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m90axx_mitchell
Hello, I have a few questions. Firstly can someone explain to me how to pressurise an expansion vessel within combination boiler. (Step by step please) And the reason you have to do this? Also when you go to a job to change a boiler and notice there is no bonding at the meter and no on off tape, how do you record this? as NCS. Is there a different gas pad for it? Do you just note it for yourself and verbally tell the customer? Also what size should the meter bonding be and what size is the boiler cross bonding to be? Thanks