Swimming Pool Water Chemistry - AQUA FORTE ZWPA Serie Manuel D'installation Et D'utilisation

Anti-frost protection during winter
This protection can only be activated if the heat pump is in STAND-BY status.
First anti-frost protection (switching external water filter pump)
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.
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.
ATTENTION!
The first anti-frost protection is only available when the external water pump is switched by the heat pump.
If the external water pump is not operated by the heat pump it should always be on.

5.2 Swimming pool water chemistry

Special attention should be paid to the chemical balance of the pool water. The pool water values should
always stay within the following limits:
Important: failure to comply with these limits will invalidate the warranty.
Note: exceeding one or several limits can damage the heat pump beyond repair. Always install water
treatment equipment past the heat pump's water outlet, especially if the chemicals are automatically
added to the water. A check-valve should also be installed between the outlet of the heat pump and this
equipment in order to prevent products from flowing back into the heat pump if the filter pump stops.