Honeywell RTH9585 User Manual page 39

Important! Using the G wire assumes there are wires at the thermostat connected toG, Y and Con
your equipment. If this is not the case, please contact Customer Support.
1 Open the heating/cooling equipment that connects to
your thermostat.
2 Find the wiring terminals G, Y, C on the furnace or air-
handler control board.
3 Unscrew the G terminal and move that wire to the C
terminal. Be sure the other wire(s) connected to the C
terminal stay securely connected when you re-tighten
the C terminal.
4 Use the included 18-gauge jumper wire to connect the
Y terminal to the G terminal. Be sure the other wire(s)
connected to theY terminal stay securely connected as
you tighten the jumper wire.
5 Close the heating/cooling equipment.
6 Relabel the G wire as the C wire at the thermostat.
7 Complete the installation following the steps in the
instruction manual or quick start guide.
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