Help on wiring please

[drbob]

Hello, I wonder if anyone can help me please regarding the wiring of my central heating system ? I have a Ideal Classic 12he running just radiators, no hot water. There is a programmable room thermostat, no separate timer and a grundfoss water pump.
I cant find the booklet for the boiler and I wondered if it would be wired by simply connecting all three of these in series from the power supply ?
The room thermostat was originally wired with just two core flex into the old wiring box, the boiler and pump both had a three core flex from them into the wiring box. I did originally write down all the connections that were made in the wiring box, so that after I did the work I needed to do, I could reconnect them easily but I can't for the life of me find them anywhere !
If anybody could help I would be grateful.
Thanks - Bob

 

[drbob]

Oops, I forgot to say that the room thermostat is a drayton digistat3 sorry

 

[scatmanjohn]

http://www.idealboilers.com/docs/pdf/classic_he_manual.pdf

 

[drbob]

http://www.idealboilers.com/docs/pdf/classic_he_manual.pdf

Thanks for that John but none of the diagrams in there are for a system where only Central Heating is run by the boiler. Would this be OK below to wire it up as ?

I apologise for the drawing but that was never a strong point.

 

[seco services]

only cause the diagrams are using motorised valves for hw/ch.
as you say your live on common and switch live to pump/boiler on call for heat, which is 3 i think on the stat you have.

 

[drbob]

only cause the diagrams are using motorised valves for hw/ch.
as you say your live on common and switch live to pump/boiler on call for heat, which is 3 i think on the stat you have.

Thankyou very much secoservices. I did think that was the way to wire it up but I wasn't sure whether the stat would be allowed to have mains power running through it or whether there was another way of it signalling the boiler to start everything up when heat ws called for.

Thanks very much again. Bob

 

[seco services]

let us know if its ok.

 

[WDIK]

you need your boiler installation manual to see what kind of input it requires,
the boiler may need permanent feed and want to control the pump its self in respect to heat diss mode
the stat maybe a voltfree input. read your manual

 

[drbob]

let us know if its ok.

It seems to work fine now secoservices, thanks for your help. When the stat calls for heat, the boiler starts to spark up and the pump runs

Sorry for the late reply.

 

[seco services]