Drayton wiser wiring

[baileykipper]

Hi, sorry for another Wiser thread but I can’t find an answer on any of the others.

I’ve bought a Drayton Wiser WV714R9K0902 and am struggling to install it.

The existing thermostat was a Honeywell with wiring shown on the attached picture.

Most of the other examples I’ve seen have a black and grey wire but I just have L N & E and then another L cable connecting to 1.

Struggling to translate this to the new backplate. Boiler is a Worcester 29CDI.

Can anyone help?

Thanks!

 

[RandomGrinch]

I’ve bought a Drayton Wiser WV714R9K0902 and am struggling to install it.

You have a single channel Wiser, the connections are...

but I just have L N & E

You don't have an earth wire, the green/yellow wire is a switched live, returning to the boiler.
This doesn't conform to current regulations and (at the very least) should be oversleeved in brown, to denote it as a switched live.

That said, the wiring is basically the same as your old thermostat:
Connect the Brown to L on the Wiser
Blue to N
Green/Yellow to terminal 3
And reuse the Brown link wire to go between L and terminal 1 on the Wiser.

There is also far too much copper showing on your existing wiring, try and push the wires further into the terminals of the Wiser.

 

[ericmark]

This doesn't conform to current regulations

It has not complied, at least from 1966.

A circuit protective conductor shall be run to and terminated at each point in wiring and at each accessory except a lampholder having no exposed-conductive-parts and suspended from such a point.

since new colours that has never complied, even when installed.

But as to what to do about it, not so easy, I think brown tape would help, but it would need adding both ends of the cable.

I would be looking to if the base can be mounted close to where the cable comes from, and new cable used.

 

[baileykipper]

Thank you both, now sorted and working properly.

The green/yellow sleeved wire only ran into the FCU next to it where it was connected to a grey wire, I’ve swapped it out for a brown wire now.

Thanks for your help.