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bontwoody
bontwoody
@bontwoody
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Noble Member
Joined: Mar 5, 2022
Last seen: Aug 31, 2026
Profile Activity
Topics: 39 / Replies: 1019
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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...

2 years 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...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Reusing existing radiators

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

2 years 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

2 years 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.

2 years 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?

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

@johnnyb Is that different to what Toodles has shown in the response above?

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

@toodles Thanks, thats actually more than I expected so quite useful.

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

@alfapat So this is the lockshield valve Sometimes they have knurled knobs on which can be used to adjust them, but if not then just use a smal...

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

@alfapat Sorry, I didnt see the temperature readings. So you are losing about 4C by using the buffer which I think is about an 8% loss in efficiency. ...

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

@alfapat some installers try and set up the heat pump to run like a conventional boiler with TRVs. It’s an incredibly expensive way of doing it but ea...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Battery sizing - How low can you go!

Yes thats right, although I dont totally use all my battery capacity and its closer to 4.5 kWh charging rather than 5kWh per night I think what Im s...

2 years ago
Forum
Energy Storage
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