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JamesPa
JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 19, 2026
Topics: 27 / Replies: 5268
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RE: Hitachi Yutaki M efficient operation

@iraknic the buffer tank or pipe losses. It sounds like a classic case of excess mixing in the tank. That said not sure how accurate the or guns are...

2 years ago
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RE: ASHP and how it should run and potential kw consumption?

@jeegnesh wow . exactly which rooms are too cold if you run at the 'downstairs' flow temperature.

2 years ago
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RE: Totally bewildered with my ECO4 heat pump installation

The Vaillant WC interface is actually much more user friendly than most. You can do it without your installer (which doesnt excuse him not helping). ...

2 years ago
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RE: ASHP and how it should run and potential kw consumption?

I was saying The latter not the former - pick a heat curve suited for upstairs, but see my final comment below before and please respond you do anythi...

2 years ago
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RE: ASHP and how it should run and potential kw consumption?

Its a complex system, probably over complex to be sensible and certainly too complex to work out what might happen with any certainty if you change op...

2 years ago
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RE: ASHP and how it should run and potential kw consumption?

You could be right. What do you know of the design/history of the heating system (not the heat pump, the emitter system). Its quite bizarre that the...

2 years ago
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RE: How much radiator capacity do I need for an air source heat pump?

Agreed, Put another way it may sometimes be better to heat the house to a slightly higher temperature to avoid cycling. I can easily believe that is...

2 years ago
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RE: ASHP and how it should run and potential kw consumption?

Im not surprised, two differnt heat curves will likely confuse it. I have only 1 and have turned off all autoadaption or room temp compensation and e...

2 years ago
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RE: Totally bewildered with my ECO4 heat pump installation

I can possibly help. First some explanations, then a comment then some more info needed from @jaynieq Explanations: kWh is energy, W is power...

2 years ago
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RE: How much radiator capacity do I need for an air source heat pump?

Just for clarity my numbers, collected together, are: Design OAT: -2 Design FT @ -2: 45 Measured house loss @-2: 7kW Rated output of '7kW' Vail...

2 years ago
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RE: ASHP and how it should run and potential kw consumption?

I think you have a Vaillant, in which case (on the sensocomfort) its settings - installer level - noise reduction mode. I run mine in noise reductio...

2 years ago
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