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My pressure on boiler is below zero what do i do?

i have a vaillant boiler 828E NG Turbomax installed 2003. i have a key to adjust pressure but don`t know where to put it or what to do.

carol
March 2007

Vaillant Heating, Home Heating Systems Pressure Boiler Below Zero

i have got a new Pressure Gauge for vaillant boiler 824 turbo max
how do i fit it i have taken out the pump it is there but how do i remove it.

can any one help

anil
April 2007

look under the bottom of the boiler u will see where the key gos open valve slowly you will see pressure gauge rise fill to 1.5 bar max then shut off valve. check rads for air keeping eye on pressure more air you let out the more water to replace it.

hi-spec plumbing
March 2007

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My pressure on boiler is below zero what do i do?

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