Hi, please excuse the tirade of posts and I hope this is appropriate and in the right section/forum, I have a Daikin 8kW EDLA08E2V3 installed by Octopus, we are really happy with the install with a full re-pipe mostly 28mm, down to 22mm with 15mm radiator connections, 80% new radiators (K2’s and K3’…

I think, I have really smoothed out the power draw (less wear and tear on the heat pump?) and flow temp with the modulation on 2, even though the house is old its well-insulated and the air temp does not fluctuate that much. I guess I just need to compare and tweak the curve with other setups as the…

Thanks for posting the links, I have a look at them later. You should be happy with a COP of 4.5 at 5C. I would be. I’m now getting around 4 when my system is running, which is a big improvement on where I was before. Just thought I’d jump in with some reassurance your performance is looking good :…

thanks for the reply @HydroSam here is my starter for 10 curve, copied from @Stephen_Crown for better or worse :slight_smile: I believe he is set on LWT pure weather compensation without a Madoka. [image]

My heat pump is identical to yours, somewhat of a self install with an heat pump company supplying the unit, cylinder and doing the commissioning. My system is open loop, bungalow, no additional pumps or low loss headers, all brand new underfloor heating at 150mm centres on 100mm PIR between joists.…

thanks @jtrent it would be good to get some data from your home assistant setup and logs when you’re up and running; every house is obviously different but together i am sure we can find a sweet spot and share ideas/methods :slight_smile:

@squarepeg77 here is the 8kW thread for optimisation I mentioned in the 9kW thread, also some videos in the original post for Modulation, maybe this could help @matt-drummer

[image] tiger_cook: This morning, I have just changed the modulation to 2 and the COP is even better with a higher flow temp, however the system has now reached the room temp and turned off, I will have to see the cycling effects, however the house was basically almost up to temp as I made the m…

Hi Neil, Thanks for all your help, I watched the videos a few days ago when you first posted them, I think I had seen all of them before but it was useful to watch them again. I changed my modulation to 8 today, it makes no difference, it was 2. I may remove it completely tomorrow, I’ll explain, …

@tiger_cook , Here is a copy of my MMI Export, I do currently have a setback scheduled for overnight but particularly in this colder weather it is killing my COP for hours in the morning to come back up even 1°c with defrosting also being a pain. While my WDC way look odd I also allow for 10°c mo…

Thanks @KnightPhoenix our setups look very similar - we have a room temp set of 20 and modulation of 8 + 38 and 30 degree WDC, but a schedule of 24/7. here is my MMI Export. 98k_MMI_Export.txt (7.1 KB) I have just tried limiting the pump to 60% the results are not apples for apples as the room tem…

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HELP - Daikin Configuration WD curve and modulation with a Madoka room thermostat

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