These new A RATED condensing boilers usually use Zero Pressure Governor gas valves now, so how do you tell the difference when looking at one, if it's a ZPG or a standard type? I ask as I am interested and wondered if there was an easy way to identify?
My boiler ha sthe traditional Multfunctional Gas Valve, with the perm pilot button!
My boiler ha sthe traditional Multfunctional Gas Valve, with the perm pilot button!