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Last seen: Mar 21, 2026
There are some compelling arguments for putting the volume on the flow side and I’m almost persuaded. However the emphasis appears more weighted on de...
@jamespa thanks for the thoughtful reply. Would be interesting how the replies pan out.
Great answers @old_scientist. One other query I have with position G is - the location is on the return side…. after the DHW cycle the system feeds 50...
So... where would you install the volimiser? See choices in the attached sketch. I think this will help to resolve some nagging inconsistencies in pre...
If your UFH is a high mass construction you may be able to store quite a bit of heat so you can run the heating above the cycling temperature or to a ...
I recall some basic maths kwh= LPS X DT X SHC Where the SHC is specific heat carrying capacity (SHC of water is usually quoted as 4.2 whereas glyc...
Hi @jamespa I’ve been travelling for a few days and felt I needed to address some unanswered messages from you. I think and hope we just had some ...
Sorry James the radiator output is governed by temperature of the water inside them and the lower the flow temperature the slower and sustainable the ...
I think Rob Berridge states on this episode that you can’t have “too much” radiator capacity on a HP installetion (if you want the quote try 12 mi...
As per Robs comment @robs this is a R290 model which will operate down to 2kwh output…. ironically R290s are being hailed by some as the high te...
james you appear to be sighting an example which I have never said. I have never asserted this statement so I don’t see why you are saying it. Abov...
Latest Posts
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@majordennisbloodnok good advice, thanks for that.
By David999 , 31 minutes ago
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RE: Setback savings - fact or fiction?
I agree, but in assessing the 'saving due to setback' i...
By JamesPa , 1 hour ago
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RE: My Grant R290 9kW Heat Pump Installation
I am following this thread with great interest and than...
By TaffontheTaff , 3 hours ago
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RE: Sizing an ASHP; Heat loss and kW
You can't measure heat loss with a website. But you ca...
By JamesPa , 18 hours ago
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RE: Estimating true heat loss from twelve months of consumption data
@ian33a — I have a sort of residual interest in this pr...
By cathodeRay , 20 hours ago
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Hi, Thank you. So its a Daikin Altherma 3M...
By Lbart68 , 23 hours ago
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I have a Contactum CU. Would the below RCBO (descriptio...
By Batpred , 24 hours ago
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RE: Samsung gen 7 HP 12kw - auto control issue and water law
@chainreaction Agree with @broadsman , it seems many ...
By Batpred , 1 day ago
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RE: Anyone concerned about GivEnergy?
@transparent Thank you and appreciate your timely reply...
By SUNNYSKIES , 1 day ago
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RE: Grant Aeona 3 R32 cycling with weather compensation.
The hot water heating looks normal. The heat transfer ...
By GrahamF , 1 day ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
Good questions @temperature_gradient. My understanding ...
By springswood , 1 day ago
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RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
All going according to plan, mid July we get that 7kW a...
By Batpred , 2 days ago
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Current metrics - DHW target set to 47c
By TaffontheTaff , 2 days ago
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RE: New Solar, Batteries, Air Source and Under Floor Heating advice please
You’re right: UFH works best with high-conductivity fin...
By bafab , 2 days ago
