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D
Do not use any additives for water treatment in the heating system's
water!
D
The closed expansion tank contains an air filled bladder that absorbs vari-
ations in the heating system's volume. Under no circumstances may it be
bled of air.
8.3
Checking the safety valve
The safety valves for the heating system must be checked at least four times a year
to prevent lime deposits clogging the mechanism.
It is quite normal 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.
The safety valve 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 the valve does
not work properly, it must be replaced. Contact your installer, see section "13
References".
The opening pressure of the safety valve is not adjustable.
8.4
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 immediately. Then contact an
authorized installer, see section "13 References".
8.5
Cleaning the strainer for the heating system
D
The heat pump must be switched off at the main switch before cleaning
can be started.
D
The brine circuit's 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.
DHP-AX – 36
VUBMI102
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