Last seen: Jul 17, 2025
OK... so the point being made in the manual is that an 'ordinary' domestic central heating pump gets operated with a PWM signal, provided that it is c...
I'm pretty sure that @mike-h 's Pump-2 is a UPS15-20 (or -30) which is the type most commonly used for domestic radiator circuits. It's likely to have...
Mike H's set-up (details to follow pending any additional photos) And here's the relevant installation diagram from the Grundfos manual for Pump-2...
I'm adding the annotations for everyone else... ... especially those who will arrive at across this topic in the months and years to come 😉 Annot...
Let's label a few bits:
Salamander make pumps for pressurised showers. Some have automatic pressure regularisation, which enables them to deliver hot and cold evenly when dra...
There's a measure of truth in this. The one thing that they didn't do was to create a public survey/consultation from which to learn 'best practice'. ...
I'd suggest you order component parts from the right sort of supplier. If you know what's the part you require, then try BES. If you're unsure, th...
The better option is for them to fit control systems which can be monitored remotely. That enables them to check temperatures, flow-rates and efficien...
For interest and comparison, here's a photo inside the connection cabinet of a ground-mounted substation transformer: The centre columns between F...
Yes, I'd be happy with what you're attempting using the NH type 00 fuses. I've just ordered some fuses made by Miro to try. They're type RG4a, with ...
The fact that it's storage isn't the salient point. G98, G99 and G100 are rules relating to devices which export to the grid. If your storage batt...
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Don't do much digging around.That's best left to the pr...
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Hi all, I was wondering if anyone had an idea of how th...
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RE: EBAC re-entering the ASHP market in 2023
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This particular example is one of the worst I have seen...
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I wonder if it has some kind of pressure transducer to ...
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