RTH7400/RTH7500
9 69-2104ES—01
About your new thermostatConnect wires: Conventional Heating and Cooling
1. Match each labeled wire with
same letter on new thermostat.
2. Use a screwdriver to
loosen screws, insert wires
into hole, then tighten
screws.
3. Push any excess wire back
into the wall opening.
Remove metal jumper if you have both R and Rc wires.
Labels don’t match?
If labels do not match letters
on thermostat, see page 11.
M28070
W2
Y2
C
G
Y
W
RC
R
LABELED WIRES
SCREW
CONVENTIONAL
INSERT WIRES
THEN TIGHTEN SCREWS
WIRE HOLE
Y
G
R
W
CONVENTIONAL
Have a Heat Pump System?
See page 10.