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Brendon Uys

@heacol

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Noble Member

Joined: Aug 6, 2021
Last seen: Oct 1, 2025

Topics: 3 / Replies: 411

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RE: Heat pump's integral circulator pump

@robs The flow rate is determined by the capacity of the unit. If you close a valve in the flow, the pump speeds up to try to match the desired fixed ...

8 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Heat pump's integral circulator pump

@heatgeek 👍

8 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Heat pump's integral circulator pump

@heatgeek No offense taken or inferred. The problem is, no-one actually knows but many claim to, and are disseminating unverified information as fact....

8 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Heat pump's integral circulator pump

@heatgeek You state "Beware disinformation on this forum", then you state "The theoretical power level was calculated " and finally "Vaillant Arotherm...

8 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Heat pump's integral circulator pump

@jamespa There is no consensus as manufacturers will not supply their test data, however, it is very much based on the design of the refrigerant circu...

8 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Heat pump's integral circulator pump

@jamespa, please do not make assumptions when you admit that you do not understand the topic. There are reasons for the 5 Deg Delta T but they are exc...

8 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: buffer/volumizer cupboard space eater, do i need one?

@sunandair a red herring, cycling is not the problen some make it out to be.

8 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: buffer/volumizer cupboard space eater, do i need one?

@sunandair That is what I would expect from a system with adiquate volume. The panasonic prevents the flow temperature dropping below 25 Deg C which i...

8 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: buffer/volumizer cupboard space eater, do i need one?

@sunandair You are correct, the volumisor on the flow will buffer the cold shock comming from the heat pump going to the radiators and the asociated d...

8 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Heat pump's integral circulator pump

@robl Your analysis is correct, for heating the most efficient Delta T across the condensor is in fact 5 Deg C and most manufacturers will reccomend t...

8 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Digital Showers and lower temperature hot water

@jamespa Install one of these on the main incommer.

8 months ago

Forum

Domestic Hot Water & Cylinders

RE: rad size and efficiency

@adamk Yes you can to that. I never use old radiators. If the customer insiste, I walk away, it is not worth it.

8 months ago

Forum