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davidnolan22
@davidnolan22
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Joined: Jan 15, 2025
Last seen: Jan 7, 2026
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Topics: 0 / Replies: 136
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

@jamespa thanks again. It makes sense. Before the new bigger LLH, I had a 35mm piped distribution header. There was no blending there, only when I put...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

Hi Gary, Yes, I think I’m getting the hang of it and whats gone on this winter. And yes, during the cold snap previously there was not enough en...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

That’s a really thoughtful reply. Thank you. It’s a great help. lots to ponder. My view has been consistently that i don’t need much more than 35 t...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

I mean, if I put in 45 on fixed flow as the flow temp, open all Zones and leave it, it will never get there, spends hours ( I’m mainly UFH in screed)...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

@jamespa What controls the pumps Wireless stats control the rad and 3rd party stats the UFH, all of them calling for heat all the time Are you ...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

@jamespa At the minute I have all stats turned to max and running weather compensation. Its running 24/7. all the rads are fully open, nothing is s...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

@gary yeah, I have one wireless stat doing the rads, and then 3rd party ones which i just have turned to max now as they are a total pain in the ass.

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

@jamespa House is 258m2, recently renovated. done a good as job as possible with insulation: stone build but most external walls old and new have ...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

Just to update here on the above. My installers came to hopeful sort my heat pump system out. They swapped a piped header for a bigger low loss heade...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan 2 zone setup issues

@michaelsimpsonuk hi, I’m still aware that this isn’t your heating system: it’s your landlords. I’d tell them your concerns or move out.

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan 2 zone setup issues

That’s quite expensive, but, to put into context. My heat loss is about 9 to 10kw at 0 degrees. And with my high thermal mass, I can only run my house...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan 2 zone setup issues

On that point, I’d agree. I’ve a 260m2 retro fit. Parts of it are 18th century cottage. I’ve got 11.2 kw. It’s not got lots of spare capacity, but see...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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