Baxi 105e boiler query on installing a thermostant

[aky20]

Hi all,


I have a Baxi 105e boiler and have just purchases a hive active heating thermostat and a query on the wiring of the thermostat. Currently the 7 day digital clock is used to operate the boiler.

Will the clock remain in the boiler, I imagine yes and the wireless thermostat will control the time programme etc so the clock should be set to be permanently on?

Wiring - I understand that a 5 core wire should be fine, so the live and neutral are fine and and 1 on the (boiler diagram) is on and 2 is off, but what on earth is the common wire and where should this be located?

Many thanks
Aky

Boiler and thermostat wiring

• aky20
• 28 Oct 2013
• 1

The thermostat wiring is on the left and the boiler is on the right.