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Last seen: Jun 12, 2026
@ecoste Numerically, and i'm sorry if it's obvious to you already: 25L/min @ 2.0 DeltaT = ~3.5kW output so with ~1.17kW input it's a CoP ...
@ecoste what happens to DeltaT if you double your flow rate to 30L/min, via the pimary circ pump and also proportionally increase any other zone pumps...
@ecoste Here is mine for comparison on the same day: /p> 14 rads - two zones but running in simultaneouslyR410a 8.5kW unit, FTC5 generation
Thanks @ecoste , This should help @jamespa with his questions too Well, it appears to be running quite nicely, no cycling as you say... Flow rate on...
@ecoste are you willing to share your interactive MELPump Detailed Report from a sample day to help us analyse?
@toodles Not quite the case, NetZero is free (including the capacity monitoring) but things like automations and diagnostics are part of the NetZer...
On a slightly different topic, I had a calibration today and it's almost the 1y anniversary of the install Capacity at install was 13.7kW and now si...
Okay, thanks for explaining - it would be the former. The heat pump current state is always reported actual, regardless of attempts to change...
@majordennisbloodnok @boycey So to clarify, I don't belive that @boycey is using the dedicated MELPump CN105 Adapter and only using MELCloud integrati...
@boycey are you absolutely certain that Havenwise control has been relinquished..? It sounds very like the settings that it uses
I do mine dynamically - so here i start at 32C setpoint (3C outdoor) from my curve and then will increase dynamically as required up to the minimum wh...
I would say yes - the floor frequency is linked to outside temperature, so for example in my 8.5kW R410a monobloc unit at 0-5C outdoor the minimum fre...
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Latest Posts
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RE: Heat pump installation quotations
@batpred The only draughty place is in the living ro...
By sttpd1917 , 17 minutes ago
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Don't you dare. You just carry on as you are; as @batpr...
By Majordennisbloodnok , 33 minutes ago
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RE: Heat pump design review please: 5 kW Vaillant aroTHERM Plus heat pump
@ragtime27 some rooms in our house only have one place ...
By Judith , 38 minutes ago
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RE: Help me keep the faith with my air source heat pump installation
I didn't know about those, they look like good pieces o...
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@mkz, that's very helpful. Even if Urban Plumber are no...
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RE: Several AC coupled batteries
That is a good point, a manufacturers can stop trading,...
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My first question is why bother with the auto balancin...
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RE: GivEnergy inverter tripping due to over-voltage?
@transparent the inverter was installed in 2021 and afa...
By Tim441 , 5 hours ago
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I share the same experience as @majordennisbloodnok hav...
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RE: Say hello and introduce yourself
I hope so, @toodles. It's not often that we see a situa...
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RE: Electricity price predictions
Good point, I do expect the bonus of putting my energy ...
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RE: Daikin ESPAltherma and Home Assistant installation
@bash, something we haven't touched on already relates ...
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Vaillant arotherm plus 12kW. Installed March 2025. Ex...
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