Wiring—Conventional System - Honeywell RTHL3550 Quick Installation Manual

Wiring—Conventional System
If labels do not match letters on the thermostat, check
the chart below and connect to terminal as shown here
(see notes, below).
C
X
B
If wires will be connected to both R and Rc
terminals, remove metal jumper (see page 6).
Do not use C, X or B. Wrap bare end of wire
with electrical tape.
Y2 W2
G
F
Y2 W2 G
23
W Y
W1 Y1
H M
W Y
69-2584ES—01
RTHL3550
R Rc
RH R
4
V
R Rc
MCR31274A