1 Used when filling
2 Connected to brine circuit
7.3 Check the water level in the heating circuit
The system pressure of the installation must be checked at least twice per year. Ensure that the heating system
has the necessary pressure, but max 6 bar.
You can use normal tap water when topping up the heating system. In certain exceptional cases the water
quality may be unsuitable for filling the heating system (corrosive or calciferous water).
In case of doubt, contact your installer.
NOTE: Do not use any additives for treatment of the water in the heating system, unless you have a written
consent from Thermia!
7.4
Checking safety valves
The safety valves for the installation must be checked at least four times a year to prevent lime deposits clog-
ging the mechanism.
The safety valve of the water tank protects the enclosed heater against over pressure. It is mounted on the cold
water inlet line. If the safety valve is not checked regularly, there is a risk that the water tank may sustain dam-
age. It is quite normal for the safety valve to let out small amounts of water when the water tank is being charg-
ed, especially if a lot of hot water was used previously.
The safety valves can be checked by turning the cap a quarter of a turn clockwise until water comes out of 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.
User Guide
Mega
Thermia Värmepumpar VUJSC302
23
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