Last seen: May 5, 2025
@toodles It is purely there to allow the heat pump to operate without any flow errors... Primary side just sits there running into the header, microbo...
@bontwoody indeed, although I would question the viability of having radiators that don't feel warm to the touch, from a homeowner acceptance perspect...
It is my suspicion too, that in milder weather, we are simply oversized. I didn't take into consideration the possibility that the ACH value used in t...
@heacol SCOP only needs to be 2.8 to beat gas - and that's what it's all about... not costing more than a gas boiler.
@jamespa flow temp.... get that accurate first, then tweak the WC curve up/down as required. Think I've got the curve vaguely correct at the moment, s...
@derek-m single heat pump, just run on weather comp, no stats, no setback. The Carel platform that my heat pump is built on allows full tuning of th...
@jamespa I’ve spent ages tweaking the P, I, and D on mine to try and get a decent response without overshoot. It’s not easy, especially when 1. We’re ...
On the subject of control strategy, some units can be set to control on LWT or RWT…. Mine used to be switchable between the two but a recent softwa...
GH has been involved in heat pump installs since the early days, he knows his stuff. He also had to come up with workarounds for flow rate issues that...
I’m sorry I can’t provide anything helpful, but I’m mighty glad I didn’t need a header or buffer in my install. It seems like a nightmare.
@bontwoody scop of 3.2 is certainly achievable, but not very easily on a retrofit unless you design for 45 degree flow, maximum. With octopus (for exa...
Pretty much all of that is true for us…. I proposed the idea, my wife wanted a Combi as her friends had them. I stupidly designed for an indoor temp...
Latest Posts
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RE: My misgivings about installing ASHP and solar panels via the ECO4 scheme...
@editor that's true Mars but I believe the same organis...
By bontwoody , 3 hours ago
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RE: How not to install a heat pump
You are right. Thinking on this has evolved over the p...
By JamesPa , 6 hours ago
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RE: Vaillant AroTherm Plus 7kW
Thanks for the comprehensive write-up, I am considering...
By Scalextrix , 6 hours ago
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@ashp-bobba ‘Wattson, how many grammes of Co2 are you r...
By Toodles , 7 hours ago
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RE: DHW SET UP with Samsung gen 5
Thats good news indeed, you are very likely almost ther...
By JamesPa , 8 hours ago
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RE: Commencing on an ASHP Installation Process
@hcas Perhaps the installers are those miniature Chines...
By Toodles , 9 hours ago
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RE: Renewables & Heat Pumps in the News
Ain't consumerism wonderful! Just because EVs could b...
By Majordennisbloodnok , 10 hours ago
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RE: Plate heat exchanger considerations
As far as I can tell my vented system would have a peak...
By Scalextrix , 10 hours ago
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RE: Air Changes per Hour - ACH and the MCS requirement
There have been a few discussions dotted around (e.g. I...
By Declan90 , 13 hours ago
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
Having made some enquiries locally I have found a compa...
By Morgan , 16 hours ago
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RE: I don't need any heating in the summer. How do I turn my Samsung heat pump off?
Thats great Someone else is struggling with this in a...
By JamesPa , 16 hours ago
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@bart Best of luck moving forward, I look forward to he...
By ASHP-BOBBA , 2 days ago
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RE: Ecodan EMP2 kit - is it any good?
Please note: heat meter accuracy at 95+% is as long as ...
By ASHP-BOBBA , 2 days ago
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RE: Flow Rate & Low Loss Headers
Houses with reasonably low loss aren't going to require...
By JamesPa , 3 days ago
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RE: Help me keep the faith with my air source heat pump installation
If it's running on WC then at night it's quite likely t...
By JamesPa , 3 days ago
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RE: Jokes and fun posts about heat pumps and renewables
@majordennisbloodnok That’s OK as long as the ‘Terminol...
By Toodles , 4 days ago
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RE: RDSAP10 effect on existing heat pump EPC rating?
@aaron All features were in place for the last several ...
By AF1 , 4 days ago
