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Brendon Uys

@heacol

Contributor

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 ...

10 months ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Heat pump's integral circulator pump

@heatgeek 👍

10 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....

10 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...

10 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...

10 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...

10 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.

10 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...

10 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...

10 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...

10 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.

10 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.

10 months ago

Forum