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Last seen: Jan 28, 2026
Attached 6 probes now to largest rad in Living 2 – temps whilst ASHP runs (think caught just at a peak of a cycle, Grant panel said 39C in, I think ou...
It’s 10C outside according to Grant panel. 36.4C coming in according to my probe. 38C according to Grant panel (using the hold down return, see valu...
@derek-m Will see if can do some surface temps of that rad when ASHP is running at some point today. Photo attached of LLH whilst ASHP running th...
sorry Derek, think I keep replying then not seeing all your posts. Same with Toodles. water pump is after LLH before the zones yes. heat s...
So the smaller rad in living 2: 30.6C in / 27.3c out - 3.3C diff larger rad in Living 2 26.6C in / 29.4C out - wasn’t expecting that. This ...
@derek-m 3 zone valves. Only one water pump in plant room, set to speed 2/3. Apologies don’t have a diagram. 1 zone valve manually on for upstair...
Living room 1: 1063W requirement 2x Stelrads at 1784W have 0.301 correction factor at D20 = 1063/0.301 = 3531 covered by 3568 from rads 2x...
thanks, currently 29c TRV side, 28.5C lock shield side. ASHP off, showing 34C Just before heating zone (5C Drop to that rad it seems)
Ahh no sorry I probably wasn't clear. Zone setup and rads below - rad with probes now attached in bold (width x height in mm). Apologies if too...
Thanks @toodles , I've put 2 probes either side of a rad in the coldest downstairs room. Will give it time and report back. Unfortunately the ASHP i...
Can ignore that, I must have gone down to check at wrong time. It's 38C which is about right now, return is 36C, so it's close already. No doubt wil...
Something I'll try to monitor is when the ASHP runs, the temp it's actually running at.I just checked now and it's on. It's 10C outside, and it's ru...
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