Nest Thermostat - Released in the UK
Discussion
I've taken a look at the install instructions and it looks pretty straightforward.
The heat link contains a relay that is remotely activated by the nest. Given the way it is designed you have the option of siting it by the boiler junction box or actually replacing the existing stat I will do the latter as it's in a better location.
As with all these things, seek a qualified spark if in doubt.....
The heat link contains a relay that is remotely activated by the nest. Given the way it is designed you have the option of siting it by the boiler junction box or actually replacing the existing stat I will do the latter as it's in a better location.
As with all these things, seek a qualified spark if in doubt.....
My Nest was due to be installed tomorrow but as I was bored today I took a look and it looked easy enough in my setup.
Less than 30 minutes later all is installed and set up.
In my case I was replacing a Honeywell wireless thermostat so it was simply a case of replacing the control unit - all of four wires.
Less than 30 minutes later all is installed and set up.
In my case I was replacing a Honeywell wireless thermostat so it was simply a case of replacing the control unit - all of four wires.
Is there an installation manual for the UK version online anywhere? I thought the nest unit would just replace my wall mounted low-voltage stat from what I've read of the US version, but the heat link box thing is just confusing me as I can't figure out how it integrates into the system?
MrBig said:
Is there an installation manual for the UK version online anywhere? I thought the nest unit would just replace my wall mounted low-voltage stat from what I've read of the US version, but the heat link box thing is just confusing me as I can't figure out how it integrates into the system?
manualMrBig said:
Is there an installation manual for the UK version online anywhere? I thought the nest unit would just replace my wall mounted low-voltage stat from what I've read of the US version, but the heat link box thing is just confusing me as I can't figure out how it integrates into the system?
The heat link is radio controlled relay that responds to the thermostat which can be sited remotely. The heat link needs a full AC supply to power it and the really can work in LV or switched 230V live if you jumper the L to common. The manual recommends the heat link goes next the boiler - not always a good location in my view....page3 said:
My Nest was due to be installed tomorrow but as I was bored today I took a look and it looked easy enough in my setup.
Less than 30 minutes later all is installed and set up.
In my case I was replacing a Honeywell wireless thermostat so it was simply a case of replacing the control unit - all of four wires.
Interested to hear how you are getting on with it compared to the Honeywell wireless which is what I currently have and am struggling to justify to myself the outlay of nestLess than 30 minutes later all is installed and set up.
In my case I was replacing a Honeywell wireless thermostat so it was simply a case of replacing the control unit - all of four wires.
Bigbox said:
Interested to hear how you are getting on with it compared to the Honeywell wireless which is what I currently have and am struggling to justify to myself the outlay of nest
The Honeywell CM927 (recommended on this very forum) had been working fine, so no real need to replace it other than the Nest is new and shiny and I liked the idea of it learning and having remote access as no-one in my house ever set away mode.So far so good with the Nest. It really is a well made bit of kit and has a quality feel. It does need to be plugged in which negates simply plonking it on the wall.
It's still learning but the schedules seem to be building up nicely. It hasn't switched on auto-away yet.
I'm going to install SkyLark which is a geofencing app for iDevices.
Spring isn't really a good time for a new thermostat as my heating is on less and less. That said I can see it being a significant upgrade from a 'dumb' thermostat. The Honeywell already handled adjusting times depending on time get to temperature as well as temperature ranges so I'm already used to that functionality.
A week in and the nest seems to be working quite well. The auto learn coupled with skylark has really shown how little needs to be on. I like it fairly cool and the nest sets the daytime temp to circa 19 degrees and I've told it too drop to 16 degrees at night.
Monday it had the heating on for 45 mins, Tuesday for 15 mins. Next step is to phase in/out upstairs and downstairs TRVs to zone the heating further.
Monday it had the heating on for 45 mins, Tuesday for 15 mins. Next step is to phase in/out upstairs and downstairs TRVs to zone the heating further.
SirBadger said:
NH1 said:
It is strange. I haven't seen it yet but he says he was told that the USA ones could be hard wired in but the UK version has to run of a USB lead, I suspect the fitter just wanted an easy day. On the videos I have seen there looks to be an alarm type 12v cable with 4 connectioins, presumably +ve, -ve and 2 switch wires. There doesn't seem much space to be able to terminate a 3C&E cable in there though which I would imagine 99% of stats are wired this way.
Does anyone fancy popping the cover of theirs and see how its been done.
Does anyone fancy popping the cover of theirs and see how its been done.
There's some more detail in the installation guide
Edited by SirBadger on Friday 18th April 15:33
NH1 said:
Finally had a look at this for him yesterday, it is indeed the same as yours inside, it has a micro usb socket on the white plate which is how they left it powered so we hard wired it back to the control box with a bit of alarm cable. What is strange though is the USB lead is only 5 volts but the stat runs on 12 volts when hard wired, also it has another micro usb socket on the back of the actual nest itself, I assume for programming and such like.
Just replaced my emerson thermostat that just shat itself in mildly amusing fashion; beeped, then set itself to a temporary hold at 45 degrees fahrenheit, that has since proven to be a permanent hold, as it beeps but doesn't respond to the touchscreen.My Nest is a US model - it has the micro usb socket on the back of the main unit, but I don't think it has one on the mounting plate at all. The main reason being that's it's pretty much guaranteed to be connected to a 24V supply from the furnace controller; the compatibility list on the box says '95% of 24V systems'.
The thing about this is that the 24V supply is very low current, so apparently isn't capable of running the display and other functions as well as charging the internal battery - from reading the nest forum, several people have had to charge via the micro usb before connecting it to the backplate where it can trickle charge.
Several people have asked about downloading software updates via usb; nest support have said repeatedly that it's just for charging.
Just had an email from nPower this morning saying that I can get a Nest thermostat for £99 with complementary installation. You need to sign up to their "Intelligent Fix April 2017 energy tariff" which to be honest I haven't looked at yet. May or may not be turn out to be a good deal!
Gassing Station | Homes, Gardens and DIY | Top of Page | What's New | My Stuff