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Thanks Schvink and swbjackson - all the safety measures are in the cylinder (expansion vessel, pressure release valves etc) so I couldn't see an issue... 'The only place you shouldn't fit valves is between the cylinder and the expansion vessel.' - my Megaflo has an internal expansion vessel...

Thanks MIGEM Unfortunately the G3 man wasn't asked the question as the issue didn't come up until after he left. In my simple mind I have lots of valves, ie the outlet taps, they are just further away from the cylinder - I couldn't see any harm in having one a lot closer. I did turn off...

Hi I have had a Megaflo cylinder put in my airing cupboard so that we can get good pressure to the bathroom (by a G3 Gas safe man). The 22mm hot water outlet pipe splits off to 4 other pipes. Only one of these has a gate valve (one going to the en-suite shower) and this doesn't shut down...

Hi thanks for the advice, If you turn potentiometer P2 clockwise (approx 30 degrees) this adjusts the central heating temperature down to a sensible level. (Note this IS the temperature setting and not the power output which has its own adjustment) As owners will know it is preset at 80 degrees...

I know that I can acheive the desired affect because this is simply a replacement board. At instalation the adjustments were made to the original board by the engineer, I just wanted a heads up on which one of two to adjust. I was aware of the affect of the other potentiometers on the...

Hi Yes the two potentiometers available without removing the control board cover are for the burner pressure. The adjusting tool has two ends the other end adjusts the potentiometers 'under the cover'. Guess I can mark their current positions up and make adjustments to see. Thanks for...

Hi having the exact same problem, did you find out if it was P1 or P2 to adjust?