Drayton LP241 to Nest 3rd generation query

[Chris04]

Hello everyone,

My Drayton LP241 has started acting up so I've bought a Nest 3rd generation to replace it and the thermostat. I've searched the Internet for help with wiring and would appreciate it if someone could confirm or correct my workings out:

LP N - Nest N

LP L - Nest L

LP 1 - Nest 4 (Hot water satisfied)

LP 3 - Nest 6 (Hot water call for heat)

LP 4 - Nest 3 (Heating call for heat)

Am i correct in thinking I would then need a link cable from Nest L to Nest 2 and Nest 5?

I plan on using the new thermostat with a plug so not quite sure what to do with the old thermostat, is it possible to move wire 2 in the thermostat into wire 1 and leave in situ?

All help appreciated
Thanks.

 

[ianmcd]

Yes to all, for future information you have a Y plan system, I would disconnect the neutral wire on the existing thermostat and isolate it, it is for a heat anticipator and uses a small amount of electricity, not a large amount but no point in heating it when it isnt doing anything

 

[Chris04]

Yes to all, for future information you have a Y plan system, I would disconnect the neutral wire on the existing thermostat and isolate it, it is for a heat anticipator and uses a small amount of electricity, not a large amount but no point in heating it when it isnt doing anything

Thank you for confirming that. It is very much appreciated.

 

[Nhcd]

I have had a similar problem. You would expect solid state devices, like this, to work faultlessly, the adage is that when they fail it is early on and will then go on indefinitely. It occurred to me that random operation like this happens when computer keys jam. The boost button is similar to a computer key. Could the button be jamming?

I tried to remove the button from the front but found I would have to dismantle the controller to do that. As a quick and dirty solution I chose to squirt electrical contact cleaner through the small gaps behind the button. Luckily this was enough to clean the contacts and the controller started working.