- TL;DR
- This is my old thermostat and I'm trying to connect to a new D2 model but not sure with there being 4 wires. Wasnt expecting a yellow wire??
Discuss Wiring a new D2 thermostat? in the Central Heating Systems area at ElectriciansForums.net
Red A
Yellow B
Blue (neutral) not required in the new thermostat.
The old thermostat has an accelerator to improve accuracy, which needed a neutral conductor.
The new thermostat does not have this feature.
Connect the blue into a connector block and tuck it out of the way.
So A would be red, B would be yellow, and would I put the earth in C or just snip that off as it wouldn't be needed?.Red A
Yellow B
Blue (neutral) not required in the new thermostat.
The old thermostat has an accelerator to improve accuracy, which needed a neutral conductor.
The new thermostat does not have this feature.
Connect the blue into a connector block and tuck it out of the way.
Red A
Yellow B
Blue (neutral) not required in the new thermostat.
The old thermostat has an accelerator to improve accuracy, which needed a neutral conductor.
The new thermostat does not have this feature.
Connect the blue into a connector block and tuck it out of the way.
So A would be red, B would be yellow, and would I put the earth in C or just snip that off as it wouldn't be needed?.Red A
Yellow B
Blue (neutral) not required in the new thermostat.
The old thermostat has an accelerator to improve accuracy, which needed a neutral conductor.
The new thermostat does not have this feature.
Connect the blue into a connector block and tuck it out of the way.
Ok about the earth and a definite ok regarding C.Don't snip the earth, as it may be needed in future. It should be sleeved green and yellow and terminated in a connector block.
DO NOT connect anything into C, unless you want to hear a bang!
both wired as stated but not getting no response from the boiler!. Turned the thermostat up to 24 degrees just to make sure and still nothing.Red A
Yellow B
Blue (neutral) not required in the new thermostat.
The old thermostat has an accelerator to improve accuracy, which needed a neutral conductor.
The new thermostat does not have this feature.
Connect the blue into a connector block and tuck it out of the way.
Reply to Wiring a new D2 thermostat? in the Central Heating Systems area at ElectriciansForums.net
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