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Uk_pete_2000
@uk_pete_2000
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Estimable Member
Joined: Nov 11, 2024
Last seen: Apr 4, 2025
Profile Activity
Topics: 1 / Replies: 72
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Reply
RE: Is the Grant controller a thermostat?

Add me to that list

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Is the Grant controller a thermostat?

The system should not be seeing the 23C, in fact it does not see / use any internal temps any more, it is just showing the current temp. The reading o...

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

@grantmethestrength Be interest to know how you are getting on etc, as we have a Grant R32 13kw system and looking to use modbus to get greater cont...

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

Hello @stuartornum I enjoyed reading your points on WC and agree, they are not worth it. There is no way of ever setting them up correctly and ...

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

You can only get 4kw out of the inverter, regardless of where it comes from. So you are producing 4.6kwh from the panels, the inverter will put 4kwh...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Not a good January? My heat pump used 840 KWh of electricity

we have a very well 400mm Insulated house, etc Passive standard

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: 4 port buffer tank connections

The heat pump only turns on when we request heat. Never really tested what happens if we leave if off for 24hrs and its below 4°. I think even our hou...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: 4 port buffer tank connections

That's how we start, 4 temps on the 4 ports. It showed we had a imbalance of 5° across the top, which I wanted to reduce having looked at the various ...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: 4 port buffer tank connections

Grant have much to same and can even be placed outside, next to the HP. Yes when defrosting the heat has to come from some where and by changing to ...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: 4 port buffer tank connections

I wish they would. Ours made out we needed a 13kw system. More because of the size of the house, then the makeup of it. Seems back then it couldn't co...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: 4 port buffer tank connections

There is plenty of difference in my case. A 4 pipe 300l buffer, we have to get the balance down below to say 2° flow temp across the top. In order ...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Not a good January? My heat pump used 840 KWh of electricity

Around 370kwh for 2024 to around 490kwh 2025. Did try running it 24hrs over the 1st week of Jan, but decided it was of no benefit, so won't be doing...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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