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Toodles
Toodles
@toodles
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Illustrious Member
Joined: Oct 2, 2022
Last seen: Aug 6, 2025
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Topics: 82 / Replies: 1942
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RE: Is it crucial to get flow temperatures with heat pumps right?

@alfapat One would expect the flow to be into the emitter from the TRV but, my installers informed me that the modern valve bodies are so made that di...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@lucia I have not attempted to tot up my volume of water but 10 radiators plus a dual fuel towel rail seem to keep the defrosts to perhaps 90 minutes ...

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

@alfapat The radiator / emitter that takes the longest to heat up will be the one LSV that remains fully open and all others will then end up somewher...

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

@alfapat Start by throttling down the first to heat up, then the next to heat up…. ALL the emitters / radiators should be regarded as components of on...

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

@alfapat I would think starting froma common 1.5 turns open would be a good start - unless there is an emitter at the end of the run that might suffer...

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

And as a post script: When you commence the balancing exercise, you will be running around the radiators checking which is heating up the quickest (i....

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

@alfapat Adjusting an LSV to provide a temperature setting is probably the start of a road to frustration and madness; as the name suggests, it is to ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Cost to have Gas removed

@transparent We had one chappie from SGN call at the door (just checking his paperwork and that we weren’t half inching any gas I think), his opening ...

7 months ago
Forum
Your Home
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RE: R290 install location and future of R32

@sunandair I think this may be what is referred to as a ‘split unit’; the heat pump main unit is outside and there is a ‘hydrobox’ installed inside. I...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Cost to have Gas removed

@robl Our meter box was falling apart and long stopped being a locked flap front closing protective enclosure. By the time SGN came to see the work, t...

7 months ago
Forum
Your Home
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RE: Hitachi Yutaki M efficient operation

@iraknic Please note, I don’t have any experience at all (diddly squat) of UFH plumbing but if a circuit has both send and return valves, it is probab...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: 8.2kW GivEnergy

@rosst With 14 kWp. of solar, if your battery capacity is high enough, perhaps you might wish to consider a heat pump as the PV should go some way tow...

7 months ago
Forum
Energy Storage
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