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RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW  

By JamesPa, 1 week ago

  @CBrenewable @ashp-bobba seems to be on the case so I will step out for now to avoid possible confusion, name check me if you want me to step back in/it is not solved.
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW  

By CBrenewable, 1 week ago

  @davidnolan22 - Screenshot of energy input/output attached. System was commissioned on 8th April. Note: value for 16th is significantly higher since for some unknown reason MELCloud didn't bother to g...
Transparent RE: ASHP Pipe sizes  

By Transparent, 1 week ago

  Height above ground level matters only when you're considering the position at which you'll place the drain-valves.They'll obviously need to be at the lowest point of the pipework. The two conduits sh...
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW  

By davidnolan22, 1 week ago

  @cbrenewable What's the heat output each day for the last few days, and the input. My COP is 6 and over at the minute. The big rads not getting hot maybe an issues, as its not giving out the heat it...
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW  

By CBrenewable, 1 week ago

  @ashp-bobba - your arrows on the picture are correct. I've followed the pipes just now and confirmed this. How could I check the pumps are installed the correct way around/aren't otherwise fighting ...
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW  

By CBrenewable, 1 week ago

  @jamespa - Yes, 0.5bar is the max on that bypass valve. Range = 0.1 - 0.5 bar. How would I validate that the pumps aren't fighting each other? To cover off a question someone asked previously I'm not ...
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW  

By ASHP-BOBBA, 1 week ago

  I am initially thinking it looks like you have one pump pushing through the other if the flow and return are as I placed the arrows?
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW  

By CBrenewable, 1 week ago

  @ashp-bobba - thanks for the detailed thoughts. I'm aware that my rads upstairs seem to be working well and I have a reasonable density of rads in not that big of a space (small rooms) even if each ra...
RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW  

By ASHP-BOBBA, 1 week ago

  @cbrenewable So just to make sure, from the picture it look like the arrow I have drawn? Attachment : 11224-IMG7230-1.jpg
trebor12345 RE: Hitachi Yutaki SCombi Heat Pump - Thermal Off's  

By trebor12345, 1 week ago

  I am drawing the same conclusion that this system for some reason switches off for 3 minutes then 8 minutes latter does it's de-ice cycle. It does this even when the outside air temperature is 20 cen...
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