Recent content by columb

Hi, Mains gas. Cheers Chris

Hello, Was there any research done to what's the most optimal heating schedule for a hot water cylinder? Is it best to keep it on for few hours a day, or keep it on at all times or any other approach is recommend? What if I go out for a week? Switch it off? How about long weekend? 2 weeks...

Thanks Jackthom. That's clear. I was wondering if there is a way to have Nest work out most optimal water heating schedule with some cleaver algorithms rather than just "time it"... With room stats Nest can tell how long it takes to heat up zone so it knows for how long to keep "call for heat"...

Hi Jackthom, Yes, that's correct - they are 2-port valves and there are 3 of them. I was under false impression that "satisfied" means that water is hot enough... Ah, silly me. On the other hand - how NEST knows that water is hot enough? Or does Nest doesn't care and just calls for heat for...

Hello, I'm going to replace my ESI controls and thermostats with 2 NESTS. I have 2-zone + HW GCH. I think I've worked everything out and I'm confident that I can get this done myself. On the pictures attached you can see main board and zoom on the wires that I can reuse. They are upside down...