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JamesPa

@jamespa

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Illustrious Member

Joined: Apr 3, 2023
Last seen: Nov 9, 2025

Topics: 18 / Replies: 3318

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RE: Repiping and Reconfiguring our Heat Pump System Including Removing the Buffer Tank - Heat Pump Retrofix

I congratulate you on your determinism and, lihe @Grahamf an sure that this plus some robust engineering will win through. I don't know much about y...

1 month ago

Forum

Air Source Heat Pumps (ASHPs)

RE: How to Understand Wiring Up a Heat Pump

@renewables345 I completely agree with @transparent and @pirate-rich that there is absolutely no way you can 'learn' what decades of experience teac...

1 month ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Why Air Release Valves and Deaerators are Non-Negotiable

FWIW, nearly a year after my heat pump install, I bled a radiator today and probably a third of it was filled with air. I do have an autovent fitted ...

1 month ago

Forum

Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls

RE: Glycol

If there are indeed antifreeze valves you dont need glycol. Look for these outside near the heat pump, only just protruding from the insulation. Som...

1 month ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Help me keep the faith with my air source heat pump installation

@adamk Its a bit complex: My 28mm primaries run for about 1.2m outside then pass through a wall into the utility room where they run for about 2m in...

1 month ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Why Air Release Valves and Deaerators are Non-Negotiable

I confess to the same misgivings! My installer fitted one so I have one, but would I fit one again, possibly not, or if I do as you say fit an isolat...

1 month ago

Forum

Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls

RE: Sizing - Save me from my headache

If you get an R290 pump you should be able to heat the tank to 65C which will give you 550l of water at 40C from a 300l tank. You probably don't want...

1 month ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Sizing - Save me from my headache

Lets look at this the other way round. If your loss is 5kW and your heat pump can do 6.5 (absolute worst case with the Vaillant so far as can be told...

1 month ago

Forum

Air Source Heat Pumps (ASHPs)

RE: How to Understand Wiring Up a Heat Pump

Firstly welcome to the forums, I hope you will find us friendly and helpful. And congratulations for being interested in renewables. Hea...

1 month ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Seal the Deal: Don't Let Your Heat Pump Leak Energy

Thats rather easy to understand, although it begs the question whether relocation is an option but Im sure @mars has already considered that! ...

1 month ago

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