Electrical controls for domestic ch/dhw

[Tim Lamb]

Well the boiler got installed and eventually the electrician returned to wire up the system.

Without much thought or any advice, I had opted for W plan. The circuit diagram looked simple enough:-(

Using heatmiser manifold controls is not at all simple. Basically they don't tell you what is inside the box only a dumbed down version of what to connect to which terminal.

After several hours of try this, try that, the electrician claimed to have a working set up and went home.

I have not yet had an opportunity to check:-(

Anyone done this? Or pointers to some suggested arrangements?

[spuorgelgoog]

Well it is only 6 connections and earth. Even a plumber should be able to join that up.

Owain

[Tim Lamb]

Indeed.

Sadly underfloor systems tend to have individual roomstats and further complicated by splitting the manifolds upstairs/downstairs.

Boiler overrun provision also needs checking. I don't know if this is internal to the Viessmann boiler in which case the boiler pump could circulate through the output/return loop (about 20m of 28mm insulated piping)

I'll have a play this morning and report back:-)