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Boycey
@boycey
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Eminent Member
Joined: Dec 15, 2024
Last seen: Feb 14, 2026
Profile Activity
Topics: 2 / Replies: 39
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Reply
RE: Analysing MELcloud heat pump graphs

@gary this is as you suggested, the last graph above without the Hw bits. not a good delta T

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Analysing MELcloud heat pump graphs

@gary my thought process was to run the flow temp low ie 25c but for longer, if I raise the flow temp it will run for shorter periods and hotter. I wa...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Analysing MELcloud heat pump graphs

It was colder last night so It looks like the flow temp is up as per westher comp. Maybe as @Gary says below ecodan doesn't like minimum flow temp to...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Analysing MELcloud heat pump graphs

@sunandair some graphs from last night,do thesel ook a bit better. not sure why flow and return are the same on the last one

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Analysing MELcloud heat pump graphs

@gary ive set it 25c til it gets to down to 15c, and 34c at -6c. its a modern well insulated flat, south facing, also has heat recovery ventilation.

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Analysing MELcloud heat pump graphs

@gary hi, thanks for your input, I've just been flicking through the ecidan set up booklet, just cage across flow temp range, in service menu/operatio...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Analysing MELcloud heat pump graphs

@sunandair thanks again. So my graph where the flow and return are straight across, contant delta T more or less, do you think that's good or bad? Wit...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Analysing MELcloud heat pump graphs

@sunandair thanks for your replies, yes I think your right, in what little I know so far, I'm just trying to understand and find the right strategy. M...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Analysing MELcloud heat pump graphs

@sunandair hi, HP is on all the time, as in it's on weather comp and not on timer etc, all stats set to about 19.5c from 10pm til 6am, then they chang...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Analysing MELcloud heat pump graphs
1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 41
Views: 6131
Reply
RE: Running ASHP efficiently, general thought process. (Low and slow)

@sunandair hi. So if the Delta T is OK when doing DHW that's good, but not so on ufh? Could this be the flow rates on manifold need adjusting, I've re...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Running ASHP efficiently, general thought process. (Low and slow)

@sunandair Hi here's the hourly screen shots from 6am til now 3:30pm, DHW comes on at 11am

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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