Hayward HeatPro Heat Pro Installation - Page 12

Page 12 of 20 HEATPRO HEAT PUMP HP13023770 Rev: E Unions Two detachable union connectors, (2 union nuts and 2 gaskets) included with the heat pump, must be installed on the heat pump water inlet and outlet to facilitate servicing and winterizing the unit. (See figure below). Gasket Union Connector Union Nut Installation of Pool Heat Pump Above Pool Surface If the pool heat pump is installed more than three (3) feet [0,9 m] above the surface of the pool water, install directional flow fittings (not included with heat pump) on the end of the return water line to the pool. This will create adequate backpressure at the heat pump to operate the water pressure switch. In some cases, such as when the heat pump is installed 6-8 feet [1,8 - 2,4 m] above the pool surface, it may be necessary to install a positive flow switch in the waterline instead of the pressure switch. Installation of Pool Heat Pump Below Pool Surface A water pressure switch is integrated into the system to ensure that the unit only operates when water is flowing through the heat exchanger. If the heat pump is installed below the pool surface, the backpressure of water from the pool can cause problems with the internal water pressure switch setting. The water pressure switch is located in the control panel of the heat pump. Adjustment knob - counterclockwise decreases pressure set point, adjustment knob - clockwise increases the set point. Backpressure from the pool can close this switch, whose function is to tell the heat pump that the filter pump is running. This pressure switch setting should be adjusted so that the heat pump is running only while the pool filter pump is operating. Adjustment knob USE ONLY HAYWARD GENUINE REPLACEMENT PARTS Pomona, CA Clemmons, NC Nashville, TN Tel: 908.351.5400 www.haywardpool.com