Whirlpool W4GH6 Tools and Parts, System Requirements, Location Requirements

Tools and Parts

Gather the required tools and parts before starting installation. Read and follow the instructions provided with any tools listed here.

Tools Needed

■	Torch	■	Gauge set for R-410A
■	¹⁄₄" nut driver		refrigerant
		■ Service wrench with hex-
■	⁵⁄₁₆" nut driver
			head extension
■	Adjustable wrench
		■	Torque wrench

Parts Needed

Check local codes and HVAC supplier. Check existing electrical supply, and read “Electrical Requirements,” “Location Requirements,” “System Requirements” and “Connect Refrigerant Lines.”

System Requirements

Heat pump system matches are derived from actual laboratory testing of matched systems. It is recommended that only matching equipment be used to ensure proper operation and efficient performance.

■The designed system matches are listed in the heat pump unit specification sheets and on the heat pump refrigerant charging instructions located on the back of the service access panel.

■Refrigerant charging instructions include a list of matching indoor equipment with the proper thermal expansion valve size and amount of refrigerant charge required.

■This heat pump has been factory charged with a quantity of refrigerant (R-410A) sufficient for a matched indoor coil and a maximum 15 ft of refrigerant line.

■In order to maintain the 16 SEER rating, this heat pump must be matched with an indoor section containing a variable speed blower.

■Refer to the refrigerant charge label located on the inside of the heat pump access panel for the correct thermal expansion valve size required.

■This product has been designed and manufactured to meet ENERGY STAR® criteria for energy efficiency when matched with appropriate coil components. However, proper refrigerant charge and proper airflow are critical to achieve rated capacity and efficiency. Installation of this product should follow the manufacturer’s refrigerant charging and airflow instructions. Failure to confirm proper charge and airflow may reduce energy efficiency and shorten equipment life.

■A filter drier approved for use with R-410A refrigerant is installed in the heat pump.

■If this condensing unit is equipped with a crankcase heater, it should be energized 24 hours before the condensing unit is started to prevent compressor damage as a result of slugging.

■Use only polyol ester oils if oil must be added to the system. Mineral oil is not compatible with refrigerant.

Indoor System Thermal Expansion Valve

■W4GH6 units are designed for use with thermal expansion valve systems only. The thermal expansion valve must be ordered separately from the manufacturer.

Thermal Expansion Valve Kits

Model	Part Number
W4GH624	H4TXV01
W4GH636	H4TXV02
W4GH648, 60	H4TXV03

Location Requirements

■This heat pump is designed to be located outdoors with sufficient clearance for free entrance to the inlet and discharge air openings. The location must also allow for adequate service access. See “Minimum Clearances.”

■Where possible, select a location for the heat pump which is shaded from the direct rays of the sun most of the time. North or east locations are usually most desirable. Position the heat pump to avoid direct contact with water, snow or ice from a roofline overhead.

■The heat pump must be installed on a solid, level mounting pad that will not settle or shift. Isolate the pad from the building structure to avoid possible transmission of sound or vibration from the heat pump into the conditioned space.

■The heat pump foundation should be raised to a minimum of 3" above finish grade. In areas which have prolonged periods of temperatures below freezing, and/or snowfall, the heat pump should be elevated above the average snow line. If heat pump is to be installed on a flat roof, it should be on a platform or other support which will raise the inlet air opening 12" minimum above the surface of the flat roof.

■Care should be taken to ensure free drainage of condensate from defrost cycles. This will prevent ice accumulation. The heat pump should be located away from walkways to prevent possible icing from defrost condensate.

■Avoid placing the heat pump near areas such as sleeping quarters or study rooms. Normal operating sound levels may be objectionable if the heat pump is placed near certain rooms. A shift in sound type does occur during the defrost mode. The defrost mode generally lasts no longer than

10 minutes.

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