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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Dec 28, 2025
Profile Activity
Topics: 19 / Replies: 3739
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RE: Changing from 4-port buffer to volumizer

@andy1618 see the very sage advice from @editor above. I took would bypass the installer initially and/or check the installation manual.

8 hours ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Help me keep the faith with my air source heat pump installation

@adamk FWIW I managed unintentionally to 'coax' mine into making more noise than usual . The noise sounds rather like what you are experiencing and a...

12 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Help needed with Grant Aerona 3 issues

Ok please post back once experiment complete. Give it a couple of hours to be sure. Ok looks like you have an llh which makes fault diagnosis mo...

13 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

You are in essence right. Adia only works with selected heat pumps and I dont think cosy is one of them. Don't worry, none of this is necessary if ...

13 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Help needed with Grant Aerona 3 issues

I hear what you say but I would still perform the experiment it to be absolutely certain. Some thermostats, which should never be used with heat pump...

14 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Help needed with Grant Aerona 3 issues

The black cylinder in the second photo looks like an llh. Is there a water pump nearby and how many pipes feed it? You can't ignore the fault wheth...

15 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Changing from 4-port buffer to volumizer

Here are my comments, others may have something to add or even dispute what Im suggesting. 1 - Yes ideally, but it doesnt matter that much so not so...

15 hours ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: What suggestions to give to someone with a buffer tank - how best to set an unnecessary buffer tank up

Possibly, but it would also reduce DeltaT across the emitters which means that mixing matters less. With a small buffer tank (such as 50l commonly fi...

16 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Help needed with Grant Aerona 3 issues

@fleurcules   Welcome to the forum and hopefully we can help. Im not a Grant expert but will try to offer general advice, but first a couple...

16 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP sizing - value of Heat Transfer Coefficient

Sorry, but I cant see what the point of this is unless its to take the mick from a serious topic (and possibly also of science). Its not even funny b...

1 day ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

TRV heads do indeed close completely once room temp is reached (or thereabouts), by depressing the pin on the valve fully. However there is a degree ...

2 days ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

Yes. In addition or instead. The point us that trv bodies with decorations caps offer an alternative (or additional) and more linear adjustment mec...

3 days ago
Forum
Air Source Heat Pumps (ASHPs)
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