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Essex flange is just a threaded boss with no internal 'works' . Can be used for a shower if fitted on the dome of the cylinder, but presents venting problems unless the pipework from it rises.
Discuss Plumbing Question - Shower not hot in the Central Heating Systems area at ElectriciansForums.net
There's a Suffolk flange fitted, so the shower hot water comes from about three inches lower down the cylinder than the rest of the hot water. This shouldn't make any difference to comparative water temperatures until the hot water is nearly all used up.Reason i am confused is that there is talk of the shower take off from the cylinder being lower than the top take off and there is talk of the pump running when either tap or shower are running.
I hate that when they just disappearI wonder how the OP is getting on.
It's always nice to have an update on the outcome.
The shower valve in question is designed for a minimum pressure of 0.4 bar.I think the problem may be the shower mixing valve is designed for mains pressure and the OP has only tank gravity pressure, or the pump may be caput and will not operate correctly with the pressure now available with the new boiler, which again may be designed for mains pressure and only has gravity pressure, both need checking, whatever is causing the problem seems to be a disparity between the boiler, shower pump and tank pressure differentials.
The lack of gravity pressure equipment is a continuing problem for older house's and installations.
It's a brand new shower.This is so simple..... get the temp of the hot water tested as close before the mixer as possible . If its as hot as expected .Buy a new mixer ..... !
Reply to Plumbing Question - Shower not hot in the Central Heating Systems area at ElectriciansForums.net
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