GE PROGRAMMABLE THERMOSTAT Installation Instructions Manual page 12

Add a wire for 4 wires System
Installer will need to keep the jumper wire to short RC and RH
terminals. The connection is shown below:
THERMOSTAT
R
C
D3
Y
1N4007T
W D4
1N4007T
G
Add a wire for 5 wires System
Installer will need to remove the jumper wire in RC and RH
terminals. The connection is shown below:
THERMOSTAT
RC
RH
C
D3
Y
1N4007T
W D 4
1N4007T
G
Add a wire for 4 wires system
Diode pair
Add a wire for 5 wires system
Dlode pair
Jumper wire
Jumper wire
Jumper wire
12
ACCESSORY
EQUIP
STAT
RC RC
RH RH
C C
Y
W
W
G
ACCESSORY
EQUIP
STAT
RC
RH
C
Y
W
G
EQUIPMENT
RC
RH R
C C
Y Y
Y
W W
G G
G
EQUIPMENT
RC RC
RC
RH RH
RH
C C
C
Y Y
Y
W W
W
G G
G