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davidnolan22
@davidnolan22
Member
Estimable Member
650 kWhs
Joined: Jan 15, 2025
Last seen: Apr 12, 2025
Topics: 0 / Replies: 95
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

@sandman1600 you need to measure whats going on really before you make loads of changes. If you can measure the temp of the flow and return to and ...

2 days ago
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

the reason why cop is bad is the delta t's on the primary circuit are small, so its not giving out much energy by the mitshi calculations. nobody kno...

3 days ago
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

Has anyone been to check what is going on with the secondary side of the system with the UFH? I’ve not read all the posts recently. The minimum modula...

4 days ago
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

Yeah, big balance isn’t it. Big enough to heat commonly cold days, but not so big ruins more typical temps. im not sure where in the country the unit ...

3 weeks ago
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

I’ve circle your compressor output. It’s just going from low to minimum output to off. And then as we thought, off all day. But it’s warm today, but m...

3 weeks ago
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

@sandman1600 it’s tricky. Looking at the graphs: it’s not ideal. It’s on/ off all the time as it can’t modulate lower. Personally, I’d not be hap...

3 weeks ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@gary mine was “designed” to 45, bit system can’t get above 36. That bit was nonsense. from looking at your graphs of one day: you’ve got loads of ...

3 weeks ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@gary I get where you’re coming from. But I don’t think you’re undersized . You’re trying to cram in all the heat your house needs into certain peri...

3 weeks ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

Hi, I'm saying this from my experience, not as a heating expert: Your compressor is turned off for too long periods. You may think the UFH is at ...

3 weeks ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@gary how much UFH and how much rads are you? Whats your screed depth and pipe size?

3 weeks ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@jamespa yeah, i agree. The time required to fine tune a system is not economical. I absolutely understand why heat pump companies oversize, stat ...

3 weeks ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@jamespa yeah, I agreed. My son’s bedroom is on the ground floor with his sisters room above. I need to keep his room all night to over 20 so the fabr...

3 weeks ago
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