Hi,
Im replacing my old HoneyWell T40 with a Honeywell CMT907A Battery powered thermostat. The T40 has 4 wires (Earth, live and two neutral from what i can make out) where the CMT907A only needs two.
Am i presuming correctly that I have to block off the Earth and the Neutral and connect just the live and the neutral that has the rectangle symbol in the diagram.
Please see attached pic, T40 on the Left and the 907A on the right.
Im going to move cable 1 from the T40 to A on the 907A
Im going to move cable 3 from the T40 to B on the 907A
Then isolate/Block off the Earth and 2 from the T40
Thanks in advance, Lee
Im replacing my old HoneyWell T40 with a Honeywell CMT907A Battery powered thermostat. The T40 has 4 wires (Earth, live and two neutral from what i can make out) where the CMT907A only needs two.
Am i presuming correctly that I have to block off the Earth and the Neutral and connect just the live and the neutral that has the rectangle symbol in the diagram.
Please see attached pic, T40 on the Left and the 907A on the right.
Im going to move cable 1 from the T40 to A on the 907A
Im going to move cable 3 from the T40 to B on the 907A
Then isolate/Block off the Earth and 2 from the T40
Thanks in advance, Lee