i'm replacing my Thermostat with a Honeywell Digital, and found that at the back there are 1 Red, 1 Blue, 1 Yellow and an earth. On the new digi thermostat it only shows where the Live, and Neutral plugs in and nothing for the yellow, nor it hasn't got an earth connection. i am replacing a dial honeywell thermostat with a honeywell dt200 thermostat and have a potterton gold combi boiler.
honeywell dt200 thermostat
- Thread starter djfayers
- Start date
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Click this link for DT200 Instructions
You will see that the DT200 does not need a Neutral or an earth so these wires can be wrapped (separately) in insulating tape and hidden behind the stat.
That leaves two wires: Red connects to terminal A; Yellow to terminal B.
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