Section 7. Professional Maintenance And Service; Heat Pump Design; Heat Pump Components And Operation - Zodiac Jandy Pro Series JE1500T Installation And Operation Manual

®
Jandy Pro Series JE Heat Pumps
checks must be performed.
1 Check for loose or broken wires and terminal
connections.
2. Verify the pressure switch or flow 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.
3. Inspect the electrical controls, specifically the
following:
a. High and Low Limits
b. Pressure Switch or Flow Switch
c. Temperature Control
4. Inspect the evaporator coil for blockage and clean
as necessary.
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 Zodiac 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.
The JE heat pump and the EE-Ti heat pump uses a
refrigerant called R-410A. It is a non-ozone depleting
refrigerant that is accepted by the EPA. R-410A has
higher operating pressures and cooling capabilities than
Free Chlorine or
Bromine
pH
Total Alkalinity (TA)
Calcium Hardness (CH)
Cyanuric Acid
Total Dissolved Solids (TDS)
* Concentration levels taken from "Basic Pool and Spa Technology" published by APSP (Association of Pool and
Spa Professionals).
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Installation and Operation Manual
table 3. optimal Water Chemistry ranges
test
R-22, which is the refrigerant used in the AE-Ti heat
pump. Therefore, R-410A should NEVER be used in
any of the AE-Ti heat pumps.
The EPA requires certification to purchase or use
R-410A. It is recommended that service personnel be
trained in installation, service, brazing, and maintenance
procedures. They are similar to what the industry has
used for the R-22 system, however, they should be
redefined for the higher operating pressures.
notE The maximum heat output and efficiency 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 airflow.
Adequate airflow 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 final 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 flow of the refrigerant, which results
in transferring cold gas to the water, thus lowering
the temperature.
recommended level
1.0 to 3.0 ppm
2.0 to 4.0 ppm
7.2 to 7.8 (Ideal ranges being between 7.4 and 7.6)
80 to 120 ppm
175 to 400 ppm
30 to 50 ppm
1000 to 2000 ppm (Excluding dissolved NaCl from Salt
Chlorine Generator)
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