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JamesPa
JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 10, 2026
Topics: 27 / Replies: 5220
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RE: Radiator sizing sanity check

Thanks for the update. As you say you are now piggy in the middle. Its sometimes said that legal cases are won by those with the best filing syste...

7 months ago
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RE: Recommended home battery inverters + regulatory matters - help requested

@batpred, @transparent thanks   Since the inverter isn't between the mains and the CU, does this need an (automatic?) cut out device that ...

7 months ago
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RE: Recommended home battery inverters + regulatory matters - help requested

Thanks all for the help, this seems to be nearly as complex as heating!   My current thought process, and the remaining questions, are this: ...

7 months ago
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RE: Advice for a novice on Mitsubishi Ecodan 6kW

I hadn't spotted that there were two pumps in the UFH (well spotted!) but I had recognised the risk that the upstairs rads weren't getting enough wate...

7 months ago
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RE: Setback savings - fact or fiction?

Never assume it makes an ass of u and me! You need the return temp to be lower than about 55 for a boiler to condense. If you start of with a FT of ...

7 months ago
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RE: New Mitsubishi Ecodan 11.2kW installation - L9 errors and maybe more

Before I answer your specific questions just one more thing to highlight. The upstairs rads may well be big enough, but because your heatmiser is (pr...

7 months ago
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RE: Setback savings - fact or fiction?

The costs, if any, are not that great - see my calculation above and comment about (non-) condensing boilers. When I abandoned setback and turned my...

7 months ago
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RE: Setback savings - fact or fiction?

By 'no recovery penalty' I mean no efficiency penalty because it has to work harder to supply the extra energy needed to replace the energy lost durin...

7 months ago
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RE: Setback savings - fact or fiction?

This topic will run and run for sure The misunderstanding many suffer from (and the controls industry almost actively encourage this misunderstandin...

7 months ago
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RE: Recommended home battery inverters + regulatory matters - help requested

Only the manual The commissioning documents state which inverter model it is.

7 months ago
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RE: New Mitsubishi Ecodan 11.2kW installation - L9 errors and maybe more

Your installer is probably right. The L9 error means low flow, and if the zones aren't open this will be the reason. You cant fix the error without ...

7 months ago
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RE: Rodents! A word of warning for heat pump owners

Im sure there are plenty of gags to be had linking MCS and rodents of various types!  

7 months ago
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