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JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Jul 18, 2025
Topics: 16 / Replies: 2628
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RE: buffer/volumizer cupboard space eater, do i need one?

I agree with @toodles. By way of a direct answer to your question, so you have a good reason to reject them and look elsewhere. I adopted the appro...

5 months ago
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RE: Heat pump's integral circulator pump

It provides extra system volume which is useful for defrost but may well not be necessary. Have you any idea what volume of water you have in your se...

5 months ago
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RE: Ecodan consuming 100kwh per day in new build!!!

@anca1808 Just to give you some comfort and set expectations, my Vaillant heat pump is working out 13% cheaper than gas on a like for like basis, over...

5 months ago
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RE: Share Your Experiences with Heat Pump Manufacturer Support

Maintain the LWT by adjusting its heat output (if the required power is within its modulation capabilities) This is surely OK. Its adjusting...

5 months ago
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RE: Share Your Experiences with Heat Pump Manufacturer Support

Im sorry but I think you are getting confused. The statement above is either not correct or there is something wrong with your system that needs to b...

5 months ago
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RE: Fujitsu Waterstage WOYG160LJL Air Source Heat Pump

I cant remember what your WC curve showed, but it should follow that. This is only a few degrees change given that OAT doesnt vary that much Wit...

5 months ago
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RE: Share Your Experiences with Heat Pump Manufacturer Support

OK I found the original post about 4.88kW and I also agree with @editor above. Firstly It wont help to operate with the thermostat as opposed to on ...

5 months ago
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RE: Share Your Experiences with Heat Pump Manufacturer Support

Im sorry to hear about your troubles but its definitely good that the buffer and secondary pump has been removed. You are on the right path, keep the...

5 months ago
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RE: Is your gut better than Math

The Mitsubishi R29O pump has 2 compressors to achieve exactly that. Sofaik the only domestic one so far to do this

5 months ago
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RE: Ecodan consuming 100kwh per day in new build!!!

@anca1808 Lots of ideas above about what could be causing your issues. Nobody, including me, can be definitive because we don't have your system in...

5 months ago
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RE: Compute heat loss from energy used

I concur in principle with @old_scientist however there are some points to consider 1. your house has a heat input other than the heating, due to wa...

5 months ago
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