Another great video Alan, I got a hive last year, went on utube to see how to wire it all up, found it very easy to do, they are so good, can turn it on when you are on the way home on cold days so it's nice and warm when you get back
Thank you Allen for your very helpful Nest guidance... hope to show my support to you now by giving to your very worthy children's charity ... good luck John Jackson
very helpful Allen. I have the vitodens 100W, i have identified my terminals on the boiler. The Nest Heatlink appears to need 240v and then i run the other 2 wires back to 1 and L on the boiler. so 5 core cable. L,N &E from the boiler circuit into the heatlink. Remove the link between 1 and L back at the boiler and use the greay and black spare wire into 2&3 at heatlink end and 1 and L at boiler end. If i have understood you correctly. Thanks
*The first one **do7.pl/google** failed in finding my network after 2 weeks, but tech support was superb and the eventual exchange was stress free. Second one fine.*
Allen Hart I have a baxi 630 with a esi control fitted to the on off on the boiler.. But I am thinking of fitting a nest on opentherm, but when I take the wires out of the on off on the boiler into opentherm do I have to put a link cable back in the on off.. Thanks
Hi Alan nice video, so this 5 core you have on your video are they all going straight back into the boiler? Or are the live and neutral coming from a separate supply?
Thanks for the video. At 6" into the video, you are wiring into the № 2 and № 3 connections. But, as the manual for the 100 WB1B says "OpenTherm control compatible", can you not install on the OT1 and OT2 connectors instead?
No! You’d blow the boiler circuit board! OpenTherm protocol uses *low voltage* to modulate the boiler for room heating only. This vid by Allen is showing connection in an S plan system which does not modulate the boiler; it just uses on/off switching of boiler with HW &/or room heating decided by cylinder and room thermostats. For OpenTherm operation the system needs to be changed to an X plan, where the boiler is modulated by OpenTherm room thermostat for heating cycle but that is overridden by the cylinder thermostat when mains voltage switches the boiler for high temperature to heat the cylinder to avoid Legionella dangers (cylinder stat set to 60C).
Hi Allen, is there any how to manual available on how to efficiently use the nest and radiators, eg what level to set the nest temperature and radiators to heat only selected rooms (e.g. bedrooms during the night or leaving area during the day)
Great video, but why did the client request on/off type connection? I have a valiant combo which has a third party wireless thermostat which can vary the radiator output based upon the temperature requested. Could you please do a video to show how that could be upgraded to a nest.
So you replace the blue and brown ‘1 & L’ cable with a 5 core. Grey and black going in their place and then just take a feed off the L&N of the boiler itself?
With the thermostat itself I didnt have a stand for it and put it on the wall. Luckily for me the wall had an under stairs cupboard behind it with power socket in it for my tv that's on the same wall. All I did was drilled a hole thru it and plugged it up in the mains. Much better than hard wiring it. Well worth the 170 quid for it tho
I may be starting something here but for the money what is the best combi boiler. I know each hvac has a personal preference so it should start a keyboard punch up. Another good vid Allen, thanks.
Hi Allen, have you any videos on installing this on an oil boiler? Live in the country side in Ireland and I have an oil boiler and can't find much info on how to install this. Cheers
Thanks Allen nice work, I have question. Can you set up Nest to work on /off based on the water temperature and nothing else, for example if the water temp 60 degree or more stay off, otherwise go on until it reaches the desired temperature. to be honest i am looking for a switch to do that Nest or other vendors, smart / or dump switch :), doesn't mater . as long as it will work based on water temperature, not time schedules...etc..
Great video, I have got question, could we have separate independent main supply feed for a nest heat link and it doesn't need to be connected to combi boiler main supply spur, secondly could we have underfloor wiring centre switch wires connected to boiler switch wires in junction box just before the heat link boiler switch wires feed. Would that be possible both systems underfloor heating and nest can work both independently? As I have got a job where I have been asked to connect speedfit aura wiring centre for underfloor heating and nest for radiators, boiler make is Baxi platinum plus 40kw combi
I have a S plan 2 heating zones and hot water zone using 2 port honeywell valves, with 2 thermostats for heating, and 1 on hot water cylinder. I would like to fit a Nest thermostat on the downstairs heat zone only. I cannot remove any of the installed equipment, so can I override the present thermostat by turning that to minimum, and leave the programmer on constant heating? Any advice welcome.
Very informative video. However, I think the instructions say that you need to connect the ground wire to the heatlink only when you are using the T1 and T2 terminals to power the thermostat.
Hi Allen I am trying to connect the nest thermostat to a HIU. Trying to replace the existing Honeywell with the heat link. For some reason I can’t get the wires right. Any suggestions pls? Many thanks
Thank you for a very informative video installing a Nest thermostat on a Viesmann 111. May I ask have you installed a Nest onto a Viesmann 100 system boiler with an OSO cylinder?
Hi. I have got a Worcester Bosch green slave oil combi installed. Setup the nest but cannot get them to connect at all. Tried manually connecting still the same h71 error have you had these issues before?
I have a Honeywell CM927, I had a look at the wireless link wiring in there and it seems to have a NL connection and also another wire going to another L so NLL and then two wires going to A and B. What's the other live wire for?
Stupid Question but does the viessmann have a live and neutral out to supply the hub. I can see the incoming but where are you getting your power from.
Thanks for these videos mate. I'm confused, I have the same board in my boiler - but I can't see a mains out? How have you powered the heatlink? Where did you get those permanents from?
@@andrewbarker143 yes mate, are you stuck? I can send you a pic of how I done it if you want, but it was a case of the video just not showing it clearly, but there are terminals on the boiler's board to power the device, it's dead easy. Let me know if you need a hand.
@@danthealien8360 I have the Viessmann Vitodens 100. From the boiler, I’ve 1-L-N. I have conected the N and L to the Heatlink and bridged N to 2. Should I connect 3 on the Heatlink to 1 on the boiler? Thanks for your help. Really appreciate it!!
Thanks for the video, I have bought two of these to replace with my Honeywell programmed thermostats , but the issues I am having is the Honeywell thermostats are connected to two wires only , how can I replace these please? Many thanks
Hi, i had the 3rd gen nest in my old house with a oil heating. I have now moved to a new build with gas. My question is does the nest work better than the hive on gas?
Hi mate Got a job at the moment the customer as a problem with rads not working on the ground floor of her house, I have power flushed the sysem replace the pump with a larger pump, triedto balance out the system the rads are really warm for 3 or 4 days then they go cold again. when they go cold again the flow on the drop is baking hot and the return stone cold. Any thoughts would be appreciated.
Allen thank you very much for the great video, I'm replacing a faulty Heatlink with all the wires from the previous one into a new - I was wondering whether I could tackle this on my own (after disconnecting from the main electricity) and am still unsure, what do you recommend? I feel like google doesn't recommend you to do it on your own just to avoid possible electrical accidents?
hi this is useful thank you, but, the tricky part is connecting the heatlink to the boiler, and its not that clear to me exactly how that is done, so i will keep searching... Regards...
bought a Nest learning, and have been charging via USB for over 6 hours- still not operating. I get the “home” icon when booting up. Any idea how i can resolve?
Hi Allen, interesting video! How about doing one for a Viessman 100-w system boiler feeding an unvented cylinder but using an X plan and Nest to attain proper boiler modulation with OpenTherm? Seems like not many installers know how to do this and are just installing the old S plan, which is a great shame considering this boiler has one of the best modulation capabilities and the current drive to reduce carbon emissions and improve boiler efficiency. Viessman seem to push their four-pipe scheme for DHW priority, but that might not be suitable for every install, especially when replacing a boiler in an existing two-pipe system.
X plan was, I think, invented by Intergas to achieve Domestic Hot Water Priority at full heating temperature to avoid Legionella, but with OpenTherm modulation of the room heating for gas efficiency and comfort. Apparently just needs some appropriate wiring changes, a normally open water valve (instead of normally closed with S plan) on the heating circuit switched by a wire feed from the NC DHW valve, and an OpenTherm controller such as Nest 3rd generation. Apparently Tado has stopped doing HW control as nobody was implementing it in UK!!
Do you know if anywhere which stocks the USA version of the nest thermostat? Our ones are different and only do heating, American ones do heating and cooling. So anybody with a heat pump that does heating and cooling can’t use a nest.
Hi Alan, Thanks for great videos. You’ve helped chose my combi boiler mate. Thank you I have viessmann vitodens 100-w 30kw installed this week and now need to replace the old two zone thermostat as one of them has been faulty. Is the nest the right thermostat for my boiler? Do I need need twin pack or just buy two nests?
Hi Alan. I've watched your videos how to wire the nest thermostat i managed to wire mine to a standard boiler and it works fab. now the mrs wants one at her house but she has a gledhil open vented boiler system. any tips when trying to set this up?
I have a ideal combi boiler with the nest learning stat that’s wired to terminals 2 and 3 for volt free switching in the heatlink but I’m asking anyone who knows if it’s possible to use the 5 and 6 terminals that has the live link to make them 240v and still keep 2 and 3 volt free. It’s just that I’ve added ufh and need switched power for the pump. I haven’t installed a zone valve as I only want one stat. Is this possible without blowing the unit?
Hi Alan. Going off the subject a bit, am I right in thinking that you cant do flue gas analysis on a natural draught balanced flue. I am a trainee. Thanks Joe
If you buy a Nest stand, you don't get the backplate with it, so you must remove it from the wall again. Stupid if you have a fireplace and want to change the place for the Nest from the wall to the stand on a table during wintertime. To get a new backplate for your stand you have to buy a new Nest thermostat.
Crap video, one end of the cable you have grey and black into heatlink and the other end you have 2 different flexes 2 brown 2 blues. Show complete wired into the boiler where the grey and back cables go.
Another great video Alan, I got a hive last year, went on utube to see how to wire it all up, found it very easy to do, they are so good, can turn it on when you are on the way home on cold days so it's nice and warm when you get back
Thank you Allen for your very helpful Nest guidance... hope to show my support to you now by giving to your very worthy children's charity ... good luck John Jackson
Thank You
Hi Alan
Many thanks for your video, I'm changing a Honeywell thermostat over to a Nest wireless one .Your instructional video was a great help,
Great video, what is the range like between the link and the thermostat? my boiler is in the loft
very helpful Allen. I have the vitodens 100W, i have identified my terminals on the boiler. The Nest Heatlink appears to need 240v and then i run the other 2 wires back to 1 and L on the boiler.
so 5 core cable. L,N &E from the boiler circuit into the heatlink. Remove the link between 1 and L back at the boiler and use the greay and black spare wire into 2&3 at heatlink end and 1 and L at boiler end.
If i have understood you correctly. Thanks
Thanks for taking the time to put this video together 🙏🏻
*The first one **do7.pl/google** failed in finding my network after 2 weeks, but tech support was superb and the eventual exchange was stress free. Second one fine.*
Glad you like it!
Merry Christmas
Great video, I found it nice and simple. Thank you
Thank you very much Alen.
Nice video , what’s the benefit of installing on off thermostat on hot water boiler since off time save energy however waste energy for recovery time
Please do an updated video on your gas tool bag. What have you changed and what tools do you carry in it now? Cheers.
Allen Hart I have a baxi 630 with a esi control fitted to the on off on the boiler..
But I am thinking of fitting a nest on opentherm, but when I take the wires out of the on off on the boiler into opentherm do I have to put a link cable back in the on off..
Thanks
Hi Alan nice video, so this 5 core you have on your video are they all going straight back into the boiler? Or are the live and neutral coming from a separate supply?
Allen I am Having ☕ and watching your once again good content. I look forward to your videos thank you 👍👍
What type of video would you like next. Thanks
Hi Allen, if possible video on water softener system and maintain good water pressure from the water softener system .
Thank you
Thanks for the video. At 6" into the video, you are wiring into the № 2 and № 3 connections. But, as the manual for the 100 WB1B says "OpenTherm control compatible", can you not install on the OT1 and OT2 connectors instead?
No! You’d blow the boiler circuit board! OpenTherm protocol uses *low voltage* to modulate the boiler for room heating only. This vid by Allen is showing connection in an S plan system which does not modulate the boiler; it just uses on/off switching of boiler with HW &/or room heating decided by cylinder and room thermostats. For OpenTherm operation the system needs to be changed to an X plan, where the boiler is modulated by OpenTherm room thermostat for heating cycle but that is overridden by the cylinder thermostat when mains voltage switches the boiler for high temperature to heat the cylinder to avoid Legionella dangers (cylinder stat set to 60C).
Hi Allen, is there any how to manual available on how to efficiently use the nest and radiators, eg what level to set the nest temperature and radiators to heat only selected rooms (e.g. bedrooms during the night or leaving area during the day)
Great video. Do you also wire a separate 0.75 from the fuse spur into the boiler as well. Thanks.
Great video, but why did the client request on/off type connection? I have a valiant combo which has a third party wireless thermostat which can vary the radiator output based upon the temperature requested. Could you please do a video to show how that could be upgraded to a nest.
Imran Majid The person that requested the video asked for that. Thanks
So you replace the blue and brown ‘1 & L’ cable with a 5 core. Grey and black going in their place and then just take a feed off the L&N of the boiler itself?
have you got any contacts that could fit one of these nest thermostats for me in the birmingham area please alan
Excellent video, thanks for sharing.
Quick question, where did the live and neutral come from? Mains or mains out from within the boiler? Thanks.
Nest or Hive, fitted a few Hives but no Nests . Nice video Alan 👍🤙
can you do a hive install video?
Does the Boiler not have opentherm Bud?
Yeah it does
With the thermostat itself I didnt have a stand for it and put it on the wall. Luckily for me the wall had an under stairs cupboard behind it with power socket in it for my tv that's on the same wall. All I did was drilled a hole thru it and plugged it up in the mains. Much better than hard wiring it. Well worth the 170 quid for it tho
Thanks.
As always great video, what about connecting best using OpenTherm connection?
I may be starting something here but for the money what is the best combi boiler. I know each hvac has a personal preference so it should start a keyboard punch up. Another good vid Allen, thanks.
Baxi ar all round best for quality price and warranty. Simple solid loads in the box. You vant get more boiler.for the same money
Thank you for the guid :D it helped me :D
Thanks very much for your comment, please consider subscribing to support the channel 🙂
So the black and grey from the nest go back to where in the veismann ??
Did you ever get a response to this? I have a similar question. Alain can you please clarify?
Does the Nest thermostat when using the separate bracket have to be left plugged into the mains even though the switching signal is wireless ?
Better wiring guide than you get with a Hive, that's for sure.
Hi Allen, have you any videos on installing this on an oil boiler? Live in the country side in Ireland and I have an oil boiler and can't find much info on how to install this. Cheers
No I don’t do oil, sorry
@@AllenHart999 Cheers Allen....would you say that it would be straight forward enough?
Thanks Allen nice work, I have question. Can you set up Nest to work on /off based on the water temperature and nothing else, for example if the water temp 60 degree or more stay off, otherwise go on until it reaches the desired temperature. to be honest i am looking for a switch to do that Nest or other vendors, smart / or dump switch :), doesn't mater . as long as it will work based on water temperature, not time schedules...etc..
Thanks.
Great video, I have got question, could we have separate independent main supply feed for a nest heat link and it doesn't need to be connected to combi boiler main supply spur, secondly could we have underfloor wiring centre switch wires connected to boiler switch wires in junction box just before the heat link boiler switch wires feed. Would that be possible both systems underfloor heating and nest can work both independently? As I have got a job where I have been asked to connect speedfit aura wiring centre for underfloor heating and nest for radiators, boiler make is Baxi platinum plus 40kw combi
I have a S plan 2 heating zones and hot water zone using 2 port honeywell valves, with 2 thermostats for heating, and 1 on hot water cylinder. I would like to fit a Nest thermostat on the downstairs heat zone only.
I cannot remove any of the installed equipment, so can I override the present thermostat by turning that to minimum, and leave the programmer on constant heating?
Any advice welcome.
Very informative video. However, I think the instructions say that you need to connect the ground wire to the heatlink only when you are using the T1 and T2 terminals to power the thermostat.
does no harm wiring it, good practice if there's an earth core in the cable you're using.
Hi Allen
I am trying to connect the nest thermostat to a HIU. Trying to replace the existing Honeywell with the heat link. For some reason I can’t get the wires right. Any suggestions pls? Many thanks
No, sorry
Thank you for a very informative video installing a Nest thermostat on a Viesmann 111. May I ask have you installed a Nest onto a Viesmann 100 system boiler with an OSO cylinder?
Your better off with a Tado of Vs weather compensation
Hi. I have got a Worcester Bosch green slave oil combi installed. Setup the nest but cannot get them to connect at all. Tried manually connecting still the same h71 error have you had these issues before?
Brilliant, very useful video
I have a Honeywell CM927, I had a look at the wireless link wiring in there and it seems to have a NL connection and also another wire going to another L so NLL and then two wires going to A and B. What's the other live wire for?
Stupid Question but does the viessmann have a live and neutral out to supply the hub. I can see the incoming but where are you getting your power from.
Hi there Allen,
Many thx for your videos.
Have you ever try to wire an Open Therm Interface like this?
Thanks for these videos mate. I'm confused, I have the same board in my boiler - but I can't see a mains out? How have you powered the heatlink? Where did you get those permanents from?
Did you solve it?
@@andrewbarker143 yes mate, are you stuck? I can send you a pic of how I done it if you want, but it was a case of the video just not showing it clearly, but there are terminals on the boiler's board to power the device, it's dead easy. Let me know if you need a hand.
@@danthealien8360 Hey Dan. Please could you kindly share? I have the same problem.
@@mrklgnd there are 2 terminals on the boiler that power the heatlink. Which boiler do you have?
@@danthealien8360 I have the Viessmann Vitodens 100. From the boiler, I’ve 1-L-N. I have conected the N and L to the Heatlink and bridged N to 2. Should I connect 3 on the Heatlink to 1 on the boiler? Thanks for your help. Really appreciate it!!
Thanks for the video, I have bought two of these to replace with my Honeywell programmed thermostats , but the issues I am having is the Honeywell thermostats are connected to two wires only , how can I replace these please?
Many thanks
You need to show a hive install for ideal logic plus pre 2016 1000s asking on forums
Would you recommend an electrician or plumber to carry out Nest installation?
Hi, i had the 3rd gen nest in my old house with a oil heating. I have now moved to a new build with gas. My question is does the nest work better than the hive on gas?
Hi mate
Got a job at the moment the customer as a problem with rads not working on the ground floor of her house, I have power flushed the sysem replace the pump with a larger pump, triedto balance out the system the rads are really warm for 3 or 4 days then they go cold again. when they go cold again the flow on the drop is baking hot and the return stone cold.
Any thoughts would be appreciated.
hey allen good job , have you done one of these for a non combi setup where the hot water is tank based ?
Allen thank you very much for the great video, I'm replacing a faulty Heatlink with all the wires from the previous one into a new - I was wondering whether I could tackle this on my own (after disconnecting from the main electricity) and am still unsure, what do you recommend? I feel like google doesn't recommend you to do it on your own just to avoid possible electrical accidents?
Did you do it yourself?
you are a great man and i like your vide.......
hi this is useful thank you, but, the tricky part is connecting the heatlink to the boiler, and its not that clear to me exactly how that is done, so i will keep searching... Regards...
Have you seen one that constantly says h71 not linking to heat link
Yes, we had to renew it in the end.
Where best place buy them
Love your videos Allen 👍
Hi - is it ok to have the thermostat wall mounted and have it directly powered from socket via micro usb? (rather than a common wire)
That should be fine.
bought a Nest learning, and have been charging via USB for over 6 hours- still not operating. I get the “home” icon when booting up. Any idea how i can resolve?
Hi Allen, interesting video! How about doing one for a Viessman 100-w system boiler feeding an unvented cylinder but using an X plan and Nest to attain proper boiler modulation with OpenTherm? Seems like not many installers know how to do this and are just installing the old S plan, which is a great shame considering this boiler has one of the best modulation capabilities and the current drive to reduce carbon emissions and improve boiler efficiency. Viessman seem to push their four-pipe scheme for DHW priority, but that might not be suitable for every install, especially when replacing a boiler in an existing two-pipe system.
X plan was, I think, invented by Intergas to achieve Domestic Hot Water Priority at full heating temperature to avoid Legionella, but with OpenTherm modulation of the room heating for gas efficiency and comfort. Apparently just needs some appropriate wiring changes, a normally open water valve (instead of normally closed with S plan) on the heating circuit switched by a wire feed from the NC DHW valve, and an OpenTherm controller such as Nest 3rd generation. Apparently Tado has stopped doing HW control as nobody was implementing it in UK!!
Thanks mate great help
allen what do you charge for a install rothwell
Great video Alan I’ve learnt a lot from it. Can’t wait for the next one :)
Another awesome video, can you use Opentherm on a two nest as i got a zone down stairs and a zone upstairs? Thank you
Do you know if anywhere which stocks the USA version of the nest thermostat?
Our ones are different and only do heating, American ones do heating and cooling.
So anybody with a heat pump that does heating and cooling can’t use a nest.
Hi, where to connect L1 and N1 wires?
Hi Alan,
Thanks for great videos. You’ve helped chose my combi boiler mate. Thank you
I have viessmann vitodens 100-w 30kw installed this week and now need to replace the old two zone thermostat as one of them has been faulty.
Is the nest the right thermostat for my boiler? Do I need need twin pack or just buy two nests?
Glad to help
good video Allen , how is Danny getting on ?? has he found a job yet ??
Hi Alan. I've watched your videos how to wire the nest thermostat i managed to wire mine to a standard boiler and it works fab. now the mrs wants one at her house but she has a gledhil open vented boiler system. any tips when trying to set this up?
you need to check wiring with multi meter, Personally i would advise you call someone out. Thanks.
I have a ideal combi boiler with the nest learning stat that’s wired to terminals 2 and 3 for volt free switching in the heatlink but I’m asking anyone who knows if it’s possible to use the 5 and 6 terminals that has the live link to make them 240v and still keep 2 and 3 volt free. It’s just that I’ve added ufh and need switched power for the pump. I haven’t installed a zone valve as I only want one stat. Is this possible without blowing the unit?
Great video. What's your opinion on the boiler being mounted on a wood surface
It’s perfectly fine. That’s not an opinion. That’s as per the manufacturers instructions. Thanks
Great video Allen very helpful indeed 😊
Hi Alan. Going off the subject a bit, am I right in thinking that you cant do flue gas analysis on a natural draught balanced flue. I am a trainee. Thanks Joe
And most of the age will have asbestos rope seals
Hi
I have a baxi 100he and wondering if you any idea how to wire the nest thermostat e to it?
yes but i would need to do a video
@@AllenHart999 would you do that please?
It’s actually a main combi boiler 24he
Why is the brown wired to 1 and not L, but then goes into L in heatlink?
This implies on the video your running a live into a neutral which doesn’t sound good. Can you explain?
What’s better in your opinion hive or nest?
Like the Nest very much, I just wish they make their wire connections better. I find them a little fiddly
Was very helpful
will it work with a glowworm flexicom15hx
The receiver is realy fiddly to wire up. Were told best practice is to wire mains through controls rceiver but the holes are so tight on nest
where is brown sleeving?
Thank You
Helpful upload, but you could have shown the termination at the boiler end too.
Great video I fit hives but very similar
What's the best thermostat to use with your phone.
They're all pretty good. Hive is the best value for money at the moment. Once you're set up you never use the thermostat, so its aesthetics only.
@@lemmykilmister450 thanks Cam 👍🏻
Any of the Opentherm ones Hive is the worst of the bunch unless your boiler cannot take OT, Tado are very clever as is Evo home
really good video mate
Hello
Could you help me on video call to install mine ?
sorry no
When connecting up nest you don't need to have to have short leads on cable.
how to wiyah ah nist lernin fermostat
Thank your
Thanks Alan
Top video. Thank you
Must be cold in Yorkshire als got the body warmer on🥶🥶🥶
Very nice 👍🏼
Hi Alan. FYI, I was subscribed to your channel but for some reason was unsubscribed. Re-subscribed again obviously ; )
Welcome back!
yes, you are m8
Jesus that boilers bigger than you Allen !
If you buy a Nest stand, you don't get the backplate with it, so you must remove it from the wall again. Stupid if you have a fireplace and want to change the place for the Nest from the wall to the stand on a table during wintertime. To get a new backplate for your stand you have to buy a new Nest thermostat.
😍😍😍
The white is com??what about black is what🤔
Switch line
What's your name ?
Me names alllan aaaart.
last time I look for 70s porn woman and this came up lol
Doesn’t explain wiring at all
Crap video, one end of the cable you have grey and black into heatlink and the other end you have 2 different flexes 2 brown 2 blues. Show complete wired into the boiler where the grey and back cables go.