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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 27, 2025
Profile Activity
Topics: 17 / Replies: 2711
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RE: ASHP & Radiator Sizing - Measuring Heat Loss

Thats definitely a reasonable suspicion. The initial results fom my heat pump suggest my condensing boiler (which was operated at FT50/55 so should b...

7 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

With your insulation upgrades its quite possible that you may be able to dispense with the buffer without changing the pipework. Can you clarify the ...

7 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Looking for some advice – no viable installer/system – I'm stuck

Wow, thats a lot of gas - you said 120 sq m is that the total floor area or just the ground floor footprint? For comparison my 200sq m detached was 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

If you were willing to supply more info I could probably give you a good idea if just scrapping the buffer will work. How old is the installat...

7 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Looking for some advice – no viable installer/system – I'm stuck

He is correct this is written into the BUS rules. Just to get a feel for what you need in terms of capacity: Whats your annual gas consumption, h...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Looking for some advice – no viable installer/system – I'm stuck

I wouldn't give up. You presumably have cavity walls which either are, or could be, insulated and either double glazing or the potential to fit it. ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP & Radiator Sizing - Measuring Heat Loss

Firstly, your method may well work, Im jolly impressed and please continue to post to inform us all! In response to your comment above a) I ob...

7 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. 16kW is not compatible with 22mm pipework, and barely compatible with 28mm at a typical design DT across the radiators of 5C/p> That said 16kW...

7 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

If you remove the buffer you will also need to remove the secondary pump. Re your concern, it depends. Some further detail will help determine. ...

7 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: ASHP & Radiator Sizing - Measuring Heat Loss

What is your concern triggering the question. I am impressed at trying to determine individual rooms, I was content to determine whole house by meas...

7 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Octopus design temperatures confusion

No to the first. You can reduce the temperature of the other rooms by adjusting the lockshield valves. You have to do this anyway because radiators ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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