Hive, please help with installation :/ Changing Honeywell cm707 to hive thermostat.

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Good afternoon,
I need help how to change honeywell cm707 to hive termostat.
I bought HIVE Active Heating but I have no idea how to connect it.
I have a Logic 35 combi boiler.
Can anyone help me :unsure:

 

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Brown to live, black to neutral, link brown live to 1 common, grey to 3 heating normally open.

Then you will need gas engineer to alter boiler connections.
 
I can not do it without an engineer?
so a better option is to return hive to the store and buying a new one with professional instalation :(
 
NO DO NOT connect grey to 3 it will go BANG if the grey wire is connected to neutral at the other end.
Black should go to 3 and grey to N, brown to L with a link to 1. No need for a gas engineer.
If the Hive doesn't work then the grey is probably not connected at the other end, post back for more help.
 
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Yeah, Unfortunately if your not gas safe registered your not allowed to even remove the boiler case.

Is a Combi so grey won't be connected... Existing stat is a normally open switch
 
Johnmdc like that?
yellow-green should be not connected?
Sorry for my english, I still learn ;)
 

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Yes that is right, the yellow/green (earth) goes under the terminal marked earth tether.
Your English is good.
 

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