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6.4.2 Professional
Inspection
Inspections performed at least once a year by a
qualified technician are required to maintain your heat
pump’s safe and efficient operation. The following basic
safety checks must be performed:
1.
Check for loose or broken wires and terminal
connections.
2.
Check for bad or welded contacts on the
contactor(s).
3.
Verify the pressure switch operation. Turn the heat
pump OFF. Disconnect the power to the pump
time clock, or turn the pump time clock to an OFF
position. Turn the heat pump back ON. The heat
pump must not come on.
4.
Inspect the electrical controls, speci
fi
cally the
following:
a. High and Low limits
b. Pressure switch
c.
Temperature
control
5.
Inspect the evaporator coil for blockage and clean
as necessary.
6.
Check for spider webs or debris in the condensate
drain; clean if necessary.
7.
Conduct a normal operating cycle and observe that
the unit operates properly.
Section 7. Professional Maintenance
and Service
7.1
Heat Pump Design
The Air Energy
™
Heat Pump is one of the most
efficient ways to heat a pool or spa. The heat pump
transfers heat from the outside air to the pool or spa
water by means of an internal heat exchanger. See
Figure 20.
When the fan is turned on, warm air is drawn
through the refrigerant charged evaporator, turning
the cold liquid refrigerant to a warm gas. The gas then
flows through the compressor where it is compressed
resulting in a much higher temperature.
The hot gas enters the heat exchanger where the
water extracts the heat. The pump pulls in cool pool
water, which in turn converts the hot gas back into a
liquid refrigerant and starts the cycle over again.
NOTE
The maximum heat output and ef
fi
ciency of a
heat pump is dependent upon the quality and
performance of the major components used.
As equally important are the environmental
conditions (for example, air temperature,
humidity, water temperature, and wind).
Water Inlet Union
Water Outlet Union
Petcock
(Leave open until unit
is ready to start-up)
Figure 19. Winterizing the AE-Ti Heat Pump
COMPRESSOR
TITANIUM HEAT
EXCHANGER
WARM AIR IN
EVAPORATOR
COIL
FAN
COLD AIR OUT
WATER
OUTLET
WATER
INLET
Figure 20. Heat Pump Operation Overview
