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SUNandAIR
SUNandAIR
@sunandair
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Noble Member
Joined: Dec 30, 2022
Last seen: Oct 22, 2025
Profile Activity
Topics: 5 / Replies: 499
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Reply
RE: Low flow rate on Samsung Gen6 12KW heat pump

Hi Ian, I think you’re mistaking me for the OP...😉 But you’re right the tables produced seem to suit boiler installations rather than the lower fl...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Freeze Stat/Defrost setting….Ecodan in freezing conditions

Hi @Linz We have anti freeze valves on our pipes outside. These are usually factory set to bleed at 3degC. This also means we don’t have glycol in o...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low flow rate on Samsung Gen6 12KW heat pump

Correction : LWT40 should read DT17.5 eg: LWT40 = DT17.5 : 17kw X 0.255 = 4.3KWh

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low flow rate on Samsung Gen6 12KW heat pump

Thanks Derek. That clarifies a lot. It has been very useful to work out the DT ratings of radiators when operating at the lower flow temperatures of a...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low flow rate on Samsung Gen6 12KW heat pump

hi @derek-m I’ve been looking at your post and recognise what you’re saying and worked out the emitter output for all 7 rads at LWT 50. Can you conf...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low flow rate on Samsung Gen6 12KW heat pump

Great sketch also of the pipework @riponowl @iancalderbank has great knowledge of your brand of HP so I’ll keep my comments to pipes and rads. As ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low flow rate on Samsung Gen6 12KW heat pump

reposted for information.....

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low flow rate on Samsung Gen6 12KW heat pump

@iancalderbank Youve made a slight misquote: I never said “not recommended” however I did say I thought the flow sensor information was possibly neede...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low flow rate on Samsung Gen6 12KW heat pump

Suggest you check orientation limits of your flow sensor. Some makes and models shouldn’t be orientated with downward flow direction due to risk of ai...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASPH Sizing Confusion

all the signs are great at fixed flow temp setting however we don’t need heating yet. It’s too early to consider auto adaptive or WC as we have got ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASPH Sizing Confusion

It occurs to me there may or may not be differences in efficiencies between the two heating cycles. However I’m also thinking that there are other ben...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASPH Sizing Confusion

@derek-m Thanks for your comments Derek. As an aside,We have altered our system so we now have removed the LLH, removed the second pump and checked...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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