Hive - Should I need to do HW & CH, or should CH do nothing??

[Chris M]

It sounds like it's wired up as a gravity system, hot water fires the boiler and heating operates a pump.

I'd say you'll need a decent plumber and electrician to work out what bodgery has been done and how to fix it.

Booooo feared that might be the case..

In any particular order or find two guys and get them both to rock up at the same time?

Would pics on the wiring near the cylinder help at all or too much to remotely diagnose?

 

[diditrain]

No harm in posting some more pics, but yeah, you really need someone out to make a professional diagnosis.

 

[Leesparkykent]

What you have there is a thermal store. One pump operates the flow from the boiler and the other pump is for the heating. A thermal store like you have should ideally maintain its temperature 24/7. It works opposite to the way you think it would as the water in the cylinder heats the coil that the water passes through so you have mains pressure hot water.

 

[Leesparkykent]

The hot water function on the timer/hive isn't actually timing the hot water its timing the boiler to heat the thermal store.