Nest thermostat compatible wiring

[Grahalex]

Is the switch/fused spur next to the programmer/boiler? If it's a y plan you will have 1 three port valve next to the cylinder if it's an S plan you will have 2 x two port valves next to the cylinder.

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I have one port valve, see photo. There is a switch that is fused next to the boiler and programmer.

 

[Leesparkykent]

The nest heat link could replace the programmer but the cable that goes to the thermostat will be at the wiring centre so won't be able to be connected to the heat link. If the programmer and switched fused spur is next to the boiler then you may not have a permanent live at the wiring centre as it's not needed being a Y-plan. An electrician who knows heating will be able make it work.

 

[davesparks]

The thermostat is battery powered, the receiver that will replace the current thermostat is 230v. You need a neutral and live for it to work....this will need testing and configuring by someone competent.

The nest thermostat is not battery powered, it is either powered by a plug in adaptor or a 12V supply from the heatlink.

 

[davesparks]

Oh I see. I thought that the Heat link replaced the programmer. I have a Honeywell programmer next to the boiler, which has an isolation switch next to it. My boiler is 5 years old.

The nest system replaces both the thermostat and the programmer.
However the heatlink will probably not go in the same location that the programmer is in now, usually it will go next to the wiring centre in the airing cupboard.
Your thermostat will almost certainly be 230V currently, but the installer will connect this cable to the 12V terminals of the heatlink for the nest thermostat.

 

[DJ Ovengloves]

Blooming heck...I was convinced the OP said Hive. These Codiene cold pills are awesome!

The nest thermostat is not battery powered, it is either powered by a plug in adaptor or a 12V supply from the heatlink.

 

[Grahalex]

The nest system replaces both the thermostat and the programmer.
However the heatlink will probably not go in the same location that the programmer is in now, usually it will go next to the wiring centre in the airing cupboard.
Your thermostat will almost certainly be 230V currently, but the installer will connect this cable to the 12V terminals of the heatlink for the nest thermostat.

Sounds like I will be ok then , there is room in the airing cupboard for the heat link.

 

[Electrical2go]

You can find an approved Nest Pro Installer near you by following the link Nest pro installation - https://nest.com/uk/nest-pro-installation/

You might find one who will do a free site visit

For the sparks out there that may be interested i believe the scheme is open to all.

....and then you can always use us for your Nest products.......Said a forum Sponsor

Nest - https://www.electrical2go.co.uk/nest

 

[Grahalex]

I have sent off for one from Amazon, they are on offer at £154.99.
I have asked for a quote for a Nest Pro install.
Thanks for everyones help.

 

[Grahalex]

I have had the Nest fitted now. The electrician had to put a permanent live cable in, the heat link went in the airing cupboard and he used the wires from the old thermostat.