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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 17, 2025
Profile Activity
Topics: 17 / Replies: 2696
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RE: Buffers, hot water and cooling

Thats presumably heat pump DT, what about radiator DT and, importantly, temp diff between flow from heat pump and flow to rads (ie temp diff across th...

3 weeks ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Is your heat pump insured?

... and incorrect given the wording you quote. I bet they would lose if you challenged it in court or through the ombudsman. As you say It seem...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Is your heat pump insured?

If it says heating system it should cover you for damage unless there is an exclusion. I would challenge them if they claim otherwise, then keep a re...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is your heat pump insured?

Are you sure its not covered by 'central heating system' or such wording. I contacted mine (which also does not mention heat pumps) and they confirme...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Difficult positioning of air source heat pump

@rikiarn Delighted to hear that the install went well. It looks neat. That buffer tank looks like its got only 2 connections, which is also w...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Buffers, hot water and cooling

The principal reason that heat pumps have minimum flow rate specifications is in order to ensure that heat can be transported away from the compressor...

4 weeks ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Buffers, hot water and cooling

It is very unlikely to break, but of course it just might if there is something unusual about your plumbing. Its obviously your choice whether to (a)...

4 weeks ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Buffers, hot water and cooling

Unfortunately even with hydraulic separation you do need to worry about flow rates unless you are happy to increase operating costs by 15%, because un...

4 weeks ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Buffers, hot water and cooling

Definitely do this. My dhw operates fine without a buffer or volumiser and your logic explains why. Agree If you are replumbing why no...

4 weeks ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Say hello and introduce yourself

Welcome. Do feel free to tell us about your project and ask any questions you have.

4 weeks ago
Forum
Introductions, Forum Rules & Updates
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RE: Is a Valliant Inline 6kW heater a BUS buster?

Just another thought - it might be worth thinking about the control strategy in relation to the backup heater. I think that the typical control strat...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is a Valliant Inline 6kW heater a BUS buster?

When i was looking I encountered one installer who does this as standard. It's cheaper to buy a direct cylinder (no coil, just an immersion), a pump ...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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