CRSO SERIES CEAFO SERIES

Transcription

1 C O M I T A L E N A T I O N A L I N C. CRSO SERIES CEAFO SERIES Engineering/Operation & Installation Instructions 1683 B Winchester Road, Bensalem, PA Phone: Fax: sales@comitalenational.com Original Equipment Manufacturer of Custom Packaged Terminal Air Conditioners and National H.V.A.C. Parts Distributor

2 Table of Contents Table of Contents New Construction, Additions or Renovations Replacing With The CRSO/CEAFO Series Engineering Information - Specifications Product Code Sheet Receiving Equipment/ Dimensional Data Wall Opening Requirements Installation - Considerations Masonry and Thick Wall Applications General Information Electrical Service Typica Installation Installation Instructions Louver Frame Installation Instructions Wall Sleeve Extensions Panel And Thin Wall Applications Chassis Louver/Start Up - Equipment Sub Base Hydronic Heat Section Electrical Sub Base Installation Scheduled Maintenance Recommended Spare Parts Troubleshooting Spare Parts Warranty Standard Warranty Optional Four Year Standard Warranty Card PTAC Check, Test and Start up Worksheet Notes Page 2

3 The Ideal Solution: New Construction, Additions or Renovations Evolution of the 16" 44" Packaged Terminal Air Conditioners and Heat Pumps: In 1970, McQuay designed and introduced the first Packaged Terminal Air Conditioner (PTAC) system with an integrated heating and cooling chassis. The type EA series became a best seller with over 350,000 units sold worldwide. In 1976 McQuay introduced the first air-to-air packaged terminal heat pump (PTHP) with the type RS unit. The RS offered unprecedented energy savings in the midst of the energy crisis of that period. CNI is proud to continue that tradition of design excellence with the introduction of our highly efficient and quiet CRSO/CEAFO Series - Tru-Fit PTAC/PTHP Type EA (1970) Type S (1976) Superior zoned heating and cooling: Hotel and motel guest rooms Hospitals and assisted living facilities Apartments, college dormitories and military barracks Offices and other spaces in a variety of buildings CNI CRSO/CEAFO Series is the right choice! The broadest selection of features and customizable options allows you to choose the ideal unit for each space in your building. High energy efficiency and COP ratings provide lower operating costs. R-407-C refrigerant with no ozone depletion potential or phase-out date. Reliable cooling/heating and low operating sound levels maximize comfort. Proven institutional grade construction withstands demanding applications for long life. Easy to install and maintain. Engineered and produced in the U.S.A. by CNI. Type ES Type RS/MQT Model PMES Model PMRS (1990's) (2000) CNI CRSOC (Current) CNI CRSOH (Current) Replacement 16" 44" Flat top Page 3

4 REPLACING WITH THE CRSO SERIES CRSO/CEAFO SERIES COOLING/ELECTRIC COOLING/HYDRONIC CRSOH SERIES HEAT PUMP/ELECTRIC Type S series, this unit was called the type RS. The RS is a drop in replacement for the old type EA series units. When replacing the old EA series with the new CRSO series a new front panel is required. The return air of the type EA series units enters the chassis around the perimeter of the front panel. The new C. N. I. CRSO series requires bottom return air. This new front will allow the new CRSO to be floor mounted in Renovations, Additions as well as new construction. When replacing a type S series unit, first determine if it is a heat pump {Type RS}, an electric heat unit {TYPE ES} or a hydronic heat unit {TYPE S}. If it is a type ES, check with the customer to determine the new type of replacement {CRSOC or CRSOH}. The type CRSOC and the type CRSOH both slide in to the ES wall sleeve with no modifications. If the existing unit has hydronic heat {Type S} it is best to replace it with another hydronic heat chassis {CRSOC}. If for some reason the owner wants to convert the unit to a heat pump {CRSOH} unit will retrofit the existing installation. If this is done, it may require some modifications. The type S hydronic unit utilizes an oversized, separable room cabinet that also encompasses the top mounted hydronic heating coil. If the coil is removed because it is no longer needed on the CRSOH heat pump, a field fabricated duct must be supplied. This duct fits between the type CRSOH unit discharge and the existing room cabinet discharge grill. If the coil is simply dis connected but left in place a field fabricated duct is unnecessary. CRSOC & CRSOH Chassis Wall Sleeve Front Panel CAUTION If the current unit is a type S series hydronic unit, it probably has small gage wiring for incoming power. Make certain the new chassis amp draw does not exceed the limitations of the existing wiring and breaker. NOTE The original design of the type EA series conditioners was designated with the letter A in the fifth position. If the unit in need of replacement is an A vintage there is no current replacement. The wall sleeve for this unit was 15 ¾ high and 45 1/8 wide with a depth that was sized for wall thickness. This unit also had separable room cabinet that was also sized to match wall thickness. In this case consult with factory for a suitable replacement. EA To CRSOC & CRSOH Conversion Front And Floor Mount Front UNIT CORD PLUG EA CHASSIS TO A CRSO CHASSIS The electrical receptacle for the type EA was sized for the maximum amp draw of the unit. If the unit has a sub base, it will have a receptacle. Make certain the replacement type CRSOC chassis heater is sized for the receptacle that is in the sub base. If a larger heater is desired, check the building wiring to insure it can handle the load. Page 4

5 Integral Style - Type CRSO Series Replaces Original Singer and McQuay Type EA-RS (S, ES, MEA, MQA,MQT, PMES, PDAC and PDHP) and PMES Cooling and Heatpump Chassis. CONTROL BOX x 42 5 / / / 8 Front View 18 1 / 2 Side View Note: Many other Singer McQuay Replacement chassis are also available. Model Numbers Voltage COOLING (HI-FAN SPEED) 1 Total Capacity (BTUH) Full Load Amps Watts Cooling EER (BTUH/Watt) HEATING Capacity (BTUH) Watts Heating N/A N/A N/A COP (Coefficient of Performance) N/A N/A N/A HYDRONIC HEATING Hot Water (BTUH) 2 12,600 12,600 12,600 14,300 14,300 Steam (BTUH) 3 12,600 12,600 12,600 18,900 18,900 KILOWATTS COOLING/HEAT PUMP CHASSIS W/O Auxiliary Heating With Auxiliary Heating 2.5 KW to 3.0 KW KW to 4.0 KW KW to 5.3 KW Steam or Hot Water F DB/67F WB air entering evaporator; 95F DB/75F WB air entering condenser per ARI Std F EWT/180F LWT at 2 GPM 70F EAT. 3 2 PSI 70F EAT saturated steam. CNI reserves the right to modify specifications without prior notice in its efforts to improve product quality.

6 Integral Style - Type CEAFO Series Comitale National, Inc. CNI 1683 B Winchester Road Bensalem, PA FAX Visit our website cnitrufit@aol.com Integral Style A complete, self-contained chassis consisting of motor assembly, heating and cooling system, along with a control box. Replaces Original Singer and McQuay Series EA-F CoolingTYPE and CEAF0 SERIES Heatpump Chassis Replacement Packaged Terminal Air Conditioners Replaces Original Singer and McQuay Series EA-F Cooling and Heatpump Chassis CONTROL BOX x 42 5/8 81/2 43 7/ /2 Model Numbers Voltage COOLING (HI-FAN SPEED)1 Total Capacity (BTUH) Full Load Amps Watts Cooling 115 A lower cost alternative to all season comfort conditioning. More Simpler Installation 07 Reliability Less Maintenance Higher Efficiency A Quieter Solution A Tru-Fit Quality and Comfort for many years to come!! 277 CNI7300 for more competitive pricing! Call details 9000 and Ask about our Quick Shipment Program Think all of930 your930 replacement CNI 740for HVAC 1240parts 1240 needs NEMA Receptacles Mating Power Receptacles for CNI Integral Style Units HEATING Capacity (BTUH) NEMA 5-15R NEMA 6-15R NEMA 5-20R NEMA 6-20R NEMA 6-30R NEMA 7-20R Watts Heating N/A (250V) (115V) N/A (250V) 920 N/A (115V) (250V) (277V) COP (Coefficient of Performance) N/A N/A N/A HYDRONIC HEATING W 12,600 12,600 12,600 14,300 Hot Water (BTUH)2 12,600 12,600 18,900 Steam (BTUH) 3 Service: 15 Amp Service: 15 Amp Service: 20 Amp 12,600Service: 20 Amp Service: 30 Amp Service: 20 Amp Voltage: 115V Voltage: 208/230V Voltage: 115V Voltage: 208/230V Voltage: 208/230V Voltage: 277V KILOWATTS COOLING/HEAT PUMP CHASSIS W/O Auxiliary Heating With Auxiliary Heating 2.5 KW to 3.0 KW KW to 4.0 KW KW to 5.3 KW Steam or Hot Water F DB/67F WB air entering evaporator; 95F DB/75F WB air entering condenser per ARI Std F EWT/180F LWT at 2 GPM 70F EAT. reserves the right to modify specifications without prior notice in its efforts to improve product quality ,300 18, PSI 70F EAT saturated steam. CNI

7 CRSO/CEAFO Series Engineering/Specifications COOLING CHASSIS The cooling chassis shall contain the complete refrigeration system consisting of compressor, condenser, evaporator and separate fan motors for the condenser and evaporator sections; as well as the controls. A space for inclusion of electric heating elements. It shall be 100% factory run tested prior to shipment from the factory. The chassis sheet metal shall be a minimum of 18 gauge G-90 grade galvanized, zinc phosphatized steel. The chassis base pan shall be a minimum of 16 gauge galvanized steel. The evaporator and condenser coil construction shall be copper tubes with aluminum ripple fans and mounted for accessible cleaning. Condensate disposal shall be accomplished by atomization and entrainment of water particles in the condenser air stream with evaporation on the condenser coil. Slinger rings and propeller type are not acceptable. The refrigeration circuit shall be precharged and shall utilize a rotary compressor, PSC motors with automatic reset overload. Compressor shall be equipped with suction and discharge mufflers. Compressor capacitor shall be located in control box only. Refrigerant metering shall be accomplished by automatic expansion valve. Capillary tubes are not acceptable. The unit shall operate at capacity to 35 F outdoor, with no frosting of the evaporator, short cycling of the compressor or liquid slugging. A hot gas bypass valve shall be used to protect the evaporator coil from frosting due to clogged filter, or low air flow. Factory installed sheathed electric heating coils shall be mounted in the outlet air stream of the evaporator fan and ahead of the evaporator coil. Automatic reset thermal cut-off shall protect the element from overheating. Heat requirement of 4 KW or more shall be two staged to operate with the thermostat. Two row serpentine coil, preformed tubing and normally opened motorized two-position control valve shall be provided for field installation and piping to hot water or steam service. Right hand supply/return connections. Control valve shall be two-way type and power lead shall plug into the control box. Airflow system shall include separate fan motors for the condenser and evaporator sections. The condenser fan motor shall be a single speed totally enclosed, permanently lubricated fan motor. The condenser fan wheel shall be aluminum formed single inlet centrifugal type. Plastic or polymer are not acceptable. The indoor fan motor shall be a double shafted, two-speed, totally enclosed; permanently lubricated fan motor must be position on the indoor side of the bulkhead so as to be completely within the conditioned filtered airstream. The indoor blower fan shall be forward-curved tangential design to provide even airflow across the evaporator coil. OPTIONAL The cooling/heating chassis can be equipped for a pressurized automatic ventilation air. An outdoor damper can be positioned on the discharge side of the condenser fan to insure a positive supply of ventilation air whenever called for. The damper must close when the unit stops. Outdoor air shall be filtered at all times. CONTROLS The standard controls shall be self contained within the cooling chassis consisting of a manual Idle-Cool-Heat-Hi-Low selection along with a two stage thermostat. Automatic Ventilation can be controlled by a means of a rocker switch at the control panel. Optional control arrangements are available, consult factory. ROOM CABINET/WALL SLEEVE/FRONT PANEL TThe wall cabinet which houses the cooling chassis shall be of 18 gauge phosphatized steel and finished with two coats of baked textured acrylic enamal. The wall cabinet shall also be insulated top and sides, with a closed cell neoprene rubber insulation. The wall cabinet shall be designed for either wall installation or flush floor installation, without a regard for unit voltage, with the exception of 265V Chassis. The wall cabinet is provided with extruded aluminum louver finished in a clear anodized. Room cabinet/wall sleeve and front panel color is light beige. Special colors are available, consult factory. Installed height of the room cabinet/wall sleeve shall not exceed 16 3/8 {416mm}. Installed height of room cabinet/wall sleeve with subbase shall not exceed 20 3/8 {518mm} for electric heat or 24 3/8 {619mm} for hydronic heat. The discharge grill assembly and access door are part of the room cabinet/wall sleeve design. The discharge grill can be stamped or drop in heavy gauge aluminum discharge grill. The discharge is noted both for its strength and appearance. The grill is inclined at a fixed angle of 15 from vertical to provide optimum air circulation. Front Panel and Return Air Option - "CRSO/CEAFO" series can use 2 different types of front panels. The standard front panel is a solid front panel. The second type of front panel incorporates a stamped return air grill this is used when replacing an original McQuay or Singer type "EA" with the C. N. I "CRSO/CEAFO" series. This particular front panel will also allow the C. N. I. "CRSO/CEAFO" series unit to be floor mounted. SUBBASES - The "CRSO/CEAFO" series unit utilizes two different subbases. The electrical subbase requires a minimum of 4 3/8 from the front edge of the wall sleeve to the finish wall. The hydronic subbase requires 1" minimum from the front edge of the wall sleeve to the finished wall. CNI reserves the right to modify specifications without prior notice in its efforts to improve product quaility. Page 7

8 Product Code Sheet (Z in any box = Special) CRSO C D 1 0 RS Product Code Chassis Type H = Heatpump C = Cooling only Nominal Size BTUH BTUH BTUH BTUH BTUH Electrical Service 3 = 115/60/1 4 = 208/230/60/1 5 = 277/60/1 Design Sequence RS = Rotary Compressor AS = Reciprocating Compressor AZ = Special Control Options 0 = None 1 = Night Set Back 2 = Remote Switching with Night Setback 3= Fan Cycle Switch (Heating Mode) 4= Auxiliary - Permanent Power *Voltage needs to be determined for primary (Hydronic Heat Only) Z = Consult Factory Thermostat Nominal Size 0 = Cooling only, Component Style Chassis 1 = Unit Mounted Manual Changeover 2 = Wall Mounted, Manual Changeover *3 = Unit Mounted Automatic Changeover *4 = Wall Mounted, Automatic Changeover 5 = Non-Programmable Wireless Wall Mounted 6 = Programmable Wireless Wall Mounted *Not available on HP chassisk Heat Source 0 = Cooling only D = Hydronic Heat A = 2.5/3.0 KW B = 3.3/4.0 KW *C = 4.3/5.3 KW *Not available sizes 07 and 09 Z = Specials Outlined in Spec. The Sample unit nomenclature above indicates a C.N.I. colling chassis replacement for Singer and McQuay "RS, MQT, PMES, PMRS" Series, 9,000 BTUH, /60/1, Hydronic heat, unit mounted manual change over controls and no control options. Page 8

9 Receiving Equipment Before signing the freight bill, carefully examine the units and note any shortages or damages on the freight bill. The purchaser is responsible for filing the necessary claims with the carrier. Concealed damage which was not discovered until after unloading should be reported to the carrier within 15 days after receipt. C.N.I. responsibility ceases upon delivery of material in good order to a carrier. To help avoid concealed damage, the units must be shipped, handled, and stored right side up as clearly marked on the container. If the units must be stored prior to installation, they should be stored within the carton in a clean, dry, protected area. When ready for installation, save the carton and use the carton shell to protect the cabinets until construction, painting, etc., is completed. A complete PTAC unit is normally shipped in two cartons: one carton contains the cabinet/wall sleeve, front panel, louver and subbase; the other carton contains the intergal chassis. Chassis The chassis is a completely self-contained, intergal heating/cooling with optional ventilation control. It houses the refrigeration components, air handling components, electric heater (if applicable), and controls. A single intergal chassis requires less on-site handling during installation and service periods. Dimensional Data CRSO/CEAFO Series Finished Wall Line 10 1 /2" (267mm) Minimum Top View A = Louver thickness: 3/8" (10mm) stamped, 1 1 /8" (29mm) extruded architectural 44 7 /8" (1140mm) 1/2" (13mm) 20" (508mm) A 16 3 /8" (416mm) 1 11 /16" (43mm) 41 1 /2" (1054mm) Front View 3" (76mm) or 4" (102mm) 6 1 /4" (159mm) Side View 4 1 /4" (108mm) to 13 3 /4" (349mm) Page 9

10 Wall Opening Requirements The rough opening should measure 16 5 /8" high x 45 1 /8" wide. When using a louver frame, the opening must measure 16 7 /8" x 45 3 /8". Louver frames should be used for panel wall and thin wall applications to assure positive anchoring to the wall (See Page XX). When a elecrical subbase is used, the opening must start 3" to 4" above the finished floor (including carpeting) to match the height of the subbase selected. The subbase is available in 3" or 4" heights and has adjustable leveling legs that provide up to an additional 1" height. A 3" or 4" subbase is required for 265V models and is optional for 208/230V models. Figure 3. Frame and Brick Construction 16 5 / 8 " High 45 1 / 8 " Wide Cabinet/Wall Sleeve Rough Opening 16 3 /8" x 44 7 /8" Cabinet/Wall Sleeve Lintel (by others) Wall Construction Types Figure 1. Panel Wall (Thin) Construction Concrete Pillars Steel Studs 16 5 /8" x 5 1 /8" Floor Cabinet/Wall Sleeve Rough Opening or 16 7 /8" x 5 3 /8" When using a Louver Frame (See page 14 for Installation) Figure 2. Masonry Wall (Thick) Construction Installation Considerations The CRSO/CEAFO Series 16" x 44" Unit is designed and built for through-the-wall installation in either existing or new buildings. Each conditioner consists of the following components identified in their typical installation sequence: 1. Subbase Optional on 208/230V, standard on 265V, shipped in its own carton. 2. Louver Frame Optional, shipped five (5) per carton. 3. Room Cabinet/Wall Sleeve with Front Panel and Filter Shipped in palletized carton. 4. Outdoor Louver Shipped in its own carton. IMPORTANT Air flow required for PTAC units must not be restricted by exterior plants or walls. Plants or shrubs must not be planted in close proximity to the outside grille of the PTAC unit. Vegetation planted too close to grilles will cause discharge air to be recirculated, thereby increasing electrical consumption. Warranty will be voided if it is determined that the compressor life is shortened from overheating due to close proximity of outside obstructions. Wall Sleeve Extension (See page 9 for Installation) 16 3 /8" x 44 7 /8" Cabinet/Wall Sleeve Note: Discharge air restrictions include, but are not limited to: Vegetation Concrete walls or barriers Overhangs that do not allow discharge air to rise Installation of bug screen of any kind 5. Heating/Cooling Chassis Shipped in palletized carton. Page 10

11 Masonry and Thick Wall Applications Preparation of the wall opening In new construction, the room cabinet/wall sleeve can be built into the building wall as it progresses, or openings can be left for later installation. A lintel by others must be used to support any brick or masonry work above the conditioner. Set the room cabinet/wall sleeve in soft mortar and position it in the wall opening. The rear face of the conditioner should be recessed from the outside edge of the wall opening by the depth of the louver to be installed. When using the flanged stamped louver, the rear flange of the room cabinet/wall sleeve will be flush with outside edge of the wall opening. The center of gravity of the conditioner is 9 1 2" from the rear face. For wall-mounted conditioners, the center of gravity must be within the load bearing portion of the wall; otherwise, support is required. Level the room cabinet/wall sleeve side to side and pitch down 1/4 bubble to outside. Securely fasten the room cabinet/wall sleeve in the wall from inside the cabinet through the sides and/or top on the outdoor side of the weather seal. Make sure the cabinet is not distorted. Never secure through the bottom of the cabinet. For installations using a subbase, level the room cabinet/wall sleeve with leveling bolts provided with the subbase. Attach the subbase to the room cabinet/wall sleeve per instructions provided with the subbase. Refer to Page After the room cabinet/wall sleeve is installed and leveled side to side and pitched down 1/4 bubble to the outside, secure it and the louver frame to the wall with screws driven through the sides and top of the room cabinet/wall sleeve outward through the louver frame. Never secure the frame through the bottom, as it may cause leaks. A 5 32" diameter hole has been added to each side of the wall sleeve as a provision for securing the sleeve in the wall opening. Each hole is located 2" down from the top and 2" in from the rear of the sleeve. (See Figures 4 and 3.) These holes or other non-perforated locations in the sides and/or top of the sleeve may be used to fasten the sleeve to the wall from the inside. Never secure the room cabinet/wall sleeve to the wall through the bottom. 5. Caulk the outdoor joint between the room cabinet/ wall sleeve and the wall opening (or louver frame): top, bottom and both sides. Do not permit caulking to block the weep holes. Figure 4. Figure 5. Room cabinet/ wall sleeve Finished Floor Finished Wall Finished Floor Optional Subbase 2" Finished Wall Subbase 5 32" Dia. (typical of 2) 6. Install the outdoor louver. Holding the louver with a wire loop, or other similar means, push the louver out through the rear opening in the room cabinet/wall sleeve and pull the louver back to the rear face so that the louver studs pass through the holes in the room cabinet/wall sleeve flange. Attach the louver with the washers and nuts, and securely tighten the louver in place. 7. Cut the shipping carton as necessary to cover the installed room cabinet/wall sleeve until ready for use. 2" Lintel by others Outside wall Louver Depth Mortar Base Outside wall Note: Subbase is optional on 208/230V units, but standard on 265V. Louver frame is optional on all units " (86mm) Louver Depth Louver Frame 5 32" Dia. (typical of 2) Page 11

12 General Information Electrical Service Electric Service All wiring should be done in accor-dance with local and national electrical codes. Electric service for the CRSO/CEAFO unit is via a receptacle type outlet furnished with 265V units. 208/230V units are equipped with a plug and cord set to plug into a recep-tacle which is supplied by others and field installed. The use of an extension cord to increase the length of the plug/cord set furnished as a part of the unit is not recommended. Suggested Outlet Locations 3. CRSO/CEAFO Series with Subbase Required with 265V units, optional with 208/230V units. The subbase includes an electrical compartment in the right front corner providing brackets for mounting a receptacle directly beneath the base pan knockout. There is no need for a junction box when this method is used (see Figure 8). Since 265V units require a subbase, the electrical cord is only long enough to reach a receptacle in the subbase. In all cases, excess cord should be rolled up an stored in the conditioner. Fig. 8. Conditioner with Subbase 1. Floor Mounted Conditioners 208/230V units only. Mount an outlet in the wall to the right or left of the conditioner (see Figure 6). The chassis cord has a 72 inch usable length from where it exits from the lower right of the front panel. Fig. 6. Floor-mounted Conditioner Cabinet/Sleeve Base Pan - Top View " (1140mm) 2. Wall Mounted Conditioner 208/230V units only. A receptacle is generally mounted beneath the conditioner on, or recessed in, the wall so it is concealed by the conditioner overhang (see Figure 7). The chassis cord has a 18 inch usable length from where it exits from the lower right of the front panel. 20" (508mm) Knockout 8 1 4" (210mm) 2 3 4" (70mm) 4 1 8" (105mm) 1 1 2" (38mm) Fig. 7. Wall-mounted Conditioner Note: Remove knockout from base pan if subbase is used. Page 12

13 Typical Installation CRSO/CEAFO Series The CRSO/CEAFO Series conditioner can be mounted flat on the floor for the lowest possible silhouette, off the floor at any convenient height, or on an optional universal telescopic subbase which adjusts to any wall thickness. Above-the-floor installation Typical room cabinet and wall sleeve Finished Wall Room Cabinet/Wall Sleeve Finished Floor Subbase 3 3 /8" (86mm) Louver Depth Louver Frame Outside Wall Installation on telescopic subbase 2" 2" Finished Wall 1/2" (13mm) Finished Wall Line 10 1 /2" (267mm) Min. Lintel (by others) 5/32" Dia. (typical of 2) Louver Depth Flat-on-the-floor installation Mortar Base Outside Wall Finished Floor Optional Subbase Requires Front Panel with stamped Return Grill Notes: 1. Subbase is optional in 208/230V unit, but standard on 265V Louver frame is optional on all units. 2. If a CRSO /CEAFO Series chassis is being installed in an existing bottom return S/RS/MQT cabinet/wall sleeve, the retaining bracket, located in the center top and inside the cabinet/wall sleeve, must be removed to allow the chassis to be completely inserted into the cabinet/wall sleeve. It is held in place with a 1/4" philips head screw. Page 13

14 Installation Instructions Louver Frame/Wall Sleeve Extension When a louver frame is used, it must be installed prior to the room cabinet/ wall sleeve, and it must be level and square (see Figure x). If the louver frame is to be installed in a panel wall, install it at the same time as the room cabinet/wall sleeve. 1. Apply caulking compound on the surfaces of the louver frame s four flanges which will come in contact with the wall. Add caulking as required for weather tight seal. Wall Sleeve Extension The standard wall sleeve will accommodate the maximum wall thickness described in Table 5. For thicker walls, wall sleeve extensions are available from the factory. CRSO/CEAFO Series - Cabinet/Wall Sleeve Extension Figure 9. Louver frame installation 18 5 /8" (473mm) 45" (1143mm) 16 1 /2" (419mm) 3 3 /8" (95mm) 47 1 /8" (1197mm) Note: Wall Sleeve rough opening when using a Louver Frame must be 16 5 /8" 45 1 /8" 2. Place the louver frame in the wall opening from the exterior of the building, and apply firm pressure so that the caulked frame flanges are snug against the exterior of the building. Secure the louver frame to the wall if desired. Table 5: Maximum Wall Thickness without Sleeve Extensions Maximum Wall Thickness Louver No Standard Type Subbase Subbase Architectural 1 /8" 14 7 /8" 10 3 /8" 3. Secure the louver frame to the wall through the sides and top. Never secure the frame through the bottom as it can cause leaks. 4. Coordinate the remaining instructions with the room cabinet/ wall sleeve installation instructions. (Pages 11 or 15) 5. Drill four (4) 1/8 (3mm) diameter holes through the sides of the wall sleeve and through the flange of the louver frame. Attach the collar with four (4) #8x 3 /8 self-tapping screws provided. Do not drill holes in the bottom of the wall sleeve. 6. Caulk the seam between the louver frame and the wall watertight. Page 14

15 Panel and Thin Wall Applications The CRSO/CEAFO conditioner can be successfully installed in various ways. However, this instruction is based on the use of both a subbase and a louver frame. 1. Install the subbase... Refer to pages Position the room cabinet/wall sleeve in the louver frame opening and on the subbase. The rear face of the cabinet should be recessed from the outside edge of the louver frame by the depth of the louver to be installed (see Figure 9 on page 14). 3. Level the subbase with leveling bolts provided. Attach the subbase to the room cabinet/wall sleeve per instructions on page After the room cabinet/wall sleeve is leveled side to side and pitched 1/4 bubble to the outside, secure the louver frame to the wall with screws driven through the sides and top of the room cabinet/wall sleeve outward through the louver frame. Never secure the frame through the bottom as it may cause leaks. Important: The chassis must be fully seated to provide a proper weather seal. When properly installed, the front edge will line up with the front edge of the cabinet/wall sleeve 1. Remove the chassis from the carton and check for damage. 2. Compare the nameplate information to the job requirements and check the voltage supplied to the unit before installing the chassis. 3. Remove all debris from the cabinet/wall sleeve and check to see that the rear seal strip is securely attached Spin the fan wheels to make sure they rotate freely, and they are tight. Check the copper tubing in the compressor compartment. If required, bend carefully to eliminate contact with other tubing or the compressor shell. Install the chassis in the wall sleeve. Check the seal where the gasket on the discharge plenum seals against the flange on the wall sleeve. The seal should be in complete contact with the wall sleeve flange. Chassis 5. Caulk the outdoor joint between the room cabi-net/ wall sleeve and the louver frame: top, bottom, and both sides. Do not permit caulking to block the weep holes. 6. Install the outdoor louver. Holding the louver with a wire loop or other similar means, push the louver out through the rear opening in the room cabinet/wall sleeve and pull the louver back to the rear face so that the louver studs pass through the holes in the room cabinet/ wall sleeve flange. Attach the louver with the washers and nuts provided, and securely tighten the louver in place. 7. Cut the shipping carton as necessary to cover the installed room cabinet/wall sleeve until ready to use. 9. Install the front panel before operating the unit. Fasten the panel at the lower corners using the screws provided. 10. See Figure 11 to check the weather seal. CAUTION Cleaning compounds can permanently damage unit. Do not spray cleaning compounds onto the discharge grille, return air opening or unit controls. Clean unit by wiping with a damp cloth. When using cleaning compounds on carpets, floors or walls, turn the unit off to avoid drawing vapors into the packaged terminal unit. Figure 13. Perimeter weather seal! CABINET/WALL SLEEVE WEATHER SEAL 6. Connect the main power, the control wiring (if furnished), and the motorized valve wire harness (hydronic heat model only). 7. Install the filter before operating the unit. INSIDE VIEW (REAR OF WALL SLEEVE) Note: Check the weather seal around the entire perimeter for proper adhesion to the cabinet/wall sleeve. Page 15

16 Louver Louver The attractive, rugged architectural louver is extruded aluminum and is finished natural and clear anodized (optional colors are also available). Louvers by others are acceptable as long as they meet factory specifications. They must have a minimum free area of 70% or a pressure drop not exceeding.05 in. w.g. at 300 fpm face velocity, and a blade design that will not cause recirculation of condenser air. Architectural Louver Louver Weight Architectural = 8 lbs. (3kg) Notes: 1. Optional architectural extruded aluminum. 2. Louver can be installed from inside the building. NOTICE Airflow required for PTAC units must not be restricted by exterior plants or walls. Plants or shrubs must not be planted in close proximity to the outside grille of the PTAC unit. Vegetation planted too close to grilles will cause discharge air to be recirculated, thereby increasing electrical consumption. Warranty will be voided if it is determined that the compressor life is shortened from overheating due to close proximity of outside obstructions Note: Discharge air restrictions include, but are not limited to: Vegetation Concrete walls or barriers Overhangs that do not allow discharge air to rise Installation of bug screen of any kind Outdoor louvers by others unless approved by the factory Equipment Start-up Initial start-up of the C.N.I. equipment by an experienced person is usually the responsibility of the installing contractor. This consists of inspecting and operating the equipment for all functions at the time of initial installation, and making adjustments as necessary. It also includes demonstrating its proper operation to the owners or their agents. Note that unless otherwise specifically agreed to in writing, there is no field labor or start-up service included in the price of the equipment. Optional Ventilation The introduction of outside air is controlled by an automatic damper. During normal operation, the damper will be open whenever the Heat, Cool, or Hi-Low control buttons are depressed. If the fans are not energized, the damper will be closed. An On-Off switch is provided so that the damper can be kept closed. The unit can be furnished with a concealed fan cycle switch on the control box. Before start-up, place this switch in the ON position. Continue start-up procedures as follows: 1. Check the main power supply to be sure there is power to the unit. 2. Open the control access door and press the button labeled IDLE. The fans should be energized. 3. Depress the Hi and Low buttons. The fan speed should change. 4. Depress the button marked Heat. Turn the thermostat knob completely counterclockwise. The electric heat elements or the hydronic valve should become energized and noticeable heat should be felt at the discharge grille. 5. Depress the Cool button and move the thermostat completely clockwise. The compressor and condenser fan should come on and the air from the discharge should feel cold. 6. Depress the IDLE button and all functions of the unit should stop. Caution: The IDLE button does not disconnect power to the unit. Before servicing the equipment, discon-nect the unit from the power source. Page 16

17 Subbase Hydronic Heat Section Hydronic subbase requires 1" minimum from the front edge of the wall sleeve to the finished wall. Figure 11. Side Channels _.._ Coil Connection Cover Plate Hydronic Heating Coil Optional Fused Disconnect Permanent Mesh Filter Louvered Front Panel Attach Capillary Tube Clip To This Screw Subbase Side Channel Adjustment Telescoping side channels are supplied to extend from the finished wall to the rear of the subbase heat section. The side channels are reversible to enable adjustment without cutting or breaking. Adjust the side channels as follows: 1. Measure the distance between the finished wall and the rear face of the subbase heat section. 2. Insert the side channel into the slot of the subbase heat section and telescope it the appropriate distance as measured in Step Slide the side channels into the sub base heat section and fasten securely with the screws provided. Assembling The Subbase Heat Section 4. Invert the subbase heat section and screw in the leveling legs. The holes provided for the leveling legs are extruded to eliminate the need for washers and nuts. The threads of the legs are self-tapping to assure a rigid fit. 5. Start the leveling leg into the extruded hole and apply a wrench to the head. Turn the leg into the hole the desired distance. Repeat this procedure until all the legs are installed. 6. Return the subbase heat section to the upright position and center it under the wall opening. Page 17

18 Plumbing The coil supplied with the subbase heat section can be used with hot water or steam heating. Piping rough-in can be done through the openings in the base, or through the back. The heating coil is supplied with¾" O.D. copper tubing for sweat connections. Hot water heating requires a normally open valve and steam heating requires a normally closed valve. To connect the valve to the heating coil, follow the steps listed below: 1. Remove the cover plate, located over the right end of the coil, for easier access to the supply and return connections. 2. Always pipe the valve to the supply side. If the heating medium is hot water, connect the supply (outlet of the valve) to the bottom connection and the return to the top connection. If the heating medium is steam, connect the supply to the top connection and the return to the bottom connection. The "inlet" port of the valve is connected to the water/steam source. 3. Sweat in the piping, valve and accessories (as specified by the design engineer) in the space provided under the heating coil. Plumbing and Electrical Connections Figwe 12. Hydronic subbase (shown with louvered subbase front panel removed) Electrical The electrical supply can also be roughed in to the subbase heat section either through the holes provided in the base or through the back. The receptacle is shipped in a separate carton to be field installed in the knockout provided, and wired in the junction box. Complete the installation as described below: 1. Remove the junction box cover plate. 2. Punch out the desired electrical knockout and connect the electrical supply conduit. 3. Connect power supply wires to the receptacle. Be sure to properly ground the electrical supply to the subbase using the green ground screw provided. 4. Mount the receptacle with screws provided and replace the junction box cover plate. After the plumbing and electrical work has been completed, the cabinevwall sleeve can be installed. See Pages r a¼ (209mm) _L_ As u==i 15" (381mm) Req'd. l7t (64mm) 3"x5' (76mm x 127mm) Opening For Electrical and/or Piping Rough-in J_L r1--'-----,,--,-1 Receptacle (Factory Installed) When Fuse & Disconnect Are Furnished Optional Fused Disconnect I 7¼" (184mm) Electrical Knockout Thermostat Subbase heat units are supplied with extra-long capillary tubes to be rerouted in the field. Because the subbase heat section and the chassis ship separately, it is not possible to factory install the thermostat. To install the thermostat for these units, proceed as follows: 1. With the louvered front panel removed, attach capillary tube hold-down clip (supplied) to the screw as shown in Figure Locate the thermostat bulb holder in subbase heat section as indicated in Figure Route the capillary tube and thermostat bulb into the subbase heat section and attach to mounting clip. Be careful not to damage capillary tube. 4. Secure capillary tube hold-down clip and replace louvered front panel. 5. Replace unit front panel and test unit to be certain of proper operation. Page 18

19 Electrical Subbase Installation An electrical subbase is optional for all 208V and 230V units. The standard subbase is available with 3 (76 mm) or 4 (102 mm) heights. The subbase contains leveling legs for adjustment of up to 1 (25 mm) additional height. All subbases are factory supplied. The electrical subbase requires a minimum of 4 3/8 from the front edge of the wall sleeve to the finish wall. Installation 1. If the minimum depth subbase is required, discard the side extension pieces. 2. If more than the minimum depth is required, determine the depth of the side extension pieces desired and break at the proper score line. Insert the extension pieces into the front assembly and secure with two short black screws at each side. 3. Insert leveling bolts into subbase bottom flange. Four bolts are required if side extensions are used. 4. Place the subbase on the floor and align its center line with the center line of the wall opening. Do not fasten the subbase to the floor. Attach the subbase to the wall sleeve using the clips provided with the subbase. For the CRSO/CEAFO Series 16" x 44" replacement unit, secure the subbase to the wall sleeve by aligning the wall sleeve clearance holes with the subbase engagement holes; secure with the screws provided. 5. The wiring should be roughed in and the conduit connected to the subbase junction box. Complete the installation by wiring the receptacle to the incoming power supply. For 265V units, bolt plug/ cord cover to subbase. Standard electrical subbase 3" x 5" (76 to 127mm) Opening for Electrical and/or Drain Rough-In Knockouts for Optional Fuse & Disconnect Switch Electrical Junction Box for Main Power Connection 5 8 " (16mm) Receptacle (Req d on 265V Units) Plug/Cord Cover (Req d on 265V Units) 7 8 " (22mm) 3" " (63.5mm) 5" " (1054mm) Leveling Screw (4 Places) CL Electrical Knockouts 17" (432mm) Plan 12" (305mm) 0" (0mm) to " (238mm) " (111mm) " (38mm) 3" (76mm) or 4" (102mm) 0" (0mm) to 1" (25mm) Exploded view of standard electrical subbase Front Elevation (Three Front Panels in Place) Telescoping Side Extension Optional, Factory Installed Fused Disconnect and Receptacle Removable Junction Box Cover T-CLIPS Plug/Cord Cover (Req d for 265V) 1-inch Adjustable Leveling Legs Page 19

20 Incremental conditioners are built to last. With proper care, the unit should provide uninterrupted service for many years. Scheduled maintenance of this equipment, as described below, is the key to the equipment s longevity. Air filters must be cleaned at regular intervals. Twice annually may be adequate in some areas while twice monthly may be required in others. Areas with high dirt and lint content or heavy usage of units require more frequent filter maintenance than those areas of relatively clean operating or low usage conditions. Unit malfunction may occur if air filters are not kept clean. The standard filter supplied with the unit is a washable media type. This type of filter should be rinsed with hot water and a mild detergent, let dry. It is recommended that the chassis be removed every year for a thorough checkup. The heat section need not be removed but should be inspected and cleaned if necessary. To access the unit for cleaning or service, proceed as follows: Turn off main power to the unit. Remove the front panel and the kickplate. Scheduled Maintenance 3. Unplug the chassis from the control box and remove the chassis from the wall sleeve. Replace with spare chassis. 4. Move chassis to maintenance area and check all seals, wires, and insulation and repair as required. 5. Cover motor and protect all electrical components before washing dirt from chassis. Warning: Residential and institutional cleaning compounds can cause permanent damage to the packaged terminal unit. To avoid damage to unit controls and heat transfer surfaces, do not spray cleaning compounds onto the return air opening or unit controls. Normal cleaning can be accomplished by wiping the unit surface with a damp cloth. When using cleaning compounds on carpets, floors or walls, turn the unit off to avoid drawing potentially damaging vapors into the package terminal unit. 6. Clean condensate drain and clear weep holes. 7. Dry equipment thoroughly, especially electric parts and insulation. 8. Clean any rust spots with steel wool and paint with rust inhibiting paint. 9. Check all fasteners and tighten if necessary. 10. Check the motor nameplate for routine oiling instructions. 11. Test run chassis before reinstalling or returning to spare parts stock. Recommended Spare Parts An advantage of the Incremental system is that failure of any one part affects only one Incremental conditioner. A further advantage is that a failed part can be quickly and easily replaced, thus minimizing the inoperative time of the equipment. This is so, however, only if a replacement part is quickly available. In order to replace a failed part quickly and keep all Incremental conditioners in good operating condition CNI recommends that at the time Incremental conditioners are purchased, owners arrange for a small stock of replacement parts. Where an owner carries such a stock, immediate replacement of a defective part is possible. The defective part can then be returned to CNI or one of its authorized service stations. So long as it is still in warranty, it is repaired or replaced and returned to the owner without cost for shop labor and material. Thus, the stock of replacement parts is constantly replenished. To the right is listed the kind of parts which CNI recommends be carried in stock, together with the quantity of parts recommended per 100 Incremental conditioners installed. Qty. Per Part Name 100 Units Cooling Chassis Compressor Compressor Overload Device Compressor Running Capacitor Fan Motor Condenser Fan Motor Evaporator Fan Motor Capacitor Wheel Outdoor (2 Per) Wheel Indoor Pushbutton Switch Thermostat Knob for Thermostat Control Relay Hydronic Valve Spare Filter Electric Elements Hi-Limit Switches Hydonic Coils Relay Board Page 20

21 TROUBLESHOOTING CHART OPERATING FAULT Compressor will not start - no hum Compressor will not start - hums but trips on overload protector Compressor starts and runs, but short cycles on overload protector Unit operates with little or no capacity Condenser fan and vent motor runs, but compressor will not start Electric shock from unit Water drips from unit Unit vibrates or rattles POSSIBLE CAUSE 1. Broken or loose wiring 2. Improper wiring 3. Overload protector tripped. 1. Improper wiring 2. Running Capacitor defective 3. Compressor motor has a winding open or shorted. 4. Internal mechanical trouble in compressor 1. Additional current passing thru overload protector 2. Overload protector defective 3. Excessive discharge pressure 4. Suction pressure too high 5. Compressor too hot -return suction gas hot 6. Compressor motor has a winding shorted 1. Shortage of refrigerant 2. Restriction in refrigeration system 3. Dirty condenser 4. Defective TXV, by-pass, or reversing valves. 5. Inadequate air flow over evaporator 1. Broken or loose wiring 2. Improper wiring 3. Defective running capacitor on compressor 4. Defective compressor overload protector 5. Defective compressor motor 1. Improper grounding of electrical circuit 1. Condensate drain plugged 2. Chassis damaged 1. Copper tube vibrating 2. Loose components CORRECTION 1. Check all wiring and connections 2. Check against wiring diagram 3. If external type 1. Check against wiring diagram 2. Determine reason and replace 3. Replace compressor 4. Replace compressor 1. Check against wiring diagram 2. Check current, replace protector (If external type) 3. Check for restrictions in condenser air flow or refrigeration circuit 4. Check for defective valves 5. Check refrigerant charge (fix leak) refrigerant, if necessary. Check reversing valve operation. 6. Replace compressor 1. Fix leak, recharge 2. Determine location and remove 3. Clean condenser 4. Replace TXV, bypass, or reversing valves. 5. Clean evaporator coil, check fan, clean filter. 1. Check all wiring 2. Check against wiring diagram 3. Replace capacitor 4. Replace overload Protector. (If external type) 5. Replace compressor 1. Check wiring diagram and provide proper ground 1. Clean drain 2. Repair or replace damaged parts 3. Check installation in wall sleeve. 1. Adjust by bending or apply tape 2. Tighten and adjust as necessary Page 21