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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Jul 22, 2025
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Topics: 16 / Replies: 2632
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

That can and does happen and its a good thing! The tank will be stratified, meaning it will be hotter at the top than the bottom (because hot water r...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

Thanks. Im guessing the same. I am not a Samusng expert (or indeed a heat pump expert) but Im hoping the changes needed, to get it running open loop...

5 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

@heacol Thanks for the info on pumps and head (Im presuming when you say pumps in parallel you also include in series - as here); with that and the me...

5 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

Ok. I'm going to seek some advice on operating two pumps in series, which effectively you already have but when the buffer is removed becomes more dir...

5 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

I can't see why that would help. Your heat pump cycles because the demand is less than it's minimum output. The minimum output won't change by chang...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

@alfapat are they all the same model? Is there any way you can tell what they are wired to? The answers might affect the strategy for buffer rem...

5 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

Nice drawing, Im glad you did it. have you really got two pumps in the primary, one on the feed one on the return. If so are they (and the pump on ...

5 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: The good, the bad and the not that great – my heat pump installation

@dwynwen as I thought it goes nowhere. Very diligent of the installer to insulate it! Please let me know how you get on with reducing the hot water...

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

@dwynwen just a reminder (as it was now a page of posts ago) to please post a picture of the handheld thermostat.

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 posted a reply to the question about the pipe. re your question above, where is @dwynwen seeing a pressure differential, Im confused (or forgetfu...

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

Possibly nowhere, just a diligent installer insulating a tail? I think it might be intended for a direct-attach expansion vessel see here/p>

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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