How or is there a part to replace expansion tank valve it keeps leting air out, i have ben tod thereshould be 1pound of ar in there but the valve wont seal of, hope some ne know
I could do with the instalation and servicing instructions for the ravenheat RSF820 combi boiler
Alan Baxter
August 2008
if valve wont seal and hold its 13psi of pressure then a secondary expansion vessel can be added as closeto the boileras possible and to be connected onto the HTG RETURN pipe only. dpmartin17@aol.com
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