Honeywell RTH2410 Quick Installation Manual page 10

Quick Installation Guide
Connect Wires: Heat Pump
5
Systems with Auxiliary/Backup
Heat (alternate wiring)
4
7
OR
OR
X F
X2
1 LEAVE JUMPER IN PLACE, CONNECTING R AND RC.
2
THIS THERMOSTAT CANNOT BE USED IF YOUR OLD THERMOSTAT
HAD ANY TWO OF THE FOLLOWING WIRES R, RC, V, OR VR.
3
DO NOT USE C OR X WIRE. DO NOT USE B WIRE IF YOU ALREADY
HAVE O WIRE. WRAP BARE END OF WIRE WITH ELECTRICAL TAPE.
DO NOT USE L WIRE. WRAP BARE END OF WIRE WITH ELECTRICAL
4
TAPE.
5 IF YOUR OLD THERMOSTAT HAD SEPARATE O AND B WIRES, WRAP
THE B WIRE IN ELECTRICAL TAPE AND DO NOT CONNECT.
6
IF YOUR OLD THERMOSTAT HAD Y1, W1 AND W2 WIRES, STOP NOW
AND CONTACT A QUALIFIED CONTRACTOR FOR HELP.
IF YOUR OLD THERMOSTAT HAD E AND AUX WIRES (OR
7
ALTERNATE WIRES), CONNECT BOTH WIRES TO AUX TERMINAL.
69-2421ES—03
3 5
OR
OR
X
B
B
H
O/B Y
2
OR
OR
Y1
RC
M
VR
1
RC R
8
6
OR
F
V
G W/AUX
M32151A
7
OR
W
W1
W2