Last seen: May 29, 2025
Well said, Sir! I have been trying to get this point across to reluctant ears. SCOP measures the efficiency of energy use during ACTIVE heat pump peri...
@johnmo Agree entirely.
@johnmo Agreed on size of buffer tank. They also say that the flow of secondary pump must be higher than primary, therefore they are proposing a kind...
@damon Whilst we are waxing lyrical about Viessmann as a pinnacle of heat pump system design, attached is an extract from their manual. They state tha...
Really. This is a rather sweeping generalisation. This may be valid in an old house with 2 sqm window and radiator, but different issues apply in a mo...
@harryrea I agree entirely with the concept of zoning for practical purposes, especially for control of comfort. For example, I have a log burner in ...
This could be mitigated by putting a one way check valve on the top input so that flow is only downwards. Can't think of any detrimental effects.
Apologies. Poor choice of words. Delete "dilution of temperature to emitters is minimised".
Only the difference in flow between the heat pump and the emitters passes through the tank. This lower flow helps to preserve the stratification of th...
Note a key point here though. The primary pump is connected in the return pipe while the secondary pump is connected in the flow pipe after the buffer...
@potatoman No, the installation is exactly the same as a 4 port buffer with primary and secondary pumps except that the output flow bypasses the top ...
@ashp-bobba I am afraid that you are talking to the wrong person about manufacturers preferences. However, as far as I can see, it functions the same...
Latest Posts
-
RE: Heating coming on when not required
I played with a max heating temp but there is a world o...
By JamesPa , 10 hours ago
-
RE: Pressure drop Primary circuit
I've always regarded topping up heating systems as my j...
By JamesPa , 10 hours ago
-
RE: Heat pump solutions and/or installer recommendations for France
I’d travel to France for work if you were struggling wi...
By Damon Blakemore , 17 hours ago
-
RE: Ecodan consuming 100kwh per day in new build!!!
Hmm Before doing that I would want to be certain that...
By JamesPa , 22 hours ago
-
RE: 5 Star Service from Havenwise
That's always a danger with any new good idea, @morgan....
By Majordennisbloodnok , 22 hours ago
-
Have your say in the Renewable Heating Hub Awards
It’s time to celebrate the best (and call out the worst...
By Mars , 1 day ago
-
-
RE: Mitsubishi cycling while on chilled water output
@iaack yes there's no denying that cold air sinks! I s...
By downfield , 2 days ago
-
RE: Weather compensated secondary circuits with Biomass
@andycoo that flooring sounds ideal. Extra volume is ...
By Sune , 2 days ago
-
If you are thinking of heating on the immersion conside...
By JamesPa , 3 days ago
-
RE: Surface mount or bury primaries for heat pump installation?
@tomasmcguinness, I think your best bet would be using ...
By Aventus Eco , 3 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@toodles all depends on asking the right questions! And...
By Tim441 , 3 days ago
-
RE: Commencing on an ASHP Installation Process
I received confirmation this morning that my Greener Ho...
By Sheriff Fatman , 4 days ago
-
@jamespa Thanks for the advice - very helpful. I had al...
By abam48 , 5 days ago
