Wiring for boiler/room stat/programmer ...... seriously confused! HELP

[robovanbasten]

Hi all,

I'm trying to wire in a programmer (Drayton LP111 [single channel]) and room stat (Honeywell) to my Worcester Bosch Highflow 400 OF. Now for an experienced heating engineer I guess that's something they could do in there sleep! But I'm struggling. Attached is my proposed wiring diagram, does this look right? All I really want is for my programmer to switch the heating on and off at the programmed times.
Kind Regards,
Chris

 

[Puddle]

Would be nice to know model of room honeywell thermostat with terminal no.s and terminal id's you are linking to on high flow but in theory wiring seems ok

Make sure all is 3amp fused only,can save a lot of grief

imho

 

[diamondgas]

Does the boiler currently have an integral programmer? How has it been timed before?

 

[robovanbasten]

Not sure what the room stat model is, but I know it's old. Terminals 2, 1 & 3 are used (see pic).

 

[diamondgas]

Is this stat the only control you currently have for the heating?

 

[stevetheplumber]

Im not familiar with this boiler but a quick look at the instal guide shows there are two plugs in the boiler one to connect room stat and one to connect external time clock it might be an idea to check these
what puzzles me is it shows hot water channel for clock i thought it was a combi? Does it have storage instal docs are available from link on top of this sub forum

 

[diamondgas]

Does it have storage

Hi Steve , yeh they have a priority heatbank that can be programmed for pre heating...