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Mend Vaillant Combi Boiler Pressure Central Heating

valliant combi boiler requires water pressure building up?

hi there, i have a valliant combi boiler and the water has been turned off, now i have no pressure in the boiler, i have a grey tap and a silver flexi pipe going to c/h return how do i get the pressure back up

bill
December 2008

Vaillant Heating, Home Heating Systems Combi Boiler Boiler Pressure Central Heating

There will be a 1/4 turn valve on the end of the flexi pipe, where it comes off the 15mm cold water feed to the boiler. Open this and it should start to refill the system. Set it to 1.5 bar on the gauge. Mind to switch the valve off again!

scott
December 2008

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Vaillant Boiler Low Pressure - How to Rebuild