for schematics click here: www.urbanplumbers.co.uk/nest-thermostat-installation-schematics-y-plan-system-with-hot-water-cylinder-and-3-port-mid-position-valve/
Great video! I’m a fairly competent diy plumber/electrician but struggling with over complex explanations of installing nest. You sir absolutely nailed it, can’t thank you enough for the clear professional explanation. I feel I can now easily do this myself
Still so useful! I just installed the Nest in my new house and everything was very straightforward (for a novice) purely because of the clarity of explanations and step-by-step approach from this video. Thank you!!
Thanks for this video, gave me the confidence to complete my install without issue! Helpful after install tips, if your hot water is always on after install and you cant figure out why, go to Settings> Equipment> Bacteria Prevention and disable this at least temporarily. It runs because the system has no record of the last time the water was heated and as the name suggests runs to prevent bacteria build up. (You may want to enable this again later!) If you find your heating turning on seemingly at random before your scheduled time, go to Settings> Nest Sense> True Radiant and turn off. Hopefully someone scrolls through 268 comments and finds this helpful!
An excellent tutorial. It exactly matched the setup I had to update and allowed me to complete a Nest installation without any problems. My initial horror of seeing the rats nest of wiring in the main junction box was totally calmed when you explained the step by step transfer of connections from the original controller to the Nest. Brilliant!
I have just stripped and re-wired my entire system with Y valve. All the previous plumbers just messed it up. Thanks to your schematics and video, I did it myself, and now all 3 possible states work perfectly.
Best video for a Y plan. After watching this video, got the courage to install it directly in the airing cupboard which meant I could use the existing wiring to power the nest thermostat from heat link. Having the wiring diagram for the wiring centre helped. Also during set up, there was no option for regular boiler, realise have to choose system boiler. Had to rest the thermostat and do it again. Cheers
Thank you very much for such a clear and straight forward explanation of a y plan installation with nest heat link. I wonder if anyone can offer me a little help though. Rather than a boiler, we have a geothermal system, with the geothermal heating loop switching between the radiator heating loop or to the hot water storage cylinder via the valve. The hot water cylinder has its own thermostat of course, but also has a separate immersion heater. This separate immersion heater provides backup if the geothermal system fails, but a can also boost hot water heating at a rate above what can be supplied by the geothermal heat exchanger. I believe it’s possible to also integrate the hot water cylinder independent immersion heater into the nest heat link and configure nest such that base water heating can be by geothermal using a schedule, with the immersion heater being called upon to provide top up heat if the geothermal system cannot reach the hot water cylinder thermostat temperature set point. Can anyone provide guidance on how the heat link y plan wiring diagram needs to change to integrate the HW cylinder separate immersion heater please. Any guidance on configuring nest to primarily take HW supply from the geothermal heat exchanger in a HW schedule and supplement this with the immersion heater if necessary to reach cylinder temp would be really appreciated. Thanks, Jason
This was so helpful. My new house has Y plan heating and it's a nightmare to work out what's what. Following this I was done in less than an hour. Much Appreciated!
Thanks for that video - I just did my install on an house with old coloured wiring, a rats nest of a wiring centre with lots of sheaths over wires, a circuit breaker, 4 wired t-stat and an oil boiler and everything seems to be working fine. The wife is happy so job done !
You are a genius my friend! Your excellent video just helped me install a new Nest system which I decided to do myself after chasing several plumbers for quotes but nobody came back to me. Thank you!
Cheers for the video. Just installed my Nest now and all seems to be working well. Certainly couldn’t have done it without your tuition. Double thumbs up!
Thank you for this. I've been wondering whether to install a smart system. Because I live in a modern house which is very well insulated, there is very little financial advantage in doing so because it would probably take 4 or 5 years for it to pay for itself, so my only consideration is to save energy for future generations. I designed and installed a central heating (Y plan) system about 30 years ago when I was in my 20s (before computers, so I had to do all of the heat-loss calculations on large sheets of paper). I live in a different house now, but with the same setup of heating & hot water, so I'm okay around this system. It has been a long time since I installed that system, but I remember the basics. Your video confirms that I remember enough to have confidence, and it prompted me to recall the bits I had probably forgotten. There is one thing that bugs me about the Nest system, and that is why the heatlink cannot simply fit directly onto an old programmer's backplate (even if some slight re-wiring is needed). Furthermore, now that the old programmer will be redundant, why doesn't the heatlink use the same screw holes? I only wonder because my programmer is mounted on kitchen tiles and I'm not sure there is enough wiring behind the tiles that I can pull through without extending it without using another unsightly junction box). I figure I could mount another metal backplate, or a plywood square, but it feels unnecessary. I figure I will get my head around it eventually.
Thank you so much. Huge help!! I'm no expert in this area, and I've always been confused with how my system actually works. Asked a few plumbers who have done work on it in the past and none of them broke it down like this. I didn't even know it was called Y plan!!
Thank you very much, this really helped me fit the thermostat, great video. I made 2 mistakes which I have rectified, maybe this will help someone else. When you measure across T1 and T2 looking for 12V, make sure your multimeter is on DC not AC, otherwise you get a false reading (This caused me hours of head scratching). After fitting, there was no option on the Nest Thermostat or the App to control hot water. To solve this, you need to go into the settings of the thermostat, then click on Equipment, then Pro Setup, then select System Boiler.
Czesc! That was absolutely brilliant! I have a Y Plan CHS with the Junction Box and have been trawling thru Videos and forums looking for a clear and concise process to Self-install NEST on my CH and the advice is full of confusion and lots of 'plumber speak' that is difficult to understand - even your Schematics is idiot Proof!! - buying the NEST Today on a Black Friday deal and will have this installed by the Weekend, you've made this look so easy - Thank You!
@@UrbanPlumbers Seriously - brilliant demonstration - just one question if I may. My plumber installed a Salus RT310rf Wireless Thermostat last year as part of a new Intergas System Boiler Install (we didn't have a Room Stat before) and it's been fine - I just want to get more control remotely and like the idea of the Nest learning function. When the Salus receiver was installed he didn't remove my Drayton LP522 2 Channel Programmer and said I can leave the CH on permanently (with the Thermostat controlling the demand for heat rather than the timer) or use the program to schedule CH On and Off times with the wireless Thermostat controlling the Room temperatures. It looks like the Nest completely replaces the LP522 - if this is the case do I simply disconnect the wires for the Salus Reciever in the wiring Centre and get rid of it. Any advice would be much appreciated. Thanks.
@@UrbanPlumbers Urban Plumbers Hi My Friend. Installed the NEST 3rd Gen yesterday as per your instructions, which were brilliant. It went well, bit difficult to link the Common Wires from L-2 & 2-5 due to small connection holes to fit 2 wires in so I used a Connection Block to the Main Live feed and split to L,2 & 5. Fired up Thermostat via USB wall plug and set up. It works perfectly for Heating and fires up and shuts down the Boiler perfectly when requested. However it doesn't seem to do anything to the Hot Water. My 3 Port Valve does not move at all and there is No option for Hot Water on the App? There is no Boost or Schedule options for Hot Water either. This morning there was no hot water for the house so we pressed the Manual mode button on the Heat Link (the user instructions that come with the Nest are rubbish we just pressed the button and hoped something would happen) and that gave us Hot Water (there is a water drop icon on the Heat Link now) but the 3 Port Valve still doesn't move over? I've wired exactly as you have done in both the Heat Link and Wiring Box. Have I missed something, Set up the Thermostat/App wrong or my Boiler is not compatible? I have an Intergas HRE 30 SB (system Boiler) Sorry for the long message. Any advice will be greatly appreciated. Many thanks. Edit: Just to say I'm now sorted and the Nest is running perfectly with Hot Water control now on the App. Had a play around with settings after a Reset and it's fine.
You create some outstanding videos with wit honesty and clarity. Thank you. This one was particular helpful fitting a Nest 3 to my old Y plan system I installed 30 years ago. The boiler just upgraded to Greenstar Ri by a registered Gas engineer, sadly a poor job but I have my warranty and can now bring up to an acceptable standard. I wish you lived nearer I’m too old for this now, don’t suppose you have a clone that lives up north.
Such a great video. I've come on here for some trouble shooting at the last points about timing between testing hot water and heating is really useful. Many thanks will look forward to more videos
Brilliant instructions, thanks. I got one problem and hope anyone can help. My boiler kicks off for hot water when cylinder thermostat is set below desired temperature , and then I have to force motorised valve to feed hot water. The motorised valve is working fine, I even replaced it with a new one and can see it switches between hot water and central heating correctly but the boiler only kicks off when cylinder thermostat is below desired temperature, let’s say zero or 10 degrees
It would be great to see you do a how to video on converting an old y-plan 3-port valve, controller, mains thermostat and cylinder stat. My aim is to basically gut the old wiring and replace it with VR66/02 and VRC720. Thank you!
@@UrbanPlumbers no we don't have y plan in India but British Indian who still have there lands have install y plan like uk and have taken nest thermostat from UK and install in India most off our systems work buy Sola panels and combo Boilers made in India thanks once again
I don't seem to have a "HW off" cable connected in my existing thermostat. This makes sense because the hot water has always come on (incorrectly) with the heating for some reason. However, it doesn't transfer to the Nest - there is continuity between 1 and 2 and 2 and 3 whether the heating is on or off, resulting in the heating not coming on at all. Any ideas? p.s. it is definitely a Y-plan. I seem to have an NS5 actuator but only 3 wires coming out of it.
Had anew Baxi 800 system boiler, new 3 port valve, new CYL Thermostat, and New Nest. Followed all your wiring downloaded diagram and cannot get boiler to fire up, I.e. no 240v to orange/boiler live. Changed the Nest Heat Link. Only way to get 240v to boiler live is by turning up the Cyl Thermostat and turning on HW boost on nest. 27v on orange/boiler live when no HW or Heating. Thanks for any help
My main control unit is upstairs next to hot water tank, programer is in kitchen next to boiler and room thermostat is in hallway. I would put heat link in kitchen next to the boiler and old programmer and connect up as explained, got that. I then get stuck as T1 and T2 currently go from hallway to main control unit same as your demonstration but how do I then get them to go from hallway to heat link in kitchen?
I followed your instructions and its great. The only issue i have is my old thermostat has 3 wires. My nest is not firing up the boiler when only heating is required. Boiler is fired up when hot water is on and heating turns on. The 3rd connection of the thermostat… is this what would fire up the boiler? Do i connect this to “Heat On” wiring?
Thank you very much for making all those tasks simple! I am trying to add nest to my home now and in my programmer i don’t have (wire 1 hot water off) what should i do in thais case?
I have this y system but had to reboot it. I can now only get heating on the app rather than heating and water. Can you show how to set this up please?
very infomative a question though if you set up a nest /hive for y system and change to a combi system, can you use same nest / hive unit or do you need an upgrade on either
what do you do with the thermostat if you art going to put the nest there but its sitl lon the wall otehr than set it perminantly on? and also if you cant find the wiring junction only the programmers old box?
Tried to install generation three onto a Y PLAN system. Heat link light solid green thermostat connected ok. But boiler doesn’t seem to recognise heat link and is continuously firing. Checked all the wiring every thing is where it’s supposed to be . Honey well wiring station was working fine with old programmer and thermostat . I made sure I move ch on over to number 5 -white cable for 3port. Can’t work out what’s wrong.
Doesn't the nest control hot water? Wondering why you still have to use the hot water thermostat. I want to control everything from the nest thermostat
Great video - thanks for taking to time to record and share! I’m just about getting my head around the wiring now. One question I had was - I wish to utilise my room stat wiring in my hallway to mount the nest stat to the wall. The cable (3 core & E) appears to run directly up to my wiring centre in the airing cupboard. Do I need to install the nest heat link inside the airing cupboard instead of where the programmer is by the boiler in order to utilise the stat wiring? And if yes do I essentially just disconnect and make through any wires that require it form the existing programmer. (Located underneath my boiler in the utility room)
I’m after an answer for the exact same thing, my programmer is in my garage whereas my wiring centre is in the airing cupboard upstairs, I really want to use the existing stat wires but stuck with what to do now! Did you ever figure this out?
late repaly - but for others - install your heatlink by the wiring center and that way you can use your thermostat wiring as it uusually goes directly to the wiring center. Look for a wire connecting to the heating zone valve brown in the wiring center - it should connected to SL from the thermostat
Like your content Could you please help me work out what problem i have Cdi 30 system boiler on y plan with Cyl and three port valve, with removed F& E as converted to sealed system I get rads heating when I switch HW on with CH off 3 port ok and no reverse circulation on rads
Very nicely put together video. Extremely clear and easy to follow and as I have the exact same setup. It's easy to translate it across. One question. What are the ends you have on your wires that keep them crimped so neatly.
Amazing video. I watched at least 10 different videos but only you helped me to understand which cables :) I have one question. I have very old timer who controls extra electric heater installed in my tank. I don't know how and when this stars but when my gas boiler wasn't working I still had hot water automatically. Can I control this heater by nest thermostat? Which is the best way? Thanks
Great video, tomorrow I will wire my new Nest up using your information. I also have an immersion heater that I had hoped the nest could turn on during the night when our electric is only 5p per kw, I figured this would be cheaper than using oil currently over 90p per litre. Is it going to be possible or should I be buying a separate time to control it?
Great Video, Many thanks Super helpful & informative Installed the nest 3 today with almost no issues ( apart from forgetting to tighten the 12V feed screws lol) All test seem to have worked Any chance of Y plan open therm nest video?
Hi there im was looking for problem solutions so i find your vídeos here, maybe you can help me, i buy a house dat have a new warming sistem and every time dat the boiler starts it dus a kind off explosion like a realy Strong bang but starts, more in de Summer off when the weather is warm outside because de radiators are off den it happens. Maybe you can help me.
Hi really like your videos.if you intend on using the stand for the nest and not the existing room stat.what do you have to do with the thermostat connections ?
Co w przypadku kiedy w programerze mam podlaczone tylko 5 kabli (brak nr1. HW OFF) a termostat jest radiowy i nie ma wyprowadzonych kabli do niego? Pozdrawiam.
@@UrbanPlumbers Dzieki za szybka odpowiedz. Mam 3 way valve, zbiornik wody i zbiorniki na strychu plus termostat radiowy z odbiornikiem ktory jest podlaczony albo raczej przecina sygnal do glownej skrzynki zasilajacej heating (Kabel zasilajacy -> skrzynka rozdzielajaca-> odbiornik radiowy -> skrzynka glowna). Wiec w sumie 3 skrzynki i duzo kabli :). Wydaje mi sie ze musze ten odbiornik wymontowac i spiac kable zasilajace bezposrednio do skrzynki. Braku HW off nie umiem wyjasnic...wszystko dziala poprawnie.
Hi, great video. I've installed nest from a honeywell 42005748 junction box which was connected to LP522 drayton programmer. Hot water is working fine but heating is not. The wire for CH on which was connected to the old programmer i have in terminal 3 on the nest. It does not appear however to switch the 3 port valve to heating and not hot water, so boiler does not fire when heating is called from nest, but if i call for hot water then the boiler fires and heats tank for hot water only. I have all the jumps as per instructions but wondering if i've connected the wrong wire from the junction box for switching the 3 port valve so that it feeds the radiators?
Were ever able to fix this? I have bit similar issue. My Heating works. Also hot water also works in a way. When you call Hot water only the valve stuck in the middle so I do get heating as well.
Excellent, bit I have a question.... assuming you dont want to put the nest at the site of the old thermostat, what should we do? Just twist the 2 wires together???
for schematics click here:
www.urbanplumbers.co.uk/nest-thermostat-installation-schematics-y-plan-system-with-hot-water-cylinder-and-3-port-mid-position-valve/
Great video! I’m a fairly competent diy plumber/electrician but struggling with over complex explanations of installing nest. You sir absolutely nailed it, can’t thank you enough for the clear professional explanation. I feel I can now easily do this myself
Glad it was helpful!
Well done the first person to explain the y plan set-up fully!!
Malcolm Bale glad you liked it!
Malcolm Bale i taught this was a set up that most people really struggle with judging by number of problems with y plan installs
I’m an electrician with 40 years experience.
Your video is superb. Well done 👍
Thanks 👍
Still so useful! I just installed the Nest in my new house and everything was very straightforward (for a novice) purely because of the clarity of explanations and step-by-step approach from this video. Thank you!!
I’m a retired plumber with electrical experience and congratulate you on a great video, keep up this standard of educational videos
Thanks for this video, gave me the confidence to complete my install without issue!
Helpful after install tips, if your hot water is always on after install and you cant figure out why, go to Settings> Equipment> Bacteria Prevention and disable this at least temporarily. It runs because the system has no record of the last time the water was heated and as the name suggests runs to prevent bacteria build up. (You may want to enable this again later!)
If you find your heating turning on seemingly at random before your scheduled time, go to Settings> Nest Sense> True Radiant and turn off.
Hopefully someone scrolls through 268 comments and finds this helpful!
What a brilliant teacher! Loved the professionalism and yet ...so clear and easy to understand. Thank you
An excellent tutorial. It exactly matched the setup I had to update and allowed me to complete a Nest installation without any problems. My initial horror of seeing the rats nest of wiring in the main junction box was totally calmed when you explained the step by step transfer of connections from the original controller to the Nest. Brilliant!
*Works as expected **Fastly.Cool*
I have just stripped and re-wired my entire system with Y valve. All the previous plumbers just messed it up. Thanks to your schematics and video, I did it myself, and now all 3 possible states work perfectly.
This video was amazingly helpful. I managed to successfully fit my Nest using this video alone. Thanks so much.
Best video for a Y plan. After watching this video, got the courage to install it directly in the airing cupboard which meant I could use the existing wiring to power the nest thermostat from heat link. Having the wiring diagram for the wiring centre helped. Also during set up, there was no option for regular boiler, realise have to choose system boiler. Had to rest the thermostat and do it again. Cheers
Glad it helped
Thank you very much for such a clear and straight forward explanation of a y plan installation with nest heat link. I wonder if anyone can offer me a little help though. Rather than a boiler, we have a geothermal system, with the geothermal heating loop switching between the radiator heating loop or to the hot water storage cylinder via the valve. The hot water cylinder has its own thermostat of course, but also has a separate immersion heater. This separate immersion heater provides backup if the geothermal system fails, but a can also boost hot water heating at a rate above what can be supplied by the geothermal heat exchanger. I believe it’s possible to also integrate the hot water cylinder independent immersion heater into the nest heat link and configure nest such that base water heating can be by geothermal using a schedule, with the immersion heater being called upon to provide top up heat if the geothermal system cannot reach the hot water cylinder thermostat temperature set point.
Can anyone provide guidance on how the heat link y plan wiring diagram needs to change to integrate the HW cylinder separate immersion heater please. Any guidance on configuring nest to primarily take HW supply from the geothermal heat exchanger in a HW schedule and supplement this with the immersion heater if necessary to reach cylinder temp would be really appreciated.
Thanks, Jason
This was so helpful. My new house has Y plan heating and it's a nightmare to work out what's what. Following this I was done in less than an hour. Much Appreciated!
Just echoing some other comments this was by far the most complete and helpful video, got mine up and running after watching this, thanks
nice one.
Thanks for that video - I just did my install on an house with old coloured wiring, a rats nest of a wiring centre with lots of sheaths over wires, a circuit breaker, 4 wired t-stat and an oil boiler and everything seems to be working fine. The wife is happy so job done !
Paul Holden well done !
You are a genius my friend! Your excellent video just helped me install a new Nest system which I decided to do myself after chasing several plumbers for quotes but nobody came back to me. Thank you!
Cheers for the video. Just installed my Nest now and all seems to be working well.
Certainly couldn’t have done it without your tuition. Double thumbs up!
What I wouldn't give for your skill and knowledge, then finally I could fix my mess of a central heating system 😪
this video is pure gold. Thank you for such detail !
Thank you for this. I've been wondering whether to install a smart system. Because I live in a modern house which is very well insulated, there is very little financial advantage in doing so because it would probably take 4 or 5 years for it to pay for itself, so my only consideration is to save energy for future generations. I designed and installed a central heating (Y plan) system about 30 years ago when I was in my 20s (before computers, so I had to do all of the heat-loss calculations on large sheets of paper). I live in a different house now, but with the same setup of heating & hot water, so I'm okay around this system.
It has been a long time since I installed that system, but I remember the basics. Your video confirms that I remember enough to have confidence, and it prompted me to recall the bits I had probably forgotten.
There is one thing that bugs me about the Nest system, and that is why the heatlink cannot simply fit directly onto an old programmer's backplate (even if some slight re-wiring is needed). Furthermore, now that the old programmer will be redundant, why doesn't the heatlink use the same screw holes? I only wonder because my programmer is mounted on kitchen tiles and I'm not sure there is enough wiring behind the tiles that I can pull through without extending it without using another unsightly junction box). I figure I could mount another metal backplate, or a plywood square, but it feels unnecessary. I figure I will get my head around it eventually.
Thank you so much!! I've successfully installed my Nest thermostat thank you and this video!!
This was the perfect guide to set up my nest, changed it from a hive set up. Wiring centre is spaghetti junction but managed to figure it out. Thanks!
Glad I could help!
Thank you helped alot figuring out where me and my plumber were going wrong!
Thank you so much. Huge help!! I'm no expert in this area, and I've always been confused with how my system actually works. Asked a few plumbers who have done work on it in the past and none of them broke it down like this. I didn't even know it was called Y plan!!
Glad it helped!
Thank you very much, this really helped me fit the thermostat, great video.
I made 2 mistakes which I have rectified, maybe this will help someone else.
When you measure across T1 and T2 looking for 12V, make sure your multimeter is on DC not AC, otherwise you get a false reading (This caused me hours of head scratching).
After fitting, there was no option on the Nest Thermostat or the App to control hot water. To solve this, you need to go into the settings of the thermostat, then click on Equipment, then Pro Setup, then select System Boiler.
all correct and good info!
Again, great video and great explanation, very clear information. Thank you
Amazing video!! You actually taught me a huge amount here! Thanks so much for posting. I had no idea about S or Y plan heating systems before this.
You are welcome. Thanks for the comment!
Cant stress how much this helped!
Glad it was helpful
Czesc! That was absolutely brilliant! I have a Y Plan CHS with the Junction Box and have been trawling thru Videos and forums looking for a clear and concise process to Self-install NEST on my CH and the advice is full of confusion and lots of 'plumber speak' that is difficult to understand - even your Schematics is idiot Proof!! - buying the NEST Today on a Black Friday deal and will have this installed by the Weekend, you've made this look so easy - Thank You!
Beebejay good luck!
@@UrbanPlumbers Seriously - brilliant demonstration - just one question if I may.
My plumber installed a Salus RT310rf Wireless Thermostat last year as part of a new Intergas System Boiler Install (we didn't have a Room Stat before) and it's been fine - I just want to get more control remotely and like the idea of the Nest learning function.
When the Salus receiver was installed he didn't remove my Drayton LP522 2 Channel Programmer and said I can leave the CH on permanently (with the Thermostat controlling the demand for heat rather than the timer) or use the program to schedule CH On and Off times with the wireless Thermostat controlling the Room temperatures.
It looks like the Nest completely replaces the LP522 - if this is the case do I simply disconnect the wires for the Salus Reciever in the wiring Centre and get rid of it. Any advice would be much appreciated. Thanks.
Beebejay correct remove both salus and programmer
@@UrbanPlumbers Urban Plumbers Hi My Friend. Installed the NEST 3rd Gen yesterday as per your instructions, which were brilliant.
It went well, bit difficult to link the Common Wires from L-2 & 2-5 due to small connection holes to fit 2 wires in so I used a Connection Block to the Main Live feed and split to L,2 & 5.
Fired up Thermostat via USB wall plug and set up.
It works perfectly for Heating and fires up and shuts down the Boiler perfectly when requested.
However it doesn't seem to do anything to the Hot Water.
My 3 Port Valve does not move at all and there is No option for Hot Water on the App?
There is no Boost or Schedule options for Hot Water either.
This morning there was no hot water for the house so we pressed the Manual mode button on the Heat Link (the user instructions that come with the Nest are rubbish we just pressed the button and hoped something would happen) and that gave us Hot Water (there is a water drop icon on the Heat Link now) but the 3 Port Valve still doesn't move over?
I've wired exactly as you have done in both the Heat Link and Wiring Box.
Have I missed something, Set up the Thermostat/App wrong or my Boiler is not compatible?
I have an Intergas HRE 30 SB (system Boiler)
Sorry for the long message.
Any advice will be greatly appreciated.
Many thanks.
Edit: Just to say I'm now sorted and the Nest is running perfectly with Hot Water control now on the App.
Had a play around with settings after a Reset and it's fine.
Very good and clear. I am now prepared to commit to nest. Thanks.
Michael Arber thank you for the comment!
This is the very best tutorial for this topic that I have come across. Thank you.
You are welcome
Your a very thoughtful individual thank you.
I try
I DID IT AND IT WORKS. Thank you so much for the video. You managed to save me a small fortune
well done!
You create some outstanding videos with wit honesty and clarity. Thank you.
This one was particular helpful fitting a Nest 3 to my old Y plan system I installed 30 years ago. The boiler just upgraded to Greenstar Ri by a registered Gas engineer, sadly a poor job but I have my warranty and can now bring up to an acceptable standard.
I wish you lived nearer I’m too old for this now, don’t suppose you have a clone that lives up north.
What a through informative intelligently delivered video :) thank you ever so much
Your brilliant video has made my installation straight forward, thank you.
Great
Excellent straight forward video.
You are a life saver!!!
The best instruction video bar far.
Thank you so much 😘
Best video ive seen on this subject..thanks.
Incredibly clear and well made video. Love the camera permission reaction :)
thanks!
Excellent video, helped to make installing my nest thermostat easy, thanks.
Best explained breakdown on here.
Mike Fewtrell thank you !!!
Good video, did my first fit on a y plan today, helped me no end, thanks
Great !
Brilliant video. Helped me to fit my Nest 3 without any problems.
Such a great video. I've come on here for some trouble shooting at the last points about timing between testing hot water and heating is really useful. Many thanks will look forward to more videos
I am glad it was helpful
If I had an interest in plumbing, I'm sure I'd find this video very useful!
This video is a freaking god send. Thank you!
No worries :)
You are an excellent teacher, thank you.
Thank you, finally a layout that seems to work with mine. Been struggling on and off for a while now. New subscriber and liked :-)
Charl Tintinger glad it worked for you
Brilliant instructions, thanks. I got one problem and hope anyone can help. My boiler kicks off for hot water when cylinder thermostat is set below desired temperature , and then I have to force motorised valve to feed hot water. The motorised valve is working fine, I even replaced it with a new one and can see it switches between hot water and central heating correctly but the boiler only kicks off when cylinder thermostat is below desired temperature, let’s say zero or 10 degrees
Thanks I found this perfect to help me do a self installation.
Great to hear!
Excellent video, well explained and demonstrated.. probably the best explanation I've seen!! 👍
Thank you for a nice comment.
It would be great to see you do a how to video on converting an old y-plan 3-port valve, controller, mains thermostat and cylinder stat. My aim is to basically gut the old wiring and replace it with VR66/02 and VRC720. Thank you!
Super star, you are!!!!!!!
Big thanks
dzięki super przydatny poradnik. Pozdrawiam
Prosze bardzo!
Great video and clear instructions, I followed and - it all works!! Thankyou so much 👍
you are welcome.
Brilliant made the job a lot easier 👍
Glad it helped
Thank you very comprehensive video
Great video. Super helpful. Thanks for making it!
No worries, thanks
Fantastic the best explanation you not D o d but you are G O D thanks a lot from India
Didn’t know you had Y plan in India???
@@UrbanPlumbers no we don't have y plan in India but British Indian who still have there lands have install y plan like uk and have taken nest thermostat from UK and install in India most off our systems work buy Sola panels and combo Boilers made in India thanks once again
Very well explained
Thank you !
A very easy to understand video.
Glad it was helpful!
Really helpful. Thanks.
You are a total superstar, thank you
You're welcome!
I don't seem to have a "HW off" cable connected in my existing thermostat. This makes sense because the hot water has always come on (incorrectly) with the heating for some reason. However, it doesn't transfer to the Nest - there is continuity between 1 and 2 and 2 and 3 whether the heating is on or off, resulting in the heating not coming on at all. Any ideas?
p.s. it is definitely a Y-plan. I seem to have an NS5 actuator but only 3 wires coming out of it.
Had anew Baxi 800 system boiler, new 3 port valve, new CYL Thermostat, and New Nest. Followed all your wiring downloaded diagram and cannot get boiler to fire up, I.e. no 240v to orange/boiler live. Changed the Nest Heat Link. Only way to get 240v to boiler live is by turning up the Cyl Thermostat and turning on HW boost on nest. 27v on orange/boiler live when no HW or Heating. Thanks for any help
My main control unit is upstairs next to hot water tank, programer is in kitchen next to boiler and room thermostat is in hallway.
I would put heat link in kitchen next to the boiler and old programmer and connect up as explained, got that.
I then get stuck as T1 and T2 currently go from hallway to main control unit same as your demonstration but how do I then get them to go from hallway to heat link in kitchen?
I followed your instructions and its great. The only issue i have is my old thermostat has 3 wires. My nest is not firing up the boiler when only heating is required. Boiler is fired up when hot water is on and heating turns on. The 3rd connection of the thermostat… is this what would fire up the boiler? Do i connect this to “Heat On” wiring?
Well done . A great video
One question if I may?
On the same system how do I turn the temp of my hot water down please?
It really is boiling.
Thank you very much for making all those tasks simple! I am trying to add nest to my home now and in my programmer i don’t have (wire 1 hot water off) what should i do in thais case?
I have this y system but had to reboot it. I can now only get heating on the app rather than heating and water. Can you show how to set this up please?
Excellent video!!
Glad you liked it!
very infomative a question though if you set up a nest /hive for y system and change to a combi system, can you use
same nest / hive unit or do you need an upgrade on either
what do you do with the thermostat if you art going to put the nest there but its sitl lon the wall otehr than set it perminantly on? and also if you cant find the wiring junction only the programmers old box?
Great video.
Thanks!
Quality mate 💪
Very good brilliant
thank you mate!
Tried to install generation three onto a Y PLAN system. Heat link light solid green thermostat connected ok.
But boiler doesn’t seem to recognise heat link and is continuously firing. Checked all the wiring every thing is where it’s supposed to be . Honey well wiring station was working fine with old programmer and thermostat . I made sure I move ch on over to number 5 -white cable for 3port. Can’t work out what’s wrong.
Doesn't the nest control hot water? Wondering why you still have to use the hot water thermostat. I want to control everything from the nest thermostat
Great video - thanks for taking to time to record and share! I’m just about getting my head around the wiring now. One question I had was - I wish to utilise my room stat wiring in my hallway to mount the nest stat to the wall. The cable (3 core & E) appears to run directly up to my wiring centre in the airing cupboard. Do I need to install the nest heat link inside the airing cupboard instead of where the programmer is by the boiler in order to utilise the stat wiring? And if yes do I essentially just disconnect and make through any wires that require it form the existing programmer. (Located underneath my boiler in the utility room)
I’m after an answer for the exact same thing, my programmer is in my garage whereas my wiring centre is in the airing cupboard upstairs, I really want to use the existing stat wires but stuck with what to do now! Did you ever figure this out?
late repaly - but for others - install your heatlink by the wiring center and that way you can use your thermostat wiring as it uusually goes directly to the wiring center. Look for a wire connecting to the heating zone valve brown in the wiring center - it should connected to SL from the thermostat
Awesome..!
Super informative..♡
Thanks a lot 😊
very clear and easy to follow thank you, do you have a video for y plan using nest on opentherm with a modern boiler
Like your content
Could you please help me work out what problem i have
Cdi 30 system boiler on y plan with Cyl and three port valve, with removed F& E as converted to sealed system
I get rads heating when I switch HW on with CH off
3 port ok and no reverse circulation on rads
Very nicely put together video. Extremely clear and easy to follow and as I have the exact same setup. It's easy to translate it across. One question. What are the ends you have on your wires that keep them crimped so neatly.
I don't get who leaves thumb downs. .. Mad, Thanks
drunk people
My existing programmer does not have a wire for hot water off. I have a 3 port valve. Can I still install a Nest.
Amazing video. I watched at least 10 different videos but only you helped me to understand which cables :)
I have one question. I have very old timer who controls extra electric heater installed in my tank. I don't know how and when this stars but when my gas boiler wasn't working I still had hot water automatically. Can I control this heater by nest thermostat? Which is the best way? Thanks
Great video but with only Live, Neutral & Earth going to the boiler how does the boiler know when to fire up.
There is SL,L,N,E going to the boiler. On my bird there is no perm live going to the bulb, just SL.
Hi. Great video, however I don’t have either. We have a combi boiler?
Great video, tomorrow I will wire my new Nest up using your information.
I also have an immersion heater that I had hoped the nest could turn on during the night when our electric is only 5p per kw, I figured this would be cheaper than using oil currently over 90p per litre.
Is it going to be possible or should I be buying a separate time to control it?
Great Video, Many thanks
Super helpful & informative
Installed the nest 3 today with almost no issues ( apart from forgetting to tighten the 12V feed screws lol)
All test seem to have worked
Any chance of Y plan open therm nest video?
Hi there im was looking for problem solutions so i find your vídeos here, maybe you can help me, i buy a house dat have a new warming sistem and every time dat the boiler starts it dus a kind off explosion like a realy Strong bang but starts, more in de Summer off when the weather is warm outside because de radiators are off den it happens. Maybe you can help me.
Hi really like your videos.if you intend on using the stand for the nest and not the existing room stat.what do you have to do with the thermostat connections ?
waseem khaliq you need to disconnect existing connections at the wiring center and leave all else in place
Co w przypadku kiedy w programerze mam podlaczone tylko 5 kabli (brak nr1. HW OFF) a termostat jest radiowy i nie ma wyprowadzonych kabli do niego?
Pozdrawiam.
tomasos82 wtedy albo nowy kabel albo Nest na ‘nest stand’ i podlaczony do gniazdka. Jezeli nie masz hw off to nie jestes na y plan
@@UrbanPlumbers Dzieki za szybka odpowiedz. Mam 3 way valve, zbiornik wody i zbiorniki na strychu plus termostat radiowy z odbiornikiem ktory jest podlaczony albo raczej przecina sygnal do glownej skrzynki zasilajacej heating (Kabel zasilajacy -> skrzynka rozdzielajaca-> odbiornik radiowy -> skrzynka glowna). Wiec w sumie 3 skrzynki i duzo kabli :). Wydaje mi sie ze musze ten odbiornik wymontowac i spiac kable zasilajace bezposrednio do skrzynki. Braku HW off nie umiem wyjasnic...wszystko dziala poprawnie.
Great video, great help. However I only have one brown wire from the control panel? Where should I put the grey and black?
no idea - colours tell me nothing, as they could be wired in diffrent ways
Hi, great video. I've installed nest from a honeywell 42005748 junction box which was connected to LP522 drayton programmer. Hot water is working fine but heating is not. The wire for CH on which was connected to the old programmer i have in terminal 3 on the nest. It does not appear however to switch the 3 port valve to heating and not hot water, so boiler does not fire when heating is called from nest, but if i call for hot water then the boiler fires and heats tank for hot water only. I have all the jumps as per instructions but wondering if i've connected the wrong wire from the junction box for switching the 3 port valve so that it feeds the radiators?
Were ever able to fix this? I have bit similar issue. My Heating works. Also hot water also works in a way. When you call Hot water only the valve stuck in the middle so I do get heating as well.
Excellent, bit I have a question.... assuming you dont want to put the nest at the site of the old thermostat, what should we do? Just twist the 2 wires together???
Remove the wires all together is probably best