Mount Wallplate; Connect Wires - Honeywell RTHL3550 Owner's Manual

5 Mount Wallplate

Mount the new wallplate using the included screws and anchors.
Drill 3/16-in. holes for drywall
Drill 3/32-in. holes for plaster

6 Connect Wires

Simply match wire labels.
If labels do not match letters on the thermostat, check "Alternate Wiring
(Conventional Systems)" on page 6 and connect to terminal as shown (see
notes, below).
Y2 W2 G W
We are here to help. Call 1-800-468-1502 for wiring assistance.
Y R Rc
MCR31270A
5
M28345
Remove metal
jumper if you
have both and
R
wires.
Rc