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i've got a worcester bosch highflow 400 open flue. had loads of problems with it, such as pilot light going out daily. a local plumber did loads of bits and pieces to it, but eventually gave up and suggested i contact WB direct. so they came out, looked at it and condemned it as being...

i removed a radiator to decorate behind it and i read somewhere on here that you need to repressurise/refill the system after doing so. pressure should be 1 bar apparently? problem is, the pressure gauge on my boiler (worcester bosch highflow 400) has two needles - one red, one black. what...