Installer's Guide 18-BB35-D1-3 4WCZ6-IG-3 Single Package Heat Pump 16 SEER, Two Stage, Convertible 3, 4, & 5 Ton, R-410A ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES IMPORTANT — This Document is customer property. Please return to service information pack and give this Installer's Guide to the homeowner upon completion of work.
Installer’s Guide Safety Considerations IMPORTANT: Read this entire manual before beginning installation procedures. Read this manual carefully before attempting to install, operate, or perform maintenance on this unit. Installation and maintenance should be performed by qualified service technicians only. NOTE: "Warnings" and "Cautions" appear at appropriate places in this manual. Your personal safety and the proper operation of this air conditioning product require that you follow them carefully.
Installer’s Guide Contents Safety Considerations Introduction Step 1-Inspect Shipment Step 2-Determine Unit Clearances Step 3-Review Location and Recommendation Information Step 4-Unit Installation Ground Level Installation Rooftop Installation -- Curb Mounting Covert Horizontal Airflow to Down Airflow Install Full Perimeter Roof Mounting Curb Lifting and Rigging Placing the Unit on the Mounting Curb Rooftop Installation -- Frame Mounting Ductwork Installation Attaching Downflow Ductwork to Roof Curb Attach
Installer’s Guide Step 2—Determine Unit Clearances Figures 1 through 6 show the unit critical dimensions. NOTE: The view labeled “Bottom Side” represents the Base as viewed looking up from underneath the unit. Page 4 Figure 1.
Installer’s Guide Figure 2.
Installer’s Guide Figure 3.
Installer’s Guide NOTE: The view labeled “Bottom Side” represents the Base as viewed looking up from underneath the unit. Figure 4.
Installer’s Guide Figure 5.
Installer’s Guide Figure 6.
Installer’s Guide Step 3—Review Location and Recommendation Information ! CAUTION ▲ Caution must be taken at all times to avoid personal injuries and/or damage to equipment. NOTE: The unit is shipped for horizontal installation. Down Airflow Units 1. Location of the unit must allow service clearance around it to ensure adequate serviceability, maximum capacity, and peak operating efficiency. Horizontal Airflow Units 2.
Installer’s Guide Step 4—Unit Installation NOTE: The unit is shipped for horizontal installation. Rooftop Installation -- Curb Mounting Convert Horizontal Airflow to Down Airflow Ground Level Installation The factory ships the unit for horizontal airflow. Perform this procedure to convert it to down airflow: To install the unit at ground level: 1. Place the unit on a pad the size of the unit or larger. The unit must be mounted level for proper drainage of water through the holes in the base pan.
Installer’s Guide Figure 8. Converting Horizontal to Down Airflow 2. Insert the four (4) lifting lugs in the openings provided in the drip lip on each end of the unit. See Figure 9 inset B, page 13. A tap or jerk to the lug will overcome the interference that arises due to the dimple on the lug. 3. When hoisting the unit, be sure that a proper method of rigging is used. Use either the unit's top shipping skid and straps or slings and spreader bars for protection during lifting.
Installer’s Guide Base of unit rest on top of curb rails Drip lip on perimeter of unit IMPORTANT: To prevent damage to the sides and top of the unit when hoisting, retain the top shipping skid on the unit or use “spreader bars” as shown in these illustrations. Spreader Bars Unit Corner Curb Corner Top shipping skid attached to unit Gasket Seal Drip Lip Dimple BAYLIFT002A Lifting Lugs Figure 9.
Installer’s Guide Figure 11. Typical Rooftop Horizontal Airflow Application with Frame Figure 12.
Installer’s Guide Ductwork Installation Attaching Downflow Ductwork to Roof Curb UNIT EXTERIOR Supply and return air flanges are provided on the roof curb for easy duct installation. All ductwork must be run and attached to the curb before the unit is set into place.
Installer’s Guide To connect power to the unit: Air Filter Installation The 4WCZ6 heating/cooling unit requires an air filter. A filter frame accessory is offered that will allow the installation of a filter within the unit. Otherwise a filter rack must be installed by the installer in the return duct work. Affix the filter label supplied with the unit adjacent to the filter area. Refer to Table 1 to determine filter size. Table 1. Determine Filter Size NOMINAL CFM FILTER* SIZE (Sq. Ft.
Installer’s Guide NOTES: 1. FUSED DISCONNECT SIZE, POWER WIRING AND GROUNDING OF EQUIPMENT MUST COMPLY WITH CODES. 2. BE SURE POWER SUPPLY AGREES WITH EQUIPMENT AND HEATER NAMEPLATE. 3. LOW VOLTAGE WIRING TO BE 18 AWG MINIMUM CONDUCTOR. 4. SEE HEATER NAMEPLATE FOR CURRENT RATING OF HEATER USED. 5. SEE UNIT AND HEATER DIAGRAM FOR ELECTRICAL CONNECTION DETAILS. 6. IF ELECTRIC HEATER ACCESSORY IS NOT INSTALLED OMIT THE ELECTRIC HEATER, ASSOCIATED POWER WIRES AND THE W AND X2 THERMOSTAT WIRES. 7. FIG.
Installer’s Guide o Are all covers and access panels in place to prevent air loss and Control Wiring (Class II) Low voltage control wiring should not be run in conduit with power wiring unless Class 1 wire of proper voltage rating is used. Route the thermostat cable or equivalent single leads of No. 18 AWG colored wire from the thermostat subbase terminals through the rubber grommet on the unit. See Figures 1-6 (pages 4-9) for the control entry (24V Entry) location.
Installer’s Guide Sequence of Operation General Operation of the unit heating and cooling cycles is automatic when the system is set to HEAT or COOL (the optional automatic changeover thermostat, when set to AUTO, automatically changes to heat or cool with an appropriate room temperature change). The fan can be set to ON, causing continuous evaporator (indoor) fan operation or set to AUTO causing fan operation to coincide with heating or cooling run cycles.
Installer’s Guide ECM Fan Motor Adjustments If the airflow needs to be increased or decreased, see the Airflow Table in the SERVICE FACTS. Information on changing the speed of the blower motor is in the Blower Performance Table. Blower speed changes are made on the ECM Fan Control mounted in the control box. The ECM Fan Control controls the variable speed motor. There is a bank of 8 dip switches, (See Figure 19 below), located on the board.
Installer’s Guide Limited Warranty High Efficiency Heat Pump 4WCZ6, 4WCY4, 2/4WCX3 and WCZ (Parts Only) Models Less Than 20 Tons for Residential Use* This limited warranty is extended by Trane U.S. Inc., to the original purchaser and to any succeeding owner of the real property to which the Heat Pump is originally affixed, and applies to products purchased and retained for use within the U.S.A. and Canada.
Installer’s Guide Limited Warranty High Efficiency Heat Pump 4WCZ6, 4WCY4, 2/4WCC3, 2/4WCX3, WCZ, WCD, WCH, WCK, WSC (Parts Only) Models Less Than 20 Tons for Commercial Use* This warranty is extended by Trane U.S. Inc., to the original purchaser and to any succeeding owner of the real property to which the Heat Pump is originally affixed, and applies to products purchased and retained for use within the U.S.A. and Canada. There is no warranty against corrosion, erosion or deterioration.
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Installer’s Guide Trane 6200 Troup Highway Tyler, TX 75707-9010 © 2008 Trane Page 24 The manufacturer has a policy of continuous product and product data improvement, and it reserves the right to change design and specification without notice.
