line, its outlet opening facing downwards. If the safety valve is not
checked regularly, the water tank might be damaged. It is quite nor‐
mal that the safety valve lets out small amounts of water when the
water tank is being charged, especially if a lot of hot water was used
previously.
Both safety valves can be checked by turning the cap a quarter of a
turn clockwise until the valve lets out some water through the overflow
pipe. If a safety valve does not work properly, it must be replaced.
Contact your installer.
The opening pressure of the safety valves is not adjustable.
6.4 In the event of leakage
In the event of leakage in the hot water pipes between the heat pump
and water taps, close the shut-off valve on the cold water inlet imme‐
diately. Then contact your installer.
6.5 Cleaning the strainer for the heating circuit
The heat pump must be switched off at the main switch
before cleaning can be started.
The strainer must be cleaned twice a year after installation.
The interval can be extended if there is evidence that cleaning
twice a year is not necessary.
Have a cloth to hand when opening the strainer cover as a
small amount of water usually escapes.
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