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RobS
@robs
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Estimable Member
Joined: Oct 15, 2024
Last seen: Dec 6, 2025
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Topics: 0 / Replies: 60
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RE: What happens when the outside temperature exceeds the upper WC point?

Mitsubishi has a separate setting, like Samsung, to turn the heat pump off above an outside temperature. And turn the heat pump on below an outside te...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

It's from:/p> Suggest you use the menu (top right) and download the PDF - it's a big document as it has all of Mitsubishi's air to water heat pumps....

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

A few comments that might be helpful. As James mentioned, usually the biggest source of over estimating heat loss is the ventilation rate (air chan...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Anyone able to provide some feedback before I make my finale decision? Samsung vs Baxi vs Vaillant

Unfortunately for your argument the best performing Daikin on heatpumpmonitor is the one owned by matt-drummer and from how he explained his control s...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Oversized Daikin 9kw

There have been several people on the OpenEnergyMonitor forums who have persuaded Octopus to replace their 9kW or 11kW Daikin with a smaller 6kW or 8k...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump's integral circulator pump

@heatgeek Sorry if I miss attributed that. Yes, the same CH flow rate is maintained at all OATs. Here's the same heat pump running at lower OATs: ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump's integral circulator pump

The statement was "not a single one of the top performing heat pumps on heatpumpmonitor.org have a constant dT of 8C. At warmer OATs they mostly run w...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump's integral circulator pump

I suspect you know it's not, but to reinforce that, not a single one of the top performing heat pumps (of the couple of hundred with certified heat an...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: efficiency factor of heat pump brands

Better than nothing from losing it as waste heat though.

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: efficiency factor of heat pump brands

Rotary compressors usually have the electric motor in the refrigerant, as the refrigerant is used to cool the motor. Therefore the waste heat is recla...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump's integral circulator pump

I'm not and as I wrote the logic of Part L is a bit questionable in places. The regulations just say they must be fitted, not that they must be used. ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump's integral circulator pump

The logic of Part L is a bit questionable in places! But why do you think most heat pumps can't handle this? Or more to the point, why most water pump...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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