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I think mine might be an older model, my filling loop as you say seems to be built in and with two grey levers you turn to open it. The pressure seems to rise regardless of on or off. I've just drained a rad down until the boiler read 0.2 bar. Normally at this stage the pressure would be...

Hi all, My boiler knowledge is entry level at best so bear with! Recently had a new expansion vessel and heat exchanger fitted to my gloworm 30cxi boiler, and a replaced PRV. This was to fix the problem of the boiler losing pressure and constantly needing to be refilled. Now I have the...