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Last seen: Apr 3, 2026
Yes, but if the radiators aren't even warm... Then it's unlikely the room will be warm either. Quick update. Vaillant have been investigating, no real...
@derek-m It's hard to tell because it's been warmer outside (10 degrees today) and I had to put the heat curve up to 0.9 in order to get any heat in t...
Hi @derek-m - the plumber popped over today so was able to get some readings which are as follows: BufferFlow 34Return 31 Radiator circuitFlow 34R...
@Derek-M what was the solution to this issue?
No not yet, I don't have the right gear to monitor. Just paying £14 a day currently...:(
I don't have equipment to measure the temperature accurately (plumber did the last readings), but with an infrared laser thermometer I'm getting UFH...
@alec-morrow you can see it here. The rads are definitely coming off the bottom two. If switched, won't that mean the UFH is too cold though given the...
First picture uploaded was a bit small.
@colin not that I can see, just a Grundfos pump set to level 3 (highest speed). Pipes feel cold when the UFH is on and warm when it isn't. That valve ...
@colin not that I can see, just a grundfos pump set to level 3 (fastest) @derek-m - here are some photos of the buffer tank. There are four pipes co...
@mattengineer I have been told the radiators have been oversized to the requirements of the ASHP system. The radiator on the landing is a triple radia...
Hi @derek-m There are little caps on top of the manifold, which are between 2.5/3 when the heating is active. I assumed this was litres per minute,...
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Degrees of Separation
Latest Posts
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RE: How quickly would you want/expect heat recovery to take from setback?
@jamespa I was thinking primarily of raising the flow t...
By AndrewJ , 4 hours ago
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He's down for a bit of maintenance... I'll restore him ...
By Mars , 5 hours ago
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RE: Why don't people choose heat pumps?
So a bunch of things rather than generate a load of rep...
By EtchedPixels , 5 hours ago
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RE: Heat Geek Zero Disrupt: Are We Sleepwalking Into Another Race to the Bottom?
That is a good approach and an excellent result. For co...
By Judith , 9 hours ago
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RE: Our 10 year old Grant heat pump failed
@editor @mike-patrick A 10 year old grant heat pump ...
By JamesPa , 12 hours ago
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RE: Buffer tank on a 2 x 14kw Ecodan system
In principle I agree but for what? OP has drawn a sche...
By JamesPa , 14 hours ago
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RE: Say hello and introduce yourself
Good to see you here, @claytonbrowne, and welcome to th...
By Mars , 17 hours ago
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RE: Issues with Samsung heat pump – high running costs and house dropping to 11C overnight
It looks very much like a radiator balancing i...
By hml1827 , 1 day ago
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I have, @transparent, but chose to pose the question he...
By Majordennisbloodnok , 1 day ago
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RE: Should I change my cylinder when changing from a gas boiler to a heat pump.
@jamespa’s point about payback is a useful counterbalan...
By Mars , 2 days ago
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If it no longer works after forgetting its settings and...
By bobflux , 2 days ago
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RE: Plug and play solar. Thoughts?
Impressions so far from the one I've installed are that...
By EtchedPixels , 2 days ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
@editor And as an occasional contributor, may I say wel...
By Toodles , 2 days ago
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