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!
Last seen: Jun 27, 2025
Have you had a chance to look at hydraulic diagram 6.1.1 in the thermal store manual? The thermal store is not part of the CH loop at all, it’s sole p...
Awesome, that should see a real benefit in performance. Are you running on just the internal midea pump or do you still have ‘Pump-O’ wired up and run...
Absolutely... Use the room stats as hi-limit stats only, set them a couple of degrees above what you find comfortable. Then adjust the weather compens...
Provided the system is plumbed as per 6.1.1 then it works as follows: When in DHW mode, the hot working fluid travels from the ASHP to 3 port valve ...
@marzipan71 Wow, that's quite the complex beast isn't it. Two F-Gas circuits, an r410a to r134a heat exchanger and another compressor inside the indoo...
Plumbing schematic for this system is figure 6.1.1 for anyone who's interested.
User manual for the 500Ltr solar thermal compatible TS is attached. Interesting bit of kit, not sure how well suited it is for a ASHP install because ...
I assume, from the picture, that the 500ltr TS has a coil for generating your DHW in it (with what appears to be 29 ltrs capacity)? If so, you're goin...
Absolutely you can run the mixed UFH circuit at a different (albeit always lower) temp than the unmixed circuit. The blending valve that you can see i...
For the benefit of the tape, the way your system is setup @marzipan71 is that you have a mixed (for ufh) and an unmixed pump group, connected to a hor...
I should have clarified, an ASHP install with a single emitter type (rads or ufh) would not require a separate weather comp’d mixer. With different ...
you wouldn’t need a weather compensated mixing valve in an ashp install as the ashp already has weather compensation. This is for the edge case wher...
- 27 Forums
- 2,810 Topics
- 66.4 K Posts
- 3,372 Online
- 7,215 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
RE: Why don't people choose heat pumps?
Surprised that you have to ask that question. Money, ...
By hml1827 , 25 minutes ago
-
RE: Adding data centre electricity costs to domestic energy bills?
Interesting reading xlinks response in October to some ...
By Jeff , 49 minutes ago
-
-
RE: Boiler Upgrade Scheme funding reduced by circa £750 million in 2026 budget
Agree with everything else. Personally I think the as...
By JamesPa , 2 hours ago
-
RE: Aerotherm and weather compensation
@jamespa I replied yesterday with detailed readings whi...
By DavidB , 5 hours ago
-
RE: Octopussy cosy 6 experience
@paultheheating Unless things have changed more recentl...
By Toodles , 21 hours ago
-
RE: Marvel Heating liquidation
@editor This is an important point. each winter, you...
By davidnolan22 , 1 day ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
Very nice. we’ve been super soggy here, but rather m...
By Papahuhu , 2 days ago
-
RE: DIY powerflushing tutorial
Interesting! I toyed with the idea too. But I installed...
By bobflux , 2 days ago
-
RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews Agree with the others on sequence: loft first...
By mk1234 , 2 days ago
-
RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@etchedpixels Agreed, just a thought for others. I am...
By Watcher , 3 days ago
-
RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
Heating been on for 4 weeks now, continuous. It's 6C o...
By trebor12345 , 4 days ago
-
Coming back on subject... A shortened version of the ...
By Transparent , 4 days ago
-
RE: Say hello and introduce yourself
Perhaps it is time for an update on ‘our’ project. We h...
By Toodles , 4 days ago


