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Penelope.
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Penelope
I have a Vaillant (VCW-Sine 18 T3WFH) wall mounted combi CH/HW boiler, and the pressure gauge shows that the water pressure is way below the red line marked on the gauge.Other people I have spoken to have said I have to adjust the pressure on combi CH/HW boilers.I need to know how to do this, as I dont have the instruction for the boiler and I cant find them on the web.Can anyone help, or scan in their instruction book ?Thanks in advanceJon.
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