How do I fill Vaillant heating system with water?
The water pressure is non existent in my Vaillant boiler and the heating won't come on. I read the book and it says that I must fill system with water..at the risk of sounding stupid, how exactly do I do that. I am sick of being referred to section 4.32..low pressure, fill system with water grrrr
Diane McCarogher, January 2010
