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Brendon Uys
@heacol
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Noble Member
Joined: Aug 6, 2021
Last seen: Jul 27, 2025
Profile Activity
Topics: 3 / Replies: 404
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Reply
RE: ASHP and heating issues in new build house

Firstly, lets look at the heat pump, this unit, accrding to the doccumentation Mr Google found fo me, it will supply 11 Kw down to -7, if your heat lo...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Say hello and introduce yourself

@adamk You defernatly do not need a buffer and possibly a volumisor depending on how many radiators you have open loop and the unit you choose. Yes, y...

5 months ago
Forum
Introductions, Forum Rules & Updates
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RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

@jamespa "Whether anyone would be prepared to pay the rates that they would demand is of course another matter!", they are not, we have sorted a lot o...

6 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

@jamespa (Im presumeing when you say pumps in parallel you also include in series - as here); you are correct and I have corrected my post. Mismatched...

6 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

@jamespa Pumps in series are not a problem, the flow rate on the pump is approximately the same and the head is about 70% more (not double). @alfapa...

6 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: 4 port buffer tank connections

I don't believe the installation of a buffer tank, complies with the building regulations.

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: 4 port buffer tank connections

@uk_pete_2000 I do not think there is 1 manufacturer that insists on a buffer, what they do insist on is adequate open flow and system volume. Flow sh...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 4 port buffer tank connections

@jamespa You are again correct, you can balance a buffer tank, just like you can go to the moon 🤣

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

@toodles I am totally against any form of system separation in a domestic environment and most commercial environments. I have installations with over...

6 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: 4 port buffer tank connections

@jamespa correct, but why make things complicated when a system without a buffer works so well? In my experience, simplicity is always the best option...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 4 port buffer tank connections

@transparent You are correct on both accounts, the picture is correct, and it is exceptionally difficult to balance a buffer in normal circumstances.

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

I do not know where your consensus comes from, certainly not from me. Any variation of flow on either side of the buffer tank WILL cause distortion an...

6 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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