pressure on vaillant ecotec pro28 boiler?
I have a vaillant ecotec po 28 boiler in my new home, which produces gallons of hot water, but as son as I turn the heating on the pressure gauge goes through the roof! I followed the manual guide, and aparently the pressure is too high (2.2) even when the central heating is not turned on. Any ideas how I can remedy this?
ice maiden, November 2009