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alpha combi boiler cb 24?

The needle on the water pressure gauge has dropped under the green band how do i set the needle back into the green band when the system is cold
mick, April 2009
p.s. you should set system pressure to about 1 bar on the gauge

James, April 2009
you need to top up system pressure from the mains using the filling loop (usualy a silver flexypipe with 2 black valves) under or close to the boiler, however if the system has been in a while the pressure should not really be dropping, you may have a slow leak somewhere, I would top it up but if it goes down again call a corgi/safegas reg gas installer/plumber

James, April 2009