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IaAck
@iaack
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Joined: Mar 8, 2023
Last seen: Jul 22, 2026
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Topics: 0 / Replies: 60
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RE: Mitsubishi cycling while on chilled water output

@downfield I think the cooling capacity ratings for you fan coils are misleading for your application (I am assuming the units are mounted just above ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mitsubishi cycling while on chilled water output

@downfield I thought I'd quiz ChatGPT about this and answer is as follows (specifically point 3): Yes, you should plumb a domestic fan coil radiator...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mitsubishi cycling while on chilled water output

@downfield With a car radiator the hot water from the engine is piped to the top of the radiator and the cooled water is drawn off from the bottom. Th...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mitsubishi cycling while on chilled water output

@downfield I don't know how your fan coils are plumbed in but all the conventional radiators I've come across are connected to flow and return at the ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: All your heat pump problems solved by -- a plate heat exchanger in a plinth!

@allyfish Is this not how district heating systems work. One heat source and multiple heat exchangers?

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: All your heat pump problems solved by -- a plate heat exchanger in a plinth!

Some context to the argument if you are a Housing Association maybe? The government’s Boiler Upgrade Scheme (BUS) currently offers homeowners, p...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

@bobtskutter In order to calculate the energy required to defrost the evaporator you are going to need some additional info including evaporator mass,...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

@cathoderay To answer your question regarding this The inverter pcb contains a VFD (variable frequency drive) circuit that drives the 3 phase compre...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Double heat pump for DHW?

Waste heat recovery could be an option? Are we talking about a single shower cubicle ike this:- "5 showers in a row" and this springs to mind!

2 years ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

Are you saying then + or - 10% or + or - 5% I note that the tolerance for ashp ratings (EN14511) are: Tested cooling and heating capacity ≥ 0,88...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

How close to the true heat loss figure do we need? Is it actual heat loss + or - 20%, ....?or more likely heat loss - 0 to +40% Or heat los...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung Gen 6 outdoor unit - what is the colour code?

Possibly RAL7035? Try matching using the attached colour chart

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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