Multiple Unit Installation; Heat Pump, Heater, Solar Combination; Multiple Heat Pump Connections - Pentair ULTRATEMP 70 Guía De Instalación Y Usuario

Multiple Unit Installation

1. Heat Pump, Heater and/or Solar Combination
In certain regions of the country it may be more
economical to run a UltraTemp
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
efficiently.
A recommended plumbing layout for a heat pump /
heater / solar combination heating system for a pool /
spa combination is shown below. 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.
POOL
RETURN
POOL
INTAKE
SPA
RETURN
S
SPA
SPA
DRAIN
INTAKE
Heat Pump during the
®
HEATER
SP
SPA
M
MAKE-UP
CHECK
VALVE
FILTER
POOL
DRAIN A
PUMP
Heater and/or Solar Combination

2. Multiple Heat Pump Connections

All plumbing on multiple heat pump installations must be
done in parallel (see next page). An equal flow of water
to each heat pump is important for optimum operation.
Note: It may be necessary to adjust the water pressure
switch if a unit is installed below the water level. Refer
back to page 6 for details on when and how to adjust the
pressure switch.
Each heat pump in a multiple unit installation
allows a maximum flow rate of 100 gpm (380 lpm)
and requires a minimum of 30 gpm (110 lpm).
12"
min.
(305 mm)
HEAT PUMP
ULTRATEMP
CHECK
VALVE
FROM SOLAR
FROM SOLAR
TO SOLAR
Heat Pump Installation and User' s Guide
®
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