Jandy AE-Ti Installation And Operation Manual - page 11
Page 9
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. Excess water fl ow will damage the heat
exchanger.
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 through 9). 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 5.7 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.
Figure 5.
Plumbing For Heating System Combinations
HEATER
HEAT PUMP
FROM SOLAR
TO SOLAR
FILTER
FILTER
PUMP
SPA
DRAIN
POOL
DRAIN
SPA
INTAKE
POOL
INTAKE
SPA
RETURN
POOL
RETURN
SPA
MAKE-UP
CHECK
VALVE
CHECK
VALVE