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Mend Saunier Duval SD623 Combi Boiler Pressure

How do I increase the pressure on a combi boiler?

I have a Saunier Duval combi boiler model SD623 and the pressure has gone right down to zero, so that there is hardly any hot water available. Is there a simple way of increasing the pressure myself, and if so, how do I do it?

Catherine
March 2005
Saunier DuvalSaunier Duval SD623Heating, Home Heating SystemsCombi Boiler Boiler Pressure Saunier Duval
there are two screws/bolts underneath the boiler turn these to your required pressure, best to get some to show you first.
My question is do you do this when the boiler is on or cold.

christine
March 2010

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