Hi all, first time in this forum, doesn't seem very busy but worth a try.
I have an old Gloworm co-ordinate G gas fire with back boiler and six radiators, i know its seen better days but cant afford to replace just now. My problem started last time i drained the system, not sure why but when refilled i get an airlock in the hot tank, i know its there because if i put the gas boiler on the water gets hot only at the bottom of tank, if i put electric immersion heater on the whole tank gets hot. Trouble is i only know one way to attempt to rectify this, taught me by a dubious plumber, is to temporarily remove the thermocoupling from the back boiler and literally boil the hot water to get rid of airlock. I'm fairly sure this is probably not the way to do it and anyway it didn't seem to work last time.
Can anyone tell me the proper way to do it?
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