As yet valve not fitted, due now to be fitted next Monday, and it seems a by-pass will also be fitted, I would prefer it with valve where the by-pass will still protect, as have seen the micro switches fail, however I will leave that to the plumber.
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Good point I will talk to plumber tomorrow.Why do you need 2 pumps, that's really likely to cause back circulation where they are, surely you only need one where the single pipe goes back into the boiler. If the flat isn't used a lot fit a motorised valve where the flat pump is. The flat is really just another collection of rads on one system
No. The idea of a bypass valve is to allow adequate flow through the boiler when TRVs and MVs are closed.Whole idea of by-pass valve is to allow flow through pump even when the motorised valve or TRV's are closed, have I got it wrong?
The static pressure at the inlet is determined by the system's static head, i.e the vertical distance betwen F&E tank and the pump inlet. It has nothing to do with atmospheric pressure.The 14.696 psi is one atmosphere so max pressure on suction side
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