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Abernyte
Abernyte
@abernyte
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Honorable Member
Joined: Dec 20, 2022
Last seen: Nov 12, 2025
Profile Activity
Topics: 4 / Replies: 240
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Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

Thank you gentlemen/people (can't be too careful now) perfectly reasoned arguments that fit the observed evidence. The only fly in this ointment is w...

8 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

Is that not just indicating that the primary pump has stopped momentarily while the unit defrosts using the hot refrigerant gas?

8 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

"I think it's highly likely mitsubishi don't switch off the water pump because the water is the source of the energy." So the official Mitsubishi vi...

8 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

Well according to Mitsubishi's technician in the video it is the hot refrigerant gas being reversed via a reversing valve and expansion chamber. No n...

8 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

This whole "hot water from the primary is used in the defrost" is confusing me. Unless it is not general across all makes the Ecodan reverses the flo...

8 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Heat Pump Sizing & Installation Costs

2019 180sqm timber frame 14kW 300l DHW 16 new rads K2 and K3, new delivery pipework, new electrical consumer unit £12,200 less RHI (Scot) £1...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Replacing knackered oil boiler with ASHP - Perthshire

It is pointless adding EWI to a timber framed house with external block rainscreen. The movement of air around the timber frame inside of the block ou...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Winter over? How cold was it compared to last winter?

In draughty NE Scotland the monthly average temperatures for 2023/2024 Nov 23 5.2C, Dec 23 4.5C, Jan 24 3.2C, Feb 24 5C = 4.4C 2024/2025 Nov 24 ...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Electricity price predictions

Can we also assume that I don't think tomorrow's announcement is anything to get too excited or worried about. doesn't apply to those in the po...

9 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Electricity price predictions

In 2023 European gas imports were Russia - 15% and USA - 19% (mostly in LNG). I find it slightly misleading to frame the supply as you have. I am not ...

9 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Domestic Weather station

I have used a Bresser 7 for 4 years. Very impressed with only one malfunction. The rain gauge stopped giving sensible output which turned out to b...

9 months ago
Forum
Well & Truly Off The Grid
Reply
RE: Mitsubishi ASHP - Circulating pump noise?

I have an Ecodan with the Mitsubishi maintenance package and it is a condition of the annual maintenance agreement that glycol is used in the system. ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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