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Always read and obey all safety messages. This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and others. All safety messages will follow the safety alert symbol and either the word “DANGER” or “WARNING.” These words mean: DANGER WARNING You can be killed or seriously injured if you don't immediately follow instructions. You can be killed or seriously injured if you don't follow instructions. All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can happen if the instructions are not followed. INSTALLATION REQUIREMENTS These instructions are intended as a general guide only for use by ¦ The heat pump is designed and approved for outdoor use qualified persons and do not supersede any national or local only. codes in any way. The installation must comply with all state and ¦ The heat pump must be installed with no ductwork in the local codes as well as the National Electrical Code airstream. The outdoor fan is not designed to operate against any additional static pressure. Whirlpool Gold™ Model W4GH6 48488A006 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 refrigerant ¦ ..." nut driver ¦ Service wrench with hex¦ ...." 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. ¦ Ca...