glow worm compact e100
isolated boiler, drained boiler leaving valve open bar pressure dropped to zero. removed cap on expansion vessel put pressure gauge on nothing registered pumped air in using footpump pumped up to 1 bar pressure dropped to zero. i find locating footpump difficult due to position of valve but i seem to be able to pump air in but not holding any ideas.
isolated boiler, drained boiler leaving valve open bar pressure dropped to zero. removed cap on expansion vessel put pressure gauge on nothing registered pumped air in using footpump pumped up to 1 bar pressure dropped to zero. i find locating footpump difficult due to position of valve but i seem to be able to pump air in but not holding any ideas.