Honeywell RTH9580 Wi-Fi User Manual page 11

Installing your thermostat
3 Label the wires.
Use the supplied sticky tags
to label each wire as you
disconnect it. Label wires
according to the old thermostat
terminal designations, not by
wire color.
Note:
If no tag matches a
terminal designation, write the
appropriate letter on a blank
sticky tag.
4 Remove wallplate.
Remove the old wallplate from
the wall after all wires have been
labeled and disconnected.
Note: Wrap the wires around
a pencil to prevent them from
falling back into the wall.
C
9
Sticky tag
Blank tags
Terminal
designation
MCR31537
69-2809EF—03