Installation Instructions; Inspect Shipment; Connect Refrigerant Lines - Whirlpool W2GH3 Installation Instructions Manual

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All field wiring must be done in accordance with National
Electrical Code requirements, applicable requirements of UL,
or local codes, where applicable.

Inspect Shipment

Excessive Weight Hazard
Use two or more people to move and install
condensing unit or heat pump.
Failure to do so can result in back or other injury.
This heat pump is shipped in one package, completely
assembled and wired. The thermostat is shipped in a separate
carton when ordered.
1. Check the heat pump rating plate to confirm specifications
are as ordered.
2. Upon receipt of equipment, carefully inspect it for possible
shipping damage. Take special care to examine the unit
inside the carton if the carton is damaged.
If damage is found, it should be noted on the carrier's freight bill.
Damage claims should be filed with the carrier immediately.
Claims of shortages should be filed with the seller within 5 days.
NOTE: If any damages are discovered and reported to the carrier,
do not install the unit because your claim may be denied.

Connect Refrigerant Lines

Refrigerant lines must be connected by a licensed, EPA certified
refrigerant technician in accordance with established procedures.
Connecting refrigerant lines must be clean, dehydrated,
refrigerant-grade copper lines. Heat pumps should be
installed only with specified line sizes for approved system
combinations with elevation differences up to 15 ft and total
length of up to 50 ft. See the Suction Line Sizes and Liquid
Line Sizes charts.
Use care with the refrigerant lines during the installation
process. Sharp bends or possible kinking in the lines will
cause a reduction in performance.
To avoid contamination of the refrigerant system, do not
remove the caps from the lines or system connection points
until connections are ready to be completed.
1. Route the suction and liquid lines from the fittings on the
indoor coil to the fittings on the heat pump. Run the lines in
as direct a path as possible, avoiding unnecessary turns and
2. For product efficiency, be sure that the suction line is
insulated over the entire exposed length and that both
suction and liquid lines are not in direct contact with floors,
walls, ductwork, floor joists, or other piping.


Electrical wiring, disconnect means and over-current
protection are to be supplied by the installer. Refer to the
rating plate for the maximum over-current protection,
minimum circuit ampacity, and operating voltage. See the
wiring diagrams later in "Make Electrical Connections."
3. Remove valve cores.
4. Wrap the service valves with a wet rag.
5. Connect the suction and liquid lines, using a brazing
compound. Braze with an alloy of silver or copper and
phosphorus with a melting point above 1,100°F.
NOTE: Do not use soft solder.
6. Make sure indoor coil has been put in place according to the
Installation Instructions and is connected to the refrigerant
7. Replace valve cores.
8. Pressurize the lines and indoor coil with dry nitrogen not to
exceed 20 psi.
9. Leak test the refrigerant lines and indoor coil.
10. Evacuate the indoor coil and lines to a minimum of
500 microns to remove contamination and moisture, then
disconnect the vacuum pump.
11. Open the suction and liquid service valves fully.
12. Insulate the suction line with refrigerant line insulation
material of ¹⁄₄" or more wall thickness.
13. Pack insulating material around refrigerant lines where they
penetrate the structure to protect the lines and to minimize
vibration transmission.
A. Seal openings where refrigerant lines penetrate structure.
Refrigerant Charge
Refrigerant lines must be connected by a licensed, EPA certified
refrigerant technician in accordance with established procedures.
Refrigerant charge adjustment will be required for line set
lengths greater than 15 ft and for non system matched
evaporator coils.
The heat pump is factory charged with the proper refrigerant
charge amount for a matching evaporator and 15 ft of
refrigerant line. Refer to the heat pump rating plate for the
exact amount of this factory charge.


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