = ENGLISH, FRANCAIS OR ESPANOL DAY, MONTH, YEAR HOURS, MINUTES AND SECONDS DATE/TIME NOTE: HOURS IN 24 HOUR CLOCK FORMAT (MILITARY) DISPLAY UNITS F/C = FAHRENHEIT OR CELSIUS RTU DESCRIPTION ENTER A 18 POSITION ALPHA / NUMERIC NAME CATALOG NUMBER = LOCATED ON UNIT NAMEPLATE. GENERAL MODEL NUMBER = LOCATED ON UNIT NAMEPLATE. SERIAL NUMBER = LOCATED ON UNIT NAMEPLATE. CONFIGURATION ID 1 = WHITE STICKER TITLED ORIGINAL FACTORY UNIT CONFIGURATION LOCATED ON THE CONFIGURATION ID RIGHT SIDE OF THE CONTROL BOX NEAR THE M3 CONTROLLER. 2 NOTE: PARAMETERS AVAILABLE ARE DEPENDENT ON MODEL NUMBER AND CONFIGURATION ID 1 AND 2 SETTINGS. IN ORDER FOR ANY CHANGE TO THE SYSTEM TO TAKE AFFECT, BACK COMPLETELY OUT OF THE CURRENT LOCATION TO THE MAIN MENU OR STATUS SCREEN. Page 21

90 Blower Operation with Effective Occupancy This section describes how network occupancy signals are combined to produce effective occupancy. The blower runs to service heat and cool demands, regardless of the space occupancy. However when there is no heating or cooling demand there are options for how the blower should operate in conjunction with occupancy signals to keep the space ventilated, or the air stirred. 1. California Energy Commission Title 24 The legacy option settings for OCC Blower Mode are AUTO CYCLES or ON-CONTINUOUS 1. These settings govern whether the blower runs continuously when the space is considered occupied, or cycles on/off with the heating and cooling demand. To comply with the California Energy Commission Title 24 standard there are two additional values for OCC Blower Mode which are ON-CONTINUOUS 2 and ON-CONTINUOUS 3. See table 9 for their descriptions. Table 9. Blower Operation Description OCC Blower Mode AUTO CYCLES ON- CONTINUOUS 1 ON- CONTINUOUS 2 ON- CONTINUOUS 3 Manual Schedule Sensor Effective Occupancy Description Blower cycles on/off with demand. (Legacy usage.) Blower runs when either the occupancy sensor or schedule, or both, indicates occupied. (Legacy usage.) Blower runs when both the occupancy sensor and schedule indicate occupied. The same as option 2, but blower runs for 30 minutes and is off for 90 minutes when schedule is occupied but the occupancy sensor is not occupied. A. LonTalk, BACnet and L Connection: These two new options are available when using these networks types that supplies a room occupancy signal (in addition to the scheduled occupancy). NOTE: For L Connection the same two options are also available when using an optional room occupancy sensor. If a room occupancy sensor is not physically installed and configured for the network, then the only options available for OCC Blower Mode are AUTO CYCLES or ON-CONTINUOUS 1. B. RTU Standalone: Since a room occupancy sensor cannot be used in this configuration, then the only options for OCC Blower Mode are AUTO CYCLES or ON-CONTINUOUS Enabling Network Type To enable the network module, go to SETUP > INSTALL and run the setup wizard. When Configuration ID 1 appears on the screen, configure position 5 to one of the applicable network types. N = Not Installed, B = BACnet and L = LonTalk. 3. Menu Setup Procedure Method for OCC Blower Mode These blower control options are handled by the OCC Blower Mode. These setting and be changed using the following menu path: Go to SETUP > NETWORK INTEGRATION > NETWORK = BACNET, LONTALK or L CONNECTION > (additional prompts concerning network configuration and sensor types will be asked) CONTROL MODE = ROOM SENSOR > ROOM SENSOR OCC BLOWER MODE = (see table 9) Table 10. BACnet Occupancy Points BACnet Value 0: space occupied Occupancy Override Control 1: space unoccupied AO 103 2: refresh space occupied override timer 3 255: auto; clear timer and return to scheduler Occupancy Scheduler Control 0: space occupied AO : space unoccupied 0: space occupied Occupancy Sensor Input 1: space unoccupied AO : auto; return to occupancy scheduler state 0: space occupied Effective Occupancy 1: space unoccupied AI 241 2: space occupied (timed override) Page 22

91 Table 11. LonTalk Occupancy Points Mode LonTalk Value 0: space occupied Manual Schedule Sensor Effective Occupancy nvioccmancmd Index = 11 nvioccsched1 Index = 10 nvioccsensor Index = 12 nvoeffectoccup Index = 26 1: space unoccupied 2: refresh space occupied override timer 3 255: auto; clear timer and return to scheduler 0: space occupied 1 255: space unoccupied 0: space occupied 1: space unoccupied 2 255: auto; return to occupancy scheduler state 0: space occupied 1: space unoccupied 2: space occupied (timed override) Blower Operation Table 12. Blower Operation Modes Description On Cycles Blower runs continuously. Blower cycles on/off with demand. Cycles w/stir Blower cycles on/off with demand; during off cycle blower is on 30 minutes of 120. Table 13. Blower Operation Schedule Manual Schedule Sensor Effective Occupancy OCC Blower Mode AUTO-CYCLES ON-CONTINOUS 1 0, 2 n/a n/a OCCUPIED ON-CONTINOUS 2 ON-CONTINOUS 3 AUTO-CYCLES ON-CONTINOUS 1 1 n/a n/a UNOCCUPIED ON-CONTINOUS 2 ON-CONTINOUS 3 AUTO-CYCLES ON-CONTINOUS , OCCUPIED ON-CONTINOUS 2 ON-CONTINOUS 3 AUTO-CYCLES ON-CONTINOUS OCCUPIED ON-CONTINOUS 2 ON-CONTINOUS 3 AUTO-CYCLES ON-CONTINOUS n/a UNOCCUPIED ON-CONTINOUS 2 ON-CONTINOUS 3 Blower Operation Cycles On On On Cycles Cycles Cycles Cycles Cycles On On On Cycles On Cycles Cycles w/stir Cycles Cycles Cycles Cycles Page 23

92 Economizer The economizer, when configured, controls: Damper position, which determines how much outdoor air is used to meet free cooling or indoor air quality requirements, and Optional power exhaust fans. On a cooling demand, outdoor air is used for free cooling instead of first-stage compressor(s) when outdoor air is suitable. Enabling Economizer and Settings To enable the economizer if installed go to SETUP > INSTALL and go through the wizard. When reaching Configuration ID 1, position 2 will need to be set to the applicable type of economizer. Valid types are as indicated below: M = Motorized Outdoor Air Damper Only T = Economizer - Temperature (Note: Used for both set point and offset temperature control.) G = Economizer - Global S = Economizer - Single Enthalpy D = Economizer - Dual Enthalpy The following options are available depending on economizer set above. These settings are available through the main menu at SETUP > TEST & BALANCE > DAMPER. Table 14. Menu Interface (Level 1 - SETTINGS) - M (Motorized Outdoor Air Damper Only) USE THE ADJUST AND SET VALUES AR Level 2 Level 3 Level 4 Level 5 ROWS TO SCROLL UP OR DOWN FOR SE LECTION OPTIONS. RTU OPTION DAMPER MIN DAMPER POSITION BLOWER ON HIGH = X.X % MIN DAMPER POSITION BLOWER ON LOW = X.X % DEMAND CONTROL VENT DAMPER START OPEN = XXXX.X PPM DEMAND CONTROL VENT DAMPER FULL OPEN = XXXX.X PPM DEMAND CONTROL VENT DAMPER MAX OPENING = XXX.X% FRESH AIR HEATING ENABLE FAH = YES OR FRESH AIR HEATING FAH SETPOINT = XX F NO FRESH AIR COOLING ENABLE AFC = YES OR FRESH AIR COOLING AFC SETPOINT = XX F NO Table 15. Menu Interface (Level 1 - SETTINGS) - T (Temperature Economizer) USE THE ADJUST AND SET VALUES AR Level 2 Level 3 Level 4 Level 5 ROWS TO SCROLL UP OR DOWN FOR SE LECTION OPTIONS. RTU OPTION DAMPER ECONOMIZER TEMP ECON TYPE = TEMPERATURE OFFSET OR TEMPERATURE SETPT ECONOMIZER OAT SETPOINT = XX.X F FREE COOLING SUPPLY AIR SETPOINT = XX F MIN DAMPER POSITION BLOWER ON HIGH = X.X % MIN DAMPER POSITION BLOWER ON LOW = X.X % DEMAND CONTROL VENT DAMPER START OPEN = XXXX.X PPM DEMAND CONTROL VENT DAMPER FULL OPEN = XXXX.X PPM DEMAND CONTROL VENT DAMPER MAX OPENING = XXX.X% FRESH AIR HEATING ENABLE FAH = YES OR FRESH AIR HEATING FAH SETPOINT = XX F NO FRESH AIR COOLING ENABLE AFC = YES OR FRESH AIR COOLING AFC SETPOINT = XX F NO Page 24

93 Table 16. Menu Interface (Level 1 - SETTINGS) - G (Global Economizer) Level 2 Level 3 Level 4 Level 5 RTU OPTION DAMPER Damper Operation During Free Cooling These are operating profile options for the economizer damper (Parameter ECONOMIZER PROFILE) during free cooling when any compressor is on and can be selected as follows: Option 0: Damper continues to modulate while compressors are on, but the effect of mechanical cooling may force the damper closed to its minimum position. After compressor starts, the free cooling set point is lowered to fixed temperature setting of 45 F. Option 1: Damper opens to its max open position (Parameter FREE CL MAX DAMPER) when any compressors start. NOTE - When using Option 1 and after the compressor is stopped, the M3 shall resume damper modulation. Option 2: Is as follows: USE THE ADJUST AND SET VALUES AR ROWS TO SCROLL UP OR DOWN FOR SE LECTION OPTIONS. FREE COOLING SUPPLY AIR SETPOINT = XX F MIN DAMPER POSITION BLOWER ON HIGH = X.X % MIN DAMPER POSITION BLOWER ON LOW = X.X % DEMAND CONTROL VENT DAMPER START OPEN = XXXX.X PPM DEMAND CONTROL VENT DAMPER FULL OPEN = XXXX.X PPM DEMAND CONTROL VENT DAMPER MAX OPENING = XXX.X% FRESH AIR HEATING ENABLE FAH = YES OR FRESH AIR HEATING FAH SETPOINT = XX F NO FRESH AIR COOLING ENABLE AFC = YES OR FRESH AIR COOLING AFC SETPOINT = XX F NO Holds off compressor on Y2 call until damper has modulated to maximum position (Parameter FREE CL MAX DAMPER) for three minutes. After three minutes, the compressor starts and the free cooling set point is lowered to 45 F. Damper is not locked at maximum open while compressor is on, but modulates to maintain 45 F discharge air temperature. When Y2 is satisfied, compressor goes off and free cooling set point is restored to 55 F (Parameter FREE COOL SUPPLY SP). Option 3: Same as Option 2, but with a 10 minute delay instead of a three minute delay. Free Cooling Compressor Lockout Mode and Low Ambient Set Point Go to SETTINGS > RTU OPTION > EDIT PARAMETER = 285 (FRCL COMP LCKOUT MD). Default value is 2. Range is 0 to 2. 0 = Disable Compressor Lockout 1 = Lockout Compressor if outdoor air is suitable regardless of outdoor air temperature. 2 = Lockout Compressor if outdoor air temperature is below Parameter 108 setting and Outdoor Air is Suitable (Default). Go to SETTINGS > RTU OPTION > EDIT PARAMETER = 108 (FREE LO AMB LCKT SP). Default value is 55.0 F. Range is 45.0 to 80.0 F. Outdoor Air Suitable for Free Cooling The M3 unit controller displays the outdoor air suitability information on the status screen. The appropriate sensors are provided when the economizer is factory-configured. When the economizer is field-installed and configured, the single or dual enthalpy modes require additional field-provided sensor(s). Enthalpy Set Point This setting pertains to the single enthalpy free cooling mode only. The M3 unit controller will enable free cooling when outdoor air enthalpy (A7) is less than the enthalpy set point (Parameter ECON FREECL ENTH SP). Figure 6 shows the approximate enthalpy sensor output at various temperatures and percentage of relative humidity. Page 25

94 F 50 F 60 F 70 F 80 F 90 F 100 F Figure 6. Enthalpy Sensor Output Current Honeywell C7400 Table 17. Menu Interface (Level 1 - SETTINGS) - Single Enthalpy The following settings are available when Configuration ID 1, position 2 is set to S (Single Enthalpy) Level 2 Level 3 Level 4 RTU OPTION DAMPER ECONOMIZER ENTHALPY SETPOINT = XX.X MA FREE COOLING SUPPLY AIR SETPOINT = XX.X F USE THE ADJUST AND SET VALUES ARROWS TO SCROLL UP OR DOWN FOR SELECTION OPTIONS. ENTHALPY SET POINT MA SETTING 73 F F F F 17.6 CLIMATE ZONE SINGLE SENSIBLE 1, 3, 5, F 2, 4, F 6, 8, F F MIN DAMPER POSITION BLOWER ON HIGH = X.X % MIN DAMPER POSITION BLOWER ON LOW = X.X % DEMAND CONTROL VENT DAMPER START OPEN = XXXX.X PPM DEMAND CONTROL VENT DAMPER FULL OPEN = XXXX.X PPM DEMAND CONTROL VENT DAMPER MAX OPENING = XXX.X% FRESH AIR HEATING ENABLE FAH = YES OR FRESH AIR HEATING FAH SETPOINT = XX F NO FRESH AIR COOLING ENABLE AFC = YES OR FRESH AIR COOLING AFC SETPOINT = XX F NO Page 26

95 Table 18. Menu Interface (Level 1 - SETTINGS) - Dual Enthalpy The following settings are available when Configuration ID 1, position 2 is set to D (Dual Enthalpy) Level 2 Level 3 Level 4 RTU OPTION DAMPER ECONOMIZER ENTHALPY OFFSET = X.XX MA FREE COOLING SUPPLY AIR SETPOINT = XX F Free Cooling Damper Maximum Position Damper Maximum position for free cooling is by default set to 100%. To modify this settings, use the following path: SETTINGS > RTU OPTION > EDIT PARAMETER (FREE CL MAX DAMPER) Minimum Damper Position Use the following menu path to modified the minimum damper positions for both high and low operations. SETUP > TEST & BALANCE > DAMPER > MIN DAMPER POSITION BLOWER ON HIGH =.% SETUP > TEST & BALANCE > DAMPER > MIN DAMPER POSITION BLOWER ON LOW =.% Motorized Outdoor Air Damper Set damper position according to Minimum Damper Position section for normal operation, make sure the motorized outdoor air damper is set correctly in Configuration ID 1, position 2 needs to be set to M. The damper will open to the specified position during the occupied time period and close during the unoccupied time period. NOTE - When equipped with Motorized Outdoor damper Air Damper, Prodigy 2.0 provides only Demand Control Ventilation. Free Cooling/Economizer function is not available. USE THE ADJUST AND SET VALUES ARROWS TO SCROLL UP OR DOWN FOR SELECTION OPTIONS. TEMP OFFSET* RELATIVE HUMIDITY F OFFSET %** MA SETTING * AT A CONSTANT RELATIVE HUMIDITY. ** AT A CONSTANT TEMPERATURE CLIMATE ZONE SINGLE SENSIBLE 1, 3, 5, F 2, 4, F 6, 8, 9 71 F 7 69 F MIN DAMPER POSITION BLOWER ON HIGH = X.X % MIN DAMPER POSITION BLOWER ON LOW = X.X % DEMAND CONTROL VENT DAMPER START OPEN = XXXX.X PPM DEMAND CONTROL VENT DAMPER FULL OPEN = XXXX.X PPM DEMAND CONTROL VENT DAMPER MAX OPENING = XXX.X% FRESH AIR HEATING ENABLE FAH = YES OR FRESH AIR HEATING FAH SETPOINT = XX F NO FRESH AIR COOLING ENABLE AFC = YES OR FRESH AIR COOLING AFC SETPOINT = XX F NO Economizer Checkout The following checkout procedures are completed with unit energized. Confirm proper operation of the heartbeat LED. Step 1 will determine whether the economizer is allowing full damper travel. Use step 2 when the damper does not respond to step 1. Steps 3, 4, 5, and 6 checkout the operating modes; checkout only the mode that applies to the unit being worked on. CAUTION Power exhaust fans will be functional. To prevent operation of power exhaust fans, disconnect power to unit and then PED jack/plug P/J18.: Step 1. ECONOMIZER OUTPUT VOLTAGE The M3 unit controller monitors P262 (DPOS) and operates as reference in Section Damper Diagnostics in the Prodigy 2.0 (M3 unit controller) Application Guide (Advance Features). A Go to SERVICE > TEST > DAMPER>POSITION > DAMPER POSITION ACTUAL: 0.0% The motor will slowly modulate to the closed position. B Change DAMPER POSITION ACTUAL to 100.0%.The motor will slowly modulate to the fully opened position. Page 27

96 C If the motor does not respond, go to step 2. If the motor does respond properly, go to the appropriate mode of operation checkout. Step 2. OUTPUT VOLTAGE CHECK A Go to SERVICE > TEST > DAMPER > POSITION > DAMPER POSITION ACTUAL: 0.0% B Adjust the DAMPER POSITION ACTUAL: to 0.0% position. C Measure the voltage on P262 between pin 3 (VOT damper control) and pin 2 (GND) using pin 1 as common. Voltage should read approximately 2 VDC. D Adjust the DAMPER POSITION ACTUAL: to 100.0% position. NOTE - Allow approximately 90 seconds for actuator to react. E Measure the voltage between P262 between pin 3 (VOT damper control) and pin 2 (GND) using pin 1 as common. Voltage should read approximately 10 volts DC. If not, check wiring and trouble shoot system. Step 3. SINGLE ENTHALPY OPERATION (ODE) In the single enthalpy mode, dampers open for free cooling when the outdoor enthalpy is less than the enthalpy set point (Parameter ECON FREECL ENTH SP); dampers will try to modulate discharge air temperature (RT6) to (Parameter FREE COOL SUPPLY SP) which has a default setting of 55.0 F (13 C). A B C Go to SETUP > INSTALL > press SAVE until you get to the Configuration ID 1, position 2 needs to be set to S for Economizer Single Enthalpy and press SAVE. To simulate low outdoor enthalpy. Disconnect A7 outdoor enthalpy sensor jack/plugs J/P104. Connect a 750 ohm resistor across plug J104-1 and J J104 is located in the filter access area. Check all connections and wiring between J104 and the control. Step 4. DUAL ENTHALPY MODE OF OPERATION In dual enthalpy mode mode, dampers open for free cooling when the outdoor air enthalpy is lower than the return air enthalpy by difference value of (Parameter ECN FRCL ENTH OFFST); dampers will modulate discharge air temperature (RT6) to (Parameter FREE COOL SUPPLY SP) which has a default setting of 55.0 F (13 C). A B Go to SETUP > INSTALL > press SAVE until you get to the Configuration ID 1 position 2 needs to be set to D for Economizer Dual Enthalpy and press SAVE if performing an economizer field-install. Use two resistors to simulate outdoor air enthalpy suitable. Disconnect A62 return air enthalpy sensor jack/plug J/P105. Place a 1500 ohm resistor between J105-1 and J J/P105 is located in the filter access area. Disconnect A7 outdoor enthalpy sensor jack/plugs J/P104. Connect a 750 ohm resistor across J104-1 and J Step 5. ALL TEMPERATURE MODES OF OPERATION In the Economizer Temperature mode, the damper opens for free cooling when the outdoor air temperature is: Less than return air temperature by at least a difference of (Parameter ECON FRCL TMP OFFST) if Temperature Offset mode is selected Less than (Parameter ECON FREECL TEMP SP) In all modes, dampers will try to modulate discharge air temperature (RT6) to (Parameter FREE COOL SUPPLY SP) which has a default setting of 55.0 F (13 C). Refer to the Displaying Sensor Inputs" section to read return air (RT16) and outdoor air (RT17) temperatures. If outdoor air is not cooler than return air, simulate a colder outdoor air temperature with a resistor. Select a resistor value that corresponds to a temperature (see table 19): A B C Temp. F ( C) 30 (-1) 40 ( 4) Locate RT17 sensor in unit. Disconnect 1/4" quick connect terminals on wires leading from sensor. Jumper RT17 wires leading back to control with the appropriate resistor. Check all connections and wiring between RT17 and the M3 unit controller, and between RT16 and the M3 unit controller. Table 19. TMP Mode Resistor Values Size Resist or 34, ,10 6 Temp. F ( C) 50 (10) 60 (16) Size Resist or 19, ,31 3 Temp. F ( C) 70 (21) 80 (27) Size Resist or 11,88 4 Temp. F ( C) 90 (32) 9, (38) Size Resist or 7,332 5,826 Step 6. GLOBAL MODULATING (GLO) MODE OF OPERATION In the GLO (modulating) mode, dampers modulate open for free cooling when the global input is energized; dampers will try to modulate discharge air temperature (RT6) to (Parameter FREE COOL SUPPLY SP) which has a default setting of 55.0 F (13 C). NOTE - The global input turns on the blower. A Set global mode using the Configuration ID 1, position 2, and set to character G. B C D Connect a jumper between A55_P297-1 (24VAC) and A55_P297-9 (global). The blower will be energized and the damper will slowly open if discharge air temperature (RT6) is greater than (Parameter FREE COOL SUPPLY SP) which has a default setting of 55.0 F (13 C). Disconnect 24VAC to A55_P The blower will turn off and the damper will close. If the damper does not actuate check all connections and wiring between P262A and B. Page 28

97 DISCONNECT J/P104 DISCONNECT J/P105 Damper Travel: % of Maximum Open PLACE JUMPER WIRE HERE - READ CURRENT HERE DC AMMETER + Measure A7 Current in Series PLACE JUMPER WIRE HERE - READ CURRENT HERE DC AMMETER + Measure A62 Current in Series Figure 7. Measure A7 and A62 Current in Series Step 7. ENTHALPY SENSOR OPERATION (A7 and A62) A Connect a direct current ammeter as shown in figure 7 to measure current output of A7 or A62. NOTE - If Enthalpy Sensors are configured, current sensor reading by M3 controller can be verified on User interface: B The reading will be between 4 and 20 ma. depending on outdoor temperature and humidity. Refer to figure 6 to approximate reading. Go to DATA > IN/OUTPUTS > SENSORS > LOCAL (scroll down to IE: x.x ma and OE: x.x ma) C If the meter reads zero, check sensor wiring harness for continuity and/or check polarity of sensor wiring. Demand Control Ventilation A field-provided and installed indoor air quality (IAQ) sensor can be used with the modulating economizer or OADM to control carbon dioxide levels in the conditioned space. The carbon dioxide level in a space is an indicator of the number of people occupying a room. As the carbon dioxide level rises (indicating the occupancy of a room has increased), dampers modulate open - regardless of outdoor air suitability. Likewise, as the carbon dioxide level falls (indicating the occupancy has decreased), dampers modulate further closed. Standard economizer installations have a minimum fresh air ventilation requirement based on maximum room occupancy. With standard economizer use, the amount of air required for maximum room occupancy is heated or cooled with each heating or cooling cycle. IAQ installations use the maximum amount of required ventilation air only with maximum room occupancy; less outdoor air needs to be heated or cooled when fewer people are in the conditioned space. If the economizer is operating in the free cooling mode and the indoor air quality control requires the damper to open further, the indoor air quality demand will override the free cooling demand. The IAQ function is not energized during the unoccupied or night time period. NOTE - The IAQ sensor may also be used with systems containing a motorized outdoor air damper. Default Operation The M3 unit controller has a 0-10VDC indoor air quality input for a standard ppm carbon dioxide sensor. The economizer starts opening at a carbon dioxide level of 500 ppm (default) (start open set point) and reaches full open at a carbon dioxide level of 1000ppm (default) (full open set point). The damper opens to a default position of 100% (see Parameter 117). Determine damper travel position using the following formula. % Damper Travel = carbon dioxide ppm - Start Open ppm 5 Example: At a carbon dioxide level of 750ppm, the damper will be approximately 50% open: % Damper Travel = = 50% 5 Use the menu interface to read carbon dioxide ppm. DATA > IN/OUTPUTS > SENSORS > C02. Figure 8 shows default or proportional operation. Maximum and Minimum Demand Control Ventilation Damper Settings Maximum position is set using the following menu path: Go to SETUP > TEST & BALANCE > DAMPER > DAMPER MAX OPENING =.% Use the following menu path to modified the minimum damper positions for both high and low blower operations. Go to SETUP > TEST & BALANCE > DAMPER > MIN DAMPER POSITION BLOWER ON HIGH =.% Go to SETUP > TEST & BALANCE > DAMPER > MIN DAMPER POSITION BLOWER ON LOW =.% Page 29

98 Damper Travel: % of Maximum Open (Parameter Min. Position Low Temp. Operation 40 F Parameter F 20 F High Temp. Operation 75 F Parameter F 95 F Parameter 118 CO 2 (ppm) 10 F Parameter Parameter F Parameter 120 Figure 8. Default Demand Control Ventilation (DCV) Operation Parameter Adjustments Default indoor air quality economizer operation is based on common or average applications. Adjustments may be made to the indoor air quality parameters to alter operation or meet required specifications. Use the user interface to change Parameter 117 through 119. Go to SETTINGS > RTU OPTIONS > EDIT PARAMETER Select a demand control ventilation mode with Parameter 134. Modes 3 and 4 will bring on the unit blower when demand control ventilation calls for maximum damper open, and returns to auto-blower when demand control ventilation damper returns to 0. The other modes only operate when the unit blower is on, but will not bring it on themselves. Some applications require a different carbon dioxide set point range than default settings. Damper start open" (Parameter No 118 and full open" (Parameter 119) carbon dioxide set points may be adjusted from 0 to 2000 ppm. Use the following formula to determine damper travel. NOTE - When changing carbon dioxide set point range, start open" set point should be less than full open" set point. % Damper Travel = carbon dioxide ppm - Start Open ppm X Max Open (Parameter 117) Full Open - Start Open Full Open - Start Open Example: An application requires the dampers open at 800 CO 2 ppm and reach full open at If the carbon dioxide level in the space reads 1000 ppm, calculate the damper percent open as follows. % Damper Travel = or 200 or.5 = 0.5 x 100 = 50% Table 20. Demand Control Ventilation Parameters Control Parameter Control Value Screen Name 117 DCV MAX DAMPER OPEN Parameter Short Description Min. Default Max. Units Demand Control Ventilation Maximum % Damper Open Description Maximum allowed demand control ventilation damper open position. 118 DCV DAMP START OPEN Demand Control Ventilation Damper Start Open PPM Damper start open" CO 2 set point for Demand Control Ventilation. Level where fresh air damper begins to open. 119 DCV DAMP FULL OPEN Demand Control Ventilation Maximum Damper Full Open Set Point PPM Damper full open" CO 2 set point for Demand Control Ventilation. Level where fresh air damper is opened to maximum. 120 DCV HI TMP OV FL CL Demand Control Ventilation Outdoor Air Control Hi Temperature Override Full Closed F High outdoor air temp. where fresh air damper is closed to minimum position. 121 DCV HI TMP OV ST CL Demand Control Ventilation Outdoor Air Control Hi Temperature Override Start Closing F High outdoor air temperature where fresh air damper begins to close. Page 30

99 No Control Parameter Screen Name 122 DCV LO TMP OV FL CL 123 DCV LO TMP OV ST CL 134 IAQ INPUT MODE Set Point Control Option Table 20. Demand Control Ventilation Parameters Parameter Short Description Demand Control Ventilation Outdoor Air Control Low Temperature Override Full Closed Demand Control Ventilation Outdoor Air Control Low Temperature Override Start Closing Indoor Air Quality Input Mode Min. Set point control mode is commonly used in areas with high occupancy and frequent change out such as classrooms or conference rooms. In applications requiring this on/off damper response to carbon dioxide levels, set the start open (Parameter DCV DAMP START OPEN) set point higher than the full open (Parameter DCV DAMP FULL OPEN) set point. The dampers will drive to fully-open position immediately. Figure 9 shows the set point control option. Change Parameters 122 and 123 to set the minimum outdoor Control Value Default Max. Units F F Option Description Low outdoor air temperature where fresh air damper is closed to minimum position Low outdoor air temp. where fresh air damper begins to close. IAQ input source and mode (0-3 operate only when blower is on). 0- Demand Control Ventilation System Indoor Air Quality. Either P298-3 or network indoor air quality. 1- Demand Control Ventilation System Indoor Air Quality. Either P298-3 or network Indoor Air Quality with no outdoor air temperature limits. 2- Outdoor Air Control Sensor A24 (A133_P194-6) (TB22-6). 3- Outdoor Air Control Sensor A24 (A133_P194-6) (TB22-6) with no outdoor air temperature limits. 4- Demand Control Ventilation System Indoor Air Quality. Either P298-3 or network Indoor Air Quality with blower on/auto operation. 5- Demand Control Ventilation System Indoor Air Quality. Either P298-3 or network Indoor Air Quality with blower on/auto operation with no outdoor air temperature limits. 6-??? temperature limits. Change Parameters 120 and 121 to set the maximum temperature limits. IMPORTANT Mixed air temperatures less than 45 F (7 C) on units with an aluminized heat exchanger or less than 30 F (-1 C) on stainless steel heat exchangers will void the manufacturer's warranty. Determining Indoor Air Quality Inputs Go to DATA> IN/OUTPUTS > SENSORS menu selection from the M3 unit controller menu display. Page 31

100 100 Parameter 117 Max. Open Close Open Min. Position Parameter 119 (full) Parameter 118 (start) carbon dioxide (ppm) Figure 9. Set point Control Indoor Air Quality Option Page 32

101 Networking Serial Communications (RS-485) BACNET The configuration shown in figure 10 has terminations on the M3 unit controller BACnet modules at both ends and ONLY at both ends of the chain. The configuration shown to the in figure 10 has a termination at the controller/router on one end and a termination at the M3 unit controller BACnet module on the other end; terminations are ONLY at the ends of the chain. Cable type - twisted pair with shield, 22 awg minimum, Belden #88761 or #8761 (Lennox 27M19, 94L63, 68M35). (not terminated) CONTROLLER/ ROUTER (terminated) (not terminated) (not terminated) (not terminated) (not terminated) (terminated) CONTROLLER/ ROUTER (terminated per mfg (not terminated) instructions) Figure 10. Terminating ends of daisy-chained networks (not terminated) (terminated) L CONNECTION The network control panel is an L Connection direct digital controller used on units which are not equipped with an M3 unit controller. The Building Controller (BC) is used to control building functions such as lights and signs. Use L connection specific network cable and daisy chain as shown in figure 11. L Connection daisy chains also need termination at the end nodes of the chain. Cable type - twisted pair with shield, 22 awg minimum, Belden #88761 or #8761 (Lennox 27M19, 94L63, 68M35). SYS BUS TERMINAL BLOCK ON LENNOX CONTROLLERS IMC (M1-1 TO M1-6 L SERIES) - G + SYS BUS TERMINAL BLOCK ON LENNOX CONTROLLERS IMC (M1-7, M1-8, NTC, BC AND ZONE CONTROLLERS) S-BUS TERMINAL BLOCK ON LENNOX PRODIGY M2 OR M3 CONTROLLER ENERGENCE SERIES - S + - S + SHIELD SHIELD SHIELD CONTINUE WIRING TYP. TO LAST CONTROLLER ON NETWORK SHIELD CONNECT + TERMINAL OF NCP TO + TERMINALS ON ALL CONTROLLERS. CONNECT - TERMINAL OF NCP TO - TERMINALS ON ALL CONTROLLERS. DO NOT CONNECT THE CABLE SHIELD TO THE G TERMINAL ON M1-6 AND OLDER Figure 11. L Connection Network Daisy-Chain Communication Wiring Page 33

102 APPENDIX A55 M3 board. Main controller board for roof top units A178 C3 board. Compressor 3 and 4, 2 nd stage heat AI Analog input AO Analog output BL Blower BRPM Blower RPM C1 1st stage cooling C2 2nd stage cooling C3 3rd stage cooling C4 4th stage cooling CAI Combustion air inducer CAVB Constant air volume with bypass damper COM Electrical common CLK Clock CP1 Compressor 1 CP2 Compressor 2 CP3 Compressor 3 CP4 Compressor 4 CSP Cooling set point DAC Discharge (supply) air control DACC Discharge (supply) air control cooling DACH Discharge (supply) air control heating DAP Discharge (supply) air pressure DAT Discharge (supply) air temperature DB Deadband DCV Demand controlled ventilation DDC Direct Digital Controller DI Digital input Diff Differential DO Digital output ECON Economizer FAC Fresh air cooling control FAH Fresh air heating control FAT Fresh air tempering control. See FAC & FAH FC Free cooling G Thermostat demand, blower GLO Global mode or input (economizer) H1 1st stage heating H2 2nd stage heating H3 3rd stage heating H4 4th stage heating HP1 Heat pump add-on board (A61) HP High pressure HSP Heating setpoint HT Heating IAQ Indoor air quality. Often synonymous with CO 2 level in ppm IDE Indoor enthalpy. Depends on temperature and humidity IE Indoor enthalpy. Abbreviations w.c. LCONN LED Inches of water column L Connection Light emitting diode. An indicator light, found either as individual elements or grouped together as segments to form characters Low pressure Limit Main M3 unit controller board (A55). Modulating gas valve Motorized outdoor air damper Multi-Stage Air Volume Outdoor air control Outdoor air suitable for free cooling Outdoor air temperature Unit controller demand, occupied mode Outdoor enthalpy. Depends on temperature and humidity Outdoor enthalpy. Parts per million (mostly used for CO 2 measurements) Return air pressure Return air temperature Relative humidity Reset Roof top unit Discharge air temperature sensor Return air temperature sensor Outdoor air temperature sensor Smoke detection mode (alarm) Set point Stage Set point Terminal block Thermostat Unit controller demand, unoccupied mode Universal Serial Bus, connect to PC or flash drive LP LT M3 MGV MOAD MSAV OAC OAS OAT OCC ODE OE PPM RAP RAT RH RS RTU RT6 RT16 RT17 SMK SP Stg STPT TB TSTAT UNOCC USB W1 Thermostat demand, heat stage 1 W2 Thermostat demand, heat stage 2 W3 Thermostat demand, heat stage 3 W4 Thermostat demand, heat stage 4 VAC VAV VDC VFD VT Y1 Y2 Y3 Y4 ZAT Table 21. Parts and Kits Available for M3 Unit Controller Alternating current voltage Variable air volume. Accomplished with a variable frequency drive (VFD) Direct current voltage Var. frequency drive. An AC inverter used to vary motor speed Ventilation Thermostat demand, cooling stage one Thermostat demand, cooling stage two Thermostat demand, cooling stage three Thermostat demand, cooling stage four Room air temperature Description Catalog number Description Catalog number Description Catalog number Unit Controller Replacement kit 10X84 USB service kit tube 59W52 SmartWire Field Termination kit 59W57 LCD Display Replacement Kit 10X85 M3 unit controller battery (10-pack) 59W53 M3 unit controller cover 10X86 BACnet Replacement kit 59W51 Lennox Prodigy 2.0 USB Memory Stick (5-pack) 59W59 Page 34

103 USB Service Report Example (If SmartAirflow is Installed) ====================================================== USB SERVICE REPORT ====================================================== Service Date 04:03:2014 Service Time 19:26:35 Serial No. Software Version Hardware Version Unit Number UNIT 1 SBUS Address 2 BACnet Address 2 Catalogue Number Model Number LGH060H4EH1Y CONFIGURATION ID 1 NTNNNNLN CONFIGURATION ID 2 NNNNNNNNN Status IDLE ====================================================== Runtime Data Total Power On 23 HRS 8 CYCLES Before Install 0 HRS Filter 12 HRS Belt 11 HRS Blower 12 HRS 50 CYCLES Compressor 1 3 HRS 40 CYCLES Compressor 2 4 HRS 27 CYCLES Compressor 3 0 HRS 2 CYCLES Compressor 4 0 HRS 3 CYCLES Outdoor Fan 1 7 HRS 28 CYCLES Outdoor Fan 2 2 HRS 22 CYCLES Outdoor Fan 3 0 HRS 2 CYCLES Outdoor Fan 4 0 HRS 3 CYCLES Outdoor Fan 5 0 HRS 3 CYCLES Outdoor Fan 6 0 HRS 3 CYCLES POWER EXHAUST 0 HRS 0 CYCLES Heat Stage 1 0 HRS 1 CYCLES Heat Stage 2 0 HRS 1 CYCLES Humiditrol 0 HRS 0 CYCLES Free Cooling 0 HRS 4 CYCLES UV Lamp 0 HRS ====================================================== Sensor Data OAT 66 degf RAT 72 degf DAT 73 degf ZAT 78 degf RH 50 % CO2 460 ppm ====================================================== SmartAirFlow System Data Calibrated On 04/03/ :12:56 Supply Airflow Calibration Table PWM(%) Speed(rpm) Airflow(cfm) Supply Airflow Targets Mode Desired Airflow(cfm) PWM(%) Cool High Cool Low Heat Ventilation Smoke Economizer Differential Pressure(@ 2000 Supply Airflow(cfm)) Damper Position (%) Diff.Pressure(in.H20) Outside Airflow Targets Minimum Outside Air/Minimum DCV: 200 cfm Maximum DCV: 0 cfm Minimum CO2: 700 ppm Maximum CO2: 1200 ppm ====================================================== Alarm/Status Log (143) 04:03: :26:13 RESET DAMPER PRESSURE (141) 04:03: :26:13 RESET CFM TARGET TOO HIGH (143) 04:03: :06:19 SET DAMPER PRESSURE (141) 04:03: :06:19 SET CFM TARGET TOO HIGH ( 82) 04:03: :06:18 RESET CONTROLLER RESET ( 82) 04:03: :06:18 SET CONTROLLER RESET (143) 04:03: :59:41 SET DAMPER PRESSURE (141) 04:03: :59:41 SET CFM TARGET TOO HIGH ( 82) 04:03: :59:40 RESET CONTROLLER RESET ( 82) 04:03: :59:40 SET CONTROLLER RESET (143) 04:03: :35:19 SET DAMPER PRESSURE (141) 04:03: :35:19 SET CFM TARGET TOO HIGH (148) 04:03: :21:36 RESET SMART AIRFLOW CONFIG ERROR (170) 04:03: :21:36 RESET POWER EXHAUST UNCONFIGURED (165) 04:03: :21:36 RESET ECONOMIZER UNCONFIGURED ( 85) 04:03: :21:36 RESET INCORRECT HUMIDITROL SETTINGS (132) 04:03: :21:24 RESET VFD BYPASS UNCONFIGURED (148) 04:03: :21:23 SET SMART AIRFLOW CONFIG ERROR (132) 04:03: :21:23 SET VFD BYPASS UNCONFIGURED (170) 04:03: :21:23 SET POWER EXHAUST UNCONFIGURED (165) 04:03: :21:23 SET ECONOMIZER UNCONFIGURED ( 85) 04:03: :21:23 SET INCORRECT HUMIDITROL SETTINGS ( 82) 04:03: :20:31 RESET CONTROLLER RESET ( 82) 04:03: :20:31 SET CONTROLLER RESET ( 82) 04:03: :16:32 RESET CONTROLLER RESET ( 82) 04:03: :16:32 SET CONTROLLER RESET ( 82) 04:03: :14:10 RESET CONTROLLER RESET ( 82) 04:03: :14:10 SET CONTROLLER RESET ( 82) 04:03: :14:09 RESET CONTROLLER RESET ( 82) 04:03: :14:09 SET CONTROLLER RESET ====================================================== END OF REPORT Page 35

104 USB Service Report Example (If SmartAirflow is Installed) ====================================================== USB SMARTAIRFLOW REPORT ====================================================== Service Date 04:03:2014 Service Time 19:32:49 Serial No. Software Version Hardware Version Unit Number UNIT 1 SBUS Address 2 BACnet Address 2 Catalogue Number Model Number LGH060H4EH1Y CONFIGURATION ID 1 NTNNNNLN CONFIGURATION ID 2 NNNNNNNNN Status IDLE ====================================================== Calibrated On 04/03/ :12:56 0% % % % % % % ====================================================== END OF REPORT Supply Airflow Calibration Table PWM(%) Speed(rpm) Airflow(cfm) Supply Airflow Set Points Desired Actual Airflow(cfm) Mode Airflow(cfm) PWM(%) (With Damper Closed) Econ dp Cool Low Cool High Heat Ventilation Smoke Outside Airflow Targets Minimum Outside Air/Minimum DCV: 200 cfm Maximum DCV: 0 cfm Minimum CO2: 700 ppm Maximum CO2: 1200 ppm Ventilation Calibration(@ 2000 Supply Airflow(cfm)) Damper Outdoor Supply Supply Position(%) Econ dp Airflow(cfm) PWM(%) Airflow(cfm) Page 36

105 Page 37 Prodigy 2.0 Alarms Phase - Voltage Detection The M3 unit controller has the ability to detect that the rooftop unit power source has the correct frequency, phasing and voltage levels. When this feature is enabled, the detection of frequency and phasing is determined at power-on and the voltage level is continuously monitored. If any of these is out of range, then an alarm is logged and the rooftop unit operation is locked out. 1. Alarms Detected at Power-On Start up: LINE FREQ DOES NOT MATCH UNIT CONFIG LINE PHASING DOES NOT MATCH UNIT CONFIG 2. Alarms - Continuously Monitoring VAC PRMARY VOLTAGE LOW VAC PRIMARY VOLTAGE HIGH VAC SECONDARY VOLTAGE LOW VAC SECONDARY VOLTAGE HIGH Alarms 122 through 125 are auto-resetting. The rooftop operation will be restored five (5) minutes after the proper voltage levels are restored. Alarms 121 and 126 requires removing the power and correcting the issue before restoring the rooftop operation The frequency (60 or 50 Hz) and the phasing (single or three-phase) of the power source is determined by the model number stored in the M3 unit controller. This model number and enabling/disabling the Phase-Voltage Detection feature can be modified through the M3 unit controller user interface. See the Installation and Setup Guide for instructions on how to configure the CONFIGURATION ID 2, Position 5. Options are: N = NOT INSTALLED 1 = ENABLED INTERNAL (LENNOX) 2 = EXTERNAL (A42) PHASE DETECTION ON DI-2 3 = EXTERNAL (A42) PHASE DETECTION ON DI-3 When an event occurs, the M3 unit controller will display a code which corresponds to control function. Error codes are stored and can be recalled later. See the Installation & Setup Guide For The Prodigy M3 unit controller for information about viewing and silencing the alarms via the user interface. NOTE - Any references in the user interface referencing Advanced Airflow actually indicates Smart Airflow. Service Relays Selected alarms (marked with * in table result in the closure of the service relay contacts (DO1). The contacts remain closed until the Prodigy resets, or alarm condition is cleared AND alarm status is read via explicit SBUS command. Other modes of operation may be selected and are described in the Prodigy Application Guide (Advanced Features).

106 NOTE - Any references in the user interface referencing Advance Airflow actually indicates Smart Airflow. ALARM CODES TABLE 22. PRODIGY 2.0 ALARM AND EVENT CODES Selected alarms (marked with * in table result in the closure of the service relay contacts (DO1). DISPLAY MESSAGE Event Action Page RESERVED LOSS OF POWER DETECTION (SINGLE PHASE UNITS) 4* SMOKE DETECTOR INPUT (A173) 5* BLOWER S52 6* DIRTY FILTER SWITCH S27 7 RESERVED 8* STRIKE 3 ON BLOWER S RESERVED 12 COMP 1 HIGH PRESS S4 OR HI TEMP S5 Check power connections. The unit controller will set an alarm Erratic Power whenever service is turned off due to detection of power loss. User will be able to clear Erratic Power alarm via User Interface. The unit controller will clear Power Erratic after the Compressor Min OFF Delay has expired. If compressor demand is still present the unit controller will restart compressors after the Compressor Min OFF Delay has expired. A173 input is sensed as closed. will automatically clears once input is detected open. Smoke mode, check for source of smoke. While Smoke Alarm is active, the unit controller will not service any cooling, heating or ventilation demand. Unit off. Air flow switch is normally closed. Monitoring starts 16 Seconds after blower is started. if air flow switch is detected open after 16 second delay period, all compressors are de-energized, gas valves closed, electric heat turned off, economizer damper closed, and blower is stopped. alarm will automatically clear once the error timed off delay has expired and system will resume. Check blower operation. Dirty filter switch is detected as closed. will automatically clear once switch is detected open. Replace filter or check filter switch S27. Lockout, multiple alarm code 5 detected. alarm can be manually cleared via the user interface. Check blower operation. once problem is corrected, lockout alarm can be cleared by resetting the unit controller. Compressor is off. Check charge, fans and coil. NOTE: On Ultra High Efficiency units - if only alarm 12 is present then issue could be high temperature S5. IF alarm 12 is accompanied with alarm 14 then most likely high pressure S4. The unit controller will clear High pressure Switch alarm when corresponding High Pressure Switch is detected as closed. Compressor will not be restarted until corresponding High Pressure Switch is closed and Minimum Off Delay (Cooling or Heating) has expired. 13* STRIKE 3 ON COMP 1 HIGH PRESS S4 OR HI TEMP S5 14 COMP 2 HIGH PRESS S7 15* STRIKE 3 ON COMP 2 HIGH PRESS S5 OR S7 Compressor lockout. Check charge, fans and coil. Use service menu to clear lockouts. User will be able to clear high pressure switch compressor lockout and alarm via user interface. High pressure switch compressor lockout and alarm will be cleared after the M3 unit controller reset. High pressure switch compressor lockout and alarm will be cleared on termination of cooling demand. Default is 3 occurrences and can be set between 1 and 7 occurrences. Compress is off. Check charge, fans and coil. Note: On Ultra High Efficiency Units tandem alarms (14) Compressor 2 High Temperature S8. If accompanied with alarm 15 then most likely the S4 High Pressure Switch The unit controller will clear High pressure Switch alarm when corresponding High Pressure Switch is detected as closed. Compressor will not be restarted until corresponding High Pressure Switch is closed and Minimum Off Delay (Cooling or Heating) has expired. Compressor lockout. Check charge, fans and coil. Use service menu to clear lockouts. User will be able to clear high pressure switch compressor lockout and alarm via user interface. High pressure switch compressor lockout and alarm will be cleared after the M3 unit controller reset. High pressure switch compressor lockout and alarm will be cleared on removal of cooling demand. Default is 3 occurrences and can be set between 1 and 7 occurrences.

107 ALARM CODES DISPLAY MESSAGE TABLE 22. PRODIGY 2.0 ALARM AND EVENT CODES Selected alarms (marked with * in table result in the closure of the service relay contacts (DO1). Event Action Page 39 Compressor is off. Check charge, fans and coil. User will be able to clear high pressure switch compressor lockout and alarm via user interface. High pressure switch compressor High pressure switch compressor lockout and alarm is cleared on removal of cooling demand. Default is 3 occurrences and can be User will be able to clear high pressure switch compressor lockout and alarm via user interface. High pressure switch compressor High pressure switch compressor lockout and alarm is cleared on removal of cooling demand. Default is 3 occurrences and can be NOTE EVENTS COULD ALSO BE CAUSED BY A HIGH TEMPERATURE CONDITION ON SOME COMPRESSORS EQUIPPED WITH A HIGH TEMPERATURE SHUTDOWN. 16 COMP 3 HIGH PRESS S28 The unit controller will clear High pressure Switch alarm when corresponding High Pressure Switch is detected as closed. Compressor will not be restarted until corresponding High Pressure Switch is closed and Minimum Off Delay (Cooling or Heating) has expired. Compressor lockout. Check charge, fans and coil. Use service menu to clear lockouts. 17* STRIKE 3 ON COMP 3 HIGH PRESS S28 lockout and alarm will be cleared after the M3 unit controller reset. set between 1 and 7 occurrences. 18 COMP 4 HIGH PRESS S96 Compressor lockout. Check charge, fans and coil. The unit controller will clear High pressure Switch alarm when corresponding High Pressure Switch is detected as closed. Compressor will not be restarted until corresponding High Pressure Switch is closed and Minimum Off Delay (Cooling or Heating) has expired. Compressor lockout. Check charge, fans and coil. Use service menu to clear lockouts. 19* STRIKE 3 ON COMP 4 HIGH PRESS S96 lockout and alarm will be cleared after the M3 unit controller reset. set between 1 and 7 occurrences. 20 RESERVED 21 RESERVED 22 COMP 1 LOW PRESS S87 Compressor is off. Check charge, fans and coil. Use service menu to clear lockouts. 23* STRIKE 3 ON COMP 1 S87 Compressor is off. Check charge, fans and coil. Use service menu to clear lockouts. Number of occurrences is set using parameter 99 (MAX LO OCCURRENCES). Default is 3 occurrences. 24 COMP 2 LOW PRESS S88 Compressor is off. Check charge, fans and coil. 25* STRIKE 3 ON COMP 2 S88 Compressor is off. Check charge, fans and coil. Use service menu to clear lockouts. Number of occurrences is set using parameter 99 (MAX LO OCCURRENCES). Default is 3 occurrences. 26 COMP 3 LOW PRESS S98 Compressor if off. Check charge, fans and coil. 27* STRIKE 3 ON COMP 3 S98 Compressor is off. Check charge, fans and coil. Use service menu to clear lockouts. Number of occurrences is set using parameter 99 (MAX LO OCCURRENCES). Default is 3 occurrences. 28 COMP 4 LOW PRESS S97 Compressor if off. Check charge, fans and coil. 29* STRIKE 3 ON COMP 4 S97 Compressor is off. Check charge, fans and coil. Use service menu to clear lockouts. Number of occurrences is set using parameter 99 (MAX LO OCCURRENCES). Default is 3 occurrences. Check for block drain, condensate lines and drain pan overflow switch. 30* DRAIN PLAN OVERLFOW SHUTDOWN (S149) Alarm set if overflow switch is detected opened and compressor will be locked out. system will automatically clear alarm once switch is detected closed. System will resume operation (compressor lockout), after the Error Timed OFF Delay has expired following the Overflow switch alarm clear. 31 RESERVED

108 Page 40 ALARM CODES DISPLAY MESSAGE TABLE 22. PRODIGY 2.0 ALARM AND EVENT CODES Selected alarms (marked with * in table result in the closure of the service relay contacts (DO1). Event Action 32 COMP 1 FRZSTAT OPEN S49 Compressor is off. Check freezestat, air flow, charge, coil, air filter and outside air temperature. 33* STRIKE 3 COMP 1 FRZSTAT OPEN S49 Compressor is locked out. Check freezestat, air flow, charge, coil, air filter and outside air temperature. Number of occurrences is set using Parameter 81 (MAX FREEZE SAT OCC). Default is 3 occurrences. 34 COMP 2 FRZSTAT OPEN S50 Compressor is locked out. Check freezestat, air flow, charge, coil, air filter and outside air temperature. 35* STRIKE 3 COMP 2 FRZSTAT OPEN S50 Compressor is locked out. Check freezestat, air flow, charge, coil, air filter and outside air temperature. Number of occurrences is set using Parameter 81 (MAX FREEZE SAT OCC). Default is 3 occurrences. 36 COMP 3 FRZSTAT OPEN S53 Compressor is locked out. Check freezestat, air flow, charge, coil, air filter and outside air temperature. 37* STRIKE 3 COMP 3 FRZSTAT OPEN S53 Compressor is locked out. Check freezestat, air flow, charge, coil, air filter and outside air temperature. Number of occurrences is set using Parameter 81 (MAX FREEZE SAT OCC). Default is 3 occurrences. 38 COMP 4 FRZSTAT OPEN S95 Compressor is locked out. Check freezestat, air flow, charge, coil, air filter and outside air temperature. 39* STRIKE 3 COMP 4 FRZSTAT OPEN S95 Compressor is locked out. Check freezestat, air flow, charge, coil, air filter and outside air temperature. Number of occurrences is set using Parameter 81 (MAX FREEZE SAT OCC). Default is 3 occurrences. 40 RETURN AIR OVER HEAT LIMIT RT16 Heat is above set point. Check space conditions and sensors. 41 RETURN AIR UNDER COOL LIMIT RT16 Cool is below set point. Check space conditions and sensors. 42* BLOWER MOTOR OVERLOAD (S42 OR S135) SHUTDOWN System will set an alarm if S42 is detected as open. System will automatically clear alarm once S42 is detected closed. System will resume operation (servicing the demands), after the Error Timed OFF Delay has expired following S42 or S135 clear. Check external motor overloads. 43 Third and fourth compressors are off. Alarm automatically clears once 24VAC is present. The M3 unit controller will resume operation RESERVED 44* GAS VALVE ON NO DEMAND GV1 Unit is off. Gas valve 1 has power, but no demand. Check gas valve and wiring. 45* GAS VALVE ON NO DEMAND GV3 Unit is off. Gas valve 3 has power, but no demand. Check gas valve and wiring RESERVED 49 NO 24VAC ON A59 (C3) CONTROL once the ERROR TIME OFF DELAY is completed. Parameter 110 is used to set the reference delay. Factory delay default is 300 seconds. 50 PRIMARY HEAT 1 LIMIT OPEN S10 Heat section 1 primary gas heat limit switch is open. Check air flow, air filter, limit switch and wiring. 51* STRIKE 3 PRIMARY HEAT 1 LIMIT OPEN S10 Heat section 1 primary gas heat limit switch is open. Check air flow, air filter, limit switch and wiring. Number of occurrences is reached. 52 SECONDARY HEAT 1 LIMIT OPEN S21 Heat section 1 secondary gas heat limit switch is open. Check air flow, air filter, limit switch and wiring. 53* STRIKE 3 SECONDARY HEAT 1 LIMIT OPEN S21 Heat section 1 secondary gas heat limit switch is open. Check air flow, air filter, limit switch and wiring. Number of occurrences is reached. 54 HEAT 1 S15 LIMIT OPEN Heat section 1 primary electric heat limit switch is open. Check air flow, air filter, limit switch and wiring. 55* HEAT 1 ROLL OUT OPEN Heat section 1 flame roll out burner 1 switch is open. Check gas roll out switch S HEAT 1 CAI SWITCH S18 Check heat section 1 combustion air motor and proof switch. 57* STRIKE 3 HEAT 1 CAI SWITCH S18 Check heat section 1 combustion air motor and proof switch. Number of occurrences is reached. 58 HEAT 1 NO PROOF GAS VALVE GV1 Check heat section 1 ignition control, flame proof, gas valve 1 and gas supply. 59* STRIKE 3 NO PROOF GAS VALVE GV1 Check heat section 1 ignition control, flame proof, gas valve 1 and gas supply. Number of occurrences is reached.

109 ALARM CODES DISPLAY MESSAGE TABLE 22. PRODIGY 2.0 ALARM AND EVENT CODES Selected alarms (marked with * in table result in the closure of the service relay contacts (DO1). Event Action Page If measurement is out of specified range (including open/short detection) the system will ignore the Zone Temperature Sensor If measurement of Zone Temperature Sensor is out of specified range (including open/short detection) the system will change operating The system will clear the alarm, if zone temperature sensor measurement is detected in specified operating range and return the if measurement of the outdoor temperature sensor is out of specified range (including open / short detection, the alarm will be activated. If measurement is below specified range ( <5 % RH) the system will ignore the Relative Humidity readings. If measurement is if measurement of the discharge air temperature sensor is out of specified range (including open / short detection, the alarm will be if measurement of the return air temperature sensor is out of specified range (including open / short detection, the alarm will be PRIMARY HEAT 2 LIMIT OPEN S99 Check heat section 2 primary burner limit switch to see if it is open. Check air flow, limit switch and wiring. 61* STRIKE 3 PRIMARY HEAT 2 LIMIT OPEN S99 Check heat section 2 primary burner limit switch to see if it is open. Check air flow, limit switch and wiring. Number of occurrences is reached. 62 HEAT 2 LIMIT OPEN S100 Heat section 2 secondary heat limit switch is open. Check air flow, limit switch and wiring. 63* STRIKE 3 HEAT 2 LIMIT OPEN S100 Heat section 2 secondary heat limit switch is open. Check air flow, limit switch and wiring. Number of occurrences is reached. 64 RESERVED 65* HEAT 2 ROLLOUT OPEN S69 Check roll out sensor and gas supply. Number of occurrences is reached. 66 HEAT 2 CAI SWITCH S45 Check heat section 2 combustion air motor and proof switch. 67* STRIKE 3 HEAT 2 CAI SWITCH S45 Check heat section 2 combustion air motor and proof switch. Number of occurrences is reached. 68 HEAT 2 NO PROOF GAS VALVE GV3 Check heat section 2 ignition control, flame roof, gas valve 3 and gas supply. 69* STRIKE 3 NO PROOF GAS VALVE GV3 Check heat section 2 ignition control, flame roof, gas valve 3 and gas supply. Number of occurrences is reached RESERVED 73 NETWORK SENSOR ERROR Check with integrator for refresh rate, network status lights and wiring. readings and set the alarm. 74* ZONE (ROOM) SENSOR A2 mode to the specified Backup mode (None, Local Thermistor or Return Air temp). system to monitoring the A2 sensor as the primary sensor input. Check zone (room) sensor and wiring 75* OUTDOOR TEMPERATURE SENSOR (RT17) alarm will automatically clear once in range condition is detected. Check sensor and wiring. 76* HUMIDITY SENSOR A91 above the specified range( >100% RH) the system will limit the value to 100%. If measurement of Relative Humidity Sensor is below specified range while the dehumidification mode using RH sensor is enabled, the system will set an alarm. The system will clear the alarm if Relative Humidity sensor measurement is detected in specified operating range OR dehumidification mode using RH sensor is disabled. Check sensor and wiring. 77* DISCHARGE AIR TEMP SENSOR RT6 activated. alarm will automatically clear once in range condition is detected. Check sensor and wiring. 78* RETURN AIR TEMP SENSOR (RT16) activated. alarm will automatically clear once in range condition is detected. Check sensor and wiring. 79* ADD ON BOARD PROBLEM Add-on board problem, reset M3 unit controller to clear. When the communication alarm 80 persists for more than 30 seconds even after several retries for establishing the communication this Alarm is logged. Alarm can only be cleared by M3 Unit controller reset.

110 Page 42 ALARM CODES 80 DISPLAY MESSAGE ADD ON BOARD COMMUNICATION PROB LEM TABLE 22. PRODIGY 2.0 ALARM AND EVENT CODES Selected alarms (marked with * in table result in the closure of the service relay contacts (DO1). Event Action When M3 is not able to communicate with any attached add-on boards (C3 and GP3) this alarm code is logged. The M3 unit controller will retry to establish the communication once every 5 second. Alarm is automatically cleared once communication is restored. 81 REHEAT SETUP ERROR Check reheat settings. Alarm 81 is raised under these two conditions: 1. If the user sets up the unit to use supermarket reheat on a non gas unit. 2. If the user sets up the unit to use Humiditrol reheat but the heater type is heat pump 82 CONTROLLER PROBLEM If set when M3 unit controller powers up. Will Indicated reason for reset if known. 83* INCORRECT SETTINGS the M3 unit controller will attempt to detect the presences of the daughter card. if not detected, this alarm will be set. 84 RESERVED 85 INCORRECT HUMIDITROL SETTINGS Check Humiditrol settings. Check Configuration ID 1, position 1 and verify that the position is not set to U. Should be set to either N (not installed) or H (Humiditrol). Alarm will automatically clear once correct option is set. 86* CONFLICTING THERMOSTAT INPUT Check thermostat inputs for simultaneous heat and cooling wiring. Once condition is corrected, unit controller will resume operation after error time off day has expired RESERVED If Enthalpy Sensor failure is detected, the system will disable 'Free Cooling' operation. 91* OUTDOOR ENTH SENSOR A7 ential). Valid Indoor Enthalpy Sensor reading is required for 'ODE differential' (Outdoor differential). Check Economizer Parameters 160 and 161. Also check enthalpy Parameters 162 and 163. Check sensor and wiring. 92* INDOOR ENTH SENSOR A62 If Enthalpy Sensor failure is detected, the system will disable 'Free Cooling' operation. Note: Valid Outdoor Enthalpy Sensor reading is required for both 'ODE' (Outdoor Enthalpy) and 'ODE differential' (Outdoor differential). Valid Indoor Enthalpy Sensor reading is required for 'ODE differential' (Outdoor differential). 93* BACKUP MODE DALONE MODE and backup sensor is set to RETURN AIR BACKUP. while running in backup mode the unit controller will set this alarm. The unit controller will return from Backup mode to Primary (Main) mode on a reset or after the Primary mode (room Sensor is not in error or OR network communication is re-established and available for 300 seconds RESERVED 99* OUTDOOR ECON SENSOR A24 range for more than five minutes with blower stopped. The M3 unit controller will disable the Outdoor Air CFM control. The alarm 100* AIR VOL CONTROL SETUP ERROR Check for proper installation of GP board and settings. 101* MGV CONTROL SETUP ERROR Check for proper installation of GP board and settings. 102* GP CONTROL SETUP ERROR Check for proper installation of GP board and settings.

111 ALARM CODES DISPLAY MESSAGE TABLE 22. PRODIGY 2.0 ALARM AND EVENT CODES Selected alarms (marked with * in table result in the closure of the service relay contacts (DO1). Event Action Page * ADVANCED CONTROL SETUP ERROR Check M3 unit controller Configuration ID 1 settings RESERVED 106* BUILDING PRESS SENSOR A34 Check sensor and wiring. Check sensor and wiring. 107* DUCT SUPPLY PRESS SENSOR A DUCT SUPPLY HIGH PRESS SENSOR A30 The unit controller will set Supply Air Static Pressure Sensor (A30) error status if: Input signal is above 4.9" wc for more than 30 seconds. OR Input signal is below 0.1"wc 20 seconds after the blower has started with setting at or above Blower Output Static Duct Alarm Check. The M3 unit controller will clear the Supply Air Static Pressure Sensor (A30) error status and alarm after the expiration of Error Time OFF delay. Check sensor and wiring. The unit controller will shutdown operation for Error OFF time (Parameter 110) if supply supply air static pressure exceeds Supply static shutdown setpoint for 20 seconds (default) Parameter 42. The unit controller will clear High Supply Static (Duct) Pressure after Error OFF Time has expired and static duct pressure is below Supply Static Set Point Shutdown. Check sensor and wiring. Prodigy controller shall "lock out" a unit operation after the Max Static Duct Pressure Occurrences have occurred of Supply Static The number of strikes is three by default. this can be changed using parameter 43. Optional occurrence setting is 1 to 7. Power source line frequency is determined by the entered model number. This alarm is enabled by the Phase Voltage Detection 109* STRIKE 3 DUCT SUPPLY PRESS SENSOR Pressure Sensor Error (alarm 107) and/or High Supply Static (Duct) Pressure (alarm 108). A30 User shall be able to clear Supply Static Pressure lockout & alarm via User Interface. Supply Static Pressure lockout & alarm shall be cleared after the Prodigy controller reset. 110 WAITING ON NETWORK DATA Check network or comfort sensor and wiring. 111 PROFILE ERROR Configuration profile unrecoverable. Settings may have changed RESERVED 121* LINE FREQ DOES NOT MATCH UNIT CONFIG feature. M3 unit controller does not have an automatic clearing method, unit power cycle or reset will be required to re-evaluate the phase sequence again. 122* 24VAC PRIMARY VOLTAGE LOW 123* 24VAC PRIMARY VOLTAGE HIGH Low output voltage on T1 transformer. alarm set when 24VAC voltage low if calculated RMS voltage is below low voltage alarm threshold for more than two seconds. System will stop unit operations (cooling, heating and ventilation). Low voltage threshold is 18VAC. The M3 unit controller will clear alarm 24VAC Voltage Low if calculated RMS voltage is above Low Voltage Alarm Threshold + 1 VAC for more than two seconds. After the low 24VAC alarm has been cleared, the M3 unit controller will ignore all service demands until the Error Time Off Delay has expired. High output voltage on T1 transformer. alarm set when 24VAC voltage high if calculated RMS voltage is below low voltage alarm threshold for more than two seconds. System will stop unit operations (cooling, heating and ventilation). Low voltage threshold is 30VAC. The M3 unit controller will clear alarm 24VAC Voltage high if calculated RMS voltage is above High Voltage Alarm Threshold + 1 VAC for more than two seconds. After the HIGH 24VAC alarm has been cleared, the M3 unit controller will ignore all service demands until the Error Time Off Delay has expired.

112 Page 44 ALARM CODES DISPLAY MESSAGE 124* 24VAC SECONDARY VOLTAGE LOW 125* 24VAC SECONDARY VOLTAGE HIGH LINE PHASING DOES NOT MATCH UNIT 126* CONFIG RESERVED TABLE 22. PRODIGY 2.0 ALARM AND EVENT CODES Selected alarms (marked with * in table result in the closure of the service relay contacts (DO1). Event Action Low output voltage on T1 transformer. alarm set when 24VAC voltage low if calculated RMS voltage is below low voltage alarm threshold for more than two seconds. System will stop unit operations (cooling, heating and ventilation). Low voltage threshold is 18VAC. The M3 unit controller will clear alarm 24VAC Voltage Low if calculated RMS voltage is above Low Voltage Alarm Threshold + 1 VAC for more than two seconds. After the low 24VAC alarm has been cleared, the M3 unit controller will ignore all service demands until the Error Time Off Delay has expired. High output voltage on T1 transformer. alarm set when 24VAC voltage high if calculated RMS voltage is below low voltage alarm threshold for more than two seconds. System will stop unit operations (cooling, heating and ventilation). Low voltage threshold is 30VAC. The M3 unit controller will clear alarm 24VAC Voltage HIGH if calculated RMS voltage is above high voltage alarm Threshold + 1 VAC for more than two seconds. After the high 24VAC alarm has been cleared the M3 unit controller will ignore all service demands until the Error Time Off Delay has expired. during power up or reset of unit, Mismatch on single or 3 phase power, or reverse rotation on 3 phase detected. This alarm is enabled by the Phase Voltage Detection feature. 129* VFD SHUTDOWN VFD fault detected. Check belt and for blower overload. Fix source of fault and reset M3 unit controller. 130 VFD BYPASS ENGAGED VFD bypass mode. Mode is engaged. Blower may or may not be disengage. 131 RESERVED 132 VFD BYPASS NOT CONFIGURED VFD bypass mode has not been selected. Unit operates as if bypass is not installed. 133 RESERVED 134 ADVANCED AIRFLOW LOW SUPPLY CFM Advanced Airflow enabled RTU indicates airflow target cannot be achieved. Check cause of airflow reduction such as dirty filter, changes in duct work, etc 135* ADVANCED AIRFLOW NO AIRFLOW Blower RPM is too low as indicates by blower status. This means that the blower is not working. Repair blower and reset M3 unit controller. 136* ADVANCED AIRFLOW OUTSIDE AIR DAMPER/ECON MECHANICAL FAULT Outdoor air damper stuck or actuator problem. 137 ADVANCED AIRFLOW LOW OUTDOOR AIR FLOW Outdoor airflow is too low so the building is not getting the designed outdoor airflow based on IAQ. 138 RESERVED 139 ADVANCED AIRFLOW OUTDOOR AIRFLOW TOO HIGH Ventilation CFM is too high so the RTU is wasting energy. 140 ADVANCED AIRFLOW CFM UNATTAINABLE TARGET TOO LOW 141 ADVANCED AIRFLOW CFM UNATTAINABLE TARGET TOO HIGH 142 RESERVED 143* ADVANCED AIRFLOW DAMPER PRESSURE ERROR RESERVED 146 SERVICE LOGGED Service event logged verify the MSAV blower settings and set the CM targets below set CFM. The alarm value will be displayed on the M3 unit controller screen. verify the MSAV blower settings and set the cm targets below set CFM. The alarm value will be displayed on the M3 unit controller screen. Outdoor air differential pressure sensor value not in valid range. Might be tubing problem or high return duct resistance.

113 ALARM CODES DISPLAY MESSAGE TABLE 22. PRODIGY 2.0 ALARM AND EVENT CODES Selected alarms (marked with * in table result in the closure of the service relay contacts (DO1). Event Action Page * OA DAMPER ERROR During free cooling damper is not modulating. 148* ADVANCED AIRFLOW CONFIG ERROR Economizer should be installed and blower should be ECM type. 149* 150* OUTDOOR AIR DIFF PRESSURE SENSOR ERROR NOT ECONOMIZING WHEN OUTDOOR AIR IS SUITABLE 151* ECONOMIZING WHEN OUTDOOR AIR IS NOT SUITABLE RESERVED Check outdoor air damper differential pressure sensor and wiring. May be due to the damper motor being unplugged or disconnected. my be due to damper motor being blocked open and not closing. 165 ECONOMIZER NOT CONFIGURED configuration id 1, position 2 is set to u. select applicable option using setup/install wizard * 169* CAI PRESSURE SWITCH STUCK CLOSED GV1 CAI PRESSURE SWITCH STUCK CLOSED GV2 COMBUSTION AIR SW NOT OPEN LOCKOUT GV1 COMBUSTION AIR SW NOT OPEN LOCKOUT GV2 170 POWER EXHAUST NOT CONFIGURED Configuration ID 1, position 3 is set as U (unconfigured). This alarm will occur when the combustion air pressure switch (S18) is detected as closed immediately after the furnace demand relay is energized and before the combustion air blower is energized. Gas valve 1. This alarm will occur when the combustion air pressure switch (S45) is detected as closed immediately after the furnace demand relay is energized and before the combustion air blower is energized. Gas valve 2. System locked out due to S45 switch closed and a specific number occurrences detected based on Parameter 72 (MAX CAI NO PRF OCC) setting during a single cycle. 171 POWER EXHAUST CONFIGURATION ERROR Configuration ID 1, position 4 is set correctly. if position 3 is configured then position 4 must be also. 172 ADVANCED AIR FLOW CONTROL NOT CONFIGURED 173 AIR FLOW SWITCH CONFIG ERROR Verify that Configuration ID 2, position 1 is set correctly ZONE (ROOM) BYPASS DAMPER CONFIGUR ATION ERROR INVALID LOAD SHEDDING INPUT CONFIGURATION SBUS RECEIVED AN OBSOLETE M3 COMMAND If Configuration ID 1, position 6 - blower VFD bypass is set to A or M, then Configuration ID 2, position 1 must be set to C or D. Room bypass damper operation is only compatible with cab blowers. prodigy will only allow zone bypass unit operation if configuration ID1 is set to installed for units with B or T type blowers. alarm will automatically clear when configuration conflict is corrected. Alarm will occur if load shedding input is shared with other optional devices or inputs, for example - global, blower overload, drain pan overflow, etc. This alarm occurs when a SBUS master device sends a M2 style command to the M3 unit controller. The alarm is immediately cleared and a history of the event is stored. 177 MODEL NUMBER NOT DEFINED Missing model configuration data. run setup > install and complete model number information RESERVED 182 ULTRA: SUCTION PRESSURE SENSOR ERROR Prodigy provides 0-5VDC analog input for the suction pressure sensor. Sensor output is connected to P333, pin 1. valid suction pressure range is 0 to 300 psig. If Suction Pressure Sensor is detected on Ultra unit falls below the 30 psig then Prodigy will assume that the Pressure Sensor sensor is faulty and ignore Pressure Sensor readings. alarm will automatically clear once input is within normal operating range. The alarming value indicates which suction pressure sensor failed. 0 - Tandem 1 Suction Pressure Sensor Failure 1 - Tandem 2 Suction Pressure Sensor Failure

114 ALARM CODES DISPLAY MESSAGE TABLE 22. PRODIGY 2.0 ALARM AND EVENT CODES Selected alarms (marked with * in table result in the closure of the service relay contacts (DO1). Event Action Page ULTRA: SUCTION PRESSURE SENSOR ERROR ULTRA: SUCTION PRESSURE SENSOR ERROR ULTRA: COMPRESSOR 1 SUMP TEMPERATURE SENSOR ERROR ULTRA: COMPRESSOR 2 SUMP TEMPERATURE SENSOR ERROR 185 ENGINEERING USE ONLY. 186* BLOWER MOTOR FAULT Prodigy provides 0-5VDC analog input for the suction pressure sensor. Sensor output is connected to P333, pin 1. valid suction pressure range is 0 to 300 psig. If Suction Pressure Sensor is detected on Ultra unit falls below the 30 psig then Prodigy will assume that the Pressure Sensor sensor is faulty and ignore Pressure Sensor readings. alarm will automatically clear once input is within normal operating range. The alarming value indicates which suction pressure sensor failed. 0 - Tandem 1 Suction Pressure Sensor Failure 1 - Tandem 2 Suction Pressure Sensor Failure Prodigy provides 0-5VDC analog input for the suction pressure sensor. Sensor output is connected to P333, pin 1. valid suction pressure range is 0 to 300 psig. If Suction Pressure Sensor is detected on Ultra unit falls below the 30 psig then Prodigy will assume that the Pressure Sensor sensor is faulty and ignore Pressure Sensor readings. alarm will automatically clear once input is within normal operating range. The alarming value indicates which suction pressure sensor failed. 0 - Tandem 1 Suction Pressure Sensor Failure 1 - Tandem 2 Suction Pressure Sensor Failure Alarm will occur when an open or short condition is detected. Alarm will also occur when unit controller via the temperature sensor detects an out of range. Valid range is 30 F to 150 F. Possible causes are faulty temperature sensor / circuit or improper installation. The alarming value indicates which Compressor Sump Temp sensor failed. 0 - Tandem 1 Compressor 1 Sump Temp Sensor Failure 1 - Tandem 2 Compressor 1 Sump Temp Sensor Failure Alarm will occur when an open or short condition is detected. Alarm will also occur when unit controller via the temperature sensor detects an out of range. Valid range is 30 F to 150 F. Possible causes are faulty temperature sensor / circuit or improper installation. The alarming value indicates which Compressor Sump Temp sensor failed. 0 - Tandem 1 Compressor 2 Sump Temp Sensor Failure 1 - Tandem 2 Compressor 2 Sump Temp Sensor Failure In systems with EBM blower, prodigy shall start monitoring the motor alarm output (normally closed relay contact) ten seconds after blower command is sent. The M3 unit controller will stop unit operation if fault conditions (relay contact open logic input high) are detected. Note: Motor alarm is wired in P259 7; shared with VFD alarm and ECM blower rpm input. Alarm will clear when in range temperature is detected.

115 CONTROLLER SIGNAL REFERENCES M3 UNIT CONTROLLER Pin # 1 2 Table 1. P259 Blower ECM Motor Label Description Type ODF / PWM 1 ODF / PWM 2 OUTDOOR FAN PWM1 OUTDOOR FAN PWM2 PWM PWM 3 GND DIGITIAL GROUND GND 4 IDB / PWM / VO A-BOX: INDOOR BLOWER PWM PWM * MSAV / VAV: VFD VOLT OUT 0-10 VAC OUT * EBM ULTRA: VOLT OUT 0-10 VAC OUT * ZONE: DAMPER ACUATOR (CAV) 0-10 VAC 5 MSAV RELAY * A BOX: 2 ND STAGE COMPRESSOR 1 24VAC DO * MSAV / VAV: EXHAUST 2 ND BY PASS 24VAC DO 6 GND DIGITAL GROUND GND 7 IDB A-BOX: IDB FEEDBACK 5VDC * MSAV / VAV / ULTRA B-C ALARM CONTACT (MUST BE WIRED TO 5VDC GND) 8 V BIAS V-BIAS 18VDC Table 2. P262 Economizer Control Pin # Label Description Type 1 T1 24VAC POWER 24VAC 2 GND DIGITAL GROUND 24VAC COM 3 VOT DAMPER CONTROL 2-10VDC DO 4 DPOS DAMPER POSITION FEEDBACK 2-10VDC DI 5 GND DIGITAL GROUND 6 RT16 + RETURN AIR TEMP RES 0-5VDC 7 A7 S OUTDOOR ENTHALPY SENSOR 4-20 ma AI 8 18VDC 18VDC POWER 18VDC 9 A62 S INDOOR ENTHALPY SENSOR 4-20 ma AI 10 A173 SMOKE DETECTOR 24VAC DI 11 T1 SMOKE DETECTOR 24VAC 12 COM SMOKE DETECTOR 24VAC COMMON Table 3. P263 High and Low Pressure 24VAC POWER Pin # Label Description Type 1 UTS2 ULTRA SUMP TEMP COMPRESSOR 2 RES 0-5VDC 2 GND GROUND 3 S4 HIGH PRESSURE COMPRESSOR 1 SW 24VAC 4 T1 24VAC POWER 24VAC 5 S87 LOW PRESSURE COMPRESSOR 1 NC SW 24VAC 6 S7 HIGH PRESSURE COMPRESSOR 2 SW 24VAC 7 T1 24VAC POWER 24VAC 8 S88 LOW PRESSURE COMPRESSOR 2 SW 24VAC Table 4. P264 Blower Deck Area Pin Label Description Type # 1 RT6 DISCHARGE AIR TEMP RES 0-5VDC 2 GND DIGITAL GROUND 3 S49 FREEZESTAT 1 (NC) SW 5VDC 4 VSS 5VDC 5VDC 5 S50 FREEZESTAT 2 (NC) SW 5VDC 6 S52 AIR FLOW SWITCH (NO) SW 5VDC 7 VSS 5VDC 5VDC 8 S27 DIRTY FILTER SWITCH (NO) SW 5VDC Table 5. P265 Contactors / Relays Pin # Label Description Type 1 COM 24VAC COMMON 24VAC COM 2 K1 CONTACTOR COMPRESSOR 1 24VAC DO 3 K2 CONTACTOR COMPRESSOR 2 24VAC DO 4 K3 CONTACTOR BLOWER 24VAC DO * A-BOX INDOOR BLOWER LOW 24VAC DO 5 COM 24VAC COMMON 24VAC COM 6 K10 RELAY OUTDOOR FAN 1 24VAC DO * RELAY K191 ULTRA: CRANKCASE HEATER 24VAC DO 7 K68 RELAY OUTDOOR FAN 2 24VAC DO * A-BOX: INDOOR BLOWER HIGH 24VAC DO * RELAY K196 ULTRA: CRANK CASE HEATER 24VAC DO 8 COM 24VAC COMMON 24VAC COM 9 K13 RELAY COMBUSTION AIR BLOWER 1 24VAC DO 10 COM 24VAC COMMON 24VAC COM 11 K85 RELAY EXHAUST FAN 24VAC DO Table 6. P266 Heating Control and Damper ΔP Sensor Pin # Label Description Type 1 COM 24VAC COMM 24VAC COM 2 A3, K15 HEAT 1, ELECTRIC HEAT 1 24VAC DO 3 W2, K16 HEAT 2, ELECTRIC HEAT 2 24VAC DO 4 DDPS DAMPER DIFFER. PRESSURE SENSOR 0-5VDC 5 GND GROUND GND 6 5VDC 5VDC SUPPLY 5VDC Table 7. P267 Outdoor Fan Area Pin Label Description Type # 1 RT17 OUTDOOR AIR TEMP RES 0-5VDC 2 GND DIGITAL GROUND 3 S11 LOW PRESSURE FAN 1 SW 24VAC 4 R 24VAC 24VAC DO 5 S84 LOW PRESSURE FAN 2 SW 24VAC 6 A30 STATIC DUCT PRESSURE 10VDC 7 GND GROUND GND 8 5VDC 5VDC SUPPLY 5VDC Page 47

116 Pin # 1 T1-1 2 T1-COM 3 T T18-COM Table 8. P268 Power Label Description Type 24VAC POWER TRANSFORMER 1 24VAC COMMON TRANSFORMER 1 24VAC POWER TRANSFORMER 1 24VAC COMMON TRANS FORMER 1 24VAC 24VAC COM 24VAC 24VAC COM Table 9. P269 Reheat - Humiditrol: Ultra - TXV Pin Label Description Type # 1 T43 24VAC POWER 24VAC 2 T43 24VAC COMMON 24VAC COM 3 L14 REHEAT SOLENOID 1: ULTRA TXV 1 24VAC DO 4 L30 REHEAT SOLENOID 2: ULTRA TXV 2 24VAC DO 5 RSV RESERVED 24VAC DI Table 10. P271 Heating 1 Safety Pin # Label Description Type 1 S10-C PRIMARY LIMIT BURNER 1C 2 S10-NC PRIMARY LIMIT BURNER 1 NC 3 S10-NO PRIMARY 4 S21-C SECONDARY LIMIT BURNER 1C SW 24VAC 5 S21-NC SECONDARY LIMIT BURNER 1 SW 24VAC NC 6 S47 ROLL OUT SWITCH BURNER 1 7 S47 ROLL OUT SWITCH BURNER 1 SW 24VAC 8 S18 CAB PROOF SWITCH 1 9 S18 CAB PROOF SWITCH 1 SW 24VAC 10 GV1 GAS VALVE SENSE 1 24VAC Table 11. P297 Thermostat Pin # Label Description Type 1 R TRANSFORMER 1 24VAC POWER 24VAC 2 C TRANSFORMER 1 24V COMMON 24VAC COMM 3 G BLOWER SIGNAL 24VAC DI 4 W1 1ST STAGE HEATING 24VAC DI 5 W2 2ND STAGE HEATING 24VAC DI 6 Y1 1ST STAGE COOLING 24VAC DI 7 Y2 2ND STAGE COOLING 24VAC DI 8 OCP OCCUPIED SIGNAL 24VAC DI 9 GLO GLOBAL CONTROL INPUT 24VAC DI 10 RSV RESERVED NA Table 12. P298 IAQ Interface Pin # Label Description Type 1 R TRANSFORMER 1 24VAC POWER 24VAC 2 C TRANSFORMER 1 24V COMMON 24VAC COMM 3 IAQ+ INDOOR AIR QUALITY 0-10VDC AI 4 GND INDOOR AIR QUALITY 0-10VDC AI 5 HUM RH SENSOR 0-10VDC AI 6 GND DIGITAL GROUND GND 7 TMP ROOM SENSOR THERMISTOR 8 DO1 SERVICE RELAY OUTPUT 24VAC DO 9 GND 24 VAC COMMON 24VAC COMM 10 DO2 EXHAUST FAN 24VAC DO P299 Safety Table 13. P299 Safety 1 DI1 SMOKE DETECTOR (NO) 24VAC DI 2 R TRANSFORMER 1 24VAC POWER 24VAC 3 C TRANSFORMER 1 24V COMMON 24VAC COMM 4 DI2 DIGITAL INPUT 2 FORMER (S42 & S135) 24VAC DI 5 R TRANSFORMER 1 24VAC POWER 24VAC 6 DI3 DIGITAL INPUT 3 FORMER (S149 & A42 FOR A BOX) 24VAC DI 7 R TRANSFORMER 1 24VAC POWER 24VAC 8 DI4 DIGITAL INPUT 4 FORMER (HUMI DITROL INPUT) 24VAC DI 9 C TRANSFORMER 1 24V COMMON 24VAC COMM 10 RSV RESERVED NA Table 14. P333 Ultra - Sensors Pin # Label Description Type 1 UPS1 SUCTION PRESSURE 0-5VDC 2 5VDC 5VDC SUPPLY 5VDC 3 GND DIGITAL GROUND 4 UTS1 SUMP TEMP COMPRESSOR 1 RES 0-5VDC Page 48

117 GP3 CONTROL Table 15. P348 Pin # Description Type 1 5VDC SUPPLY (10MA MAX) 5VDC 2 ANALOG/PWM OUTPUT 4 AO: 0-10VDC; PWM: 0-15V * ULTRA C: PWM FAN B23/B24 PWM: 0-15V 3 ANALOG/PWM OUTPUT 2 AO: 0-10VDC; PWM: 0-15V 4 ANALOG/PWM OUTPUT 3 AO: 0-10VDC; PWM: 0-15V * ULTRA C: PWM FAN B22 PWM: 0-15V 5 ANALOG/PWM OUTPUT 1 AO: 0-10VDC; PWM: 0-10V 6 RELAY 1 - NORMALLY OPEN RELAY (DRY) CONTACT 7 RELAY 1 - COM RELAY (DRY) CONTACT 8 RELAY 2 - COM RELAY (DRY) CONTACT 9 RELAY 2 - NORMALLY OPEN RELAY (DRY) CONTACT 10 DIGITAL INPUT 3 24V DI 11 DIGITAL INPUT 4 24V DI 12 DIGITAL INPUT 2 24V DI 13 THERMISTOR INPUT 2 (10K@25C) * ULTRA C: SENSOR THERMISTOR RES VDC COMPRESSOR 4 14 ANALOG INPUT VDC * ULTRA C: TRANSDUCER TANDEM COMP B 0-5VDC 15 ANALOG INPUT VDC 16 THERMISTOR INPUT 1 (10K@25C) * ULTRA C: SENSOR THERMISTOR RES VDC COMPRESSOR 3 17 ANALOG INPUT 3 (0-10VDC) 0-10VDC 18 GROUND GND 19 GROUND GND 20 GROUND GND 21 GROUND GND 22 COM COM 23 COM COM 24 DIGITAL INPUT 1 24V DI C3 CONTROL Table 16. P118 Pin # Label Description Type 1 24VAC 24VAC SUPPLY (FOR RELAY OUT PUTS) 24VAC 2 COM 24VAC COM 24VAC COM 3 OPEN (NOT USED) 4 OPEN (NOT USED) 5 FAN3 RELAY OUTDOOR FAN 3 24VAC DO * ULTRA C: RELAY K233 CRANKCASE HEATER COMP 3 6 OPEN (NOT USED) 7 OPEN (NOT USED) 8 FAN4 RELAY OUTDOOR FAN 4 24VAC DO * ULTRA C: RELAY K234 CRANKCASE HEATER COMP 4 9 FAN5 RELAY OUTDOOR FAN 5 24VAC DO 10 FAN6 RELAY OUTDOOR FAN 6 24VAC DO 11 CMP3 CONTACTOR COMPRESSOR 3 24VAC DO 12 CMP4 CONTACTOR COMPRESSOR 4 24VAC DO Table 17. P119 Pin # Label Description Type HPSW3 HPSW4 HIGH PRESSURE SWITCH COMPRESSOR 3 HIGH PRESSURE SWITCH COMPRESSOR 4 SW 24VAC SW 24VAC FRZST3 FREEZESTAT COMPRESSOR 3 SW 5VDC LPSW3 LOW PRESSURE SWITCH COMPRESSOR 3 SW 24VAC FRZST4 FREEZESTAT COMPRESSOR 4 SW 5VDC 11 LOW PRESSURE SWITCH LPSW4 12 COMPRESSOR 3 13 OPEN (NOT USED) 14 OPEN (NOT USED) 15 OPEN (NOT USED) 16 OPEN (NOT USED) SW 24VAC Table 18. P272 Pin # Label Description Type 1 PRIMARY LIMIT BURNER 2 C PRIMARY 2 PRIMARY LIMIT BURNER 2 NC LIMIT 3 PRIMARY LIMIT BURNER 2 NO SW 24VAC 4 SECONDARY LIMIT BURNER 2 C SW 24VAC SECONDARY 5 SECONDARY LIMIT BURNER 2 NC GAS2 SAFETY SWITCHES ROLLOUT SWITCH BURNER 2 CAB PROOF SWITCH 2 SW 24VAC SW 24VAC 10 GAS VALVE SENSE 2 24VAC DI Table 19. P332 Pin # Label Description Type 1 COM 24VAC COM 24VAC COM 2 A12 K17 HEAT 3, ELECTRIC HEAT 3 24VAC DO 3 W2 K18 HEAT 4, ELECTRIC HEAT 4 24VAC DO 4 CAB2 RELAY COMBUSTION AIR BLOWER 2 24VAC DO Page 49

118

119 Wiring Diagrams Page 50

120 Wiring Diagrams (ACCESSORIES) A130 J298 P153 J153 TB37 K K K4 J104 P193 4 J Page 51

121 Quick Start Guide CAUTION Check rooftop unit electrical power for proper voltage and phasing. Check gas train components. 1. Turn on unit and dismiss alarm messages as necessary. 2. Follow SETUP > INSTALL menu to properly configure unit 3. Be sure unit is in normal operating mode as seen in display (COOLING, HEATING, IDLE, etc). 4. To verify operation use SERVICE > TEST menu. Control Mode Menu Setup Needed Tips THERMOSTAT (Factory set for 2-stage thermostat) Check LEDs for signals. Setup information to be verified with integrator. BACnet SETUP > NETWORK INTEGRATION > NETWORK TYPE = BACNET Follow wiring instructions including network termination Remember to set MAC address Expert level BACnet service manual available. Setup information to be verified with integrator. LonTalk Follow wiring instructions including network SETUP > NETWORK INTEGRATION > termination NETWORK TYPE = LONTALK XIF file available. Neuron ID on sticker. Expert level LonTalk service manual available. Follow wiring instructions including network L Connection termination SETUP > NETWORK INTEGRATION > Comfort Sensors are 24 VAC polarity sensitive. NETWORK TYPE = L-CONNECTION All network devices need to be correctly addressed Verify damper minimum positions Damper SETUP > TEST & BALANCE > DAMPER Refer to Economizer section of manual for more detail Local Mode Give unit time to start-up. SETUP > NETWORK INTEGRATION > NETWORK TYPE = RTU STANDALONE Humidity control requires sensor or error code 7649 Dehumidifier Three possible connections, LOCAL SENSOR, SETTINGS > RTU OPTIONS > NETWORK SENSOR and REHEAT DI4. DEHUMIDIFIER Analog sensor wiring is polarity sensitive Final motor CFM should be set by Test and Blower Change motor torque; see Balance technician SETUP > TEST & BALANCE > BLOWER Blower charts are located in the unit installation instruction. For Lennox Service Support LENNOX. For Lennox Commercial website, go to Page 52

122 INDEX A Abbreviations, Page 34 Auto Cycles, Page 22 B BACnet Occupancy Points, Page 22 Blower Operation Description, Page 22 Blower Operation Modes, On, Cycles, Cycles w/stir, Page 23 Blower Operation Schedule, Page 23 Blower Operation with Effective Occupancy, Page 22 C Comp Load Shedding, Page 5 Configuration ID 1 Advanced Air Flow Control System, Page 8 Blower Variable Frequency Drive Bypass, Page 8 Economizer, Page 8 Humiditrol, Page 8 Network Module, Page 8 Outdoor Air CFM Control, Page 8 Power Exhaust, Page 8 Power Exhaust Control, Page 8 Configuration ID 2, Page 9 Air Flow Proving Switch (S52), Page 9 Dirty Filter Switch (S27), Page 9 Electric Heat, Page 9 Load Shedding, Page 9 Motor Overload Switch (S42), Page 9 Overflow Switch (S149/S179), Page 9 Phase / Voltage Detection, Page 9 Ultra Violet Lamp, Page 9 Zone Bypass Damper, Page 9 D Damper Operation during Free Cooling, Page 25 Demand Control Ventilation, Page 29 E Economizer, Page 24 Economizer Checkout, Page 27 Enthalpy Sensor Output Current Honeywell C7400, Page 26 Enthalpy Set Point, Page 25 Page 53 F Firmware Update, Page 6 Free Cooling Compressor Lockout Mode and Low Ambient Set Point, Page 25 Free Cooling Damper Maximum Position, Page 27 H Heartbeat, Page 3 Humidity Sensor, Page 2 Humidity Sensor Connection, Page 2 L LED, Page 2 Level 1 Menu Options, Page 10 Lontalk Occupancy Points, Page 23 M Menu Data, Page 11 Advanced Status, Page 13 Factory, Page 12 History, Page 11 In/Outputs, Page 11 Network, Page 12 Runtimes, Page 13 Service Offline, Page 17 Replace, Page 16 Report, Page 17 Software Update, Page 17 Test, Page 16 Settings Control, Page 18 General, Page 21 Install, Page 20 RTU Options, Page 19 Setup Install, Page 14 Network Integration, Page 14 Test and Balance, Page 15 Mode Messages, Page 5 Model Number Blower Type, Page 7 Design Sequence, Page 7 Efficiency, Page 7 Factory Electric or Gas Heat, Page 7 Refrigerant, Page 7 Tonnage, Page 7 Type, Page 7 Voltage, Page 7

123 Motorized Outdoor Air Damper, Page 27 N Networking Serial Communications (RS-485), Page 33 O On-Continuous 1, Page 22 On-Continuous 2, Page 22 On-Continuous 3, Page 22 Outdoor Air Suitable for Free Cooling, Page 25 P Profiles, Page 6 R RJ-11, Page 2 S S-BUS, Page 2 System Status Display, Page 4 T Thermostat Connection, Page 2 Title 24, Page 22 U Unit Operations, Page 4 USB Flash Drive Usage, Page 2 USB Service Reports, Page 35 Page 54

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125 ECONOMIZERS Litho U.S.A /2014 Supersedes 7/2014 E1ECON ECONOMIZERS INSTALLATION INSTRUCTIONS FOR ECONOMIZERS AND OUTDOOR AIR HOODS USED WITH LG/LC 036, 048, 060, 072 UNITS Note - Disregard economizer installation section when dampers are factory-installed. Shipping and Packing List Package 1 of 1 contains: 1- Economizer damper assembly A 1- GED B (gravity exhaust / barometric relief damper) assembly 1- Exhaust hood kit containing: 1-Exhaust hood top A 2-Hood sides C 1-GED seal C 1- Outdoor air hood kit containing: 1-Outdoor air hood top A 2-Hood sides D 1- Birdscreen D 2- Bird screen brackets D 1- Bag assembly containing: #10-32 X 1/2 Self-drilling screws #10-16 X 5/8 Self-drilling screws A Already in place when economizer is factory-installed. B Optional GED already in place when economizer is factory-installed; shipped separately when PEF is factory-installed. C Shipped under the exhaust air cover when economizer is factory-installed. D Shipped in the blower section when economizer is factory-installed. Package 1 of 1 (ordered separately) contains: Used in horizontal airflow applications only 1- Return air cover Order Of Installation: Return air cover (horizontal airflow) Economizer Mixed air sensor (R1) Remove GED (horizontal airflow and PEF options) Optional OA/RA sensors Power exhaust fans GED seal in unit (PEF option) GED in lower hood (horizontal and PEF options) RA Transition (horizontal airflow) RA duct (horizontal airflow) Lower outdoor air hood Upper outdoor air hood WARNING Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a qualified installer, service agency or the gas supplier CAUTION Danger of sharp metallic edges. Can cause injury. Take care when servicing unit to avoid accidental contact with sharp edges. Application The E1ECON economizer is used with LG/LC units in downflow and horizontal air discharge applications. See table 1. See table 2 for the optional gravity exhaust kit. The economizer uses outdoor air for free cooling when temperature and/or humidity is suitable. LG/LC units are equipped with the following factory-installed, CEC Title 24 approved sensors: RT17 - Outside Air Temperature RT16 - Return Air Temperature RT6 - Discharge Air Temperature See figure 13 in the Start-Up section for sensor location. Optional field-provided sensors may be used instead of unit sensors to determine whether outdoor air is suitable for free cooling. Refer to table 3 in the Start-Up section. TABLE 1 Economizer Econ Type Part No.* Standard 90W High Performance 10U *Kits include GED and hoods. TABLE 2 Gravity Exhaust Kit Description Part No. *Used when power exhaust is either 74W field- installed or not installed. Used when power exhaust is factoryinstalled. *Kits include hoods. 72W Page 1

126 Install Economizer - Downflow 1- Open unit end panel and filter access panel. See figure 1. When gravity or power exhaust are field-installed, remove and discard the lower panel. 2- Remove and retain sensors from mounting bracket. See figure 2. Remove mounting bracket and discard. 3- Install damper assembly through end of unit. Fit opening in bottom of damper assembly over the return air opening. See figure Install retained sensors in the side of the economizer. See figure Disconnect jumper plug P3 from unit jack J3. Connect economizer plug P4 to unit jack J3 as shown in figure 4. UNIT SENSOR BRACKET A2 SENSOR (UNITS WITH DDC CONTROL) RT16 SENSOR REMOVE SENSORS AND BRACKET UNIT END PANEL SMOKE DETECTOR (WHEN EQUIPPED) FIGURE 2 FILTER ACCESS PANEL Lower panel provided only when economizer is factory-installed without gravity or power exhaust. Remove and discard when field-installing GED and/or PEF. FIGURE 1 Page 2

127 ECONOMIZER INSTALLATION ECONOMIZER (STANDARD ECONOMIZER SHOWN) B7 DAMPER MOTOR SMOKE DETECTOR (WHEN EQUIPPED) UNIT A2 SENSOR (UNITS WITH DDC CONTROL) RT16 SENSOR CONNECT ECONOMIZER PLUG P4 TO UNIT JACK J3 RETURN AIR OPENING FIGURE 3 FILTER SECTION P4 J3 EVAPORATOR COIL FIGURE 4 Page 3

128 GED (Barometric Relief Dampers) Note - GED is optional when economizer is factory-installed. Remove GED from the economizer (when present) and install in the exhaust air hood when: Optional power exhaust fans are installed Economizer is installed in horizontal air flow 1- Remove the GED from the economizer. See figure Install the GED in the exhaust or lower hood as shown in figure 6. REMOVE GED FIGURE 5 Page 4

129 ASSEMBLE HOODS OUTDOOR AIR HOOD SECURE TOP BRACKET WITH SCREW AFTER BIRDSCREEN IS IN PLACE BIRDSCREEN INSTALL LOWER BRACKET BEFORE INSTALLING BIRDSCREEN EXHAUST OR LOWER HOOD LOWER HOOD INSTALLED ONLY WHEN ECONOMIZER IS EQUIPPED WITH A GED GED INSTALLED IN HOODS WHEN POWER EXHAUST IS PRESENT. GED INSTALLED IN POWER EXHAUST LOCATION WHEN UNIT IS NOT EQUIPPED WITH POWER EXHAUST. SEE FIGURE 5. FIGURE 6 Page 5

130 Outdoor Air Hoods Factory-Installed Economizers Only - Both hood tops and pivot brackets are secured to unit. The lower hood is provided and installed only when the economizer is equipped with an optional GED. Hood parts are located under the exhaust panel and in blower section. Lift hood tops and assemble hoods as described for field-installed economizers. 1- Make sure all sensors and outdoor air section accessories are installed before installing hoods. 2- Install pivot brackets and seal on unit as shown in figure Assemble hoods as shown in figure 6. Slide top of hoods into the ends of pivot brackets. Install bird screen bracket after bird screens are in place. 4- Install hoods on unit as shown in figure Caulk ends of pivot bracket to seal watertight. INSTALL PIVOTING BRACKETS AND GED SEAL (FIELD-INSTALLED ECONOMIZERS ONLY & 048 SHOWN) SIDE VIEW (036 & 048) REMOVE AND REUSE SCREWS (2) TO IN STALL BRACKET UNIT TOP INSTALL PIVOT BRACKETS PIVOT BRACKET MULLION SIDE VIEW (060 & 072) INSTALL GED SEAL FILLER PANEL (FACTORY- INSTALLED) UNIT TOP MAKE SURE SEAL IS INSTALLED BEFORE HOOD PIVOT BRACKET MULLION POWER EXHAUST SHOWN; GRAVITY EXHAUST LOCATED HERE WHEN UNIT IS NOT EQUIPPED WITH PED FIGURE 7 Page 6

131 INSTALL HOODS (036 & 048 SHOWN) SIDE VIEW (036 & 048) CAULK UNIT TOP PIVOT BRACKET HOOD MULLION INTAKE CAULK SIDE VIEW (060 & 072) UNIT TOP LOWER HOOD INSTALLED ONLY WHEN ECONOMIZER IS EQUIPPED WITH A GED FILLER PANEL (FACTORY- INSTALLED) PIVOT BRACKET MULLION HOOD EXHAUST FIGURE 8 Install Economizer - Horizontal A field fabricated return air duct transition and duct inlet must be installed in horizontal applications. 1- Remove unit end panel. See figure Install the downflow return air cover in horizontal airflow applications. Secure with #10 sheet metal screws provided in kit. See figure Make sure the horizontal return air cover on the back side of the unit remains in place. The opening is used when an economizer is not installed. See figure Install the economizer and R1 mixed air sensor and connect wiring as shown in appropriately named sections of this manual. UNIT BACK OF UNIT SUPPLY AIR HORIZONTAL AIRFLOW DO NOT ATTACH RETURN AIR DUCTWORK HERE RETURN AIR FIGURE 10 UNIT END PANEL DOWNFLOW RETURN AIR COVER FIGURE 9 Page 7 5- Install the field-fabricated return air duct transition and duct inlet on the unit end. See figure 11. Support the transition and duct inlet as needed. 6- Install the lower (exhaust) hood on the return air duct. The GED should already be installed in the hood as shown in the GED section of this manual. 7- Install the upper hood on the unit as shown in appropriate section of this manual.

132 TYPICAL HORIZONTAL APPLICATION TOP VIEW ECONOMIZER DAMPERS Barometric Relief Hood and Dampers RETURN AIR DUCT SUPPLY AIR DUCT SUPPLY AIR OUTLET BACK VIEW HORIZONTAL SUPPLY AIR OPENING RETURN AIR DUCT TRANSITION This opening not used in Horizontal Applications with Economizer RETURN AIR INLET OUTDOOR AIR HOOD HORIZON- TAL RETURN AIR OPENING EXHAUST HOOD EXHAUST AIR FIGURE 11 RETURN AIR DUCT TRANSITION RETURN AIR DUCT INLET Economizer Start-Up - M2 Unit Controller The unit will be equipped with either an M2 or M3 Unit Controller. M2 or M3 will be printed on the bottom of the Unit Controller near the SBUS connector. Use the appropriate start-up section in this manual and refer to the Unit Controller provided with the rooftop unit. Application manuals are available for both Unit Controllers. The economizer is controlled by the Unit Controller which is located in the unit control panel. A detailed menu layout can be found in the Unit Controller manual provided with each unit. A-Field-Installed Economizer The Unit Controller must be set to identify an economizer has been installed. 1- Use the Unit Controller keypad to enter the following menu: Setting / Install / Damper B-Free Cooling Mode and Setpoint On start-up, the economizer mode defaults to TEMP OFFSET. In this mode, free cooling is energized when the outdoor air temperature (RT17) is less than return air temperature (RT16) by at least the offset value. The default offset value is 10 F. Use the following menu path on the Unit Controller to adjust the free cooling mode or setpoint. See figure 13 for sensor location. Settings / Setpoints / Damper / Economizer Mode Refer to table 3 and figure 12 for additional free cooling modes and setpoints. The Unit Controller has a restricted range of input values for each mode as shown in table 3. Note - An energy management system may be used to provide the outdoor air suitable (OAS) signal via network connection. The free cooling mode must be set to one of the TEMP modes to allow this function. 2- Use the up/down arrows to display ECON and press the SELECT button (!SET! will display). 3- Press the left arrow returning up the menu path until the Unit Controller resets and saves the change. The Unit Controller will now operate the economizer. Page 8

133 C-California Title 24 Compliance For California Title 24 compliance, adjust the free cooling setpoint based on: -The climate zone where the unit is installed. See table 4. -The setpoint requirement published by the California Energy Commission. See Section Prescriptive Requirements for Space Conditioning Systems of the 2013 Building Energy Efficiency Standards. Note - Values in the referenced standard will supersede values listed in table 4. SETPOINTS DAMPER ECONOMIZER MODE Use arrows to move PARTIAL VIEW OF UNIT CONTROLLER MENU Use arrows to move TEMP ENTH GLOBAL CON TROL CON TROL! SET! OFF SET OAT STPT DIFF OFFSET ODE STPT XXºF! SET! XXºF! SET! XX.X MA XX.X MA! SET!! SET! SUPPLY AIR STPT XX.XºF [44.9 TO 65.3ºF]! SET! MIN OCP BLOWER LOW XXX% [0 TO 100%}! SET! MIN OCP BLOWER HIGH XXX% [0 TO 100%]! SET! SENSOR LOCATION FIGURE 12 RT17 OUTDOOR AIR SENSOR (SECURED TO INSIDE OF CORNER MULLION) RT16 RETURN AIR SENSOR RT6 DISCHARGE AIR SENSOR FIGURE 13 Page 9

134 TABLE 3 ECONOMIZER MODES AND SETPOINT Free Cooling Mode Free Cooling Setpoint Field- Provided Sensors Dampers will modulate to 55 F discharge air (RT6) when outdoor air is suitable: Permitted Inputs TEMP OFFSET None Needed Outdoor air temperature (RT17) is less than return air temperature (RT16) by at least the OFFSET value F TEMP OAT STPT None Needed Outdoor air temperature (RT17) is less than the OAT STPT value F Remote Remote Energy Management System** Either of the TEMP modes can be used when a network OAS signal is provided by an energy management or building control system, via BACnet, LonTalk, or L Connection. The network can command OAS, NOT OAS, or AUTO. AUTO returns to local control of OAS, which is the selected TEMP mode. NA ENTH DIFF OFFSET (Two) C7400 Outdoor air enthalpy* (A7) is less than return air enthalpy (A62) by at least the OFF SET value. 0mA-4mA ENTH ODE STPT C7400 Outdoor air enthalpy (A7) is less than free cooling setpoint mA GLOBAL GLOBAL 24VAC Input Signal Global input is energized by (P297-9). This setting is also used for outdoor air damper applications. Global input also brings on the blower. (This mode is NOT used when OAS signal is provided via network connection. GLO is only used when a 24VAC signal is used to energize the P297-9 GLO input.) *Enthalpy includes effects of both temperature and humidity. **Energy management system smay require additional field-provided sensors; refer to manufacturer's instructions. NA Climate Zone TABLE 4 FREE COOLING SETPOINT Setpoint (Single Sensible) Setpoint (Differential Sensible) 1, 3, 5, F 0F 2, 4, 10 73F 2F 6, 8, 9 71F 4F 7 69F 6F D-Setting Free Cooling Setpoint in Enthalpy Mode Free Cooling Setpoint - ODE STPT The enthalpy sensor (A7) provides a milliamp signal to the Unit Controller based on outdoor air temperature and humidity. See table 5. To set a free cooling setpoint of 73 F at 50% relative humidity, enter 12 at the ODE STPT menu prompt. The Unit Controller will allow dampers to modulate open at approximately 73 F. If the space temperature is too warm, change the ODE STPT to 13.6 and the Unit Controller will allow dampers to modulate open at approximately 70 F. TABLE 5 FREE COOLING SETPOINT - ODE STPT MODE Enthalpy Setpoint F ( C)* Menu Entry - ma Counts 73 (23) (21) (19) (17) *Approximate temperature at 50% relative humidity. Free Cooling Differential Enthalpy - DIFF OFFSET The Unit Controller allows damper modulation when outdoor air is lower than return air by a differential or offset temperature and humidity range. To set an offset range of 7 F at a constant relative humidity, enter 4 at the DIFF OFFSET menu prompt. If return air is 76 F, the Unit Controller will allow damper to modulate open at approximately 69 F outdoor air. See table 6. If the space temperature is too cool or dry, change the DIFF OFFSET to 3 and the Unit Controller will allow dampers to modulate open at approximately 71 F outdoor air. TABLE 6 FREE COOLING SETPOINT - DIFF OFFSET MODE *Temperature Offset F **Relative Humidity Offset % Menu Entry ma Counts *At a constant relative humidity. **At a constant temperature. E-Damper Minimum Position Setting Use the menu path in figure 12 to set the minimum % open damper position when outdoor air is not suitable for free cooling. The minimum setpoint range is 0% open (dampers closed) to 100% (dampers fully open). On units equipped with a ventilation control board, refer to the VCB Start-Up section in the installation instructions provided with each unit. Page 10

135 Config ID1 POS 2) T T T S D G Unit Controller Input (Mode) Differential Sensible Sensor (default mode) Single Sensible Sensor Network OAS Single Enthalpy* Sensor Differential Enthalpy* Sensor Global M3 Display (Free Cooling Options) ECONOMIZER TEMP ECON TYPE = TEMPERATURE OFFSET ECONOMIZER TEMP ECON TYPE = TEMPERATURE SETPOINT ECONOMIZER TEMP ECON TYPE = TEMPER ATURE OFFSET or SETPOINT ECONOMIZER ENTHALPY SETPOINT = 12.0 MA ECONOMIZER ENTHALPY OFFSET = 1.0 MA Mode and setpoint are not set by Unit Controller. Menu advances to: FREE COOLING SUPPLY AIR SETPOINT = 55 F *Enthalpy includes effects of both temperature and humidity. TABLE 7 FREE COOLING OPTIONS Default Setting Range Setting 10 F 0 F - 40 F 75 F 40 F - 75 F Not Applicable Not Applicable 12.0 ma 10mA - 19 ma 1.0 ma 1 ma - 5 ma Not Applicable Not Applicable Outdoor air is suitable for free cooling when: Outdoor air temperature (RT17) is less than return air temperature (RT16) by at least the offset value. Outdoor air temperature (RT17) is less than the Outdoor Air Temperature set point value. Either of the TEMP modes (set point or offset) can be used when a network OAS signal is provided by an energy management or building control system, via BACnet, LonTalk, or L Connection. The network can command OAS, NOT OAS, or AUTO. AUTO returns to local control of OAS, which is the selected TEMP mode. Outdoor air enthalpy (A7) is less than enthalpy set point parameter. Outdoor air enthalpy* (A7) is less than return air enthalpy (A62) by at least the OFFSET value. Global input is energized by (P297-9). This setting is also used for outdoor air damper applications. Global input also brings on the blower. (This mode is NOT used when OAS signal is provided via network connection. GLO is only used when a 24VAC signal is used to energize the P297-9 GLO input.) Economizer Start-Up - M3 Unit Controller The unit will be equipped with either an M2 or M3 Unit Controller. M2 or M3 will be printed on the bottom of the Unit Controller near the SBUS connector. Use the appropriate start-up section in this manual and refer to the Unit Controller provided with the rooftop unit. Application manuals are available for both Unit Controllers. The economizer is controlled by the Unit Controller which is located on the unit control panel. A detailed menu layout can be found in the Unit Controller manual provided with each unit. A-Field-Installed Economizer The Unit Controller must be set to identify an economizer has been installed. The configuration ID will also identify which sensor inputs the Unit Controller will use to determine the free cooling mode. See figure 13 for sensor location. 1- Use the Unit Controller keypad to enter the following menu: MAIN MENU > SETUP > INSTALL 2- Press SAVE until CONFIGURATION ID 1 appears. Change the second character in the configuration ID to identify the type of input used to determine economizer free cooling setpoint. See table Press SAVE. The Unit Controller is now set up to operate the economizer. 4- Press the MAIN MENU button, then the BACK button, to display the status screen. B-Adjust Free Cooling Discharge Air Setpoint When outdoor air is suitable for free cooling, dampers will modulate to maintain a discharge air temperature of 55ºF default (adjustable range 45º-67ºF). Refer to RT6 discharge air sensor location shown in figure 13. Page 11

136 C-Free Cooling Modes The Unit Controller automatically sets the free cooling mode when the configuration ID is entered. The temperature setpoint mode is the only exception. 1- Use the following menu path on the Unit Controller to enter the temperature setpoint mode. MAIN MENU > SETTINGS > RTU OPTIONS > DAMPER > ECONOMIZER TEMP ECON TYPE = TEMPERATURE OFFSET (default) 2- Use the Adjust and set values arrows on the keypad to select TEMPERATURE SETPT. 3- Press SAVE. Note - Network OAS signal and California Title 24 Compliance options use either TEMPERATURE OFFSET or TEMPERATURE SETPT mode. D-Adjust Outdoor Air Free Cooling Setpoint Note - Configuration ID 1 must be set to the appropriate mode before adjusting the free cooling setpoint. See table 7 Temperature Offset or Temperature Setpoint Mode 1- After the free cooling mode is saved, if default setpoint value needs to change, enter the new number and press SAVE. 2- For California Title 24 compliance, adjust the free cooling setpoint based on: -The climate zone where the unit is installed. See table 4. -The setpoint requirement published by the California Energy Commission. See Section Prescriptive Requirements for Space Conditioning Systems of the 2013 Building Energy Efficiency Standards. Note - Values in the referenced standard will supersede values listed in table When a network OAS signal is provided by a building control system, refer to control system literature to adjust free cooling setpoint. Enthalpy Setpoint The enthalpy sensor (A7) provides a milliamp signal to the Unit Controller based on outdoor air temperature and humidity. Use the following menu to change the setpoint: MAIN MENU > SETTINGS > RTU OPTIONS > DAMPER > ECONOMIZER ENTHALPY SETPOINT = 12.0 MA Refer to table 5. At 12.0mA, the Unit Controller will allow dampers to modulate open at approximately 73 F. If the space temperature is too warm or humid, change the ECONOMIZER ENTHALPY SETPOINT to 13.6MA and the Unit Controller will allow dampers to modulate open at approximately 70 F. Enthalpy Offset The Unit Controller allows damper modulation when outdoor air is lower than return air by a differential or offset temperature and humidity range. Use the following menu to change the setpoint: MAIN MENU > SETTINGS > RTU OPTIONS > DAMPER > ECONOMIZER ENTHALPY OFFSET = 1.0 MA Refer to table 6. At 1.0mA, the Unit Controller will allow dampers to modulate open when outdoor air is lower than return air by approximately a 2 F offset. If return air is 76 F, the Unit Controller will allow dampers to modulate open at approximately 74 F. If the space temperature is to warm or humid, change the ECONOMIZER ENTHALPY SETPOINT to 2.0mA or an offset of 3.5 F. The Unit Controller will allow dampers to modulate open at approximately 72.5 F. E-Damper Minimum Position Setting Use the menu path in table 8 to set the MIN DAMPER POSITION BLOWER ON HIGH when outdoor air is not suitable for free cooling. The minimum setpoint range is 0% open (dampers closed) to 100% (dampers fully open). On units with staged supply air blowers, also set the MIN DAMPER POSITION BLOWER ON LOW. TABLE 8 DAMPER OPTIONS Level 2 Level 3 Level 4 Level 5 RTU OP TION DAMPER ECONOMIZER ENTHALPY OFFSET = 12.0 MA ECONOMIZER ENTHALPY SETPOINT = 1.0 MA ECONOMIZER TEMP ECON TYPE = TEMPERATURE OFFSET OR TEMPERATURE SETPT ECONOMIZER OAT SETPOINT = XX.X F FREE COOLING SUPPLY AIR SETPOINT = 55 F MIN DAMPER POSITION BLOWER ON HIGH = X.X % MIN DAMPER POSITION BLOWER ON LOW = X.X % Note - Menu options vary depending on hardware configuration. Note - Use the Adjust and set values arrows to scroll up or down for selection options. Page 12

137 2009 Lennox Industries Inc. Dallas, Texas, USA CONTROLS KITS AND ACCESSORIES /09 Supersedes M Litho U.S.A. LonTalk MODULE KIT INSTALLATION INSTRUCTIONS FOR LONTALK MODULE KIT (11W28) USED WITH LG/LC/LH & SG/SC AND ENERGENCE ROOFTOP UNITS Table of Contents Application Installation Configuring IMC / M2 Unit Controller Communications Check Out LonWorks Network Connection Network Cable Network Limits Network Integration Data Update Rate Start Up & Normal Unit Operation Zone Sensor Setpoints Inputs to/outputs from IMC / M2 Unit Controller... 8 Alarm Codes NOTE Disregard shipping and packing list and installation sections when module is factory installed. Shipping and Packing List Package 1 of 1 contains: 1 LonTalk module 4 #6 32 X 7/8" Screws 1 Mounting plate (used on S units only) 2 #10 16 X 5/8" Sheet metal screws (used on S units only) 1 3 ft. length SYSBUS cable 1 3 ft. length thermostat wire 1 Wiring diagram Technical Assistance For assistance contact Lennox Technical Support at Version Required This module requires a rooftop unit IMC M1 7 (version 5.02 or higher), M1 8, or M2 Unit Controller. An IMC upgrade kit is available for earlier M1 7 versions. M1 6 and earlier IMC versions cannot be upgraded for use with the LonTalk module. M1 8 displays version when powered up in the scrolling text (may need to clear error codes). For displaying version on M1 7: 1. Locate IMC board in compressor area. Refer to IMC manual provided with rooftop unit. 2. Set the MODE DIP UNIT TEST" and RECALL" switches to ON" (see figure 2). 3. The IMC LEDs will display the current IMC version (see figure 1). 4. Be certain to return the UNIT TEST" and RECALL" switches to OFF" after viewing the version number. Communication to the IMC is interrupted while these MODE DIP switches are ON". Set the MODE DIP UNIT TEST" and RE- CALL" switches to ON". MODE ON UNIT TEST RECALL ECTO TEMP OPT2 SHIFT LED will display current software version. Figure 1. Check M1 7, M1 8 Software Version and Address WARNING Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a qualified installer or service agency. 12/ Page 1

138 LONWORKS NETWORK TRANSMIT LED (L1) LED (L2) NOT USED LONWORKS NETWORK RECEIVE LED (L3) LONWORKS SERVICE PIN LONWORKS NETWORK CONNECTION POWER INDICATION LED SYSTEM READY LED SYSBUS (SBUS) NET- WORK CONNECTION Application SYSBUS + 24VAC HOT COM The LonTalk module allows communication between the Lennox unit controller and a LonWorks network. The module translates input and output variables between Lennox L Connection protocol and the LonWorks network. The LonTalk Module has been developed to communicate with building automation systems. The functional profiles are proprietary in content and will require the integrator to use the datapoint information included in the service manual. Either a Lennox zone sensor or a LonTalk network zone sensor is required to send the zone temperature to the unit controller. Installation WARNING Electric shock hazard. Can cause injury or death. Before attempting to perform any service or maintenance, turn the electrical power to unit OFF at disconnect switch(es). Unit may have multiple power supplies. CAUTION Danger of sharp metallic edges. Can cause injury. Take care when servicing unit to avoid accidental contact with sharp edges. 1. Disconnect all electrical power to unit. Figure 2. LonTalk Module 24VAC POWER CONNEC- TION MOUNTING HOLES (4) 2. Open compressor section access doors. 3. Begin installation depending on unit size as follows: A Box ( units)position the LonTalk module in the compressor section as shown in figure 3. Secure with four #6 screws. B, C, & D Box (150/360 units)position the mounting plate in the location shown in figure 5. Secure with 7/8" screws. Install the LonTalk module on the mounting plate and secure with #6 screws. E Box (420/600 units)position the mounting plate beneath the IMC board as shown in figure 4. Secure with four #6 screws. 4. Route the SYSBUS network cable to the IMC SYS- BUS terminal block. Secure network cable away from all power cables. Connect the cable shield drain wire to the G" terminal on the controller. Do not connect the cable shield drain wire to the LonTalk module (see figure 6). 5. For M1 7, M1 8Locate the thermostat wire provided in this kit. Connect one wire between the LonTalk module 24v. hot and the rooftop unit TB1 terminal 6. Connect the other wire between the LonTalk module common and the rooftop unit TB1 terminal 7. See wiring diagram provided in this kit or on the inside of the compressor access panel. 5. For M2Connect power leads to gray COM (24VAC return) and the red 24VAC service wire terminals. 6. If module is field installed, locate the temperature control wiring diagram sticker on the inside of the compressor access panel. Affix the C68 temperature control wiring diagram (provided in this kit) over the existing diagram. Page 2

139 S Class E Box A55 LONTALK MODULE LONTALK MODULE Figure 3. LonTalk Module ( units, A box) Figure 4. LonTalk Module (420/600 units, E Box) ALIGN DIMPLES IN UNIT MULLION WITH ENGAGING HOLE IN MOUNTING PLATE FLANGE; SECURE WITH 5/8" SHEET METAL SCREW. MOUNTING PLATE IMC / M2 BOARD LONTALK MODULE POSITION HOLE IN MOUNTING PLATE FLANGE OVER IMC BOARD HAT SECTION SCREW IMC / M2 BOARD HAT SECTION Figure 5. LonTalk Module (150/360 units (B, C, & D box) Page 3

140 NETWORK LED BACnet Listed TRANSMIT LED A147 1/2" MOUNTING STANDOFF (4). USE #6 SCREWS TO SECURE. M2 UNIT CONTROLLER DETAIL A TB63 M2 Unit Controller TB61 SYSBUS + TB62 24VAC HOT COM LONWORKS NETWORK BELDEN 8471 OR EQUIVALENT TWISTED PAIR CABLE NETWORK LED IMC M1 7. M1 8 Integrated Modular Controller BUS TX TRANSMIT LED UNIT ADDRESS DIP SWITCH M1 7, M1 8 IMC DETAIL B SHIELD WIRE NOT CONNECTED COMMUNICATION CABLE (TWISTED PAIR) TB1 7 (M1) J2 (M2) TB1 6 (M1) J18 (M2) Zone Sensor Installation The unit controller is factory set in local thermostat system mode. In this mode the unit will respond to standard 24 VAC thermostat signals that are hardwired to the unit TB1 field wiring terminal block (M1) or SmartWire connections (M2). For LonWorks network installations the unit controller uses a local zone sensor or a remote LonTalk thermostat zone sensor to operate the unit instead of a local thermostat. Install the sensor according to manufacturer s instructions. NOTE Lennox zone sensor requires twisted pair shielded cable. NOTE LonTalk zone sensor must be commissioned according to manufacturer s instructions. Figure 6. LonTALK Module Wiring Configuring the Unit Controller Settings: M1 Controllers Use the IMC pushbutton and DIP switches to manually adjust the following control parameters (see IMC manual). A PC can also be used with Unit Controller software and a PC converter. Lennox Zone Sensor Installed: 1. Set ECTO 6.01 to option 3 (zone sensor system mode with return air sensor back up). 2. Set ECTO 6.17 to option 1 (continuous blower during occupied). 3. Set ECTO as specified (back up occupied and unoccupied heating and cooling setpoints). Page 4

141 LonTalk Zone Sensor Installed: 1. Set ECTO 6.01 to option 3 (zone sensor system mode with return air temperature back up). 2. Set ECTO 6.17 to option 1 (continuous blower during occupied). 3. Set ECTO 5.27 to option 2 (network zone sensor option). IMC Settings: 1. Be sure the occupied 24 VAC input is energized by adding a jumper wire between TB1 8 and 9. In the event that communication is lost between the LonTalk module and the IMC, the IMC will operate in the occupied mode and use the occupied backup setpoints. 2. Change IMC UNIT ADDRESS DIP switch to 2 (see figure 7). SETTINGS CONTROL LONTALK Use arrows to move CONTROL MODE BACKUP SENSOR OCP HEAT BU STPT UNOCP HEAT BU STPT OCP COOL BU STPT UNOCP COOL BU STPT STARTUP DELAY (2 30) MONITOR ONLY ZONE 1. NO BACKUP 2. TSTAT 3. RET AIR SENSOR 70.0ºF 60.0ºF 75.0ºF 85.0ºF 2 MIN OVERRIDE TIMER (0 8HR) 1 HR SET THE ADDRESS DIP SWITCH TO =2 Figure 7. Address DIP Switch Settings: M2 Controllers On the M2 Unit Controller, select SETTINGS > CONTROL > L CONN as shown in the following diagram; default setting for ADDR (address) is 2. Confirm the address and change if necessary. SETTINGS CONTROL L CONN ADDR:02 On the M2 Unit Controller, select SETTINGS > CONTROL > LONTALK as shown in the following diagram; default settings will be used. You may adjust those settings to suit the building s requirements. The following diagram shows the LONTALK menu s structure and how to make changes. BLOWER ON OCP NETWORK COMFORT SENSOR CYCLES OR CONTINUOUS Communication Check Out LonTalk Module Communication Use the following table as a guide once the controller and LonTalk Module are connected and powered (LEDs are shown in Details A and B in figure 6). LED BUS and XMIT LEDs flash. BUS and XMIT LEDs are off. BUS LED flashes but XMIT LED is off. Action None. Indicates normal communication. 1 Check cable connection between the modules. 2 Reverse polarity of the cable between the and LonTalk Module. 3 Check 24VAC power to LonTalk module. 1 Make sure unit address is set to 2. 2 Make sure MODE DIP RECALL switch is OFF. (M1 controllers only) 3 Make sure MODE DIP ECTO switch is OFF. (M1 controllers only) 4 Make sure MODE DIP UNIT TEST switch is OFF. (M1 controllers only) LonWorks Network Communication Use the following table as a guide once the LonWorks network is set up and operating. LED LonWorks communication LEDs L1 & L3 flash. LonWorks communication LED L1 & L3 are off. Action None. Indicates normal communication. 1 Check LonWorks network connections. 2 Make sure LonWorks network is commissioned. 3 Make sure 24 volts is connected to the LonWorks module. Page 5

142 LonWorks Network Connection The LonTalk module has an FTT 10A Free Topology Transceiver for network communication. The FTT 10A transceiver network supports free topology wiring and will accommodate bus, star, loop, or any combination of these topologies. The module can be located at any point along the network wiring. This capability simplifies system installation and makes it easier to add nodes when required. LonWorks Network Cable The LonWorks TP/FT 10 network requires Echelon qualified twisted pair communication cables such as Belden 8471 or NEMA Level 4 cables. Other Echelon approved equivalent cables may also be used depending on the application. The Belden 8471 or NEMA Level 4 cables are rated for plenum use. The network cable should be routed using best practices to avoid induced noise. Do not route alongside power lines, or in proximity to high voltage or high frequency devices, such as ignition controls and variable frequency drives. The average temperature of the wire must not exceed 131 F (55 C). Network Limits (Free Topology) The LonWorks TP/FT 10 free topology network is limited to a maximum of 64 nodes per segment. The maximum total bus length and the maximum node to node length is 1640 ft. (500m) for Belden 8471 or NEMA Level 4. Maximum lengths are less for other smaller wire size cables. Only one termination circuit module is required at any location along the network. Refer to Echelon LonWorks FTT 10 Transceiver User s Guide for additional details. Free Topology Networks Free topology segments require a termination circuit for proper performance. Only one termination circuit module is required at any location along the network (see figure 8). Network Limits (Doubly Terminated Topology) The LonWorks TP/FT 10 Doubly Terminated topology network is limited to a maximum of 64 nodes per segment. The maximum total bus length is 5000 ft. (1524m) for Belden 8471 or NEMA Level 4. Maximum bus lengths are less for other smaller wire size cables. The maximum stub length is 9.8 ft. (3m). In many cases this bus network is connected in a daisy chain manner where the bus is wired directly to each node, so stub length is zero. Two termination circuit modules (37X75) are required for each segment. One must be located at each end of the network (see figure 9). Termination LOOP TOPOLOGY STAR TOPOLOGY Termination MIXED TOPOLOGY (SINGLY TERMINATED) Termination Figure 8. Free Topology Networks Termination Termination Figure 9. Doubly-Terminated Topology Page 6

143 Network Integration A network configurating tool such as LonMaker is required to commission the LonWorks network. Press the service button on the LonTalk module to generate a service message that contains the Neuron ID and all information required to connect it to a system and to configure the module. Other commissioning methods may be used. The Neuron address is located on the Lontalk module. An external Interface File (XIF) is available for configuration prior to installation. The Lontalk module only supports service type acknowledged service. For Tridium/JACE integration, this is equivalent to critical binding on all variables. Data Update Rate If a LonTalk Zone Sensor is installed (ECTO 5.27 for M1 controllers), the nvispacetemp point must be updated periodically. If nvispacetemp is not updated for a period of 5 minutes, the IMC will go into the back up modes described in the Lontalk Connection Failure" section: It is highly recommended that the nvispacetemp variable, if it is used, be updated at least every 2 minutes. Start Up Operation (Before LonWorks Network is Commissioned) Lennox Zone Sensor InstalledPrior to commissioning, no LonWorks setpoint is available. The unit will be off. Two minutes after power up (ECTO 5.25), the IMC will operate the unit based on the IMC ECTO unoccupied backup setpoints (heating = 60 F, cooling = 85 F) and current zone temperature read by the Lennox zone sensor. LonTalk Zone Sensor InstalledPrior to commissioning, neither LonWorks setpoint nor sensor data are available. The unit will be off. Five minutes after power up, the controller will operate the unit based on the unoccupied backup setpoints (heating = 60 F, cooling = 85 F) and the current zone temperature read by an additional Lennox zone sensor if installed. If the Lennox zone sensor is not installed, the return air temperature sensor is used as backup (ECTO 6.01). Normal Operation (After LonWorks Network is Commissioned) The occupancy of the space can be determined using any combination of the following control points: LonWorks Network scheduling Manual override Space occupancy sensor Lennox Zone Sensor InstalledThe unit is off for up to two minutes after power up (ECTO 5.25) unless the Lon- Works Network sends a setpoint. The unit will operate based on this setpoint and the temperature from the Lennox zone sensor. In addition to control points, space occupancy can be manually overridden using a Lennox zone sensor equipped with an optional after hours switch. LonTalk Zone Sensor InstalledThe unit is off for up to five minutes after power up unless the LonWorks Network sends a setpoint and LonTalk zone sensor data. The unit will operate based on this setpoint and temperature data. Zone Sensor Setpoints The unit controller typically uses four setpoints and the zone temperature to operate the unit when a zone sensor is installed. Because the LonTalk network provides a single setpoint input, the unit controller will use the zone temperature and deadband setpoint (ECTO 6.15) to determine the setpoint in the occupied mode. During the unoccupied mode, the unit controller will use the zone temperature and the difference between unoccupied heating and cooling setpoints. See figure 10 for an example of setpoints when the unit controller is operating in default mode. 95 F Cooling Maximum Setpoint Unocc. Cooling Setpoint 82.5 F Occ. Cooling Setpoint 71.5 F LonTalk Network (nvisetpoint + nvisetptoffset) 70 F 3 F (ECTO 6.15) Autochangeover deadband 25 F (ECTO ) Difference between unoccupied heating and cooling backup setpoints F Occ. Heating Setpoint 40 F Heating Minimum Setpoint 57.5 F Unocc. Heating Setpoint Figure 10. Unit Controller Default Setpoint Example (Zone Sensor Installed) Page 7

144 Connection Failure Control following a connection failure depends on where the failure occurs, and which input device has been used. Between Unit Controller and LonTalk Module LonWorks Network Lennox Zone Sensor 1 2 During the 5 minutes following a failure, the unit controller cycles on last setpoint. Unit controller resets. No heating or cooling during 2 minutes (ECTO 5.25) following reset. 1 Unit controller cycles on last setpoint. 2 Last occupancy input is used. 3 Unit controller cycles based on ECTO backup setpoints. 4 Occupancy is determined by hardware input at TB1 ( for M1), or Prodigy setup (for M2). LonTalk Zone Sensor During 5 minutes following failure, the unit controller continues current operation: heat, cool, or off. Unit controller resets. No heating or cooling during 5 minutes following reset. Unit controller uses ECTO backup setpoints. Unit controller attempts to use Lennox zone sensor as backup. If this fails, Unit controller uses return air sensor backup. Occupancy is determined by hardware input at TB1 ( for M1), or Prodigy setup (for M2). 1 During 5 minutes following failure, Unit controller continues current operation: heat, cool, or off. 2 Unit controller uses ECTO backup setpoints. 3 Unit controller attempts to use Lennox zone sensor as backup. If this fails, Unit controller uses return air sensor backup. 4 Last occupancy input is used. Network Variables See BACnet Module Service Literature. Alarm Codes See the Unit Controller user guide for a list of alarm codes. Page 8

145 CONTROLS KITS AND ACCESSORIES Litho U.S.A /2014 Supersedes 5/2014 Prodigy LonTalk MODULE KIT INSTALLATION INSTRUCTIONS FOR LONTALK MODULE KIT (54W27) USED WITH ENERGENCE ROOFTOP UNITS WARNING Improper installation, adjustment, alteration, service or maintenance can cause personal injury, loss of life, or damage to property. Installation and service must be performed by a licensed professional installer (or equivalent) or a service agency. ELECTROSTATIC DISCHARGE (ESD) Precautions and Procedures CAUTION Electrostatic discharge can affect electronic components. Take precautions during unit installation and service to protect the unit's electronic controls. Precautions will help to avoid control exposure to electrostaticdischargebyputtingthe unit, the control and the technician at the same electrostatic potential. Neutralize electrostatic charge by touching hand and all tools on an unpainted unit surface before performing any service procedure TABLE OF CONTENTS General... 1 Installation... 1 Operation and Functional Description... 3 Network Configuration Parameter Implementation. 14 Appendix A Supply Airflow Targets Appendix B LonTalk Occupancy Signals and Blower Operation General PRODUCT NAME LonTalk Control Kit, COCTRL65FF1 - Cat No. 54W27. VERSION REQUIRED This module requires either the Prodigy M2 Unit Controller version 7.07 or higher or Prodigy 2.0 M3 Unit controller. The LonTalk module allows communication between the Lennox Prodigy or Prodigy 2.0 unit controller and a LonWorks network. The module is LonMark certified to design guidelines version 3.4. TECHNICAL ASSISTANCE For assistance, contact Lennox Technical Support at Installation NOTE - a small flat-head screw driver is required to connect the communication wire to the SmartWire connector. 1. Remove power to the unit. 2. Open the compressor access doors. 3. Plug the LonTalk module (see LonTalk module in figure 1) onto the M2 or M3 Unit Controller. Guide pins will align the module with the M2 or M3 unit controller connector. 4. Connect the LonTalk SmartWire connector as shown in figures 1 or 2. M2 UNIT CONTROLLER This controller will automatically recognize the LonTalk module and begin communications provided the network has been correctly configured. To configure the LonTalk network, go to: SETTINGS > CONTROL = LONTALK M3 UNIT CONTROLLER To enable the LonTalk module, go to: 1. SETUP > INSTALL and run the setup wizard. When Configuration ID 1 appears on the screen, configure position 5 as L. 2. To configure the LonTalk Network, go to: SETUP > NETWORK INTEGRATION = LONTALK Page 1

146 LonTalk MODULE Figure 1. LonTalk Control Module Installed on Prodigy M2 Unit Controller NO DEMAND - OAS ZAT: 56.0F DAT: 75.0F UNOCC LonTalk MODULE Figure 2. LonTalk Control Module Installed on Prodigy 2.0 M3 Unit Controller Page 2