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Replacement of old Honeywell thermostat with MC6 WIFI Thermostat

View the thread, titled "Replacement of old Honeywell thermostat with MC6 WIFI Thermostat" which is posted in Central Heating Forum on UK Plumbers Forums.

Zanderman

May 18, 2020

Hi Guys,

just wanted to get some advice on the wiring of the new MC6 thermostat?

I have attached a picture of what I am replacing and the wiring diagram of the new Thermostat. Please also see recorded voltage readings I have taken.

Current Honeywell Stat :=
1= 230v always (Red)
4= 230v
3= 0 (Yellow)
2= 0 (Blue)

When thermostat switched on
4=0
3=230v (Yellow)
2=0 (Blue)

So based on this the new wiring diagram would be?

Red = L ( Live)
Blue = N (Neutral)
Yellow = No ( Switched Live)

Please note I am not using it to control Hot water.

Do I need to jumper between L (Live) and COM?

Thanks for any advice and if you need any more information?

Thanks.

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