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my vokera 726 is losing water pressure when the central heating is turned?

what air pressure is required in the expansion vessel

mick
December 2009
VokeraHeating, Home Heating SystemsLosing Water Pressure
The installation manual will tell you, however if you don't have it-look it up on Vokera website, free to download. This is a good idea anyway because its neccessary for service etc. Vessel presssure will propably be about 1bar/14.7psi.

Vincent
December 2009

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