Swap Honeywell Thermostat for Digital one

[Tsmedley]

Hi, I've purchased a new digital thermostat to replace my old one.

The wiring is slightly different, can someone advise which wires I should connect to which terminals in the new thermostat?

Old stat

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• Tsmedley
• 18 May 2015
• 1

Untitled

• Tsmedley
• 18 May 2015
• 1

New wiring diagram

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• Tsmedley
• 18 May 2015
• 1

Thanks in advance![/img]

 

[denso13]

1 to A, 3 to B and terminate the other two safely (separately in two pieces of terminal block).