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5. Check for spider webs or debris in the condensate
drain; clean if necessary.
6. Conduct a normal operating cycle and observe that
the unit operates properly.
Section 7. Professional Maintenance
and Service
7.1 Heat Pump Design
The Jandy 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.
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 effi ciency of
a heat pump is dependent upon the quality
and performance of the major components
used. Equally important are the environmental
conditions (for example, air temperature,
humidity, water temperature, and wind).
7.2 Heat Pump Components and
Operation
Evaporator - As air passes through the evaporator, the
refrigerant in the evaporator absorbs heat from the
ambient air. The warmer the ambient air and the
larger the surface area of the evaporator the more
heat it can collect
Fan - The heat pump fan produces high volume airfl ow.
Adequate airfl ow is required to move warm air
through the large evaporator.
Compressor - The compressor compresses the
refrigerant gas to a higher pressure, increasing the
temperature.
Heat Exchanger - As the fi nal step to the heating
process, the heat exchanger transfers the heat
from the hot gas to the water. (Also known as a
condenser.)
Reversing Valve - (For Hybrid Units with Optional
Chiller and Hot Gas Defrost) The reversing valve
reverses the fl ow of the refrigerant, which results
in transferring cold gas to the water, thus lowering
the temperature.
COMPRESSOR
TITANIUM HEAT
EXCHANGER
WARM AIR IN
EVAPORATOR
COIL
FAN
COLD AIR OUT
WATER
OUTLET
WATER
INLET
Figure 16. Heat Pump Operation Overview
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