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home Fix label Heating label_important Home Heating Systems

vallient boiler ?

when it says f.22
mandy purvis, January 2009
home Fix label Heating label_important Home Heating Systemsdone
dependent on the model you have its normally the pressure is to low. you will need to up the pressure to between 1-1.5 bar. again dependent on the model the filling loop may be external or internal of the boiler.

andy, January 2009

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