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iancalderbank
@iancalderbank
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Noble Member
Joined: Oct 17, 2022
Last seen: Jan 14, 2025
Profile Activity
Topics: 0 / Replies: 643
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Reply
RE: Rate the quality of your heat pump design and installation

@davesoa all of those are good things to get done prior to changing the source to a heat pump, and I did a number of those things myself prior to doin...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung gen 6 short cycling

what I am saying to you is that you appear to have clear logically provable evidence that your particular samsung controller board is faulty on its PW...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung gen 6 short cycling

@iantelescope so by that logic, the pumps are fine but the PWM source (samsung control board) isn't. I have a PWM source that in theory is the same as...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung gen 6 short cycling

@iantelescope so according to the logic of this (Correct me if I'm wrong) you've proven that the radiator-side pump modulates as expected with a PWM...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: PWM pump or not?

@bontwoody pump definitely runs at lower power when PWM'd down. what the effect on COP is I am not personally qualified to comment but there is plenty...

3 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: PWM pump or not?

I've seen that commentary from graham before that the Samsung G6 PWM doesn't work. it 100% does , I guarantee it , at least on my G6 system, with a UP...

3 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: PWM pump or not?

cylinder goes on the shelf and you crawl under to get at the plumbing? nice! 😀

3 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Samsung ASHP scheduling help

so, found time to get back to this now. my house is fully on the ASHP including DHW, and I've installed an ESP32 board to talk to the modbus controlle...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung gen 6 short cycling

@derek-m its all in the grundfos documentation and there's a standard for it as well VDMA Einheitsblatt 24244. page 17 of the relevant grundfos pump m...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Say hello and introduce yourself

@bontwoody @jamespa I also have the same background and interests. I guess it's not a coincidence that we all ended up in exactly the same place in te...

3 years ago
Forum
Introductions, Forum Rules & Updates
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RE: 12kW Samsung gen 6 short cycling

@iantelescope ok, I think I follow, but I'm not sure of the accuracy of a simple voltmeter in tracing the detailed behaviour. as it is a pulsed signal...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung gen 6 short cycling

@iantelescope as per previous, my pump , UPMM type, has no LED's. the obvious indicator of "is PWM working or not" is that with PWM heating profile,...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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