UltraTemp
®
Heat Pump Installation and User’s Guide
9
Multiple Unit Installation
Heat Pump, Heater and/or Solar Combination
In certain regions of the country it may be more economical to run a heat pump during the warmer
months and a gas heater during the cooler months. In some situations it may be desirable to run the heat
pump in the “Chiller” mode, if so equipped, during the hottest portion of the year and a heater during
the cooler months. The Pentair heat pump may be used in conjunction with a gas or electric heater or
any combination of heat sources including solar. All heat sources must be plumbed in series to work
correctly and effi ciently.
A recommended plumbing layout for a heat pump / heater / solar combination heating system for a
pool / spa combination is shown in
Figure 8
. Your system may not contain all of these components,
but the basic plumbing will apply by eliminating the component in the illustration that is not a part of
your system.
HEATER
EAT PUMP
FROM SOLAR
TO SOLAR
FILTER
S
DRAIN
POOL
DRA
SPA
INTAKE
POOL
INTAKE
SPA
RETURN
POOL
RETURN
SPA
MAKE-UP
VALVE
CHECK
24"
Figure 8.
(610 mm)
Figure 8.