I’ve recently had a Daikin 16kw HP installed. I recently discussed switching to LWT mode only with Octopus who installed it. I’m struggling to find any documentation or understand how this works. Is the unit designed to be constantly on and adjust to the WD curve? This seems counterintuitive… We …

Sorry, got my piping the wrong way around! I only had it fully open to show you it, it was about a quarter closed. I’ll close it fully see difference.

[image] datoon: I’ve seen it higher previously. That’s great you’ve seen it higher. I was in the same position, I recollected (but had no evidence- monitoring etc) of low 30s l/m, and noticed once I hooked my system up to EmonCMS it wasn’t going beyond 22l/m….got back to 34l/m after cleaning…

[image] datoon: I’m still a little bit unsure of LWT, I noticed on yours today that it did turn off for periods. I’ve not seen this with mine. Maybe it’s my 3rd party controls… I turn it off manually from the app. My EDLA11 outputs too much heat at minimum modulation/output in mild weather (…

Seem to be getting there now with this setup. Still a bit up and down during some of the runs in the morning. Just trying to understand the Pump Limitation setting as my flow rates seem to drop off after the initial run down to 11 l/min. I would have thought this needs to remain around a constant …

[image] datoon: Just trying to understand the Pump Limitation setting as my flow rates seem to drop off after the initial run down to 11 l/min. I would have thought this needs to remain around a constant level. Hi @datoon , That’s good to hear things are moving in the right direction and you’…

Hi Stephen, Is there any setting regarding pump speed that limits the lowest speed that you have seen? I have my pump at 60% when sampling. I saw another parameter that was something like pump restriction, I can’t remember exactly waht it is called but I have never touched it. I would be happier…

The manufacturer’s spec sheet for Daikin Altherma 3 says you need 20 l/min (if this is the right model) [image] [image]

[image] matt-drummer: Is there any setting regarding pump speed that limits the lowest speed that you have seen? I have my pump at 60% when sampling. I saw another parameter that was something like pump restriction, I can’t remember exactly waht it is called but I have never touched it. I wou…

[image] Timbones: The manufacturer’s spec sheet for Daikin Altherma 3 says you need 20 l/min (if this is the right model) Hi @Timbones Yes, that’s to allow for defrost etc. If the system at max pump speed cannot handle 20l/m, my understanding is that it errors out and generates a fault.

I had assumed the pump limitation restricted the top end which is why I never touched it. Thanks Stephen.

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