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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 11, 2025
Profile Activity
Topics: 17 / Replies: 2826
AllTopicsReplies
Reply
RE: Ecodan cycling

The efficiency gain through weather compensation gets less at low flow temperatures, and is probably around 2% per C or less at 32 and you are already...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Increase floor temps for UFH, Samsung Gen6

4 hours isn't very long, houses have a large heat capacity (ie energy stored in the fabric) and can therefore take a day or more to reach a steady tem...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Aira Heat Pump: Stylish Scandinavian Heating

Welcome to the forum, you will find that people here are very willing to help. To answer this properly we need to know a bit more eg what was the as...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: More Samsung weather compensation oddities (8kW Gen6)

Sensible IMHO, varying the target FT might give a clue!

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: More Samsung weather compensation oddities (8kW Gen6)

OK I must admit Im a bit stumped. Reducing it to its basics, the heat pump does not appear to be reaching the flow temperature you have told it t...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: More Samsung weather compensation oddities (8kW Gen6)

OK. It does sound like its possibly the system not the heat pump, thats limiting the output, and since room temp has dropped then there quite possibl...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Column radiators for heat pump

Radiator manufacturers generally provide either outputs at lower temperatures, an equation, or the 'exponent'. For radiators other than fan radiators...

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: More Samsung weather compensation oddities (8kW Gen6)

A few questions might help point us in the right direction: Is the buffer tank plumbed 2 port or 4 port? Is there a secondary pump on the emitter ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung Gen7 setup

Not irrelevant, but you shouldn't be throttling all radiators just to increase delta t, that achieves nothing other than to make the pump work harder ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung Gen7 setup

I'm not sure what you mean by better. As a general principle you should be fully opening the valve on the radiator furthest away/last to heat up and ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Shocks when cleaning panels

Interesting There is a discussion about this hereand the discussion is consistent with the measured AC potential. Since it's the IET it's pro...

10 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Shocks when cleaning panels

genuine the frame was live, meter on it [/quote] Live AC or live DC? not that either should happen!

10 months ago
Forum
Solar Photovoltaic (PV)
Page 136 / 238
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