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RobS
@robs
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Joined: Oct 15, 2024
Last seen: Dec 7, 2025
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Topics: 0 / Replies: 60
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RE: Heat pump's integral circulator pump

Part L just requires thermostatic controls to "adapt" the heating output, so thermostatic on/off controls are sufficient. No need for variable flows o...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan Energy Monitoring Pack

That's really a question for the OpenEnergyMonitor folk (hello@openenergymonitor.zendesk.com) but if you just wanted to monitor the combined input/out...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan Energy Monitoring Pack

Mitsubishi's use a Sika flow meter and two thermistors (attached to the outside of the flow and return pipes) in the "plant room". From those the flow...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

@jamespa The 6kW is £4666 and 8kW £5295 on midsummer's, so no not much.

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

There is, the Mitsubishi R290 8kW has a 6kW inverter and a 2kW fixed in the outside unit. The 2kW is only used when more output than the 6kW can produ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump + Dynamic / Smart Tariffs - what is your approach?

Presumably the timer for timed DHW, that @jaket suggested, is just the standard feature of an Ecodan controller (and other heat pump controllers), so ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Solar for heating DHW

That's odd, you should be able to set 3 or 4 levels of quiet in the installer menu. Mitsubishis also have an Eco mode for DHW, you might want to tr...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Solar for heating DHW

@davidalgarve Much bigger heat pump than us but still a surprising amount of power, do you have it in Eco mode? Or use quiet mode? If it uses 3kW ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Solar for heating DHW

Most batteries are what is known as DC-coupled, which means that they use the solar inverter to convert their DC voltage to AC used in your house. So ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan with FTC7 controller DHW schedule

Cosy has the 3 hours of peak rate and the day rate is appropriately 1.5p per hour more - which is appropriately equivalent to another hour and a half ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan with FTC7 controller DHW schedule

142L is not very big but if you don't use much DHW then it's worth seeing if only one DHW reheat a day works. Do you have a battery with your solar...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan with FTC7 controller DHW schedule

We also have a FTC7 and a newer R290 Mitsubishi heat pump. There are prohibits for heating and DHW, to schedule the DHW you want to prohibit the DHW f...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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