Trane 4WHC3036, 4WHC3030, 4WHC3024, 4WHC3042, 4WHC3048 Installer's Manual
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XE1200
Installer's Guide
WARNING:
HAZARDOUS VOLTAGE - DISCONNECT POWER and DISCHARGE
CAPACITORS BEFORE SERVICING
Single Packaged Heat Pump
13 SEER, Over/Under
2, 2-1/2, 3, 3-1/2, 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.
18-BB36D1-4
4WHC3-IG-4
© 2011 Trane
2, 2-1/2, 3, 3-1/2 Tons Shown
Installer’s Guide
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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.
The manufacturer assumes no liability for installations or servicing
performed by unqualified personnel.
SAFETY HAZARD!
This information is for use by individuals having adequate backgrounds
of electrical and mechanical experience. Any attempt to repair a central
air conditioning product may result in personal injury and/or property
damage. The manufacturer or seller cannot be responsible for the
interpretation of this information, nor can it assume any liability in
connection with its use.
SAFETY HAZARD!
Bodily injury can result from high voltage electrical components, fast
moving fans, and combustible gas. For protection from these inherent
hazards during installation and service, the electrical supply must be
disconnected and the main gas valve must be turned off. If operating
checks must be performed with the unit operating, it is the technicians
responsibility to recognize these hazards and proceed safely.
CONTAINS REFRIGERANT!
SYSTEM CONTAINS OIL AND REFRIGERANT UNDER HIGH PRESSURE. RECOVER REFRIGERANT TO RELIEVE PRESSURE BEFORE
OPENING SYSTEM. Failure to follow proper procedures can result
in personal illness or injury or severe equipment damage.
RECONNECT ALL GROUNDING DEVICES.
All parts of this product that are capable of conducting electrical current are grounded. If grounding wires, screws, straps, clips, nuts, or
washers used to complete a path to ground are removed for service,
they must be returned to their original position and properly fastened.
UNIT CONTAINS R-410A REFRIGERANT!
R-410A operating pressure exceeds the limit of R-22. Proper service
equipment is required. Failure to use proper service tools may result
in equipment damage or personal injury.
Use only R-410A Refrigerant and approved POE compressor oil.
HOT SURFACE!
Do Not touch top of compressor. May cause minor to severe burning.
SERVICE
SAFETY HAZARD!
Do not operate the unit without the evaporator fan or coil access panels
in place. Reinstall the access panels after performing maintenance
proceedures on the fan. Operating the unit without the access panels
properly installed may result in severe personal injury or death.
SAFETY HAZARD!
To prevent injury or death due to electrical shock or contact with
moving parts, lock unit disconnect switch in open position before
servicing unit.
THIS PRODUCT CONTAINS FIBERGLASS WOOL INSULATION! Fiberglass dust and ceramic fibers are believed by the State of
California to cause cancer through inhalation. Glasswool fibers may
also cause respiratory, skin, or eye irritation.
This warning complies with State of California law, Proposition 65.
IMPORTANT: Reconnect all grounding devices. All parts of this product
capable of conducting electrical current are grounded. If grounding
wires, screws, straps, clips, nuts, or washers used to complete a path to
ground are removed for service, they must be returned to their original
position and properly fastened.
IMPORTANT: Wear appropriate gloves, arm sleeve protectors, and
eye protection when servicing or maintaining this equipment.
Page 2
Installer’s Guide
Contents
Safety Considerations. ................................................2
Introduction............. .....................................................3
Step 1—Inspect Shipment............ ..............................3
Step 2—Determine Unit Clearances........ ..................4
Step 3—Review Location and Recommendation Infor-
mation............. ..............................................................6
Step 4—Unit Installation............. ................................6
Ground Level Installation............ ...............................6
Lifting and Rigging............ ..........................................7
Rooftop Installation -- Frame Mounting............. .......7
Rooftop Installation -- Flat Roof - No Frame............. 7
Ductwork Installation............. .....................................7
Condensate Drain Piping............. ...............................9
Air Filters............. .........................................................9
Electrical Wiring ........................................................10
Electrical Connection ................................................10
Electrical Power .........................................................10
Disconnect Switch .....................................................10
Power Wiring ..............................................................10
Accessories ...............................................................10
Control Wiring (Class II) ............ ...............................10
Starting the Unit............ .............................................11
Pre-Start Quick Checklist........... ..............................11
Starting the Unit In the Cooling Mode............ .........11
Operating Pressures .................................................11
Voltage ........................................................................11
Cooling Shut Down ...................................................11
Starting the Unit in the Heating Mode............ .........11
Heating Shut-Down ...................................................11
Sequence Of Operation............ .................................12
General............ ...........................................................12
Cooling Mode............ .................................................12
Heating Mode............ .................................................12
Supplementary Heat............ ......................................12
Demand Defrost Operation........... ............................12
Final Installation Checklist............. ..........................14
Maintenance............. ..................................................14
Owner Maintenance............ .......................................14
Service Maintenance ............ ....................................14
DEFROST CONTROL............. ....................................15
Base Limited Warranty............ ..................................18
Introduction
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.
Packaged units are designed for outdoor mounting with a vertical condenser discharge. They can be located either at ground level or on a roof in accordance with
local codes. Each unit contains an operating charge of refrigerant as shipped.
This guide is organized as follows:
• Step 1 - Inspect Shipment
• Step 2 - Determine Unit Clearances
• Step 3 - Review Location and Recommendation Information
• Step 4 - Unit Installation
• Step 5 - Unit Startup
• Sequence of Operation
• Maintenance
Step 1—Inspect Shipment
1. Check for damage after the unit is unloaded. Report promptly to the carrier any
damage found to the unit. Do not drop the unit.
2. Check the unit’s nameplate to determine if the unit is correct for the intended ap-
plication. The power supply must be adequate for both the unit and all accessories.
3. Check to be sure the refrigerant charge has been retained during shipment using
the 1/4" flare pressure taps located near the blower panel on the side of the unit.
NOTE: If practical, install any internal accessories to the unit at the shop.
Page 3
Installer’s Guide
Step 2—Determine Unit Clearances
Figures 1 and 2 show the unit critical dimensions.
Page 4
Figure 1. 4WHC3024 - 4WHC3042
Installer’s Guide
Figure 2. 4WHC3048 - 4WHC3060
Page 5
Installer’s Guide
Step 3—Review Location and Recommendation Information
1. Location of the unit must allow service clearance around it to ensure
adequate serviceability, maximum capacity, and peak operating efficiency.
2. These units are designed for outdoor installation. They may be in-
stalled directly on a slab, wood flooring, or on Class A, B, or C roof covering
material. The discharge air from the condenser fans must be unrestricted
for a minimum of 3 feet above the unit.
3. Check the handling facilities to ensure the safety of personnel and the
unit(s).
4. The unit must be mounted level for proper drainage of water
through the drain holes in the base pan.
5. The unit should not be exposed to direct roof water runoff.
6. Flexible duct connectors must be of a flame retardant
material. All duct work outside of the structure must be
insulated and weatherproofed in accordance with local codes.
7. Holes through exterior walls or roof must be sealed in
accordance with local codes.
8. All fabricated outdoor ducts should be as short as possible.
Clearances
1. The recommended clearances for single-unit installations are illustrated
in Figures 1 to 2, pages 4-5.
2. See the unit’s nameplate for the absolute minimum clearance between
the unit and any combustible surfaces.
Step 4—Unit Installation
Ground Level Installation
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.
The pad must not come in contact with the structure Be sure the outdoor
portion of the supply and return air ducts are as short as possible.
Unit requires vibration support as indicated in Figure 3 on page 8.
2. Location of the unit must allow service clearance around it. Clearance
of the unit must be given careful consideration. See Figures 1 & 2,
pages 4-5.
NOTE: Any reduction of the unit clearances indicated in these
illustrations may result in condenser coil starvation or the recirculation of warm condenser air. Actual clearances, which appear
to be inadequate should be reviewed with a local engineer.
IMPORTANT: The air outlet duct must have 1" clearance to
combustible material downstream from the unit.
3. Attach the supply and return air ducts to the unit as explained in the
following Ductwork Installation section on page 16.
4. Flexible duct connectors must be of a flame retardant material. Insulate
any ductwork outside of the structure with at least two (2) inches of
insulation and weatherproof. There must be a weather proof seal where
the duct enters the structure.
5. Do not expose the unit to direct roof water runoff.
6. Seal all holes through exterior walls in accordance with local codes.
7. Continue with the remaining installation sections.
Page 6
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