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Last seen: Feb 19, 2023
@soniks FYI we have all brand new pipework and its 28mm, we have the volumiser with the heat element in it and we are getting flow rate of 32 with rad...
We have a 1920's house with a new big extension. We externally insulated and rendered the existing house with 70mm celotex along with high quality mod...
there is a single pipe in which is primary from ASHP and a single return pipe ... primary circuit is on the right as you face the LLH .... secondary i...
First picture shows a symbol not in the manual (as far as I can tell) so wondering if this is the supplementary heating in defrost cycle. The next p...
Important was that box EP001 was wired and it turns off the master valve supporting DHW prioritisation (which it wasnt at first) ... this now works an...
FYI the Grant combined volumiser / low loss header in my system has an immersion. The immersion doesnt connect to EP001 and instead connects directly ...
For the last month I have taken daily meter readings, for my 17kw grant ASHP the least usage being 25th Dec with 37kw/h, the worst being yesterday at ...
As I dont have an electric car and averge less than 30% electric between 00:30 and 6:30 I decided to switch from Economy 7 to single tariff .... now I...
thanks Derek, we do have a LLH my understanding thats to provide hydraulic seperation of primary and secondary circuits and cope with having multiple ...
The TM1 was 45 degrees ... my understanding is this is the max flow temp at -4 degrees for the weather compensation ... I reduced to 40 to try and see...
Hi @derek-m From the original spreadsheet before the reneuvation project started This was based on heating flow temp of 50 degrees due to upstai...
Hi @AllyFish, thanks for the detailed reply, ... I had no idea of the defrost details .... answers follow "17kW ASHP. Who sized it & on what...
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Latest Posts
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RE: Where heat loss surveys seem to go against practical reality
I am amazed that there is not something out there to me...
By JamesPa , 3 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
@bobflux The hydraulic simulator is very interesting...
By Rob of York , 8 hours ago
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RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
By Rusty , 13 hours ago
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RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 1 day ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 1 day ago
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RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 1 day ago
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RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 1 day ago
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It’s been out a few days and Amazon has already attache...
By Mars , 1 day ago
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RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
By Batpred , 2 days ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
A very good point. In effect, the DHW pipework is an em...
By cathodeRay , 2 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Here are those same three month periods for 202...
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RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thank you for your reply above. As alway...
By Old_Scientist , 5 days ago
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
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