Envision Commercial Tons Installation Manual

Transcription

1 OMMEIAL Geothermal/Water Source Heat Pump -0A efrigerant 0.- Tons Single Speed - Tons Dual apacity Installation Informationon Water Piping onnections Hot Water onnectionsons Electrical Startup Procedures Troubleshooting Preventive Maintenancence Envision ommercial 0.- Tons Installation Manual IM00AN 0/

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3 Table of ontents Model Nomenclature General Installation Information Vertical Dimensional Data Horizontal Dimensional Data Installing Horizontal Units Hanger Bracket Locations Duct System and Water Piping Water Quality and ondensate Drain System leaning and Flushing Open Loop Ground Water Systems Hot Water onnections Freeze Detection Electrical onnections Electronic Thermostat Installation Auxiliary Heat atings Electrical Data Blower Performance Data and Setting Blower Speed Wiring Schematics Envision ontrols - Premier Troubleshooting Envision ontrols - FX0 (optional) Unit Startup Operating Limits Operating Parameters Pressure Drop ompressor and Thermistor esistance efrigerant ircuit Guidelines eference alculations and Legend Heat of Extraction/ejection Data Startup/Troubleshooting Form Preventive Maintenance and eplacement Procedures Service Parts evision Guide

4 Model Nomenclature - NS V - 0 T L N B N N -9 SS 0 A Model Type NS = Single Speed ND = Dual apacity Vintage = Painted abinet D = Unpainted abinet abinet onfiguration H = Horizontal V = Vertical Unit apacity Single Speed: 009, 0, 0, 0, 0, 00 0, 0, 0, 00, 00 Dual apacity: 0, 0, 09, 0, 0 abinet onfiguration T = Vertical Top Discharge E = Horizontal End Discharge S = Horizontal Side Discharge B = Vertical Bottom Discharge (0-0) = Vertical ear Discharge (0-0) eturn Air onfiguration L = Left = ight Voltage 0 = 0-0/0/ = -/0/ (009-0) = 0-0/0/ (0, 0-0) = 0/0/ (0, 0-0) = /0/ (0, 0, 00, 00, PS only) Hot Water Options 0 = No Hot Water Generator, No IntelliStart TM = Hot Water Generator, without pump, No IntelliStart, (0-0) = No Hot Water Generator, IntelliStart (0-0) = Hot Water Generator, without pump, IntelliStart,, (0-0) Blower Options 0 = PS Blower = Variable Speed EM Blower (0-0) = High Static Variable Speed EM Blower Option (0, 0, 0, 0, 09) = High Static PS Blower Option (0, 00, 0, 0, 0) Non-Standard Option Details SS = Standard Option QP = in. MEV Filter SF = Stainless Steel Drain Pan SG = in. MEV Filter with Stainless Steel Drain Pan Air oil/insulation Options = FormiShield/Extended ange = FormiShield/Standard ange = No oating/extended ange = No oating/standard ange ontrol Options = Premier Microprocessor = FX0 std. no communication = FX0 w/open N om ard = FX0 w/lonworks om ard = FX0 w/bacnet om ard Water ontrol N = None = Water Flow egulator ( gpm/ton) V = -Way Valve P = Internal Pump (Secondary pumping) B = -Way Valve w/water Flow egulator Hot Gas Bypass/eheat N = None G = Hot Gas Bypass (0-0) = Hot Gas eheat (0-0) B = Hot Gas Bypass w/hot Gas eheat (0-0) Sound Kit A = None B = Sound Kit oax Options = opper N = upronickel ev.: 09 January 0D NOTES: Not available with Hot Gas eheat Only on 0-0/0/ Field installed external pump kit (DPK or DPK) required for hot water generation Not available on dual capacity models

5 General Installation Information Safety onsiderations WANING: Before performing service or maintenance operations on a system, turn off main power switches to the indoor unit. If applicable, turn off the accessory heater power switch. Electrical shock could cause personal injury. Installing and servicing heating and air conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair or service heating and air conditioning equipment. Untrained personnel can perform the basic maintenance functions of cleaning coils and cleaning and replacing filters. All other operations should be performed by trained service personnel. When working on heating and air conditioning equipment, observe precautions in the literature, tags and labels attached to the unit and other safety precautions that may apply. Follow all safety codes. Wear safety glasses and work gloves. Use a quenching cloth for brazing operations and have a fire extinguisher available. Moving and Storage Move units in the normal up orientation. Horizontal units may be moved and stored per the information on the packaging. Do not stack more than three units in total height. Vertical units may be stored one upon another to a maximum height of two units. Do not attempt to move units while stacked. When the equipment is received, all items should be carefully checked against the bill of lading to be sure all crates and cartons have been received. Examine units for shipping damage, removing the units from the packaging if necessary. Units in question should also be internally inspected. If any damage is noted, the carrier should make the proper notation on the delivery receipt, acknowledging the damage. Unit Location Locate the unit in an indoor area that allows for easy removal of the filter and access panels. Location should have enough space for service personnel to perform maintenance or repair. Provide sufficient room to make water, electrical and duct connection(s). If the unit is located in a confined space, such as a closet, provisions must be made for return air to freely enter the space by means of a louvered door, etc. Any access panel screws that would be difficult to remove after the unit is installed should be removed prior to setting the unit. On horizontal units, allow adequate room below the unit for a condensate drain trap and do not locate the unit above supply piping. are should be taken when units are located in unconditioned spaces to prevent damage from frozen water lines and excessive heat that could damage electrical components. Installing Vertical Units Prior to setting the unit in place, remove and discard the compressor hold down shipping bolt located at the front of the compressor mounting bracket. Vertical units are available in left or right air return configurations. Top flow vertical units should be mounted level on a vibration absorbing pad slightly larger than the base to provide isolation between the unit and the floor. It is not necessary to anchor the unit to the floor (see right). Bottom flow units should be mounted level and sealed well to floor to prevent air leakage. Bottom flow units require the supply air opening to be cut at least / in. larger than the unit s air outlet. Protect the edges of combustible flooring with sheet metal over-wrap or other noncombustible material. Figure : Vertical Unit Mounting Extruded Polystyrene

6 Vertical Dimensional Data Top Air Discharge LEFT ETUN Field Installed Duct Flange Legend AP = Alternate Service Panel BP = Blower Service Panel P = ontrol Access Panel MP = ompressor Service Panel AI OIL L Filter ack Width Access Panels B B N O O N [cm] Alternate Service Access Left eturn (ight eturn opposite side) BP AP A M Q FONT AI OIL SIDE AI OIL SIDE FONT M A P MP P AP [cm] Service Access Left eturn (ight eturn opposite side) TOP VIEW - IGHT ETUN TOP VIEW - LEFT ETUN [cm] Service Access S S.00 (. mm) U U FILTE AK ONNETION AI OIL FILTE AK ONNETION BP T T FONT. (. cm) AP BAK BAK MP IGHT VIEW - IGHT ETUN LEFT VIEW - LEFT ETUN FONT VIEW FONT POWE SUPPLY / (9. mm) KNOKOUT LOW VOLTAGE / (. mm) KNOKOUT MP I J K P. (. cm) ONDENSATE /" PV GLUE SOKET F G H E D Vertical Models A Width Overall abinet B Depth Height* Water onnections I F G H / cond D E Loop HWG HWG HWG ond- Low In Out Water FPT FPT In Out ensate Voltage Electrical Knockouts J / cond Ext Pump K / cond Power Supply L Filter ack Width Discharge onnection duct flange installed (±0.0 in) M Supply Width N Supply Depth O P Q eturn onnection using std deluxe filter rack (±0.0 in) in /" /" cm mm. mm in /" /" cm mm. mm in /" /" cm mm. mm in " /" cm mm. mm ondensate is / in. PV female glue socket and is switchable from front to side. 0//0 Vertical unit shipped with deluxe in. (field adjustable to in.) duct collar/filter rack extending from unit. in. and is suitable for duct connection. Discharge flange is field installed and extends in. [. mm] from cabinet. S eturn Depth T eturn Height U

7 Vertical Dimensional Data cont. Bottomflow LEFT ETUN IGHT ETUN MP AP.0 (. cm) P MP P FILTE AK ONNETION S S FILTE AK ONNETION T T K J I BP D E F G AP BP B LEFT SIDE Q B IGHT SIDE Q.90 (. cm) Optional [cm] Service Access ight eturn (Opposite Side for Left eturn) [cm] Service Access L O N L A FONT H M N LEFT BOTTOM DISHAGE FLOO FOOT PINT O IGHT BOTTOM DISHAGE FLOO FOOT PINT P Legend AP =Alternate Service Panel BP =Blower Service Panel P =ontrol Access Panel MP=ompressor Service Panel Bottomflow Models Overall abinet Water onnections Electrical Knockouts Discharge onnection I K duct flange installed (±0.0 in) J F G H Loop / cond / cond / cond N O B D E HWG HWG HWG ondensate FPT Voltage Supply Width Water Low Power Depth Height In Out Ext Pump L M Supply Supply FPT In Out Depth A Width P eturn onnection using std deluxe filter rack (±0.0 in) in /" /" cm mm. mm in " /" cm mm. mm ondensate is / in. PV female glue socket and is switchable from side to front. 0//0 Vertical bottomflow unit shipped with deluxe in. (field adjustable to in.) duct collar/filter rack extending from unit. in. and is suitable for duct connection. 0-0 bottomflow units use 0 in. x in. air filter. Q eturn Depth S eturn Height T

8 Vertical Dimensional Data cont. ear Air Discharge BP AI OIL Legend AP = Alternate Service Panel BP = Blower Service Panel P = ontrol Access Panel MP = ompressor Service Panel BP AP. Power Supply /" (9. mm) HV Knockout K J I /" (. mm) LV Knockout P FONT VIEW ight eturn D E H F G ft [cm] Service Access Points Primary P AP Secondary B.00 S L Q A A P.00 L B S U U N N T FILTE AK ONNETION M M FILTE AK ONNETION T FONT H. AP AI OIL O O AI OIL Power Supply /" (9. mm) HV Knockout /" (. mm) LV Knockout FONT J K MP I SIDE VIEW ight eturn EA VIEW ight eturn EA VIEW Left eturn SIDE VIEW Left eturn Vertical Models Overall abinet Water onnections Electrical Knockouts I J K Loop / / / F G H HWG B D E Water cond cond cond HWG HWG ond- FPT Depth Height* In Out FPT Low Ext Power In Out ensate Voltage Pump Supply A Width 0- in /" /". 0.. N/A cm mm. mm.0.. N/A in " /" cm mm. mm ondensate is / in. PV female glue socket and is switchable from side to front. 0//0 Vertical unit shipped with deluxe in. (field adjustable to in.) duct collar/filter rack extending from unit. in. and is suitable for duct connection. Discharge flange is field installed and extends in. [. mm] from cabinet. KK / cond Power Supply L Filter ack Width Discharge onnection duct flange installed (±0.0 in) M Supply Width N Supply Depth O P Q eturn onnection using std deluxe filter rack (±0.0 in) S eturn Depth T eturn Height U

9 Horizontal Dimensional Data IGHT ETUN Optional [cm] Service Access AP FONT Legend AP = Alternate Service Panel BP = Blower Service Panel P = ontrol Access Panel MP = ompressor Service Panel FONT MP Optional [cm] Service Access LEFT ETUN [. cm] MP ft [cm] Service Access AP [. cm] Optional [cm] Service Access H POWE SUPPLY /" KNOKOUT.9(. cm).9(. cm) H ONDENSATE LOW VOLTAGE /" KNOKOUT ONDENSATE END DISHAGE SIDE DISHAGE P SIDE DISHAGE END DISHAGE K F G J I E D LOW VOLTAGE A /" KNOKOUT.9 (. cm) N O BP FONT VIEW L O N.9(. cm) H Filter ack Air oil Side Blower Outlet M L M Blower Outlet Air oil Side Filter ack H. (. cm) A BP A. (. cm) IGHT ETUN END DISHAGE LEFT ETUN END DISHAGE L BP M Blower Outlet MP FONT FONT AP Blower Outlet M BP L P N IGHT ETUN SIDE DISHAGE LEFT ETUN SIDE DISHAGE N P Q S T T S Q.(. cm) FONT AP FILTE AK ONNETION FILTE AK ONNETION MP FONT IGHT ETUN IGHT VIEW B AI OIL AI OIL B LEFT ETUN LEFT VIEW NOTE: *Only models require four () hangers. Horizontal Models A Width Overall abinet B Depth Height* Water onnections Electrical Knockouts Discharge onnection I K duct flange installed (±0.0 in) J F G H Loop / cond / cond / cond M N D E HWG HWG HWG ond- Water Low Power In Out Ext Pump L Supply Supply O P FPT In Out ensate FPT Voltage Supply Height Depth eturn onnection ondensate using std deluxe filter rack (±0.0 in) Q eturn Depth eturn Height S T PV Size in /" /" /" cm mm. mm mm in /" /" /" cm mm. mm mm in /" /" /" cm mm. mm mm in " /" /" cm mm. mm mm in " /" /" cm mm. mm mm in " /" /" cm mm. mm mm Horizontal unit shipped with deluxe in. (field adjustable to in.) duct collar/filter rack extending from unit. in. and 0//0 is suitable for duct connection. 9

10 Installing Horizontal Units emove and discard the compressor hold down shipping bolt located at the front of the compressor mounting bracket prior to setting the unit in place. Horizontal units are available with side or end discharge. NOTES: ) Left (ight) eturn Side Discharge cannot be converted to Left (ight) eturn End Discharge or vice versa, without additional custom sheet metal parts. Horizontal units are normally suspended from a ceiling by four ( models) or six (0-0 models) / in. diameter threaded rods. The rods are usually attached to the unit by hanger bracket kits furnished with each unit. ) In some applications, it is difficult to service the filter with the central hanger bracket, located near the air coil, installed. In these instances, it is permissible to suspend the unit with the five remaining hanger brackets. Lay out the threaded rods per the dimensions below. Assemble the hangers to the unit as shown. Securely tighten the brackets to the unit using the weld nuts located on the underside of the bottom panel. When attaching the hanger rods to the bracket, a double nut is required since vibration could loosen a single nut. To allow filter access, one bracket on the filter side should be installed 0 from the position shown in the figure below. The unit should be pitched approximately / in. towards the drain in both directions to facilitate the removal of condensate. Use only the bolts provided in the kit to attach hanger brackets. The use of longer bolts could damage internal parts. Some applications require the installation of horizontal units on an attic floor. In this case, the unit should be set in a full size secondary drain pan on top of a vibration absorbing pad. The secondary drain pan prevents possible condensate overflow or water leakage damage to the ceiling. The secondary drain pan is usually placed on a plywood base isolated from the ceiling joists by additional layers of vibration absorbing material. AUTION: Do not use rods smaller than /-inch diameter since they may not be strong enough to support the unit. The rods must be securely anchored to the ceiling. Figure : Horizontal Unit Mounting Flexible Duct ollar Insulate supply plenum and use O at least one 90 elbow to reduce noise Threaded ods To Line Power Hanging Brackets (Included) Hose Kits To Thermostat Electrical Disconnect Line Voltage Building Water Loop Ball Valves 0

11 Hanger Bracket Locations Figure : Hanger Location and Assembly Hanger Dimensions Single Speed Dual apacity Model Hanger Kit Part Number Unit Hanger Dimensions A B D in.... n/a 99S00A0 cm.... n/a in.... n/a 99S00A0 cm.... n/a in.... n/a 99S00A0 cm n/a in S00A0 cm in S00A0 cm in S00A0 cm in.... n/a 99S00A0 cm n/a in S00A0 cm in S00A0 cm in S00A0 cm in S00A0 cm //0 Weight Distribution Table Single Speed Model Vertical Shipping Weight Horizontal Shipping Weight Horizontal Weight Distribution Front Back [9] [] [] [0] [0] [] 0 0 [] [] [] [0] [0] [] [9] [9] [] [9] [] [] [00] [00] [] [0] [] [] 0 0 [] [] [] [9] [9] [] [9] [] [9] [9] [] [] [9] [] [0] [] [] [] [] [0] [0] [] [] [] 0 [9] [99] [] [] [] [0] 00 [0] [] [] [] [0] [] [] [] [0] [9] [] [] 0 0 [] [] [] [] [] [0] [] [] [] [] [] [] 09 [9] [99] [] [] [] [0] 0 0 [] [9] [] [] [] [] [] [] [0] [9] [] [] Weights are listed in lbs. [kg] // Dual apacity

12 Duct System An air outlet collar is provided on vertical top flow units and all horizontal units to facilitate a duct connection (vertical bottom flow units have no collar). A flexible connector is recommended for discharge and return air duct connections on metal duct systems. Uninsulated duct should be insulated with a minimum of in. duct insulation. Application of the unit to uninsulated ductwork in an unconditioned space is not recommended as the unit s performance will be adversely affected. If the unit is connected to existing ductwork, check the duct system to ensure that it has the capacity to accommodate the air required for the unit application. If the duct is too small, as in the replacement of heating only systems, larger ductwork should be installed. All existing ductwork should be checked for leaks and repaired if necessary. The duct system should be sized to handle the design airflow quietly and efficiently. To maximize sound attenuation of the unit blower, the supply and return plenums should include an internal duct liner of fiberglass or constructed of ductboard for the first few feet. On systems employing a sheet metal duct system, canvas connectors should be used between the unit and the ductwork. If air noise or excessive airflow is a problem, the blower speed can be changed. AUTION: Be sure to remove the shipping material from the blower discharge before connecting ductwork. Water Piping The proper water flow must be provided to each unit whenever the unit operates. To assure proper flow, use pressure/temperature ports to determine the flow rate. These ports should be located at the supply and return water connections on the unit. The proper flow rate cannot be accurately set without measuring the water pressure drop through the refrigerant-to-water heat exchanger. All source water connections on commercial units are fittings that accept a male pipe thread (MPT). Insert the connectors by hand, then tighten the fitting with a wrench to provide a leakproof joint. When connecting to an open loop (groundwater) system, thread any copper MPT fitting into the connector and tighten in the same manner as described above. In ground water situations where scaling could be heavy or where biological growth such as iron bacteria will be present, a closed loop system is recommended. The heat exchanger coils in ground water systems may, over a period of time, lose heat exchange capabilities due to a buildup of mineral deposits inside. These can be cleaned, but only by a qualified service mechanic, as special solutions and pumping equipment are required. Desuperheater coils can likewise become scaled and possibly plugged. In areas with extremely hard water, the owner should be informed that the heat exchanger may require occasional flushing. Units with cupronickel heat exchangers are recommended for open loop applications due to the increased resistance to build-up and corrosion, along with reduced wear caused by acid cleaning.

13 Water Quality In ground water situations where scaling could be heavy or where biological growth such as iron bacteria will be present, a closed loop system is recommended. The heat exchanger coils in ground water systems may, over a period of time, lose heat exchange capabilities due to a buildup of mineral deposits inside. These can be cleaned, but only by a qualified service mechanic, as special solutions and pumping equipment are required. Hot water generator coils can likewise become scaled and possibly plugged. In areas with extremely hard water, the owner should be informed that the heat exchanger may require occasional flushing. Failure to adhere to the guidelines in the water quality table could result in loss of warranty. Units with cupronickel heat exchangers are recommended for open loop applications due to the increased resistance to build-up and corrosion, along with reduced wear caused by acid cleaning. Material opper 90/0 upronickel Stainless Steel ph Acidity/Alkalinity Scaling alcium and (Total Hardness) (Total Hardness) (Total Hardness) Magnesium arbonate less than 0 ppm less than 0 ppm less than 0 ppm Hydrogen Sulfide Less than 0. ppm (rotten egg smell appears at 0. ppm) 0-0 ppm Less than ppm Sulfates Less than ppm Less than ppm Less than 00 ppm hlorine Less than 0. ppm Less than 0. ppm Less than 0. ppm hlorides Less than 0 ppm Less than ppm Less than 00 ppm arbon Dioxide Less than 0 ppm 0-0 ppm 0-0 ppm orrosion Ammonia Less than ppm Less than ppm Less than 0 ppm Ammonia hloride Less than 0. ppm Less than 0. ppm Less than 0. ppm Ammonia Nitrate Less than 0. ppm Less than 0. ppm Less than 0. ppm Ammonia Hydroxide Less than 0. ppm Less than 0. ppm Less than 0. ppm Ammonia Sulfate Less than 0. ppm Less than 0. ppm Less than 0. ppm Total Dissolved Solids (TDS) Less than 000 ppm ppm ppm LSI Index +0. to to to -0. Iron, FE + (Ferrous) Iron Fouling Bacterial Iron Potential < 0. ppm < 0. ppm < 0. ppm (Biological Growth) Less than ppm, above this Less than ppm, above this Less than ppm, above this Iron Oxide level deposition will occur level deposition will occur level deposition will occur Suspended Solids Erosion Threshold Velocity (Fresh Water) NOTES: Grains = ppm divided by mg/l is equivalent to ppm ondensate Drain Less than 0 ppm and filtered for max. of 00 micron size Less than 0 ppm and filtered for max. of 00 micron size Less than 0 ppm and filtered for max. of 00 micron size < ft/sec < ft/sec < ft/sec // On vertical units, the internal condensate drain assembly consists of a drain tube which is connected to the drain pan, a / in. PV female adapter and a flexible connecting hose. The female adapter may exit either the front or the side of the cabinet. The adapter should be glued to the field-installed PV condensate piping. On vertical units, a condensate hose is inside all cabinets as a trapping loop; therefore, an external trap is not necessary. Horizontal Drain onnection (omposite Drain Pan) On horizontal units, a PV stub or stainless steel tube is provided for condensate drain piping connection. An external trap is required (see below). If a vent is necessary, an open stand pipe may be applied to a tee in the fieldinstalled condensate piping. Unit Pitch for Drain / or / PV oupling Vent (if needed) / or / PV /'' Pitch / or / PV tube stub. in.. in. / in. per foot Tube Stub Drain

14 System leaning and Flushing leaning and Flushing Prior to start up of any heat pump, the water circulating system must be cleaned and flushed of all dirt and debris. If the system is equipped with water shutoff valves, the supply and return runouts must be connected together at each unit location (This will prevent the introduction of dirt into the unit, see Figure ). The system should be filled at the water make-up connection with all air vents open. After filling, vents should be closed. The contractor should start the main circulator with the pressure reducing valve makeup open. Vents should be checked in sequence to bleed off any trapped air and to verify circulation through all components of the system. As water circulates through the system, the contractor should check and repair any leaks found in the piping system. Drain(s) at the lowest point(s) in the system should be opened for initial flush and blowdown, making sure water fill valves are set at the same rate. heck the pressure gauge at the pump suction and manually adjust the makeup water valve to hold the same positive pressure both before and after opening the drain valves. Flushing should continue for at least two hours, or longer if required, until drain water is clean and clear. The supplemental heater and/or circulator pump, if used, should be shut off. All drains and vents should be opened to completely drain the system. Short-circuited supply and return runouts should now be connected to the unit supply and return connections. efill the system with clean water. Test the system water for acidity and treat as required to leave the water slightly alkaline (ph. to.). The specified percentage of antifreeze may also be added at this time. Use commercial grade antifreeze designed for HVA systems only. Environol brand antifreeze is recommended.. Once the system has been filled with clean water and antifreeze (if used), precautions should be taken to protect the system from dirty water conditions. Dirty water will result in system-wide degradation of performance, and solids may clog valves, strainers, flow regulators, etc. Additionally, the heat exchanger may become clogged which reduces compressor service life and can cause premature unit failure. Figure : Flushing with Water Shutoff Valve Equipped Systems eturn unout Supply unout ubber Hose unouts Initially onnected Together Mains Ground Source Loop System heckout Once piping is completed between the unit pumping system and ground loop, final purging and charging of the loop is needed. A high pressure pump is needed to achieve adequate flow velocity in the loop to purge air and dirt particles from the loop itself. Antifreeze solution is used in most areas to prevent freezing. Flush the system adequately to remove as much air as possible; then pressurize the loop to a static pressure of 0-0 psi (summer) or 0- psi (winter). This is normally adequate for good system operation. Loop static pressure may decrease soon after initial installation, due to pipe expansion and loop temperature change. unning the unit for at least 0 minutes after the system has been completely purged of air will allow for the break-in period. It may be necessary to adjust static loop pressure (by adding water) after the unit has run for the first time. Loop static pressure will also fluctuate with the seasons. Pressures will be higher in the winter months than during the cooling season. This fluctuation is normal and should be considered when charging the system initially. Ensure the pump provides adequate flow through the unit by checking pressure drop across the heat exchanger. Usually.-.0 gpm of flow per ton of cooling capacity is recommended in earth loop applications. In boiler/tower application, set the loop control panel set points to desired temperatures. Supply power to all motors and start the circulating pumps. After full flow has been established through all components including the heat rejector (regardless of season), air vented and loop temperatures stabilized, each of the units will be ready for check, test and start up and for air and water balancing.

15 Open Loop Ground Water Systems Typical open loop piping is shown below. Always maintain water pressure in the heat exchanger by placing water control valves at the outlet of the unit to prevent mineral precipitation. Use a closed, bladder-type expansion tank to minimize mineral formation due to air exposure. Insure proper water flow through the unit by checking pressure drop across the heat exchanger and comparing it to the figures in unit capacity data tables in the specification catalog..- gpm of flow per ton of cooling capacity is recommended in open loop applications. Due to only minor differences in flow rate from low to high, only one solenoid valve should be used. The valve should be sized for full flow. Discharge water from the unit is not contaminated in any manner and can be disposed of in various ways, depending on local codes, i.e. recharge well, storm sewer, drain field, adjacent stream or pond, etc. Most local codes forbid the use of sanitary sewer for disposal. onsult your local building and zoning departments to assure compliance in your area. NOTE: For open loop/groundwater systems or systems that do not contain an antifreeze solution, set SW-Switch # to the WELL position (efer to the Dip Switch Field Selection table). Slow opening/closing solenoid valves (type VM) are recommended to eliminate water hammer. Figure : Open Loop Solenoid Valve onnection Option Typical quick operating external V water solenoid valve (type PPV00 or BPV00) wiring. Figure 9: Open Loop Solenoid Valve onnection Option Typical slow operating external V water solenoid valve (type VM) wiring. P P S DUAL APAITY ONLY (area within dashed boxed) HI Acc om Acc N P SV Solenoid Valve Blk() -GND SV Acc NO VM valve Solenoid Valve Violet() Logic Board NOTE: SW- should be in the omp ON position. Figure 0: Open System - Groundwater Application Unit Supply Aux. Heat Supply Flexible Duct ollar ubber Bladder Expansion Tank Hot Water Generator onnections Drain Solenoid Valve Flow ontrol Valve (on outlet of Solenoid Valve) Water Out Water In Disconnects (IfApplicable) ompressor Line Voltage Low Voltage to Thermostat and Valve P/T Plugs Vibration Absorbing Pad Strainer Boiler Drains For HX Flushing Shut Off Valves Shut Off Valves (to isolate solenoid valve while acid flushing)

16 Hot Water Generator onnections The heat reclaiming hot water generator coil is of vented double-wall copper construction and is suitable for potable water. To maximize the benefits of the hot water generator a minimum 0-gallon water heater is recommended. For higher demand applications, use an 0-gallon water heater or two 0-gallon water heaters connected in a series as shown below. Electric water heaters are recommended. Make sure all local electrical and plumbing codes are met for installing a hot water generator. A water softener is recommended with hard water (greater than 0 grains or 0 total hardness). Water Tank Preparation To install a unit with a hot water generator, follow these installation guidelines.. Turn off the power to the water heater.. Attach a water hose to the water tank drain connection and run the other end of the hose to an open drain or outdoors.. lose the cold water inlet valve to the water heater tank.. Drain the tank by opening the valve on the bottom of the tank, then open the pressure relief valve or hot water faucet.. Flush the tank by opening the cold water inlet valve to the water heater to free the tank of sediments. lose when draining water is clear.. Disconnect the garden hose and remove the drain valve from the water heater.. efer to Plumbing Installation and Hot Water Generator Startup. AUTION: Elements will burn out if energized dry. Typical Hot Water Generator Installation Hot Water Generator Installation In Preheat Tank / in. x / in. x / in. Tee Ball Valve Vent old Water In Hot Water Out / in. x / in. x / in. Tee Ball Valve Vent old Water In Hot Water Out HWG Water Out P/T elief Valve HWG Water Out P/T elief Valve P/T elief Valve In HWG Water In Field Installed HWG Pump In Drain Valve HWG Water In Field Installed HWG Pump Drain Valve NOTE: This configuration maximizes hot water generator capability.

17 Hot Water Generator onnections cont. Plumbing Installation. Inspect the dip tube in the water heater cold inlet for a check valve. If a check valve is present it must be removed or damage to the hot water generator circulator will occur.. emove drain valve and fitting.. Thread the /-inch NPT x -/-inch brass nipple into the water heater drain port.. Attach the center port of the /-inch FPT tee to the opposite end of the brass nipple.. Attach the /-inch copper to /-inch NPT adaptor to the side of the tee closest to the unit.. Install the drain valve on the tee opposite the adaptor.. un interconnecting tubing from the tee to HWG water out.. ut the cold water IN line going to the water heater. 9. Insert the reducing solder tee in line with cold water IN line as shown. 0. un interconnecting copper tubing between the unit DHW water IN and the tee (/-inch nominal). The recommended maximum distance is 0 feet.. To prevent air entrapment in the system, install a vent coupling at the highest point of the interconnecting lines.. Insulate all exposed surfaces of both connecting water lines with /-inch wall closed cell insulation. NOTE: All plumbing and piping connections must comply with local plumbing codes. Hot Water Generator Startup. Make sure the power is off to the heat pump. onnect the wire from the hot water generator pump to T on the contactor.. lose the drain valve to the water heater.. Open the cold water supply to the tank.. Open a hot water faucet in the building to bleed air from the system. lose when full.. Open the pressure relief valve to bleed any remaining air from the tank, then close.. If so equipped, turn the venting (burping) screw in the center of the pump two () turns open (water will drip out), wait until all air is purged from the pump, then tighten the plug. Use vent couplings to bleed air from the lines.. arefully inspect all plumbing for water leaks and correct as required.. Before restoring electrical supply to the water heater, adjust the temperature setting on the tank. On tanks with both upper and lower elements, the lower element should be turned down to the lowest setting, approximately 00 F. The upper element should be adjusted to 0 F to 0 F. Depending upon the specific needs of the customer, you may want to adjust the upper element differently. On tanks with a single element, lower the thermostat setting to 0 F. 9. After the thermostat(s) is adjusted, replace the access cover and restore electrical supply to the water heater. 0. Make sure that any valves in the hot water generator circuit are open.. Turn on the unit to heating.. The HWG pump should be running. When the pump is first started, turn the venting (burping) screw (if equipped) in the center of the pump two () turns open until water dribbles out, then replace. Allow the pump to run for at least five minutes to ensure that water has filled the circulator properly.. The temperature difference between the water entering and leaving the hot water generator should be F to F. The water flow should be approximately 0. gpm per ton of nominal cooling.. Allow the unit to heat water for to 0 minutes to be sure operation is normal. AUTION: Never operate the HWG circulating pump while dry. If the unit is placed in operation before the hot water generator piping is connected, be sure that the pump wires are disconnected from the contactor. Freeze Detection Set SW- on the printed circuit board for applications using a closed loop antifreeze solution to LOOP ( F). On applications using an open loop/ground water system (or closed loop no antifreeze), set this dip switch to WELL (0 F), the factory default setting. (efer to the Dip Switch Field Selection table).

18 Electrical onnections General Be sure the available power is the same voltage and phase as that shown on the unit serial plate. Line and low voltage wiring must be done in accordance with local codes or the National Electric ode, whichever is applicable. ontrol Box Unit Power onnection onnect the incoming line voltage wires to L and L of the contactor as shown in Figure for single-phase unit. onsult the Unit Electrical Data in the Specification atalog for correct fuse sizes. Accessory elay A set of dry contacts has been provided to control accessory devices, such as water solenoid valves on open loop installations, electronic air cleaners, humidifiers, etc. This relay contact should be used only with volt signals and not line voltage power. The relay has both normally open and normally closed contacts and can operate with either the blower or the compressor. Use DIP switch SW- to cycle the relay with blower or compressor. The relay contacts are available on terminals # and # of P. Figure : 0-0/0/ control box 0 Volt Operation All Envision Series 0/0 units are factory wired for 0 volt operation. For 0 volt operation, the red and blue transformer wires must be switched on terminal strip PS. AUTION: When installing a unit with a variable speed EM blower motor in 0/0/ voltage, a neutral wire is required to allow proper unit operation. POWE WIING L L

19 Microprocessor ontroller ENVISION OMMEIAL 0.- TONS INSTALLATION MANUAL Electrical onnections cont. Pump Wiring See Figure for electrical connections from control box to pumps. Figure : Pump Wiring 0-0/0/ TO PUMP Electronic Thermostat Position the thermostat subbase against the wall so that it is level and the thermostat wires protrude through the middle of the subbase. Mark the position of the subbase mounting holes and drill holes with a / in. bit. Install supplied anchors and secure base to the wall. Thermostat wire must be -conductor, -AWG wire. Strip the wires back /-inch (longer strip lengths may cause shorts) and insert the thermostat wires into the connector as shown. Tighten the screws to insure secure connections. The thermostat has the same type connectors, requiring the same wiring. See instructions enclosed in the thermostat for detailed installation and operation information. L L NOTE: DIP switch SW- is required to be in the OFF position for the control to operate with FaultFlash or omfortalk thermostats. SW- in the ON position configures the control to operate with typical thermostats (continuous lockout signal). There must be a wire connecting Y on the microprocessor controller to nd stage compressor on the thermostat for proper operation. Figure : Thermostat Wiring Y Y W O G L VA (Hot) VA (ommon) ompressor (st Stage) ompressor (nd Stage) Aux. Heat eversing Valve Blower elay System Monitor Thermostat onnection Auxiliary Heat atings (0-0V and Premier ontrol Only) Model KW BTU/H Min Envision Series ompatibility Stages 0V 0V 0V 0V cfm EAS(H).9. 9,00,900 0 EAM(H)..,00,00 0 EAM(H).. 9,00,900 0 EAM(H)0. 9.,00,00 0 EAL(H)0. 9.,00,00 00 EAL(H) 0..,900 9,00 0 EAL(H)- 0..,900 9,00 0 EAL(H) ,00, //0 "H" is used in part number for horizontal units. 9

20 Electrical Data PS Motor Single Speed Model ated Voltage Voltage Min/Max All Models Standard Models Internal Pump Models ompressor Blower Total Min Max Water Total Min Max Motor Unit irc Fuse/ Pump Unit irc Fuse/ M LA LA LA** FLA FLA Amp HA FLA FLA Amp HA /0/ 9/...0 n/a /0/ /9...0 n/a /0/ 9/..9.0 n/a /0/ / n/a /0/ 9/ n/a /0/ / n/a /0/ 9/ 0... n/a /0/ /9...0 n/a /0/ 9/ /0/ / n/a * 0-0/0/ 9/ /0/ / n/a /0/ 9/ /0/ / n/a * 0-0/0/ 9/ /0/ / n/a /0/ 9/ /0/ / n/a /0/ / n/a /0/ /0...0 n/a /0/ 9/ * 0-0/0/ / n/a /0/ /0...0 n/a /0/ 9/ /0/ / n/a /0/ / n/a /0/ /.9.. n/a... 0 n/a /0/ 9/ * 0-0/0/ / n/a /0/ / n/a /0/ /.9.. n/a n/a /0/ 9/ /0/ /... n/a /0/ / n/a /0/ /..0.0 n/a... 0 n/a /0/ 9/ * 0-0/0/ /... n/a /0/ / n/a /0/ /..0.0 n/a n/a /0/ 9/ /0/ / n/a /0/ /0...0 n/a /0/ /.9..9 n/a n/a /0/ 9/ /0/ / n/a /0/ / n/a /0/ /.9..0 n/a n/a 9.. HA circuit breaker in USA only 0//0 * With optional high-static PS motor ** With optional IntelliStart TM, only available on 0-0/0/ 0

21 Electrical Data cont. Variable Speed EM Motor Model ated Voltage Voltage Min/Max All Models Standard Models Internal Pump Models ompressor Blower Motor Total Unit Min irc Max Fuse/ Water Pump Total Unit Min irc Max Fuse/ M LA LA LA** FLA FLA Amp HA FLA FLA Amp HA 0 0-0/0/ 9/ n/a /0/ / n/a /0/ 9/ 0... n/a /0/ /9...0 n/a /0/ 9/ /0/ / n/a /0/ 9/ /0/ / n/a /0/ 9/ /0/ / n/a /0/ / n/a /0/ /0...0 n/a /0/ 9/ * /0/ / n/a /0/ / n/a /0/ /0...0 n/a /0/ 9/ /0/ / n/a /0/ / n/a /0/ 9/ * 0-0/0/ / n/a /0/ / n/a /0/ 9/ /0/ /... n/a /0/ / n/a /0/ 9/ * 0-0/0/ /... n/a /0/ / n/a /0/ 9/ /0/ / n/a /0/ /0...0 n/a /0/ 9/ /0/ / n/a /0/ / n/a /0/ 9/ /0/ / n/a /0/ / n/a /0/ / n/a /0/ 9/ /0/ /...0 n/a /0/ / n/a /0/ 9/ * 0-0/0/ /...0 n/a /0/ / n/a /0/ 9/ /0/ /.0..0 n/a /0/ / n/a /0/ 9/ * 0-0/0/ /.0..0 n/a /0/ / n/a /0/ 9/ /0/ /...0 n/a /0/ / n/a /0/ 9/ /0/ / n/a /0/ /0...0 n/a HA circuit breaker in USA only 0//0 * With optional HP EM motor ** With optional IntelliStart TM, only available on 0-0/0/ Single Speed Dual apacity AUTION: When installing a unit with a variable speed EM blower motor in 0/0/ voltage, a neutral wire is required to allow proper unit operation.

22 Blower Performance Data Standard PS Motor Model Blwr Blower Motor Airflow (cfm) at External Static Pressure (in. wg) Spd Size HP H MH x / ML* L H MH* x / ML L H M 9 x / L H M 9 x / L H M 9 x / L H M 9 x / L H M 0 x 0 / L H M 0 x 0 / L H M 0 x 0 / L H M x L H M x L //0 Optional High Static PS Motor Model Blwr Blower Motor Airflow (cfm) at External Static Pressure (in. wg) Spd Size HP H M 9 x / L H M 9 x / L H M 0 x 0 / L H M 0 x 0 / L H M 0 x 0 / L //0 Factory settings are in Bold. Air flow values are with dry coil and standard in. MEV filter. For wet coil performance first calculate the face velocity of the air coil (Face Velocity [fpm] = Airflow [cfm] / Face Area [sq ft]). Then for velocities of 00 fpm reduce the static capability by 0.0 in. wg, 00 fpm by 0.0 in. wg, 00 fpm by 0.in. wg. and 00 fpm by 0. in. wg. * Setting for V operation. Setting Blower Speed - PS AUTION: Disconnect all power before performing this operation. FAN SPEED WIE HIGH MEDIUM LOW PS BLOWE MOTO BODY

23 Blower Performance Data cont. Variable Speed EM Motor MODEL MAX AI FLOW DIP SWITH SETTINGS ESP L L L L M M L H M M H H M H H w/hp* L M H L M H w/hp* L M H L M H w/hp* L M H L L M M H H MODEL MAX AI FLOW DIP SWITH SETTINGS ESP L M H L M H w/hp* L M H L M H w/hp* L M H L M H L M H /0/0 Factory settings are at recommended L-M-H DIP switch locations FM is controlled within ±% up to the maximum ESP M-H settings MUST be located within boldface FM range Max ESP includes allowance for wet coil and standard in. MEV filter Lowest and Highest DIP switch settings are assumed to be L and H respectively //0 A -position DIP switch package on the control allows the airflow levels to be set for low, medium, and high speed when using the variable speed EM blower motor. Only three of the DIP switches can be in the on position. The first on switch (the lowest position number) determines the low speed blower setting. The second on switch determines the medium speed blower setting. The third on switch determines the high speed blower setting. The example to the right shows SW on the control board configured for the following N00 airflow settings. Low Speed Blower: 900 cfm Medium Speed Blower: 0 cfm High Speed Blower: 0 cfm Off SW On 9 0 Setting Blower Speed - Variable Speed EM EM blower motors have a -speed selector dip switch on the logic board (SW) and are factory set for optimum performance. To change speeds, select the appropriate speeds on dip switch SW. onsult the EM blower performance table below for specific airflow and switch information. AUTION: Disconnect all power before performing this operation.

24 Wiring Schematics Premier ontrol 0-/0/ - PS Motor T T Grn PS Fan Motor Wh Brn ap efer to instructions below to change speeds. -High- L to white side of capacitor, L to H on motor. -Med- L to white side of capacitor, L to M on motor, orange wire to M on motor. -Low- L to white side fo capacitor, L to L on motor, Yellow wire to L on motor, Orange to M on motor ed T Black Notes: - V Accessory relay (see SW - for description of operation ) - When optional electronic air -filter is installed, power for the electronic air-filter is provided by P- and VA. SW- must be in the OFF position for pulsed L lockout signal and in the ON position for constant L lockout signal. - This Switch allows the unit to down stage with the t -stat when OFF and finish on second stage when ON. Finish second stage reduces stage changing in recip dual capacity compressors and should be ON for unzoned Dual ap E -Series or Premier speed units. Air flow Settings H M L LI MI Ora Yel MI LI Wht G Unit Power 0/0/ /0/ L T L T L T Blk B Brown() Blk Blu 0V V B Blk/Wht() Transformer Fused L Fused L 0V L 0V L 0V L V Blk/Wht() F-0A 0V Yel Blk/Wh NO NO NO N NO N OM OM OM OM F-0A 0V Blk() Thermostat Y Y W O G L Blk() NOTE Violet() NOTE Optional Electronic Air-Filter Status LED PB SW -GND P Y Y W O G LO HI P Shut Down SL In SL Out Not Used NOTE P Acc om Acc N Acc NO G Y P EM Air Flow Settings Premier Microprocessor Logic ontrol (D Voltage) SW On SW On SW On 9 0 Test / Norm Loop / Well Fan / omp Dehum / Norm No Htg / Htg Inputs / Norm Outputs / Norm Pulse L / onstant L (NOTE ) Speed / Speed Normal / Finish on nd (Note ) No PM / PM Electric Heat / Normal N or Series / E Series or Premier LED Drain Water Flow High Press Low Press / omp Air Flow Status DHW Limit DHW off *Green LED not flashing Normal Display Mode Field Selection Dips - # On, # On, # On Drain pan overflow Lockout FD thermistor (loop< F,well<0 F) Lockout High Pressure > 00 PSI Lockout Low Pressure < 0 PSI Lockout EM PM < 00 rpm Lockout Microprocessor malfunction* HWL thermistor > 0 F DHW pump switch off Main Logic PB urrent Fault Status # Off, # On, # On Drain pan overflow FD thermistor (loop< F, well<0 F) High Pressure > 00 PSI Low Pressure < 0 PSI EM PM < 00 rpm Not Used HWL thermistor > 0 F DHW pump switch off Diagnostic Modes Inputs # Off, # On Y Y O G W SL SL -- P 0 9 P 9 0 Outputs # On, # Off ompressor Lo ompressor Hi V FAN Loop Pump Loop Pump -- Not Used Black Violet Yellow Gray Brown Not Used Not Used Orange Pink White Tan Not Used Tan ed Orange Orange Not Used Not Used Pink Pink Yellow Yellow Black Black Outputs # Off, # Off Blower Lo Blower Med Blower Hi Aux Heat # Aux Heat # AuxHeat # Aux Heat # -- P 0 P0 Not Used V T T O HWL FD LP HP P T G L A - - O S - F and F - HE - HP - E to E - LP - PB, PB - PS - V - SW - SW - SW - SW - TS - HWL - S - S - FD - Legend Factory Low voltage wiring Factory Line voltage wiring Field low voltage wiring Field line voltage wiring Optional block D Voltage PB traces Internal junction Quick connect terminal Wire nut Field wire lug Ground elay ontacts- N.O., N.. Fuse Thermistor Light emitting diode - Green elay coil apacitor w/ bleed resistor Switch - ondensate overflow Switch - High pressure Switch - Low pressure Switch -Hot Water On/Off Polarized connector omfort Alert ompressor ontactor ondensate overflow sensor DHW pump relay Loop pump relay PS Fan Speed elay PS Fan Power elay ompressor Solenoid Fuses Heater element High pressure switch Aux heat stage relays Low pressure switch Power blocks Power strip eversing Valve coil DIP package position DIP package position DIP package position Hot water pump enable switch Thermal limit switch Hot water limit sensor Start ontactor Start elay Freeze Detection Sensor 9P- /0/0

25 Transformer Violet () Yellow () Blk/Wht () LP DF/FP Yellow () ES D09 D0 D0 D0 Green/Yel () D0 D0 D0 D0 PS Fan Motor D0 Brn 0 9 ompressor Wh Blu Grn ap Blk 0 V HP ed () Violet () 0 P ap 9P- //0 Unit Power Supply T T P H M L NOTE J VD AI GOUND VA om VA K Brown (0) O Brown () White () - AI + FD T Wht/ () - AI + Black () DA T 9 Blk/ed () 0 AI A A A AI VD A A A A AI Gray () Yellow () Yellow/Wht () Yellow/ed () Orange () Orange/Wht () NOTE A A A A LED VD A A A Yellow (0) J 9 PWM K 0 PWM om PWM Gray () A 0 PB (0) ed () Black () Johnson FX-0 Brown () Violet () Yellow () Green (0) Orange () Yellow () () Gray () Orange () Orange/Wht () NOTE () OS Brown () Black () ed () Black (F0) Black (F9) Black (F) -/0/ Black (F) Black (F) Black (F) Black (F) L L Black (F) Black (F) G Air flow Settings White Black Black () B Black (F) NOTE J0 VA om P Gray/Wht () DI Black () DI Green (0) DI0 Orange () DI9 () DI Yellow () DI J9 Black () 9 DI //// om Violet () 0 DI ed () DI Gray () DI () DI Pink () DI Blk/Wht (9) 9VD Orange (0) DI Black (F0) J Black () Yellow (0) (0) Notes: Disconnect for degree freeze protection. Acc output is cycled with the compressor. Acc output is cycled with the fan.,, Y, Y, and G inputs are for use with a wall mounted thermostat. TO, S, S, AI, and SS are for use with a TAXXJ0 zone sensor. Network controllable VA output. Network controllable PWM output. Wires,, & can be configured for a field installable humidity sensor or an A99 temperature sensor. Network configurable input. 9 Not Used Bundled in the air handler. Green/Yel () Black (F9) NOTE TB Black (F) Black () Black (F) Black (F) Black (F) Black (F) Black (F) Black (F) Black (F) 0 9 VA () Black () V OM () Black (L) 0 Alarm (L) V V Black () Yellow (0) Black (X) NOTE Gray (9) NOTE Acc (X) Yellow () Yellow () Yellow (J) Violet () Brown () Yellow () Gray () NOTE (0) Yellow (J) Yellow (J) Black (X) NOTE Orange () Black () Orange (0) Black () White () Violet () Violet () Yellow (J) Black () ed () Blk/Wht Yellow NOTE 9 PB Yellow (0) Blk/Wht () B Black () P T 9 Acc (X) Black (G) B S A 9 Fan (G) Wiring Schematics cont. FX0 ontrol -0/0/ - PS Motor NOTE Black (O) ev Valve (O) Grn/Yel () Black (Y) omp (Y) omp (Y) Black (Y) Setpoint Shift (SS) Black (SS) Zone Sensor Terminal AI om (AI) Black (AI) Zone Sensor Terminal oom Sensor (S) Black (S) Zone Sensor Terminal Black () Sensor om (S) Zone Sensor Terminal Black () Temp Occ (TO) Zone Sensor Terminal Legend Thermistor elay coil apacitor w/ bleed resistor Factory Low voltage wiring Factory Line voltage wiring Field low voltage wiring Field line voltage wiring Optional block D Voltage PB traces Field Zone Sensor Wiring Switch - ondensate overflow Internal junction Switch - High pressure Quick connect terminal Switch - Low pressure L Field wire lug Polarized connector Ground Open Jumper elay ontacts- N.O., N.. ectified ompressor P Solenoid Plug losed Jumper ompressor Solenoid - ompressor ontactor OS - Occupied Switch O - ondensate Overflow Sensor PB, PB - Power blocks P - ompressor Proving P - ectified Solenoid ompressor Plug P - ompressor Solenoid V - eversing Valve coil DA - Discharge Air Temperature Sensor SW - DIP package position DF/FP Dirty Filter or Fan Proving SW - DIP package position DH - Dehumidification Switch or Humidistat SW - DIP package position ES - Emergency Shutdown SW - Hot water pump enable switch HP - High Pressure Switch TB - Terminal Board HWL - Hot water limit sensor TS - Thermal limit switch LP - Low Pressure Switch FD - Freeze Detection

26 ENVISION OMMEIAL 0.- TONS INSTALLATION MANUAL P Pink Yel Blk Gray Gray Gray P HE TS Blk Blk HE TS Yel Yel Pink HE TS Pink HE TS Thermostat Y Y W L NOTE 9 SA installed units only Local codes may require a single source of power supply Single Disconnect Power 0-0/0/ Breaker box L L furnished by installer NOTE SL In SL Out Optional emote Unit Without Loop Pump Blk/Wht() Gry/Wht() Org() Brn() NOTE PS ircuit Breakers O Factory Low voltage wiring Factory Line voltage wiring Field low voltage wiring HWL Field line voltage wiring Optional block D Voltage PB traces FD Internal junction Quick connect terminal LP L Field wire lug HP Ground With optional ' EA' Series Auxiliary ElectricHeat Typical schematic shown Auxiliary Electric Heat Power 0-0/0/ L NOTE L L L L L G L L L L G P9 F Grn Brn Brn Blu Org Violet Aux Elect Power Unit Power 0-0/0/ 0-0/0/ Or Pink Yel Blk PB Gray Pink Blk E Yel Gray Grn NO E EM NO Blk Fan Motor E Yel NO E P NO Yellow EA Series PB P0 P0 Orange 9P- /0/0 Pink White Tan ed E-Series Logic Board - Physical Layout Gray Pink O G Status LED PB SW G High Press High Pressure > 00 PSI Lockout High Pressure > 00 PSI Low Press / omp Low Pressure < 0 PSI Lockout Low Pressure < 0 PSI P SW Off On Y T T 0V - L 0V - L Fused L Fused L Fused L Fused L 0V - L 0V - L F F Thermistor N.. Light emitting diode - Green N.O. N.O. N.O. N.O. - om - Loop Pump - Premier Logic Board Microprocessor 0 0 P P 9 9 Fused L Blk() NOTE Optional Electronic Air-Filter Unit Power 0-0/0/ L L Fused L Fused L 0V L 0V L 0V L F-0A 0V NO NO NO N NO N OM OM HI P -GND P Premier Microprocessor Logic ontrol (D Voltage) P Shut Down SL In SL Out Not Used NOTE P Acc om Acc N 0 Acc NO Main Logic PB P Not Used Brown Not Used Not Used Orange Pink White Tan ed Not Used Tan Not Used Orange Orange Pink Pink Yellow Yellow Black Blk Yel Transformer EM V Fan Motor Blk/Wh - DHW Pump -GND LO HI SW Off On SW Off On 9 0 P P Shut SL SL Y Y W O G L Down Out SL SL Out P A A A NO N OM om Notes: - Place switch to 0V position to operate unit at 0V. - onnection of remote unit that does not have a loop pump for slave operation. - V Accessory relay (see SW - for description of operation) G IN IN F-0A 0V Violet() T T T ed Black T T OM OM Y Y W LO 0 EM Air Flow Settings NOTE 0 P SW On SW On SW On Test / Norm Loop / Well Fan / omp Dehum / Norm No Htg / Htg Inputs / Norm Outputs / Norm Pulse L / onstant L (NOTE 9) Speed / Speed Normal / Finish on nd (Note ) No PM / PM Electric Heat / Normal (Note ) N or Series / E Series or Premier 0 Diagnostic Modes LED Normal Display Mode urrent Fault Status Inputs Outputs Field Selection Dips - # On, # On, # On # Off, # On, # On # Off, # On # On, # Off Drain Drain pan overflow Lockout Drain pan overflow Y ompressor Lo Water Flow FD thermistor (loop< F,well<0 F) Lockout FD thermistor (loop< F, well<0 F) Y ompressor Hi Air Flow EM PM < 00 rpm Lockout EM PM < 00 rpm Status Microprocessor malfunction* Not Used DHW Limit HWL thermistor > 0 F HWL thermistor > 0 F DHW off DHW pump switch off DHW pump switch off V FAN W SL Loop Pump SL Loop Pump *Green LED not flashing Black Violet Yellow Gray Not Used Not Used Black Outputs # Off, # Off Blower Lo Blower Med Blower Hi Aux Heat # Aux Heat # AuxHeat # Aux Heat # V Brn Org Blk/Wht () Transformer Switch 0V 0V NOTE Grn ed Blu 0V 0V P 0 P - The blk/wh and gray/wh wires are removed when Aux Heat is installed. - Buss lugs L and L can be removed and dual power wire sets connected directly to box lugs L, L, and L, L. - This Switch allows the unit to down stage with the t -stat when OFF and finish on second stage when ON. Finish second stage reduces stage changing in recip dual capacity compressors and should be ON for unzoned Dual ap E -Series or Premier speed units. - When optional electronic air -filter is installed, power for the electronic air-filter is provided by P- and VA. SW- should be in the OFF position when using the P0A0 electric heat board and should be ON when using the PA0 electric heat board. 9 SW- must be in the OFF position for pulsed L lockout signal and in the ON position for constant L lockout signal. 0 - Air Flow onfiguration Example: SW configured for dip as low, dip as medium, and dip as high Speed EM fan Dual apacity units only. P 0 Black Violet Gray O G 9 O G On/Off PM PWM PM grnd On/Off PM PWM PM grnd NOTE S P un apacitor (0) Legend Wire nut elay ontacts- N.O., N.. Fuse A - omfort Alert - ompressor ontactor O - ondensate overflow sensor - DHW pump relay - Loop pump relay - PS Fan Speed elay - PS Fan Power elay S - ompressor Solenoid F and F - Fuses HE - Heater element HP - High pressure switch E to E - Aux heat stage relays LP - Low pressure switch P G FD - elay coil apacitor w/ bleed resistor Switch - ondensate overflow Switch - High pressure Switch - Low pressure Switch -Hot Water On/Off Polarized connector PB, PB - Power blocks PS - Power strip V - eversing Valve coil SW - DIP package position SW - DIP package position SW - DIP package position SW - Hot water pump enable switch TS - Thermal limit switch HWL - Hot water limit sensor S - Start ontactor S - Start elay Freeze Detection Sensor P T Wiring Schematics cont. Premier ontrol 0-0/0/ - EM Motor

27 S ENVISION OMMEIAL 0.- TONS INSTALLATION MANUAL Wiring Schematics cont. Premier ontrol 0-0/0/ with IntelliStart - EM Motor Thermostat Y Y W L NOTE 9 NOTE SL In SL Out Optional emote Unit Without Loop Pump G Org( ) Brn() Gry/Wht(0) Blk/Wht() NOTE PS Brn Brn Org With optional ' EA' Series Auxiliary Electric Heat Typical schematic shown Org Blu Violet Grn P9 Auxiliary Electric Heat Power 0-0/0/ Pink L NOTE G L L L L G Yel Brn Blk Or Gray F L PB E NO Pink Yel Blk Gray Gray Pink Yel Blk Gray E NO E NO Blk Yel P Gray Pink Blk Yel Gray HE TS Blk HE TS Yel HE TS Pink Black P E NO Pink HE TS Violet Yellow P0 EA Series PB O P0 Gray Orange Pink White Tan HWL FD LP HP ed Logic Board - Physical Layout SA installed units only Local codes may require a single source of power supply Single Disconnect Power 0-0/0/ Breaker box L L furnished by installer L L L L Aux Elect Power 0-0/0/ Unit Power 0-0/0/ Notes: - Switch and ed wires for 0V operation. - onnection of remote unit that does not have a loop pump for slave operation. - V Accessory relay (see SW - for description of operation) - The blk/wh and gray/wh wires are removed when Aux Heat is installed. - Buss lugs L and L can be removed and dual power wire sets connected directly to box lugs L, L, and L, L. - DHW pump only in models with hot water generation option. - Air Flow onfiguration Example: SW configured for dip as low, dip as medium, and dip as high Speed EM fan - SW- should be in the OFF position when using EM motor and P0A0 electric heat board and should be ON when using EM with PA0 electric heat board 9 - SW- must be in the OFF position for pulsed L lockout signal and in the ON position for constant L lockout signal. 0 - When optional electronic air-filter is installed, power for the electronic air-filter is provided by P- and VA. - omfort Alert fault output to Premier ontrol Board - This Switch allows the unit to down stage with the t-stat when OFF and finish on second stage when ON. Finish second stage reduces stage changing in recip dual capacity compressors and should be ON for unzoned Dual ap E-Series or Premier speed units. O G Status LED PB SW P P SW Off On Y T T 0V - L Fused L Fused L Fused L 0V - L F F N.O. Microprocessor 9 0V - L 0V - L 0 0 P P 9 Fused L Fused L A Fuse NO Blk() -GND P P Shut Down SL In SL Out Not Used NOTE P NOTE 0 Optional Electronic Air-Filter Acc om Acc N Acc NO Blu DHW Pump Pink NOTE Fused L Gry(9) Fused L Unit Power 0-0/0/ T T L L 0V L 0V L 0V L NOTE Blk ed 0V Blu 0V OM NO OM F-0A 0V Yel V Blk/Wh Transformer P Black Violet Yellow Premier Microprocessor Logic ontrol (D Voltage) Gray Brown Not Used Not Used Orange Pink White Tan P Main Logic PB Not Used Orange Orange Pink Pink Yellow Yellow Black Black N.O. - DHW Pump -GND LO HI SW Off On N.. N.O. SW Off On 9 0 P P Shut SL SL Y Y W O G L Down Out SL SL Out N.O. om P A A A NO N OM ircuit Breakers G IN IN F-0A 0V Ext Pump / hp Total 0-0/0/ Pump Pump omfort Alert Y Violet() Violet() Yel() Blk() Wht() HI Y Y W LO Blu() PB Pink() Yel() un apacitor Tan () Black D SOL omfort Alert S ed Pink Black PB ed un Winding IntelliStart Active Start ommon IntelliStart Grn P Grn P NO N OM NO N OM Blk() Fused L EM Fan Motor EM Fan Motor Not Used 0 0 EM Air Flow Settings NOTE SW On 0 SW On Test / Norm Loop / Well Fan / omp Dehum / Norm No Htg / Htg Inputs / Norm Outputs / Norm Pulse L / onstant L SW On Speed / Speed Normal / Finish on nd (Note ) No PM / PM Old EH & EM / Normal (Note ) Envision / E Series or Premier P 0 Tan ed Not Used Not Used L omfort Alert V Y G O G On/Off PM PWM PM grnd P 0 On/Off PM PWM PM grnd P LED Normal Display Mode Field Selection Dips - # On, # On, # On Drain Drain pan overflow Lockout Water Flow FD thermistor (loop< F,well<0 F) Lockout High Press High Pressure Low Press/A Low Pressure / omfort Alert Air Flow EM PM < 00 rpm Lockout Status Microprocessor malfunction* DHW Limit HWL thermistor > 0 F DHW off DHW pump switch off *Green LED not flashing Diagnostic Modes urrent Fault Status Inputs # Off, # On, # On # Off, # On Drain pan overflow Y FD thermistor (loop< F, well<0 F) Y High Pressure Low Pressure / omfort Alert EM PM < 00 rpm W Not Used SL HWL thermistor > 0 F SL DHW pump switch off Outputs # On, # Off ompressor Lo ompressor Hi V FAN DHW Pump Loop Pump Loop Pump Outputs # Off, # Off Blower Lo Blower Med Blower Hi Aux Heat # Aux Heat # Aux Heat # Aux Heat # NOTE omfort Alert Status Description LED Flash ode Green Solid Module Has Power ed Solid Y Present But ompressor Not unning ode Long un Time ode System Pressure Trip ode Short ycling ode Locked otor Yellow ode Open ircuit ode Open Start ircuit ode Open un ircuit ode Welded ontactor ode 9 Low Voltage L Factory Low voltage wiring Factory Line voltage wiring Field low voltage wiring Field line voltage wiring Optional block D Voltage PB traces Internal junction Quick connect terminal Wire nut Field wire lug Ground elay ontacts- N.O., N.. Fuse - om - Loop Pump - Premier Logic Board A - omfort Alert - ompressor ontactor O - ondensate overflow sensor - DHW pump relay - Loop pump relay - PS Fan Speed elay - PS Fan Power elay S - ompressor Solenoid F and F - Fuses FD - Freeze drotection sensor HE - Heater element HP - High pressure switch E to E - Aux heat stage relays Legend G Thermistor Light emitting diode -Green elay coil apacitor w/ bleed resistor Switch- ondensate overflow Switch- High pressure Switch- Low pressure Switch -Hot Water On/Off Polarized connector LP - Low pressure switch PB, PB - Power blocks PS - Power strip V - eversing Valve coil SW - DIP package position SW - DIP package position SW - DIP package position SW - Hot water pump enable switch TS - Thermal limit switch HWL - Hot water limit sensor S - Start ontactor S - Start elay omfort Alert Physical Layout POWE Data Port D Sol ALET TIP Y 9P- //09 O G P T Y L

28 LP Brown O FD T DA T Orange Green P P EM Fan Motor Violet () 9P- //0 DF/FP Johnson FX-0 J VD ES Brown (0) K Brown () Wht/ () Blk/ed () AI - AI + - AI AI AI VD AI LED GOUND VA om VA VD J PWM PWM om 9 0 PWM J0 VA om DI DI DI0 DI9 DI DI J9 DI //// om DI DI DI DI DI 0 9 D09 D0 D0 D0 D0 D0 D0 D0 D V HP 9 PWM G P 0 Violet () Yellow (0) P Transformer Violet () Yellow () Blk/Wht () Yellow () Green/Yel () A A A A A A Yellow (0) (0) A A A A A A A A A PB 0 9VD DI ompressor T L ed () Black () Brown () Violet () Yellow () Green (0) Orange () Yellow () () Gray () Orange () Orange/Wht () NOTE () ed Black T T L L OS Black () () ed () White () Black () Gray () Yellow () Yellow/Wht () Yellow/ed () J NOTE NOTE Orange () Orange/Wht () Yellow (0) K Gray () Gray/Wht () Black () Green (0) Orange () () Yellow () Black () Violet () ed () Gray () () Pink () Blk/Wht (9) Orange (0) Brown () Black () ed () Black (F0) Black (F9) Black (F) Black (F) Black (F) Black (F) Black (F) Black (F) Black (F) Black (F) Black (F0) Black (F9) Black (F) Black (F) Black (F) Black (F) Black (F) Black (F) Black (F) Black (F) 0 9 Notes: Disconnect for degree freeze detection. Acc output is cycled with the compressor. Acc output is cycled with the fan.,, Y, Y, and G inputs are for use with a wall mounted thermostat. TO, S, S, AI, and SS are for use with a TAXXJ0 zone sensor. Network controllable VA output. Network controllable PWM output. Wires,, & can be configured for a field installable humidity sensor or an A99 temperature sensor. Dual apacity only. 9 Network configurable input. 0 Black 0V ed () Black () Yellow (0) Gray (9) NOTE Yellow () Yellow () Yellow (J) Violet () Brown () Yellow () Gray () NOTE (0) Yellow (J) Green/Yel () NOTE TB Black () Yellow (J) Orange () Black () Orange (0) Black () PB Yellow Blk/Wht White () Black/Wht () Violet () Violet () Yellow (J) Black () VA () Black () P V OM () Black (L) T S 9 NOTE L Black () Unit Power 0/0/ With Neutral L L Alarm (L) Black (X) NOTE Acc (X) B S Black (X) NOTE Acc (X) Black (G) G N A 9 Wiring Schematics cont. FX0 ontrol 0/0/ - EM Motor Fan (G) WANING: Neutral wire required. Grn/Yel () PB NOTE 9 Black (O) ev Valve (O) Black (Y) omp (Y) omp (Y) Black (Y) Setpoint Shift (SS) Black (SS) Zone Sensor Terminal AI om (AI) Black (AI) Zone Sensor Terminal oom Sensor (S) Black (S) Zone Sensor Terminal Black () Sensor om (S) Zone Sensor Terminal Black () Temp Occ (TO) Zone Sensor Terminal Legend Thermistor elay coil apacitor w/ bleed resistor Factory Low voltage wiring Factory Line voltage wiring Field low voltage wiring Field line voltage wiring Optional block D Voltage PB traces Field Zone Sensor Wiring Switch - ondensate overflow Internal junction Switch - High pressure Quick connect terminal Switch - Low pressure L Field wire lug Polarized connector Ground Open Jumper elay ontacts- N.O., N.. ectified ompressor P Solenoid Plug losed Jumper ompressor Solenoid - ompressor ontactor OS - Occupied Switch O - ondensate Overflow Sensor PB, PB - Power blocks P - ompressor Proving P - ectified Solenoid ompressor Plug P - ompressor Solenoid V - eversing Valve coil DA - Discharge Air Temperature Sensor SW - DIP package position DF/FP Dirty Filter or Fan Proving SW - DIP package position DH - Dehumidification Switch or Humidistat SW - DIP package position ES - Emergency Shutdown SW - Hot water pump enable switch HP - High Pressure Switch TB - Terminal Board HWL - Hot water limit sensor TS - Thermal limit switch LP - Low Pressure Switch FD - Freeze Detection Sensor

29 Envision ontrols - Premier Shutdown Mode A VA common signal to the shutdown input on the control board puts the unit into shutdown mode. ompressor, hot water pump and blower operation are suspended. Standard Premier Microprocessor The Premier control system is a microprocessor-based printed circuit board conveniently located in the unit control box for accessibility. The microprocessor control is specifically designed for the Envision Series heat pumps and integrate single speed and dual capacity compressors, variable speed EM blower motors and advanced features needed in geothermal applications. All variable speed EM airflow selections are conveniently configured on the control via DIP switches. The microprocessor provides control of the entire unit as well as outputs for status modes, faults, and diagnostics. emovable low voltage thermostat terminal strips provide convenient field connections. LEDs are located on the front of the cabinet for quick inspection without removing any access panels. Startup The unit will not operate until all the inputs and safety controls are checked for normal conditions. At first powerup, a four minute delay is employed before the compressor is energized. omponent Sequencing Delays omponents are sequenced and delayed for optimum space conditioning performance. Accessory elay An accessory relay on the control board allows for field connection of solenoid valves, electronic air cleaners, etc. The accessory relay has a normally open output and a normally closed output. Short ycle Protection The control employs a minimum off time of four minutes to provide for short cycle protection of the compressor. ondensate Overflow Protection The Envision control board incorporates an impedance sensing liquid sensor at the top of the drain pan. Upon a continuous 0-second sensing of the condensate, compressor operation is suspended (see Fault etry), and the condensate overflow lockout LED begins flashing. Safety ontrols The Envision control receives separate signals for a high pressure switch for safety, a low pressure switch to prevent loss of charge damage, and a low suction temperature thermistor for freeze sensing. Upon a continuous 0-second measurement of the fault (immediate for high pressure), compressor operation is suspended, the appropriate lockout LED begins flashing. (efer to the Fault etry section below). Testing The Envision control allows service personnel to shorten most timing delays for faster diagnostics. Fault etry All faults (except for low PM faults with the EM blower motor) are retried twice before finally locking the unit out. An output signal is made available for a fault LED at the thermostat. The fault retry feature is designed to prevent nuisance service calls. Diagnostics The Envision control board allows all inputs and outputs to be displayed on the LEDs for fast and simple control board diagnosis. esistance Heat ontrol (0-0 Units) The electric heat control module contains the appropriate high-voltage control relays. ontrol signals energize the relays in the proper sequence, and the LED display board indicates which stages are energized. Heating Operation Heat, st Stage (Y) The blower motor is started on low speed immediately (PS ON), the loop pump is energized seconds after the Y input is received, and the compressor is energized on low capacity 0 seconds after the Y input. The blower is switched to medium speed seconds after Y input (EM only). Heat, nd Stage (Y,Y) Single-Speed Units Blower changes to high speed seconds after the Y input (EM only). Heat, nd Stage (Y,Y) Dual apacity Units The second stage compressor will be activated seconds after receiving a Y input as long as the minimum first stage compressor run time of minute has expired. The EM blower changes from medium to high speed seconds after the Y input. 9

30 Envision ontrols - Premier cont. Heat, rd Stage (Y,Y,W) Single-Speed Units The first stage of resistance heat is energized 0 seconds after W input, and with continuous rd stage demand, the additional stages of resistance heat engage sequentially every minutes. Heat, rd Stage (Y,Y,W) Dual apacity Units The st stage of resistance heat is energized 0 seconds after W input, and with continuous rd stage demand, the additional stages of resistance heat engage sequentially every minutes. Emergency Heat (W only) The blower is started on high speed, and the first stage of resistance heat is energized 0 seconds after the W input. ontinuing demand will engage the additional stages of resistance heat sequentially every minutes. ooling Operation In all cooling operations, the reversing valve directly tracks the O input. Thus, anytime the O input is present, the reversing valve will be energized. ool, st Stage (Y,O) The blower motor and hot water pump are started immediately, the loop pump(s) is energized seconds after the Y input is received. The compressor will be energized (on low capacity for Dual apacity units) 0 seconds after the Y input. The EM blower will shift from low to medium speed seconds after the Y input (% of medium speed if in dehumidification mode). ool, nd Stage (Y, Y, O) Single Speed Units The blower changes to high speed (% of high speed if in dehumidification mode) seconds after the Y input (EM only). ool, nd Stage (Y, Y, O) Dual apacity Units The second stage compressor will be activated seconds after receiving a Y input as long as the minimum first stage compressor run time of minute has expired. The EM blower changes to high speed seconds after the Y input. (% of high speed if in dehumidification mode). Blower (G only) The blower starts on low speed (PS ON). egardless of blower input G from thermostat, the blower will remain on low speed for 0 seconds at the end of each heating, cooling or emergency heat cycle. A DIP switch on the Envision control allows field selection of % reduced blower speeds for cooling in the dehumidification mode or medium and high blower speeds for cooling in the normal mode. NOTE: Blower speed can change automatically only with an EM Motor. EM Airflow Selection DIP Switches (SW) A -position DIP switch package on the Envision control allows the airflow levels to be set for low, medium and high speed. (efer to Blower Performance Data - EM Motor). Only three of the DIP switches can be in the on position. The first on switch (the lowest position number) determines the low speed blower setting. The second on switch determines the medium speed blower setting, and the third on switch determines the high speed blower setting. Lockout onditions During lockout mode, the appropriate unit and thermostat lockout LEDs will illuminate. The compressor, loop pump, hot water pump, and accessory outputs are de-energized. Unless the lockout is caused by an EM low PM fault, the blower will continue to run on low speed. If the thermostat calls for heating, emergency heat operation will occur. All lockout modes can be reset at the thermostat after turning the unit off, then on, which restores normal operation but keeps the unit lockout LED illuminated. Interruption of power to the unit will reset a lockout without a waiting period and clear all lockout LEDs. High Pressure This lockout mode occurs when the normally closed safety switch is opened momentarily (set at 00 psi). Low Pressure This lockout mode occurs when the normally closed low pressure switch is opened for 0 continuous seconds (set at 0 psi). Freeze Detection (Water Flow) This lockout mode occurs when the freeze thermistor temperature is at or below the selected freeze sensing point (well 0 F or loop F) for 0 continuous seconds. ondensate Overflow This lockout mode occurs when the condensate overflow level has been reached for 0 continuous seconds. Blower PM The control board monitors blower PM to sense operation. This lockout mode occurs if the blower PM falls below the low PM limit (00 PM) for 0 continuous seconds (EM only). 0

31 Envision ontrols - Premier cont. DIP Switch Settings Prior to powering unit, ensure that all DIP switches on SW and SW are set properly according to the tables below. FATOY SETUP DIP SWITHES (SW) DIP SWITH NUMBE DESIPTION OFF POSITION ON POSITION SW - Dual apacity/single-speed onfigures the control for single-speed compressor operation or dual capacity operation. Dual apacity Operation Single-Speed Operation SW - Zoned/Finish on Second Stage This switch allows the unit to down stage with the thermostat when off and finish with second stage when on. Finish on second stage reduces stage changing in reciprocating dual capacity compressors. Normal - All Other Systems Finish on nd - Unzoned Dual apacity E Series or Premier Speed SW - No PM/PM onfigures the control to monitor the PM output of an variable speed EM blower motor. When using IntelliZone or a PS blower motor, the control should be configured for NO PM sensing. PS Blower/PM Monitoring Disabled EM Blower/PM Monitoring Enabled SW - Electric heat and Variable Speed EM Allows backward compatibility with older P Series. In the Off position this switch allows older electric heat board (P0A0) and older EM (square end) compatibility. On is for all newer EH board (PA0) and EM (round end). Old EH and Old EM Normal SW - On dual capacity units this switch allows stage change: on the fly when off, and minute delay when on. A delay is required on all reciprocating dual capacity units. Envision E Series or P Series FATOY SETUP DIP SWITHES (SW) DIP SWITH NUMBE DESIPTION OFF POSITION ON POSITION SW - Service Test Mode On the control, allows field selection of NOMAL or TEST operational modes. Test mode accelerates most timing functions times to allow faster troubleshooting. Test mode also allows viewing the UENT status of the fault inputs on the LED display. Test Mode Normal Speed Operation SW - Freeze Detection Sensing This DIP switch allows field selection of low source water thermistor fault sensing for well water (0 F) or antifreeze-protected ( F) earth loops. Loop Water Freeze Detection F Well Water Freeze Detection 0 F SW - Accessory elay Allows field selection of the accessory relay to operate with the compressor or blower. Acc elay Tracks Blower Acc elay Tracks ompressor SW - Blower Speed ontrol Allows field selection of reduced blower speed (% of selected medium and high speed variable speed EM only) for cooling in the dehumidification mode. Dehumidification Blower Speeds Normal Blower Speeds SW - Auxiliary Off Disables rd-stage Heating. Full emergency heat would still be available if needed. Disable Heating Stage Enable Heating Stage SW - Diagnostics Inputs Allows viewing the inputs from the thermostat to the control board such as Y, Y, O, G, W, SL-In on the LED display. Diagnostic Inputs Viewed at LEDs Normal Display Viewed at LEDs SW - Diagnostics Outputs Allows viewing the outputs from the control board such as compressor, reversing valve, blower, hot water pump, and loop pump on the LED display. Diagnostic Outputs Viewed at LEDs Normal Display Viewed at LEDs SW - Thermostat Selection onfigures the control for a pulsed lockout signal (omfortalk and FaultFlash thermostats) or continuous VA lockout signal. Pulsed L signal ontinuous L signal

32 Envision ontrols - Premier cont. Operation Logic Data Table OPEATION LOGI SINGLE SPEED UNITS HEATING OOLING Blower ON SL - IN ON STG STG STG EMEG STG STG ompressor On On On Off On On - - EM Normal Med High High High Med High Low - EM Dehumidify Med High High High % Med % High Low - PS On On On On On On On - ev Valve Off Off Off Off On On - - Loop Pump On On On Off On On - On Aux Heater Off Off Staged Staged Off Off - - Secondary - Out On On On Off On On - - Emerg LED Off Off Off On Off Off Off - T-Stat Signal Y Y, Y Y, Y, W W Y, O Y, Y, O G - DUAL APAITY UNITS ompressor-lo On Off Off Off On Off - - ompressor-hi Off On On Off Off On - - EM Normal Med High High High Med High Low - EM Dehumidify Med High High High % Med % High Low - ev Valve Off Off Off Off On On - - Loop Pumps On On On Off On On - On Aux Heater Off Off Staged Staged Off Off - - Secondary - Out On On On Off On On - - Secondary - Out Off On On Off Off On - - Emerg LED Off Off Off On Off Off - - T-Stat Signal Y Y, Y Y, Y, W W Y, O Y, Y, O G - Thermostat Displays Fault Flash When using a TAW0 or TPW0 thermostat and SW- is in the pulsing L position, FaultFlash will enable a user to view the thermostat and count the fault indicator flashes to determine the lockout condition the unit is experiencing. omfortalk When using a TPU0, 0 or 0 thermostat and SW- is in the pulsing L position, omfortalk will enable the user to view the thermostat and determine the fault. The thermostat can be configured to show either lockout text or lockout codes. The following tables show the codes that will be displayed on the different omfortalk and FaultFlash thermostats. FaultFlash Thermostats omfortalk Thermostats TAW0 and TPW0 Thermostats TPU0, TPU0 and TPU0 Thermostats Thermostat Display Lockout ode Lockout Description Thermostat Display Lockout ode Lockout Description Flashes High Pressure Fault "High Pressure" or "E" High Pressure Fault Flashes Low Pressure Fault "Low Pressure" or "E" Low Pressure Fault Flashes Not Applicable "E" Not Applicable Flashes Water Flow Fault "Water Flow" or "E" Water Flow Fault Flashes Not Applicable "E" Not Applicable Flashes ondensate Fault "ondensate" or "E" ondensate Fault Flashes Voltage out of ange "Voltage ange" or "E" Voltage out of ange 9 Flashes PM Fault "PM" or "E9" PM Fault 0 Flashes Not Available "omfort Alert" or "E0" Not Avaialble These thermostats can be configured to display the lockout condition "text" or error number. * A slow flash of second on and off means the heat pump microprocessor SW- is configured for "Test Mode" or thermostat is miswired.

33 Troubleshooting Standard Microprocessor ontrols To check the unit control board for proper operation: ) Disconnect thermostat wires at the control board. ) Jumper the desired test input (Y, Y, W, O or G) to the terminal to simulate a thermostat signal. ) If control functions properly: heck for thermostat and field control wiring (use the diagnostic inputs mode). ) If control responds improperly: Ensure that component being controlled is functioning (compressor, blower, reversing valve, etc.). Ensure that wiring from control to the component is functioning (refer to the LED Definition table below and use the diagnostic outputs mode). If steps above check properly, replace unit control. LED Definitions and Diagnostics Standard Microprocessor LED Drain Water Flow High Pressure Low Pressure Airflow Status DHW Limit DHW Off NOMAL DISPLAY MODE UENT FAULT STATUS DIAGNOSTI MODES INPUTS OUTPUTS OUTPUTS Field Selection DIPS SW- On SW- Off SW- NA SW- NA SW- NA SW- On SW- On SW- Off SW- On SW- Off SW- On SW- On SW- On SW- Off SW- Off Drain Pan Overflow Lockout Freeze Detection Thermistor (Loop < F, Well<0 F) Lockout High Pressure >00 psi Lockout Low Pressure <0 psi Lockout EM PM <00 PM Microprocessor Malfunction HWL Thermistor >0 DHW Pump Switch Off Drain Pan Overflow Freeze Detection Thermistor (Loop < F, Well<0 F) Y Y ompressor (On or Low) ompressor (On or High) High Pressure >00 O eversing Valve Blower Low Blower Medium Blower High Low Pressure <0 G Blower Aux Heat EM PM <00 PM W DHW Pump Aux Heat Not Used SL Loop Pump(s) Aux Heat HWL Thermistor >0 F DHW Pump Switch Off Not Used Aux Heat efrigerant Systems To maintain sealed circuit integrity, do not install service gauges unless unit operation appears abnormal. ompare the change in temperature on the air side as well as the water side to the Unit Operating Parameters tables. If the unit s performance is not within the ranges listed, and the airflow and water flow are known to be correct, gauges should then be installed and superheat and subcooling numbers calculated. If superheat and subcooling are outside recommended ranges, an adjustment to the refrigerant charge may be necessary. NOTE: efrigerant tests must be made with hot water generator turned OFF. Verify that air and water flow rates are at proper levels before servicing the refrigerant circuit.

34 Envision ontrols - FX0 (optional) FX0 Advanced ontrol Overview The Johnson ontrols FX0 board is specifically designed for commercial heat pumps and provides control of the entire unit as well as input ports for Open N, LonTalk, BAnet 9,00 Baud rate) communication protocols as well as an input port for a user interface. The user interface is an accessory item that can be used to aid in diagnostics and unit setup. A -pin low voltage terminal board provides terminals for common field connections. The FX0 ontrol provides: Operational sequencing High and low-pressure switch monitoring General lockout Freeze Detection ondensate overflow sensing Lockout mode control Emergency shutdown mode andom start and short cycle protection Short ycle Protection Allows a minimum compressor off time of four minutes and a minimum on time of two minutes. andom Start A delay of to 0 seconds is generated after each powerup to prevent simultaneous startup of all units within a building after the release from an unoccupied cycle or power loss. Emergency Shutdown A field-applied dry contact can be used to place the control into emergency shutdown mode. During this mode, all outputs on the board are disabled. Freeze Detection Field selectable for or 0 F (-9 or - ) Installation Options Standalone controlled by standard room thermostat Standalone with a Zone Temperature Sensor (must have user interface to change set points beyond the allowed +/- F) Integrated into BAS by adding communication module Main FX 0 Board Optional Plug-in ommunication Modules - (compatible with standard BAS protocols) Open N LonTalk BAnet 9,00 Baud rate) Display equires DLI ard/kit. Up to displays, either local and remote, or remote. (A -display configuration requires identical displays.) Local display can be up to meters from the controller, power supply, and data communication. emote display can be up to 00 meters from the controller. emote display must be independently powered with data communication done via pole shielded cable. ontrol Timing and Fault ecognition Delays Lead compressor ON delay...90 seconds (not applicable for single compressor models) Minimum compressor ON time... minutes (except for fault condition) Short cycle delay... minutes andom start delay seconds High pressure fault...< second Low pressure fault...0 seconds Freeze Detection fault...0 seconds ondensate overflow fault...0 seconds Low pressure fault bypass... minutes Freeze detection fault bypass... minutes Accessory Outputs Quantity. One cycled with blower, other with compressor. User Interface x 0 backlit LD.

35 Envision ontrols - FX0 cont. Optional FX0 Microprocessor and BAS Interface An optional Medium User Interface (MUI) for control setup and advanced diagnostics is available with some mounting kits, MUIK - Panel mount version and the MUIK - Wall mount version. The FX0 is a microprocessor based control that not only monitors and controls the heat pump but also can communicate any of this information back to the building automation system (BAS). This means that not only does the control monitor the heat pump at the unit you can also monitor and control many the features over the BAS. This clearly puts the FX0 in a class of its own. The control will enumerate all fault conditions (HP, LP, O, LO, and Freeze Detection) over a BAS as well as display them on a medium user interface (MUI). HP, LP, O and Freeze Detection faults can all be reset over a BAS. A Loss Of harge fault can not be reset or bypassed until the problem has been corrected. A MUI is invaluable as a service tool for the building service team. The unit can be commanded to run by a typical heat pump thermostat or run based on heating and cooling set points supplied by a BAS. The control board is wired with quick connect harnesses for easy field change out of a bad control board. All EM variable blower speed settings can be changed over a BAS or with a MUI. The control has an input programmed to enable field installed emergency heat in the event that the compressor is locked out. This input can also be commanded on from a BAS as needed. An alarm history can be viewed through the MUI and will be held in memory until the unit is power cycled. elative humidity can be read by a 0-VD humidity sensor that is displayed over the network. If you are using an EM blower motor the control can enable dehumidification mode based on a set point in the control. The dehumidification set point itself can also be changed over a BAS or with a MUI. Dehumidification mode can also be enabled by the BAS. Because the FX0 is not factory configured to read O levels, contact the factory for application assistance. The FX0 control has unused analog and digital inputs for field installed items such as air temperature, water temperature, O or current status switches. The control has unused binary and PWM outputs that can be commanded over the BAS for field use. Zone Sensors There are two options for zone sensors that can be used with the FX0 control. Both sensors use a Johnson controls A99 positive temperature coefficient type sensor. The TAXXJ0 has a set point adjustment now which will give the end user a +/- F adjustment from the set point as well as a push button that can be used for temporary occupancy. The control leaves the factory set to operate with a TAXXJ0 sensor and can be changed to read the TAXXA0 sensor through a building automation system or with a user interface. Standard Features Anti Short ycle High Pressure Protection Low Pressure Protection Freeze Detection Loss Of harge Detection andom Start Display for diagnostics eset Lockout at disconnect or through BAS Accessory outputs Optional BAS add-on controls DD Operation and onnection Other optional network protocol boards that can be added to the FX0 are: Johnson ontrol N LonWorks BAnet - 9,00 Baud rate - Limit devices to 0 on a single trunk line. ontrol and Safety Feature Details Emergency Shutdown The emergency shutdown mode can be activated by a command from a facility management system or a closed contact on BI-. The default state for the emergency shutdown data point is off. When the emergency shutdown mode is activated, all outputs will be turned off immediately and will remain off until the emergency shutdown mode is de-activated. The first time the compressor starts after the emergency shutdown mode has been de-activated, there will be a random start delay present.

36 Envision ontrols - FX0 cont. Lockout Mode Lockout mode can be activated by any of the following fault signals: refrigerant system high pressure, refrigerant system low pressure, freeze detection, and condensate overflow. When any valid fault signal remains continuously active for the length of its recognition delay, the controller will go into fault retry mode, which will turn off the compressor. After the ompressor short cycle delay, the compressor will attempt to operate once again. If three consecutive faults occur in 0 minutes during a single heating or cooling demand, the unit will go into lockout mode, turning off the compressor, enabling the alarm output, and setting the blower back to low speed operation until the controller is reset. If the control faults due to the low pressure input (BI-) being open during the pre-compressor startup check, the control will go into lockout mode immediately, disabling the compressor from starting and enabling the alarm output (BO-). The lockout condition can be reset by powering down the controller, by a command from the BAS, or by the holding the ES and eturn keys on the MUI for seconds. Low Pressure (BI-) The low-pressure switch shall be a normally closed (N) switch that monitors the systems refrigerant pressure. The input shall be checked seconds before compressor start up to be sure the pressure switch is closed and then ignored for the first minutes after the compressor output (BO-) is enabled. If the switch is open continuously for (0) seconds during compressor operation the compressor output (BO-) will be disabled. The compressor will not restart until the compressor short cycle time delay has been satisfied. ondensate Overflow The condensate overflow sensing circuit will monitor the condensate level as a resistance input to AI-. If the condensate water level rises resulting in the input resistance rising above the set point for the recognition delay period, the condition will be recognized as a fault. The condensate will be subjected to a (0) second lockout delay which requires that the fault be sensed for a continuous (0) seconds before suspending unit operation. Alarm Output (BO-) The alarm output will be enabled when the control is in the lockout mode and will be disabled when the lockout is reset. Freeze Detection (AI-) The freeze detection sensor will monitor the liquid refrigerant temperature entering the water coil in the heating mode. If the temperature drops below the freeze detection trip point for the recognition delay period, the condition will be recognized as a fault. The freeze detection trip point will be factory set for 0 F and will be field selectable for F by removing a jumper wire on BI-. The freeze detection fault condition will be bypassed minutes at normal compressor startup, to allow the refrigeration circuit to stabilize. If the freeze detection sensor becomes unreliable at any time compressor operation will immediately be suspended until the problem is corrected. This should be displayed as an alarm on the BAS and the MUI. This alarm will be reported a Water Low Temp Limit fault. Test Mode aising the zone temperature input (AI-) reading to 0 0 F or by holding the ES and down arrow keys on the MUI for seconds will put the control into test mode. In test mode the random start delay and the compressor fixed on delay time will both be shortened to seconds and the reversing valve will be allowed to cycle with out shutting down the compressor. If an MUI is connected to the control LED will flash and the words Test Mode Enabled will be shown on the LD display when the control is in test mode. Test mode will be disabled after a power cycle, 0 minute timeout, or by holding the ES and Up arrow keys on the MUI. Sequence of Operation Power Fail estart When the controller is first powered up, the outputs will be disabled for a random start delay. The delay is provided to prevent simultaneous starting of multiple heat pumps. Once the timer expires, the controller will operate normally. High Pressure (BI-) The high-pressure switch shall be a normally closed (N) switch that monitors the systems refrigerant pressure. If the input senses the high-pressure switch is open it must disable the compressor output immediately and count the fault. The compressor minimum on time does not apply if the highpressure switch opens. The compressor will not restart until the compressor short cycle time delay has been satisfied.