L1
N
NEUTRAL
THERMOST
AT
NEUTRAL
V
A
LV
E
GR
OUND
HIGH VOLTAGE
N.O. PRESSURE
SWITCH
120VAC
BURNER
N
BK
W
W
R
BK
BK
O
G
BK
W
BK
BK
ELECTRODE
W
NEUTRAL
THERMOST
AT
NEUTRAL
V
A
LV
E
GR
OUND
HIGH VOLTAGE
BLOWER
MOTOR
L1 120VAC
N
PRESSURE
SWITCH
ELECTRODE
ASSEMBLY
BK
BK
BK
BK
R
W
O
W
G
W
BK
GAS VALVE
BK
W
8
DES3
Series
2.0
Installation • Wiring
Before field wiring this appliance - Check existing wiring; replace if necessary.
NOTE:
If any of the original wire supplied with the appliance must be replaced, it must be replaced with
wiring material having a temperature rating of at least 105°C
.
Figure 2.2 • Internal Wiring Diagrams
A. DES3 Ladder Diagram
B. DES3 Block Diagram