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mostat cable having more than four wires in the event of a
damaged or broken wire during installation.
Each communicating device in the system has a fourpin
connector. It is recommended that the following color code
be used when wiring each device:
DX+ — Green = Data A
DX- — Yellow = Data B
C — White = 24VAC (Com)
R — Red = 24VAC (Hot)
NOTE: TERMINAL MARKINGS FOR EACH COMMUNICAT
ING SYSTEM COMPONENT MAY NOT BE IN THE SAME
ORDER. IT IS NOT MANDATORY THAT THE ABOVE COL
OR CODE BE USED, BUT EACH CONNECTOR IN THE
SYSTEM MUST BE WIRED CONSISTENTLY.
A separate fourpin connector comes inside packaging and
should be used when connecting to furnace (or fan coil). En
sure connector is inserted properly into circuit board.
1. Turn off all power to equipment.
2. If an existing thermostat or control is being replaced:
a. Remove existing thermostat from wall.
b. Disconnect wires from existing thermostat.
c. Discard or recycle old thermostat.
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