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3.5
Filtration System Layouts
3.5.1 Shared
Filtration System
Figure 4 illustrates the standard layout for shared
filtration systems.
3.5.2 Independent
Filtration System
Figure 5 illustrates the standard layout for
independent (dual pump) filtration systems sharing a
heat pump.
3.6
Multiple Unit Installation
3.6.1
Heat Pump and Heater Combination
In certain regions 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 Air Energy
™
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 6 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.
3.6.2
Multiple Heat Pump Connections
All plumbing on multiple heat pump installations
must be done in parallel (see Figures 7 through 10). 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
475 lpm and requires a minimum of 110 lpm.
Figure 6. Plumbing For Heating System Combinations
Heater
Heat Pump
From Solar
To Solar
Check Valve
Pool Return
Pool Intake
Spa Intake
Spa Drain
Pump Filter
Spa
Make-Up
Check Valve
Spa Return
Pool Drain
Filter
