Honeywell T6360B to Honeywell DT4

inthemix · 2024-10-30T23:35:36+0000

Hello I am trying to replace Honeywell T6360B with Honeywell DT4.

I have a combi boiler.

Please may I know if the Blue wire will have to be made safe before connecting the Red to A and Yellow to B? And presumably the earth wire is not required for DT4?

ericmark · 2024-10-31T02:01:56+0000

inthemix said:
Please may I know if the Blue wire will have to be made safe before connecting the Red to A and Yellow to B?

Yes, not required, looking at your diagram, but when I google DT4 I get

which shows it will need neutral. I seem to remember there was a DT4 thermostat looking some thing like this

which would be wired like you show, seems the name has been reused, so rather weary of giving an answer in case not what I think it is. This

I think is the old DT4 which is two wire only.

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Honeywell T6360B to Honeywell DT4

inthemix

ericmark

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