Hayward HeatPro® Heat Pro All Models - Page 26

Plumbing Specifications Typical Installation Layout Heat Pump Pool / Spa Heater Owner's Manual PIPING CONNECTIONS Note: A detachable connection (union) must be utilized immediately adjacent the heater to facilitate servicing and winterizing the unit. (See example on next page) • The heat pump pool heater is designed for easy piping connections into the pool water filtering system. The pool heater condenser (heat exchanger) is provided with 1 ½" female fittings which are easily adapted to rigid poly vinyl chloride (PVC) or flexible plastic tubing. • Use 2" PVC Schedule 40 piping and 2" fittings and components for building the piping system. Components under this size will impede water flow rates and hinder the efficiency of the unit. Utilize a 2" - 1 ½" reducer to enter the heat pump. • Pipefittings such as reducers, tees, and elbows cause pressure to drop as water flows through them. Plan the plumbing layout carefully, using as few fittings as possible to connect your heat pump. • PIPING TO THE POOL HEATER MUST BE IN ACCORDANCE WITH APPLICABLE STATE AND LOCAL CODES. • It is important that the pool heater be connected downstream from the pool pump and filter in the return line to the pool. Connect the pipe from the filter outlet to the fitting near the bottom of the pool heater marked "COLD WATER IN FROM PUMP" • THE WATER TO BE HEATED MUST ENTER THE BOTTOM OF THE HEAT EXCHANGER TO AVOID THERMOSTAT "SHORT-CYCLING". • Connect the fitting near the top of the pool heater marked "HOT WATER OUT TO POOL" to the return piping to the pool. Long runs of piping to and from pool (over 25 feet) should be insulated to prevent heat loss to ground or air. NOTE: When the piping installation CAUTION: is complete, operate the pool filter Automatic erosion type pump with the heat pump off. Check chlorinators, if used, must be the entire piping system for leaks. installed downstream (between Observe the filter water pressure gauge the heat pump and the pool) of the for abnormalities or obstructions in the heat pump and a check valve (or filtering system. Hartford Loop) installed in a manner that will not allow the raw chlorine to drain back to the heat pump when the water pump is off. Do not allow pool maintenance people to pour chemicals in skimmer. Damage to your system and the heat pump could result. 25