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Does anybody have a pdf installation manual they could email me for a vaillant combi compact vcw 242 eh boiler. Cheers

I have just fitted a aco 32 rffi system boiler and when the three port valve is on hot water only the boiler makes a very load noise almost like a trumpet/vibrating sound, when you switch the heating on it seem\\\'s to stop happening . There appears to be no restriction to the flow or air in the...