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JamesPa
JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Jun 9, 2026
Topics: 25 / Replies: 4953
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RE: DHW heat loss through pumps.

Ah, you have a water circulation loop, (like in hotels) which does exactly that, keeps water circulating round the house continuously so you can enjoy...

7 months ago
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RE: 10kw heat pump run in 24*7 data?

FWIW with the colder weather and defrosts kicking in overnight my 24hr COP has, according to Vaillant, dropped to 3.4. Not really surprising.

7 months ago
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RE: Installer Fitted 9kW Instead of 11kW Heat Pump and Changed MCS Paperwork - What do I do?

Thats good news and what might reasonably be expected if its close to the correct size. OAT sensor needs to be out of the sun. On a Vaillant its...

7 months ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread

I have set all TRVs open, the set temp is 30c which is max (at around 7pm last night from 25c) great, that establishes the right conditions to set u...

7 months ago
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RE: DHW heat loss through pumps.

Welcome to the forum. feel free to ask any questions. I think you may need to explain your set up a bit more. What are the 'heatmisers' doing exac...

7 months ago
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

@andrewj Sorry Im confused. What is the actual problem you are now trying to fix? I thought it was lack of balance between upstairs and downstair...

7 months ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread

A decorators cap will close the trv completely if you screw it down completely. If you don't it will partially close the trv, more controllably than ...

7 months ago
Reply
RE: Mitsubishi Ecodan R290 10kW performance

Don't know answer to final question. Your contract presumably is with installer so it's his problem to solve if Mitsubishi take an unreasonable tim...

7 months ago
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RE: 10kw heat pump run in 24*7 data?

0.65.   Heating curve of course depends on rad size/required ft. Mine was designed for 45C FT at -2,:in fact it's running a couple of degree...

7 months ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread

If LSVs prove troublesome (which they definitely can) take the heads off the TRVs and fit decorators caps. That gives you a much more linear and fine...

7 months ago
Reply
RE: 10kw heat pump run in 24*7 data?

My 7kW Arotherm runs 24x7. I get a SCOP of 4 and that (with a sensible electricity tarrif) makes it quite a bit cheaper to run than my gas boiler was...

7 months ago
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RE: Mitsubishi Ecodan R290 10kW performance

Thats bad but at least there is an acceptance that its faulty. I might be tempted to tot up the excess electricity and expect the installer/mitsubish...

7 months ago
Page 130 / 416
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