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Mend Vaillant Ecotec Pro 28 Boiler

Low Pressure on Vaillant Ecotec pro 28 boiler?

How do I adjust the pressure on my Vaillant Ecotec pro 28 boiler? I have searched online for a step by step guide but I cant find anything. It is very low and I'm quite worried it'll stop working before xmas :(

Chrissy
December 2011
VaillantHeating, Home Heating SystemsVaillant Ecotec Pro 28 Boiler
Thanks!

Chrissy
December 2011
type 'filling loop' in to youtube to see what I mean

A1
December 2011
you use a filling loop fitted under the boiler to top the water pressure up

A1
December 2011
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