Tackling Central Heating Wiring - Google Nest Thermostat Installation - Electrician Life 

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You did a Hive installation on an oil fired boiler ages ago. It gave me the confidence to install the system myself and it’s the best thing I ever did. Many, many thanks

Fabulous video. Thank you. We've had a Nest for a while and wanted to understand how it and the central heating works. Have learnt tons. Thanks so much, Jordan.

Great video Jordan, plenty of really useful information on the Nest system. Please keep up the good work.

It's really nice that there's one centralized place for all the heating and hot water electrical connections in Britain. In the U.S. these connections tend to be made wherever they wind up and the low voltage ones are seldom in boxes at all.

Done quite a few system boiler wiring on a council contract,found it is a good start to understand which colour does to the controls to the valves stats etc the colour's are standard what ever make you use 👍

i came here simply trying to understand multizone systems for a hive install, and you have now totally sold me on a Nest!!!!....my system is more or less the same

Great tutorial! Thank you!

You made hard work of that mate 😆

Remember that you can tell if zone valve is open because the mechanical actuator will move freely.Because the motor has moved the vale to open position. Great video.

Great video, well done.

Excellent video Jordan

Great vid Jordan, keep up the good work mate.

Nice job! 😁 Those Nest thermostats refuse to work above a room temperature of 30 degrees C, so I had some trubble getting them up and running after install. So I used the button in front off the heatlink to test the heating. Once you now everything is easy! 😉

Nice to see you using bootlaces/ferrules 👌

If only this video was available 3 years ago when I DIY'd my two zone Nest install. I had to use Visio to map out all the wires in the wiring centre and plan it out. It's been working fine since so I must have done it correctly!

I love installing Nest. The software is excellent 🥸

Awesome video

Brilliant help sir,thanku

Great Job! I have a Nest Thermostat.. it was Champ! Thumb up.. Cheer..

Very talented and knowledgeable eletricain

I do like your videos and I learn some thing every time. ( well nearly every time). As you said these Nest thermostats in the UK are just switches and in your example are being applied to a very very basic UK plumbing system. In fact the heating system is exactly the same as the one I as a non plumber designed from a few diy articles when I built or perhaps more accurately project managed the build of my house 25 years ago! The Honeywell control system with zone thermostats still works fine today and I can turn the stats up and down whenever I want!! The USA Nest system looks much more interesting but then it caters for AC as well as heating and their types of heating are easier to design around individual room thermostats in stead of upstairs and downstairs zones. However they look smart and it might be nice to spend the £400 to help create an up market illusion when I sell my house next year. By the way should you not test your tester on alive wire before and after testing the circuit you are interested in? As an old codger I will relate a true story around testing....I did my training with an Electricity Board in the early 1960 s on the HV side. I had just become Authorised to issue permits to work and was isolating a 33kv line from a 33kv substation. The routine was to test the testing stick by opening a bus bar shutter and putting the stick on the bars whereupon it would glow and buz a bit. You then put the stick on the feeder terminals and it should not light....and it didn’t. However when the earthing gear was attached and the beaker was being racked in it started to buz!! Quickly racked out and retested the stick all fine. The whole area fed from the 33kv through the 11kv to the LV was supposed to be isolated and dead.....turned out there was an obscure and lost! LV back feed which was not causing enough volts to light the tester but enough to make a warning Arc when starting to rack in the earthing gear..Moral of the story?.......never lick your fingers and touch a conductor to see if it is alive!

I'd of taken the wiring center off and put a 6*4 adaptable box on and started again.

Jordan, the heat links have a unique ID on them and you can program the nest stat to connect to the required heat link, so if they do get muddled up you can just go into the settings on the Nest programmer to find out which one its paired with and swap over the nest stats accordingly.

A really helpful video, thank you. I was overwhelmed when I opened my wiring centre at first. Still trying to figure it out though, I have an air to water heat pump system by Joule / Samsung. It looks way more complex than the job in this video. I wish you covered call outs Ireland ! 😂 Two zones with 230v thermostats to each. Separate Samsung branded controller for hot water. I don’t even know where to start. If you have any suggestions or offer a remote support service I’d be willing to pay ! Thank you.

Once again a great episode of the Artisan Electrics show,👍🏼. I feel that I'm definitely learning something new every time I watch your videos. Nice to see you on the tools Jordan. 😊 Always a pleasure watching this channel 👍🏼.

i think you have to set one stat to system and the other to combi and if using for ufh then relays would be used nice video`s keep up the good work

Great little tutorial on the subject, like you say, most electricians run the other way when confronted with a heat only system. Thanks again for sharing, and replacing the propaganda rubbish on TV.

Nice tutorial. I have similar setup installed at my house. One nest has equipment set to “system boiler” to enable hot water control. Did you set another one to “combi boiler” to control only on/off of boiler?

Hi Jordan. Must admit wiring centres are becoming redundant these days. Much prefer to make my own to minimise the rats nest of cables . I always thought they just weren’t big enough . But fully understand you reusing it 😃👍👍

Another great video from Artisan. Always look forward to the notifications.

Bacteria Prevention is an exclusive feature of 3rd-gen Nest Learning Thermostats. Bacteria Prevention mode will activate if your domestic water hasn’t been heated for at least two consecutive hours in the last 48 hours. This can happen if there is a gap of more than 48 hours in your hot water heating schedule or if you are away from home for longer than 48 hours. For instance, if you have a second home or holiday home and only need hot water for weekends, you can create a hot water schedule for Saturday and Sunday, and the Bacteria Prevention mode will automatically heat the hot water tank during the week. not to do with heating.....

I prefer my Drayton wiser system. It just replaces the programmer (and in a lot of cases just sits on the existing backplate). Battery powered room stat (you don't have to have that) and individual rad stats for all over control.

Thanks for this obviously not a diy job,and don,t you wish that wiring centre was somewhat bigger,it looks like a nightmare,and that before you added the wires for the nest,excellent job thanks.

My OCD is very grateful for the two hubs coming down into the wiring centre and the top one not going up. However the ditching of the level for the install gave me a bit of a cold sweat. Edit, the switches above the wiring centre could have done with a shot of the level too! Dear me.

You should see the actuator on the valve move?

42:08 Smile Cory 😆

Hi, superb video for a 2-zone install install - thanks so much. I have one question - at timestamp 17:20... what gauge wire was used? I'm assuming it was 2.5mm2 5-core, but what about the black cable for T1 / T2 to thermostats? Was it .75mm2 for the 12V?? (Camera man needs to 'up his game' though - he might as well have been standing next door by never giving a close-up on anything 😂)

Did you check to see if the boiler could be controlled by OpenTherm as Nest supports that? When ours was installed the installers didn't and I've read it's more efficient so had to get it changed over by another tradesperson.

Great vid as normal. What wire stripper did you use for the flex. Thanks.

There are special ferrules available for two conductors, we call them "Twin" here in Germany...and I didn't translate it, we use that english term...

What electrical cables are used, 5 core white? Not sure about the black.... Can you show a close up of the wires going into the wiring centre?

And now for my next trick........!!!

Word of advice from doing heating systems for 40 years .....never touch a junction box a plumber has wired if you can help it 🥺😄

Dear sir may i please ask what is the make of the insulated sktewdrivers you are using,and the make of the curved jaw roundnose pliers you are using,i really like Them ,thanking you most kindly

And what was the spur doing in the airing cupboard , if the one downstairs was the main isolation

Just fit the box by eye he says at 19:29 , i am sure the guys who fitted the switches above your box must have had a few beers before levelling them in by eye, lol. good work Jordan.

Should any unused cores be connected to earth?

A great video, cheers. Trying to find some of the basic information has been practically impossible until now. However, I don't have an existing room based thermostat and I simply want to power the thermostat from a simple 12v PSU. Can you tell me which terminals to use on the thermostat for +12v and GND? Maybe I'm missing the point somewhere but why don't they at least label them as such instead of all the seemingly random letters? Maybe it all makes perfect sense to a heating engineer but I'm an electrical engineer. All the letters labeling the terminals mean nothing to me. It's going to link to the boiler wirelessly via Heatlink so all I need to do is power the bloody thing up ;)

I admire you trying to teach people the concept of an S system, but I left more confused that when I started! Nice try though as I agree some are scared of this, but its logical when stop and think about it.

Great video. Really appreciate you taking the time to produce this. I’ve never carried out wiring like this but this is definitely a big help. Did you take a boiler wiring course ? I was never shown any of this during my college years

great vid lad, realy good help....the first one is the tricky one...then you could wire the next 100 with no drawing. Just curious how you combined the rm stat and water system .........i take it the app on phone controls the hotwater times....can it be accessed by the roomstat menus too?

You absolutely made hard work of that. Do a diagram of what's there before you start. Then make a diagram of the new circuit . Then make the changes. I am a retired control gear engineer & I couldn't follow you. Otherwise like your work

i noticed you said the pump constantly has power and kicks in (and sometimes is wired to power up when the valve opens). ive alway been taught that it should only power up when the valve opens to avoid burning out the pump. is this something to do with newer pumps? just wondering as having constant power to the pumps makes the wiring easier for sure. handy to know for the future. cheers

Do you not find by using ferules on those wires you restrict how many can be terminated in the block?

Would you not make the stat downstairs do the ch and hw rather than the upstairs.

That wiring box is a typical rats nest of wiring you see when removing the cover. At first glance a confusing maze of wires. Can take a while to work out which wire is which. Especially for cables that disappear into the wall and emerge in some other part of the house. Easy to pick out some cables that are surface mounted and go to devices in the same location. Often easier to wire in a system from scratch than retrofit stuff working out which wire is which and what one actually needs to alter

May I ask if you have experience with Opentherm and PDHW on System boiler,: IDEAL VOGUE MAX with Unvented Water Tank? I got TADO wireless thermostat (EU model)

Hi J, Can you please make a video replacing ESI (new build property) with nest 3rd generation thermostats dual zone? Or can you please get someone to install on my property in Wokingham?

Meanwhile the chippys have hung 27 doors, the roofers stripped and renewed the roof, the gardeners grown 2 seasons worth of tomatoes, his apprentices have fully rewired the gaff and time team have been in and done a full archeological dig on and old Roman settlement in the back garden

Jordan, I heard that you have to pass by the nest stat if not it turns off the heating as it thinks nobody is home? how does it connect to the wifi?

so what turns on the heating is an AND gate.

Come on J. You should know what the terminal numbers do off by heart 😂. Pin 4 CH

20:01 Oooh Matron 😆😆😆

Doesn’t matter too much about labelling the nest’s up. If you get them wrong way round just pull the spinny therm off and swap them

the blind leading the blind

The browns of the thermostats aren't permanent lives, they connect onto the switch back from the timeclock. Also what's the point in putting a brown tag on an black cable, all's your doing is tagging a live cable saying its live, you only need to tag a cabke if its doing something other than its intended purpose i.e. using a black on a 3 cored armoured as a CPC

Programmers are old hat now, the nest stat controls the on off times via an app. I have a heatmiser setup which controls the central heating, hot water and electric underfloor heating via an App. My boiler has a live from the fused switch, then from there the power goes to the control gear and the pump wires direct to the boiler

I took my stat off the wall and it's fed by a data cable, can you help.??

to many wires in a small wiring centre, a larger wiring junction box would help. nightmare to fault find or replace parts like zone valves

You guys need to write where u making it cuz it s hard to understand whoch version is it

I think Nicks gonna be a better plumber 😂

Would have been easier just to rewire the centre neatly. Would it not have been a heat only boiler, as a system boiler contains a pump.

I’m sure if I can do wiring on cars an motorcycles I could do a hive

It’s really hard to remember 2 things , serious problems

Dejavo

Bringing wi fi into controlling your heating system is just another layer of problems when it decides not to work..great to see you fit the nest through..thank you..not for me though...

Lol I hate those style time clocks it's like three turns and the screw falls out

I found this video amusing for the wrong reason , I would of expect you to pull the fuse from the switched fused spur for additional protection and I would of expected you to put a wago on the end of the cable when you removed the room thermostat that would have saved you a couple trips back to the rooms

230v and 12v in the same Junction box and the cables not marked up. No no no.

"Central heating baffles a lot of people, a lot of electricians won't touch it" yet plumbers can handle it, kind of worrying really. Worth pointing out than in systems that have boilers with integrated pumps (probably most domestic systems) the orange wires from the valves are a call for heat from the boiler which fires up and the boiler controls the pump rather than the pump controlling the boiler (indirectly via a flow switch in the boiler).

Heating circ pumps are never on flow switches

🙈

good work guys Jordan and Cory , but was it so productive having cory with you ?

Fanny face 😁

We've seen this install before. It's the same nest install he was doing when he explained that Oscar had left the company.

Were still in Europe just not the european union. Great vid as always very informative even though confusing 😅

Why not spend some money on a Wago 207-4301?

Standard industry programmer backplater!! Terminals 1, 2 , 3, 4. Not marked??? I think they are, but surely you know what they are? EEEEK! I am beginning to have serious doubts!!!

So weird to see that installing a thermostat is an electrician’s job. In The Netherlands, almost all thermostats are low voltage on tiny little wires that connect directly to a combination boiler that delivers hot water and heating to radiators.

Is this man on the run from plod or is he a drug dealer??? In most of his videos, he changes his appearance 😂😂😂😂

Jesus , pissing in the wind

We're still in Europe, Jordan. Come on mate! lol

It makes me cringe when electricians try to do a heating engineer's job.

You get good comments and you reply to them when you get not so good comments you ignore them not very professional or respectful is it If you can’t take a bit of quits quitesisuum then you’re in the wrong job

You are still in Europe and always in Europe by geographical map but not in Europe union lol

I have my old central heating and hot water program control box on the wall in the hall, next to the wired thermostat. Would it be possible to fit the Nest white control box over where the old control box currently sits, assuming the necessary wiring is present, (which it logically should be) and the new Nest Thermostat controller where the old thermostat is? - Can anyone see a reason why that should not work?