RF Room Stat wiring

[Sid Viscous]

Electrics not my strong point, got a Siemens rf room stat to wire into this:



Looks decidedly home made!

Where the bloomin' heck do I start?

Reciever req's permenant L & N ( the easy bit! ) LX=common, L1=switched live.

All ideas welcome

 

[jtsplumbing]

, you need to find the wire that is live when calling for heating, remove this from block and connect to reciver, then back from reciver to were the wire went into the block, so that you are making a loop through the reciver hope this makes sense.

 

[lame plumber]

get it right or you may need a new pcb if you get it wrong!!!!!!!!

 

[Sid Viscous]

In the fuse spur next to controller there's a live feed from the valve to the boiler, joined on a piece of choc block. Do you reckon I'd get away with looping that thru LX & L1?
Makes sense to me, but then I do be a bit daft!!

 

[jtsplumbing]

Click on timer for heating / see whitch wire is then live in J/box that is then switchd live from timer, pull out this wire put on choc block, then extendd this wire into receiver, then from other connection in reciver run this back to the connection that you took the first wire from so that you make a loop P/Live -N - E needs to be from spur.

 

[AlexGas]

Here's a handy wiring Honeywell guide for you:

http://www.honeywelluk.com/documents/Literature/pdf/Wiring%20Guide.pdf

 

[Sid Viscous]

Thought of a possible issue with connecting via the switched live, wouldn't that hold off the boiler when it's calling for DHW only?
Looks like I'm gonna have to connect at the valve...:ack2:

 

[MR RIGSBY]

Put a link between l and lx(common) and run a switched live from l1 to the white wire on the motorised valve.

 

[jtsplumbing]

No you are only brakeing into the heating SL not the hot water, timer calls for heat for heating, sends signel to room stat this then sends signel back to wireing center, remember that SL for hot and SL for heating go to differant terminals in wireing center.

 

[Sid Viscous]

It's on & working!! Thanks for the input guys, especially jts :biggrin5: