Jandy AE-Ti Installation And Operation Manual - page 27
Page 25
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.
As equally important are the environmental
conditions (for example, air temperature,
humidity, water temperature, and wind).
7.2
Heat Pump Components and Their
Operation
Evaporator
Heat is collected in the evaporator
similar to a solar collector, which is a basic design
for collecting heat. 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 transfer warm air
to the large evaporator.
Compressor The compressor compresses the
refrigerant gas to a higher pressure, thus 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 Units with Optional
Chiller) The reversing valve reverses the fl ow of
the refrigerant, which results in transferring cold
gas to the water, thus lowering the temperature.
Figure 18. Heat Pump Operation Overview