3.7 Initial startup of the unit
The following steps need to be taken at startup (after verification that all the con-
nections are made according the specifications:
1. Turn on the filter pump. Check for possible water leakage and water flow to and
from the swimming pool.
2. Put the power plug into the outlet and switch the heat pump ON. The unit will
start after the time delay (see further).
3. Verify after a few minutes that the air exhausted by the heat pump is becoming
cooler.
4. Allow the unit and pool pump to run 24 hours per day until desired pool water
temperature is reached. When the set temperature is reached, the unit just shuts
off. The unit will now automatically restart when the pool temperature drops 1
degree Celsius below set temperature.
Several days will be needed to bring the temperature of the swimming pool water
to its required value, depending on the initial water temperature and the ambient
temperature. A good pool cover and insulation of the piping can shorten this
period considerably.
Time delay
– the unit is equipped with a 3-minute built-in delay to protect control
circuit components and to eliminate restart cycling and contactor chatter. This
time delay will automatically restart the unit approximately 3 minutes after each
circuit interruption. Even a brief power interruption will activate this delay and
prevent the unit from starting until the 3-minute countdown is completed.
3.8 Condensation
By its operation of heating the swimming pool water, the air taken by the unit is
cooled down and water may condense on the fins of the evaporator. If the relative
humidity is very high, this could be as much as several liters an hour. Sometimes
this condensation water is wrongly considered as swimming pool water.
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