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Alec Morrow
@alec-morrow
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Reputable Member
Joined: Jan 7, 2022
Last seen: Sep 4, 2025
Profile Activity
Topics: 8 / Replies: 208
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Reply
RE: Vaillant system tweaking.

assuming everything is vaillant, (you have used obscure nomenclature) the the rads should be compensated not fixed. I suspect you are in instal...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Controlling dumb thermostat in a smart way?

@luke pumps use less than 100w, many as low as 5w..they all are speed variable, so look on the pumps. in the first best world you wouldn’...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Slow to heat room

@hughf the truth is we need a whole new trade called to support the technology.. Why Liz Truss and Kwartang don’t jump on that I have no idea!

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Slow to heat room

@hughf all this exists on viessmann controllers and vaillant, have a look at the installation manuals. Peak load pricing is not unique to the U.K., it...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Slow to heat room

@derek-m vaillant controls already are self adapting…probably mitsubishi and viessmann… Just because they aren’t in the U.K. doesn’t mean they d...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Slow to heat room

it’s all designed to be done on the internet remotely..bound up with a service fee for maintenance and supervision.. extending service life to 20-25 y...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Slow to heat room

@squonk that is indeed the case, but the business model pursued in the U.K. doesn’t encourage that.. There are huge interests in keep installers...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Slow to heat room

Compensation controls are as sophisticated as they can be as they load match, and cannot be improved, other than the interface. Whats lacking is...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Slow to heat room

Just keep teasing the curve up... you can also just raise the target room temperature, that lifts the curve. With "none" selected in room control it ...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Slow to heat room

@squonk going up is as good as going down. make sure you have room control set to on, or extended...other wise it will just work around the outdoor te...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Slow to heat room

@hughf Is Homely relay switching..or does it speak multiple bus languages?

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Slow to heat room

Set all on off controls to maximum, and raise the heating curve to something more appropriate say 1.4, they come out if the factory at about 0.6 if ...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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