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HughF
@hughf
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Joined: May 2, 2022
Last seen: Jun 27, 2025
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Topics: 5 / Replies: 484
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RE: Daikin ASHP experiences as part of our Italian renovation project

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...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ASHP in Hampshire

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...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Daikin ASHP experiences as part of our Italian renovation project

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...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Daikin ASHP experiences as part of our Italian renovation project

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 ...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Underfloor heating designer / engineer needed

@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...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Underfloor heating designer / engineer needed

Plumbing schematic for this system is figure 6.1.1 for anyone who's interested.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Daikin ASHP experiences as part of our Italian renovation project

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 ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Daikin ASHP experiences as part of our Italian renovation project

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...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Underfloor heating designer / engineer needed

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...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Underfloor heating designer / engineer needed

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...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Underfloor heating designer / engineer needed

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 ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Underfloor heating designer / engineer needed

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...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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