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Derek M
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Derek M
@derek-m
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Illustrious Member
Joined: Mar 4, 2021
Last seen: Sep 19, 2024
Profile Activity
Topics: 7 / Replies: 4405
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RE: Keystone COPs? I'm not getting the efficiencies I expected on my Ecodan.

@cathoderay I have been looking through the Python programs on Github, and I think that you may have to add some additional code to either read the ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Keystone COPs? I'm not getting the efficiencies I expected on my Ecodan.

You are perfectly correct, if one studies Metrology, one soon discovers that 'absolute accuracy' is the 'Holy Grail'. When specifying calibration eq...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Keystone COPs? I'm not getting the efficiencies I expected on my Ecodan.

Your system may have been commissioned, just not very well. 🙄

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Meaning of ΔT setting in an ASHP

It would appear that DeltaT has become a topic of interest recently, so it may be useful to investigate why DeltaT is required, what is the primary ca...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan Melcloud temperature control with compensation curve

I am devastated. 😪 It would appear the 'peasant's are revolting', but then they always have been. Have you been 'eating cake' again? 😋

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan Melcloud temperature control with compensation curve

Low efficiency can be caused by incorrect WC settings, also using on - off type thermostats. Having a buffer tank, low loss header or plate heat excha...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting to Midea MSmartHome using a PC

I presume you have carried out a virus check? Am I correct in assuming that HA is written in Python, if so which version? It may not be relevant, bu...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Army Housing- Ecodan with UFH efficiency?

@calzo21 Did you find any faulty thermostats, solenoids, or stuck valves?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting to Midea MSmartHome using a PC

Here is some 'bedtime' reading detailing the capabilities of even a micro (very small) PLC.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Some big changes are coming to heat pump installation training

I think that you will find that Kev was referring to the basic design, equipment type and system layout, which in most cases are independent of the ac...

3 years ago
Forum
Safety, Regulations, Tools, Plumbing & DIY Installations
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RE: Connecting to Midea MSmartHome using a PC

PLC's were originally designed to replace relay logic, so the developed programming technique was ladder logic, which in many ways is like 'electronic...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting to Midea MSmartHome using a PC

@cathoderay I have been working with PLC based system for probably over 40 years, the few slight problems have been due to poor programming, since t...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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