Discuss New part L 55 degrees flow? in the UK Plumbing Forum | Plumbing Advice area at PlumbersForums.net
Anyone work on new builds and seen this come into effect?
Interesting if boiler controls in future simply won't be adjustable over 55degC.
You misunderstand Roy, the boiler will only be set to 55 deg C where the system has been designed for this, in which case there would be no advantage to turning the boiler up a bit.Interesting if boiler controls in future simply won't be adjustable over 55degC. If there is no reg to actually fit new larger rads then if it's left set at 55degC at the end of a new boiler job then what's to stop the owner just turning it up a bit in the depths of winter?
Thanks but why are they stating a 55c flow? I usually set at around 65 if possible so should return at 54c so will condensate? Are they saying they want the full heat exchanger in condensating mode at all times?You misunderstand Roy, the boiler will only be set to 55 deg C where the system has been designed for this, in which case there would be no advantage to turning the boiler up a bit.
In reality this will be all new builds and most complete system replacements, but it won’t be possible in all cases so there is no way manufacturers will restrict to 55 in the foreseeable future ……
Thanks I thought the idea was to make sure the return was coming back at this temperature not the flow. But then again I've know some new system to only have a 6c difference flow and return.Boilers only start to condense at ~ 50/55C, see below.
That would be good. Had a long discussion with a customer recently about what temperature she should set her boiler flow to and I mentioned that ideally, the boiler would do just that (but hers doesn't).What about legionella protection for DHW?, will all new boilers now have to have HW priority and increase the flow temp to 80C?.
Is it looking more so that heat pumps may take over. I know there was talk of hydrogen blend/ hydrogen.Condensing boiler 55/35 dt is 25
Heat pump 47.5/42.5 dt is 25 that’s why so systems are heat pump ready
Vokera Unica Max I read somewhere and perhaps some version of Ariston??I've never managed to get a 25c delta T. Have struggled to get 15. We can't adjust the pump in the boiler. So just lockshield? I think Vokera mentioned on one of there boilers they had a pump were you could set the delta T.
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