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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.
3.4 Automatic Flow Control Valve
The inlet/outlet header of the AE-Ti heat pump
comes equipped with an internal automatic flow control
valve. The automatic flow control valve maintains
the proper flow through the heat pump at rates up to
approximately 125 gpm (475 lpm). If the filter system
flow rate is higher than approximately 125 gpm (475
lpm), install a manual bypass valve (see Figure 4).
NOTE Be advised that if your circulation pump is over
2 HP or if the total fl ow exceeds 125 gpm, you
will have to add an external bypass valve.
3.5 Multiple Unit Installation
3.5.1 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.
The Jandy 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
parallel 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.
3.5.2 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 fl ow rate of
125 gpm and requires a minimum of 30 gpm.
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