Search with Wattson

Notifications

Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

Bad COP? Long Pipe Run on Cosy6 Saga Continues.

Air Source Heat Pumps (ASHPs)

Last Post by Lucia 1 year ago

6 Posts

5 Users

4 Reactions

1,220 Views

RSS

Toodles

(@toodles)

Famed Member Contributor

Joined: 4 years ago

Posts: 2711

Topic starter 11/11/2024 10:43 am [#1851]

I don’t think that long pipe run is helping, and if you don’t care for a buffer tank or LLH - don’t view! Terminology a little rough too! Toodles.

Toodles, heats his home with cold draughts and cooks food with magnets.

🤦‍♀️

Quote

AllyFish

(@allyfish)

Prominent Member Contributor

Joined: 3 years ago

Posts: 518

11/11/2024 4:48 pm

With the ASHP installed in a neighbouring street it's going to struggle with heat loss & hydraulic resistance. Clearly no-one had done any proper hydraulic calculations to determine index leg resistance and static head in m, to check against the McDonald's Bin primary pump capacity. If they had, they'd have used hydraulic separation and a secondary pump circuit from the start.

👍

ReplyQuote

Toodles

(@toodles)

Famed Member Contributor

Joined: 4 years ago

Posts: 2711

Topic starter 11/11/2024 5:05 pm

@allyfish That was my thought, looks like the installation is now turning into a canine’s table of comestibles rather than a neat installation with a good COP. I did note the comments passed on from Octopus (if they were interpreted correctly) that the lower flow temperature he had set was counterproductive as far as efficiency is concerned. Maybe the refrigerant or the compressor designs that RED have produced work on slightly different lines to those we have learnt to expect from other manufacturer’s designs? Regards, Toodles.

Toodles, heats his home with cold draughts and cooks food with magnets.

ReplyQuote

TheBinMan

(@thebinman)

Eminent Member Member

Joined: 2 years ago

Posts: 18

11/11/2024 5:38 pm

Presumably the installer would have realised during commissioning that the pump inside the ASHP wasn’t up to the job and witnessed the low flow rate which would have prompted them to reconfigure the pipe work and introduce hydraulic separation?

ReplyQuote

wreckguru

(@wreckguru)

Eminent Member Contributor

Joined: 1 year ago

Posts: 29

12/11/2024 4:52 pm

@allyfish at least with this bin you do not have to have a burger too, lol.

👍

ReplyQuote

Lucia

(@lucia)

Honorable Member Member

Joined: 2 years ago

Posts: 354

12/11/2024 6:47 pm

@toodles

the installation is now turning into a canine’s table of comestibles

It's a a great big (predictable) PR hole 🐙 dug for themselves - they fell for the fan boi influencer rap, let it get filmed with the 🐙 heat pump Head Honcho while installing it halfway up the street. Now it's covering for one cock-up after another. 🤦🏻‍♀️

My installation team would never have allowed that to happen they didn't even approve a 10m internal (in my cellar) pipe run that the heat loss surveyor suggested. That's one of many reasons why I liked them. They are heat pump purists. 😁

Meanwhile, it would drive me nuts to have my system out of my control. I want more access to data not less. However, Fan Boi only shares his data with 'members'. 🤓

👍

ReplyQuote