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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. Arrangement of pool system
components other than as illustrated in the preceding
and following diagrams can affect the operation of the
heat pump’s water pressure switch. Location of the heat
pump above or below the pool water surface can also
affect operation of the switch. In general, the pressure
switch can be adjusted to accommodate this effect if the
heat pump water connections are no more than six feet
below the pool water surface or no more than 15 feet
above it. See instructions for pressure switch adjustment
(Section 5.7) in the heat pump start-up section of this
manual for more information. If the heat pump is
installed outside of this range, an external flow switch
may need to be installed in the plumbing upstream of
the heat pump. Call the Jandy Heat Pump Technical
Service department at (954) 970-4800 for details.
Be advised that when pool equipment is located
below the pool surface a leak can result in large scale
water loss or flooding. Jandy cannot be responsible for
such water loss or flooding or the damage caused by
either occurrence.
3.2
Water Connections at Heat Pump
Shipping plugs have been installed in the water
inlet and outlet ports of the heat pump at the factory.
Before installing any plumbing, remove the shipping
plugs.
Filtered water is plumbed to the inlet, located on
the right side of the heat pump front panel. Heated water
flows through the outlet, located on the left side of the
heat pump front. Two inch unions are provided.
Plastic piping (PVC Schedule 40) should be
connected to the heat pump. The unions, provided with
the unit, accept 2” PVC pipe.
POOL PUMP
FILTER
POOL HEATER
FROM POOL OR SPA
CHEMICAL FEEDER
TO POOL OR SPA
CHECK VALVE
CHEMICAL LOOP
OR OPTIONAL CHLORINE
GENERATION SYSTEM
(JANDY AQUAPURE SHOWN)
MANUAL BYPASS VALVE
A
qu
aP
ur
e
Sensors
Figure 4.
Standard Plumbing Layout
CAUTION
Make sure that fl ow requirements and pool
water turn over rates can be maintained with
the installation of additional heat pumps and
plumbing restrictions.
ATTENTION
Assurez-vous que la circulation d’eau requise
soit maintenue même si des pompes d’appoints
ou des éléments de plomberie, causant des
restrictions, sont ajoutés.
PRECAUCIÓN
Asegúrese de que los requerimientos de fl ujo
e índices de volumen de agua de la piscina
puedan mantenerse, con la instalación de
bombas de calentar adicionales y restricciones
de fontanería.
3.3 Check
Valve
Installation
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.
