Honeywell ST7100 to Drayton Lifestyle wiring

[davidwf]

As per title really...this is my existing system (rightly or wrongly this is how it is!)...there's no 3 way valve, just a basic gravity DHW and pumped rads...yes, it's quite old !

I cant quite get to grips with what wire goes where on the new Drayton Lifestyle LP522Si dual channel programmer as there's no commoning block and far less connections

so any help would be appreciated
What "plan" is this or is it a mish-mash?

thanks

 

[Hot&Cold]

youl need to partially rewire using a wiring center/junction box to accommodate the tethered neutral,earth and any spare terminations.Some common links will need altering.Then run a new cable to the programmer.

The st170 has clear terminal instructions,same with the lp product.

A heating technician,electrician would be able to safety test their work.Can you test your work ? Its important

some info here from stem https://www.google.co.uk/search?rlz.....3.0.0....0.GD40rMF1H9w#imgrc=UuQ0-QYlvXvcQM:

 

[davidwf]

thanks...yes, I can test it all - have replaced many timers but they all had a newer back box with the commoning done elsewhere