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bontwoody
bontwoody
@bontwoody
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Noble Member
Joined: Mar 5, 2022
Last seen: Aug 20, 2025
Profile Activity
Topics: 29 / Replies: 808
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RE: Mixing of pipework/components' with different internal dimensions - theory vs reality/practical approach

@rhh2348 I just mean that from the 22mm copper or plastic pipe spine, each radiator have 15mm plastic down to it. I use John Guest plastic pipe but...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mixing of pipework/components' with different internal dimensions - theory vs reality/practical approach

@rhh2348 I find this an interesting question as I did a similar thing after reading John Cantors site. I have 28mm to my 5kW heat pump which then r...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is it crucial to get flow temperatures with heat pumps right?

@alfapat the flow temperatures in and out of the buffer tank aren’t really something you can do anything about. They just indicate how much efficiency...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is it crucial to get flow temperatures with heat pumps right?

@alfapat There is no such thing as a dumb question, just a dumb answer 🙂

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is it crucial to get flow temperatures with heat pumps right?

@alfapat I think modern TRVs can be fitted on either side. The lock shield will restrict flow whichever side it is sited

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is it crucial to get flow temperatures with heat pumps right?

@alfapat Remember Pat, as the outside temperature varies, so does your flow temperature. If you are not getting to room temperature today when its war...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is it crucial to get flow temperatures with heat pumps right?

@alfapat yes if you can get the maximum flow temp to 46C from 50C that will be a result. you will find that each adjustment will affect every other...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is it crucial to get flow temperatures with heat pumps right?

@alfapat that is what water law is for Pat. It automatically adjusts the flow temperature to take into account the OAT. Once you have the rad valves r...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Reusing existing radiators

@chandykris just give them a good wash out before fitting them back 😁

7 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Is this normal behaviour for my samsung ashp

@wawyed Thats the only thing I could think of that might account for the difference. It looks odd but I doubt its affecting COP much

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Reusing existing radiators

@chandykris Yes, I did that, just bought two big radiators and shifted the others into different rooms. No problems.

7 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Is this normal behaviour for my samsung ashp

@wawyed Mine isnt doing that, is your water pump PWM controlled?

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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