Nest Thermostats

Pacifico

Hi,

Looking to get one or two Nest thermostats installed.

Currently have a a gas boiler (Mynute 20e) with no external thermostats. There is a manual lever controls to turn the upstairs rads and downstairs rads on/off.

Is it possible to install one nest upstairs and one downstairs (i understand they will communicate wirelessly with the nest heat link at the boiler) and get them to control the two different zones. I assume some sort of electronic valve will have to replace the manual one, but will the nests be able to operate these?!

Thanks

Pacifico

Pacifico wrote: »

Hi,

Looking to get one or two Nest thermostats installed.

Currently have a a gas boiler (Mynute 20e) with no external thermostats. There is a manual lever controls to turn the upstairs rads and downstairs rads on/off.

Is it possible to install one nest upstairs and one downstairs (i understand they will communicate wirelessly with the nest heat link at the boiler) and get them to control the two different zones. I assume some sort of electronic valve will have to replace the manual one, but will the nests be able to operate these?!

Thanks

I'd get a plumber in first to look at the suitability of your plumbing first and then see which funky gizmo gadget will best suit your needs.

17larsson

To get the two zones to work you'll have to get a cable back to the boiler so each valve can call for heat and if you decide to do that you could consider wiring for two thermostats as it's a neater job if the Nests can be supplied with 12v using a twin cable rather than plugged into a socket.
That might not be too easy of an option though

bendzi

You will need a motorized valve for each zone. in Nest manual you will find the schematic with the connection for boiler with motorized valve.

17larsson: It is not necessery to run power supply cable (DC) to Nest, as the relay is in the heat link which will be installed just beside the boiler.

17larsson

bendzi wrote: »

You will need a motorized valve for each zone. in Nest manual you will find the schematic with the connection for boiler with motorized valve.

17larsson: It is not necessery to run power supply cable (DC) to Nest, as the relay is in the heat link which will be installed just beside the boiler.

The heatlink supplies 12v to the thermostat so a twin cable from each heat link to each thermostat would be the ideal way to power them if that's possible. Otherwise they would need to be plugged into a socket

bendzi

17larsson wrote: »

The heatlink supplies 12v to the thermostat so a twin cable from each heat link to each thermostat would be the ideal way to power them if that's possible. Otherwise they would need to be plugged into a socket

Yes, I agree, but it is better to plug it into the socket and change the position in the house for nest whatever you like. Rather run 2core cable upstairs from the boiler room just to power up the controller. Less hassle. Will you agree with me ?

17larsson

bendzi wrote: »

Yes, I agree, but it is better to plug it into the socket and change the position in the house for nest whatever you like. Rather run 2core cable upstairs from the boiler room just to power up the controller. Less hassle. Will you agree with me ?

Personally I prefer them on the wall, they look cool and at eye height they are easily readable. Obviously if it is a lot of work to get cables to the two positions it wouldn't be worth it but if there is floorboards to be lifted to get cables to the motorized valves (which might be in the hot press) then it would be a great chance to run those cables also

bendzi

17larsson wrote: »

Personally I prefer them on the wall, they look cool and at eye height they are easily readable. Obviously if it is a lot of work to get cables to the two positions it wouldn't be worth it but if there is floorboards to be lifted to get cables to the motorized valves (which might be in the hot press) then it would be a great chance to run those cables also

I know wot you mean. I have nest on the wall downstairs in the hallway, swapped with the termostat. Second nest is upstairs in the stand so I can change the position from master bad room to kids room.

bemak

Looking at the idea of installing one of these where we rent. Currently have GFCH in the sitting room which heats the rads and HWC but have an immersion as well just to do hot water on its own. Would one nest cover all this? Do people who have them installed rate them? I like the idea of being able to turn on the heating/hot water remotely.

chris_ie

On the same boat myself. I had planned on getting a Nest last year but went off the idea. Back to it again now as our programmer is crap and landing home the odd evening knowing its going to be cold sucks

We have 2 zones in the house but they are operated by a wall switch seperate to the programmer. One switch for downstairs and one for upstairs. Was hoping we could get the one thermostat and be able to switch on/off upstairs and downstairs from the app. I knew the thermostat would only switch on the heat for that heatlink, but thought the app could control the switches too.

Dont think thats possible. So I'd likely have to leave the 2 wall switches as they are and replace the programmer. Then maybe in future add a second heatlink and thermostat if the first proved a success.

bemak

After talking to a few installers controlling the immersion is possible by installing a contactor switch at the immersion which the nest can link to. not a major job once the run from the boiler to the HP is straightforward enough