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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 26, 2025
Profile Activity
Topics: 17 / Replies: 2704
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RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

I think those wires might be sensor connections possibly to the points marked wht 1 2 on the diagram

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

Agree with the internet connection comment, although I think (but may be wrong) it relies on this only for the more advanced features like tariff opti...

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

Agreed, but it needs to be specific to heat pumps and learning of course. Homely goes half way to this (for the heat pumps it supports) but doesn't a...

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

Sounds like the HP side pumps are controlled by the HP. By zone valves you mean the two valves which either switch to CH or DHW?

7 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

Thats definitely true. There is a good reason however, its very difficult to do meaningful experiments and/or draw sound conclusions from the experim...

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

Glad its warmer and more particularly more consistent. Be careful about concluding its costing more though, the last few days were quite a lot colder...

7 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Vaillant Noise Reduction effect

I think the fundamentals are this: NR clamps performance at a particular level. So most of the time it will make no difference. When its cold enou...

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

Can I first echo what @transparent says above. This stuff is on one level straightforward, but at the same time not easy until you have been studying...

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

I do agree entirely that there is an oversizing problem, that design for the midrange operation is important, and that this needs to be fixed. There...

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

Why do you want to increase your deltaT?

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

Why, sorry but this is not logical so far as I can see.

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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