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	RE: Mitsubishi cycling while on chilled water output By downfield, 3 weeks ago Forum Air Source Heat Pumps (ASHPs)
	We have the equivalent of 8x Strada rads which absorb around 650W each on max fan speed at a room temp of 27C with flow @16C and return @18C according to the specification. We also have 3x 1800mm tren...
	RE: Mitsubishi cycling while on chilled water output By ASHP-BOBBA, 3 weeks ago Forum Air Source Heat Pumps (ASHPs)
	@downfield Ah, sorry I didn't realise you had fan assisted convected radiators, I read the data sheet and see that these are non condensing so the flow needs to stay slightly higher in cooling but it ...
	RE: Commencing on an ASHP Installation Process By JamesPa, 3 weeks ago Forum Air Source Heat Pumps (ASHPs)
	I'm fairness to Havenwise the logic of dhw heating is tricky. Many people including me have their dhw deliberately set to reheat once per day only. In this case the hysteresis acts only to stop rehe...
	RE: Mitsubishi cycling while on chilled water output By downfield, 3 weeks ago Forum Air Source Heat Pumps (ASHPs)
	Here's a link to the Strada brochure. You'll see that the rads are designed to perform both heating and cooling using the same connections. Because the emitter is essentially horizontal connections ...
	RE: Commencing on an ASHP Installation Process By Sheriff Fatman, 3 weeks ago Forum Air Source Heat Pumps (ASHPs)
	A few initial thoughts on Havenwise, from a new end-user perspective: Signing up to Havenwise was something I'd always had in mind once the system was installed. Compared to the hard-installed 3rd pa...
	RE: Mitsubishi cycling while on chilled water output By ASHP-BOBBA, 3 weeks ago Forum Air Source Heat Pumps (ASHPs)
	Your emitters will be less than 50% efficient, radiators are emitters not absorbers, cooling is absorbing heat not emitting cooling in reverse (so to speak) the surface of the rad becomes a chilled su...
	RE: Mitsubishi cycling while on chilled water output By IaAck, 3 weeks ago Forum Air Source Heat Pumps (ASHPs)
	@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 differently if you plan to use it for cooling (in a...
	RE: Mitsubishi cycling while on chilled water output By IaAck, 3 weeks ago Forum Air Source Heat Pumps (ASHPs)
	@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. The height of the radiator typ. 45 cm so inlet is ap...
	RE: Mitsubishi cycling while on chilled water output By downfield, 3 weeks ago Forum Air Source Heat Pumps (ASHPs)
	@iaack they have a finned emitter at the bottom a bit like a car radiator so the water runs horizontally through those. Most of the rad is empty but its purpose is to provide a chimney effect so they ...
	RE: Mitsubishi cycling while on chilled water output By IaAck, 3 weeks ago Forum Air Source Heat Pumps (ASHPs)
	@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 bottom of the radiator which i assume helps with h...
	RE: Mitsubishi cycling while on chilled water output By JamesPa, 3 weeks ago Forum Air Source Heat Pumps (ASHPs)
	Yes, but hopefully only for a few days of the year. If you wanted cooling more frequently I would be concerned about the effect of the cycling on compressor lifetime in which case you might want to c...