Installation Of Multiple Heat Pumps - Hayward HeatPro® Owner's Manual

Pool / spa heaters
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INSTALLATION OF MULTIPLE HEAT PUMPS

If a heat pump pool heater sizing calculation indicates that two or more pool heaters will be required to
heat a single pool, the units are to be installed for parallel operation. Series plumbing reduces
efficiencies of each heat pump downstream.
The diagram below shows installation of two units in parallel. Contact HAYWARD for additional
information if installing more than two units.
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