Check Valve Installation; Multiple Unit Installation; Heat Pump And Heater Combination; Multiple Heat Pump Connections - Jandy JE1500T Manuel D'installation Et De Fonctionnement

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Jandy ® JE Heat Pumps
3.3

Check Valve Installation

WARNING
A check valve can interfere with the proper
operation of certain Suction Vacuum Release
System (SVRS) products. To avoid possible
entrapment hazard, serious injury, or death,
make sure to review the operation/owners
manual of your particular SVRS product
before installing the check valve.
The heat pump must be protected from back-siphoning
of water. If there is any chance of back-siphoning,
provide a check valve between the pool and the filter
pump inlet.
When an automatic chemical feeder is installed in the
plumbing, it must be installed downstream of the heat
pump. A check valve must be installed between the
heat pump and the chemical feeder to prevent back-
siphoning of chemically saturated water into the heat
pump where it will damage the components.
3.4

Multiple Unit Installation

Heat Pump and Heater 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 during the hottest portion of
the year and a heater during the cooler months.
CHEMICAL LOOP
OR OPTIONAL CHLORINE
GENERATION SYSTEM
(JANDY AQUAPURE SHOWN)
®
CHEMICAL FEEDER
TO POOL OR SPA
Figure 4. Standard Plumbing Layout
Installation and Operation Manual
VENT FOR INDOOR
INSTALLATION ONLY
CHECK VALVE
MANUAL BYPASS VALVE
ENGLISH
The Zodiac heat pump may be plumbed 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.
Figure 5 illustrates a recommended plumbing layout
for a heat pump / heater / solar combination heating
system for a pool / spa combination. 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.

Multiple Heat Pump Connections

All plumbing on multiple heat pump installations must
be done in parallel (see Figures 6 and 7). An equal flow
of water to each heat pump is important for optimum
operation.
NOTE It may be necessary to adjust water pressure
switch if a unit is installed below the water level.
See Section 5.6 for details on when and how to
adjust the pressure switch.
NOTE Each heat pump allows a maximum flow rate of
70 gpm (265 lpm) and requires a minimum of
20 gpm (76 lpm).
POOL HEATER
Page 9
FILTER
POOL PUMP
FROM POOL OR SPA