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SWIMMING POOL HEAT PUMP
SWIMMING POOL HEAT PUMP
5.2 Refrigerant gas high and low pressure protection
The high pressure protection makes sure the heat pump is not damaged in case of over pressurisation of
the gas. The low pressure protection emits a signal when refrigerant is escaping from the conduits and the
unit can not be kept running.
5.3 Overheating protection on the compressor
This protection protects the compressor from overheating.
5.4 Automatic defrost control
When the air is very humid and cold, ice can form on the evaporator. In that event, a thin layer of ice
appears that will grow increasingly bigger as long as the heat pump is running. When the temperature of
the evaporator has become too low, automatic defrost control will be activated, which will reverse the
heat pump cycle so that hot refrigerant gas is sent through the evaporator during a brief period of time to
defrost it.
5.5 Temperature difference between inflowing and outflowing water
During normal operation of the heat pump, the temperature difference between inflowing and outflowing
water will approximate 1 to 2
℃.
In
the
event
that
the
pressure
switch
does not work and that
the water
stops
circulating, the temperature probe monitoring the outflowing water will always detect a rise in
temperature. As soon as the temperature difference between inflowing and outflowing water exceeds 13
℃,
the heat pump will be automatically
turned
off
.
5.6 Low temperature cut-out
If,
during cooling, the temperature of the outflowing
water reaches 5
℃
or drops below this temperature,
the heat pump will turn itself off until the water temperature
reaches
or
exceeds
7
℃
again
.
5.7 Anti-frost protection during winter
This protection can only be activated if the heat pump is in STAND-BY status.
5.8 First anti-frost protection
If the filter pump is controlled by the heat pump (regardless of the value for parameter 9) and when the
water temperature lies between 2 and 4
℃,
and
the air temperature is lower than 0
℃,
the filter pump will
be automatically turned on to prevent the water from freezing in the piping. This
protection is deactivated
when the temperature rises again
.
5.9 Second anti-frost protection
If the water temperature drops
even
more, that is, below 2
℃
(during
long
frost
periods), the
heat
pump
will also start running to heat the water until its temperature
approximates
3
℃.
When
this
temperature
is reached, the heat pump will stop, but
anti
-
frost
protection
will remain active until conditions change.
