Posted by Nick Gorman on September 27, 2001 at 04:21:58:
I've just moved into a house with a Vaillant Combi boiler. Unfortunately the previous residents did not leave me the instruction manual so I can't even identify the model number easily. I've just switched the central heating on but the radiators do not warm up because the pressure is too low. Brief instructions on the back of the door panel say that if the pressure is lower than 1 bar then the system needs topping up with water. How and where do I do this?
thanks in advance,
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