Control M6004, Instruction Manual

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7
Installation
Wiring
NOTE: Please note the wire colours and terminal letters they are attached to on the old thermostat.
WIRING COLOURS ARE NOT ALWAYS STANDARDIZED, IT IS VERY IMPORTANT TO LABEL ALL
WIRES ACCORDING TO THE LETTER DESIGNATION ON YOUR OLD THERMOSTAT.
(The wires are usually designated ‘W’, ‘Y’, ‘G’, ‘RH’, ‘RC’, ‘B’, ‘O’ or humidistat wires)
• Disconnect wires from old thermostat or sub-base.
• As you disconnect each wire, use masking tape to label it with the old terminal designation.
• Take care not to let the wires fall back into the wall or let the ends of the wires touch one another.
• If there is an extra wire that is not connected to your old thermostat, then you won’t need to connect it to
the new thermostat.