Honeywell RTHL3550 - Page 6

6
If wires will be connected to both R and Rc terminals, remove metal
jumper.
Do not use C, X or B. Wrap bare end of wire with electrical tape.
If E and Aux do not each have a wire connected, use a small piece of wire to
connect them to each other.
MCR31274B
Y2C
Y2 W2 GW YR
R
4M
V
RHY1
H
W1
B
XF
RYW
GR
c
Rc
W2
Wiring—Heat Pump
MCR31276A
Aux
O/BLG
Y
G
O
YR
R
Rc
Aux
E
Alternate Wiring (Conventional Systems)
If labels do not match terminals, connect wires as shown here (see notes,
below).