Wiring a Salus UFH wiring centre RF

[Lee Edwards]

Hi all. I hope you are well.

I have just installed a underfloor heating manifold with the above controls.mplease see image attached. This is attached to a combi where I have installed 2 zone valves so basically an S plan. Now looking at the wiring centre schematic, it does not go from the usual switch live on the brown to orange and to the boiler. I cannot quite get me head around the wiring set up. So do I join the pump to the grey, neutral and green on the zone valve and then grey to pump on fr centre. Then run a cable from boiler in front centre to stat locations in the boiler and not use the switch live of the zone valve.

Thanks all.

 

[Lee Edwards]

Ahh gutted. Thought I would get one reply. Stem usually answers my questions but no such luck. Could anyone point me in the correct direction? I was typed into Google the issue I have and a thread came up on this site with someone who was asking the same questions as me. I accidentally closed the browser and could not find it again. Been going back through the posts for hours but no luck. Stem, the old Faithfull with these wiring issues was there. Think it was 2019. Any help?

Thank you

 

[muggles]

You shouldn't need a zone valve with this, but now you have one you may as well use the switch live out from the boiler connection to switch the brown on the zone valve. The UFH manifold pump goes to the pump connections as you've correctly identified.

 

[Lee Edwards]

Thanks for the reply. Appreciate the advice. So I can take the pump supply from ufh manifold to the LNE in my wiring centre, send a live from the pump in my wiring centre to the ufh wiring centre and then use the a supply from boiler 2 in ufh wiring centre to switch live on valve (brown wire) in my wiring centre. Is it also ok to take power from the wiring centre to power on the ufh wiring centre? Cannot see any where where it mentions this.

Thank you

 

[Lee Edwards]

You shouldn't need a zone valve with this, but now you have one you may as well use the switch live out from the boiler connection to switch the brown on the zone valve. The UFH manifold pump goes to the pump connections as you've correctly identified.

Just got around to thinking about this. Not sure if you can understand my sketch or not as it is a bit like spaghetti junction. Like a lot of heating system wiring done in a single back box.

 

[muggles]

Your zone valve only seems to have 4 wires, should be 5. Brown core is connected to the wiring centre's boiler SL terminal, orange goes to the boiler

 

[Lee Edwards]

Doh! Missed the orange from the valve.

That make sense?

 

[Lee Edwards]

Hey, I see most of the other ufh wiring centres are able to take a second zone valve bit I am thinking this one doesn't? Do you think the links that are shower from power to pump 2 and boiler 1 are already there?

Think I must be over thinking this...

 

[muggles]

Doh! Missed the orange from the valve.

That make sense?

Err, no. The orange from the zone valve needs to go to the boiler SL. You've created a closed loop there..

 

[Lee Edwards]

Totally understand. Thanks for your patience Muggles. Think I can actually take the brown from the valve with the live to the pump to pump connection as in the picture and then switch live from boiler 1 connection to switch live in wiring centre. No need for grey and orange wires from the valve.