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Last seen: Oct 16, 2024
@kev-m I think that’s a fair challenge and has been bought up on that site too, I didn’t write the content, just contributed my experience with the in...
@greekgoddj @transparent was referring to a thermal storage to hold energy, this is different to the basic DHW cylinder. Check out this article where ...
@jonathans good spot. I did contribute to that post over on the OVO forum. I was initially a causality of a poor installer but after a lot of to and f...
@peterr I’m part of a trial looking at retrofitting ASHP to properties and my system was audited. The external insulation on the flow/return was picke...
@toml1981 I have a four bed house, obviously could be lots of other differences, but I’ve been running my system as Derek describes for the last two w...
@alec-morrow welcome to the forum, I’ve only been here a few weeks. As a casualty of an underperforming ASHP controlled by a dodgy thermostat it’s goo...
Thanks Derek Ive used your numbers, I don’t think they are far off my pump, the Daikin is smaller but isn’t quite as efficient, so close enough for ...
Not sure it makes much difference but the total emitter output at deltaT50C is 21500w, another thing incorrect on the original installers heat loss re...
@derek-m I've put my numbers in to your modelling sheet. Not entirely sure I understand what is that's going on, but if I'm reading it correctly I ...
Hi Derek I balanced the system about a month ago but it's not been done by a professional. I've watched some YouTube videos and have a IR thermomete...
@saenergy My controller is set to a 7C differential but I'm definitely not seeing that differential at the lower leaving temperature, though the ho...
@derek-m Hi Derek I would be good to try some different numbers in a modelling tool. Are you able to send me a copy please? COP still hovering ...
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Degrees of Separation
Latest Posts
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RE: Siting of the external sensor on a heatpump
Of course had the heat source been a heat pump it would...
By JamesPa , 36 minutes ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
In fairness all heating has cost a lot to run in recent...
By JamesPa , 3 hours ago
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RE: Is it the house or the equipment?
@springswood We have two Daikin single split A2A syst...
By Rob of York , 4 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
You should (almost) always reject having a buffer, by w...
By JamesPa , 1 day ago
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RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners
Indeed we are invvestigating AC at present and are havi...
By Toodles , 1 day ago
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No, but the heat pump must be capable of delivering a S...
By JamesPa , 2 days ago
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RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 2 days ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
R (The R Project for Statistical Computing, I use it wi...
By cathodeRay , 2 days ago
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RE: Vaillant Arotherm Plus 7KW need a service on it
booked it with Vaillant. will use them until i can find...
By AdamK , 2 days ago
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RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 2 days ago
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RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 3 days ago
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RE: Vaillant Aurotherm - Heater Wire Position
Ah, good point. I need to check if this was installed i...
By Batpred , 4 days ago
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@batpred thanks for getting a copy. Appreciate the supp...
By Mars , 4 days ago
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