Nest with boilermate 2000

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Nest with boilermate 2000

Post  Spar382 on Thu Jul 27, 2017 3:31 am

Hi, I want to use a nest thermostat with my boilermate 2000.
I'm kind of clueless how to get it working though, I assume I just swop the old basic dial thermostat over to the nest one which is easy enough. By swopping over wires to nest it's on connection 9, 10, 11

but what do I do with the heatlink with a boilermate system?
Is it connected to the boiler or to the boilermate upstairs or not used at all?

Any help appreciated

Wiring diagram:h**ps://ibb.co/fWrf0Q

Spar382

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Re: Nest with boilermate 2000

Post  scorp on Thu Jul 27, 2017 2:24 pm

HeatLink N -> BoilerMate N (terminal 9)
HeatLink L -> BoilerMate L (terminal 10)

HeatLink 1 -> Not Connected
HeatLink 2 -> HeatLink L (small jumper cable)
HeatLink 3 -> BoilerMate SL (terminal 11)

HeatLink T1 -> Original Thermostat N wiring
HeatLink T2 -> Original Thermostat L wiring

http://gledhill-repairs.forumotion.net/t1802-nest-thermostat-with-boilermate-2000

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Re: Nest with boilermate 2000

Post  Spar382 on Thu Jul 27, 2017 3:13 pm

Thanks, I havent got the nest yet so a little hard to figure it out (the guy we bought house from said he tried to put one in and couldnt).
So from what I can gather the heatlink is installed upstairs next to boilermate and connected as you listed directly to the boilermate, nest thermostat installed where old one was and the wires from that that went into boilermate now go into the T1 and T2 connections on the heatlink?

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Re: Nest with boilermate 2000

Post  scorp on Thu Jul 27, 2017 3:48 pm

Correct. Main thing to remember that T1 and T2 are 12V. Don't mix it with anything else. Those two wires must be disconnected from BM, connected to T1/T2 on heatlink and on other side will be connected to nest. It is 12V supply to nest from heatlink.
See Page 13 here http://www.plumbcity.com/wp-content/uploads/2016/02/Nest-Thermostat-Installation-Guide-UK.pdf

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Re: Nest with boilermate 2000

Post  Spar382 on Fri Jul 28, 2017 5:12 am

Great, thanks for help

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