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If the system pressure is too low (check manometer), inform your installer or top it up with water.
Refilling the heating system
The heating system can normally be filled and topped up with mains water. In
exceptional cases the water quality may vary strongly and it might not always be
suitable for filling the heating system (highly corrosive or hard water). Please con-
tact a certified specialist company in those cases.
Follow the procedure below
• Set the main system switch to “0”.
• Open the shut-off valves in the flow and return lines.
• The boiler filling and drain cock is accessible after removing the front panel on the
front of the boiler.
• Connect a hose between the filling cock and the water tap:
- Fill the hose with water before establishing the connection to prevent any air from
entering the heating system
- Unscrew the hose again after filling to brake the connection.
• Fill the water slowly while you control the water level on the hydrometer or mano-
meter.
• After refilling shortly open the air vents at the radiators, until all the air is vented out
of the sytem.
8.
Controlling the water level
8. Controlling the water level
Содержание UltraGas (35-650)
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