I have an existing earlier model of this programmable thermostat which is conneced to the CH system by a two wire mains connection.
Can the CentaurPlus C27 be connected in the same way as it indicates a five not two wire connection?
This is not a thermostat, its a 2 channel programmer for controlling your hot water and heating at independent times of the day, and as such, it will require at least 3, 4, or 5 wires connected to operate.
Look instead at product 12157 for the 2 wire programmable thermostat.
Answered by: SparkyAH
Date published: 2020-03-04