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vaillant boiler ?

How di i top up the boiler with water. I need the white handle to be in line or just above the red one. That means not enough water in the system

rbe
October 2008
depending on what valliant boiler you have got but on most common valliants you will have a small filling loop with 2 black taps underside of boiler if so open one first then the other and top up pressure to 1 to 2 bar approx that should do the trick

ricardo
October 2008

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