Honeywell RTH3100C Owner's Manual - Page 9

Label wires and remove old wallplate - thermostat wiring

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RTH3100C Label wires and remove old wallplate Use a screwdriver to disconnect wires one by one. As you disconnect each wire, wrap it with the label matching the letter on your old thermostat. (Adhesive labels are supplied in your thermostat package.) Remove the old wallplate only after all wires are labeled. Be careful not to let loose wires fall into the wall opening. Wrap supplied labels securely around each wire. Do not let wires fall into wall opening! E IGNORE WIRE COLORS: Use only letter designations to identify wire types.  Aux O

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RTH3100C
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Use a screwdriver to disconnect wires one by one. As you disconnect each wire,
wrap it with the label matching the letter on your old thermostat. (Adhesive labels are
supplied in your thermostat package.)
Remove the old wallplate only after all wires are labeled. Be careful not to let loose
wires fall into the wall opening.
Label wires and remove old wallplate
Wrap supplied labels securely around each wire.
Do not
let wires fall into wall opening!
E
O
Aux
IGNORE WIRE COLORS:
Use only letter designations to identify wire types.