Honeywell RTHL3550 Quick Installation Manual page 26

Advanced Installation Guide
Wiring—Heat Pump
Alternate wiring (for heat pumps only)
If labels do not match letters on the thermostat, check the
chart below and connect to terminal as shown here (see
notes, below).
C L
F
X
B
No
Conecte
Leave metal jumper in place, connecting R & Rc
terminals.
If your old thermostat had both V and VR wires, stop
now and contact a qualified contractor for help.
If your old thermostat had separate O and B
wires, wrap the B wire in electrical tape and do
not connect.
If your old thermostat had Y1, W1 and W2 wires,
stop now and contact a qualified contractor for
help.
If there were seperate wires on E and Aux, place
5 both wires in the Aux/E terminal.
Wiring complete, return to Step 7.
69-2697ES—03
4
5
G
E AUX
X W F
X2 W1
W2
Aux
L G
E
24
O
Y
H
Y1
B M
O/B Y
R Rc
V R
VR
R Rc
2
MSCR31275A