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Illustrious Member
Joined: Jan 20, 2022
Last seen: Jun 26, 2025
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Topics: 16 / Replies: 2398
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RE: Baxi Air Source Heat Pump tips and tricks please

How clear was the issue made to you when you mentioned having a shower pump? Is it just the DHW system which is unpressurized? What about the wate...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Pipes and cables exposed on roof

Apologies for not responding earlier to this @michellec There are three factors which dictate the pipe coverings for solar thermal: adequate ins...

5 months ago
Forum
Solar Thermal & Power Diverters
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RE: The good, the bad and the not that great – my heat pump installation

There was an earlier post here where @dwynwen referred to high pressure in hot pipe and low pressure in the cold supply. I have FOUR different c...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: The good, the bad and the not that great – my heat pump installation

This graphic is mainly for @jamespa and I to chew over,and particularly the pipe I've annotated in light purple. The only question for @dwynwen is...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

This has been a very useful/informative case @uk_pete_2000 For the benefit of others who will read this in future, the original overview of the hous...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Baxi Air Source Heat Pump tips and tricks please

Apologies for not addressing this earlier The Red knob is an over-temperature/pressure relief valve. In the event of a fault, it will allow the ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The good, the bad and the not that great – my heat pump installation

I suspect it's a "Cold Fill" only machine.

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: The good, the bad and the not that great – my heat pump installation

Aagh! Sorry James.I clicked the wrong Edit button! Read here Yes, the knob has an adjustment for pressure...... but it's also a filter (unless...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The good, the bad and the not that great – my heat pump installation

I wonder what the pressure reducer is required for,and why one with an in-line filter is on the radiator circuit.

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The good, the bad and the not that great – my heat pump installation

Yes, I'm busy, but I hope this helps.

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

Ah... that's interesting. As it's a new build, is it by one of the major national housing developers who offer a NHBC warranty? If so, then they h...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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