Thermasis HYDRA PLUS, Инструкция по установке и эксплуатации

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1 Three piece pipe union 7 Expansion tank
2 Manometer 8 Drain
3 Ball valve 9 Safety valve
4 Hose 10 Air relief valve
5 Strainer (filter) 11 Radiator
6 Check valve
6.3. System filling
Fill the water heating system when the appliance is shut down. Under no circumstances light
the appliance if the boiler is not full of water. Filling must be carried out slowly so that air
bubbles can get out via the purposely placed outlets on the heating system. In closed circuit
heating systems the loading pressure of the system when cold and the expansion tank
preloading pressure must be the same.
WARNING

Do not mix the heating water with antifreeze or anticorrosion substances in the wrong
concentrations! It can damage the seals and cause the onset of noise during operation.
To fill the system, the boiler is fitted with a tap, with a check valve, to load the heating system
manually. During this operation, any air in the system is released via the air valve located in
the upper part of the boiler.

Open the radiator, and boiler air discharge valves;

Gradually open the system filling tap making sure that any automatic air valves
installed on the system work properly;

Close the radiator air valves as soon as water starts to come out;

On the system pressure gauge check that the pressure reaches a value of
approximately 1 bar;