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INSTALLATION
M
V
2
T
R
G
N
D
T
H
M
V
1
L
2
F
P
L
1
H
S
1
THERMOSTAT OR
CONTROLLER
ALTERNATE
LIMIT
L1
(HOT)
L2
LIMIT
CONTROLLER
FLAME
PROBE
RED
ADAPTER
BLUE
HOT
SURFACE
IGNITER
MV2
MV1
BURNER
GROUND
H
S
2
TRANSFORMER
GAS
VALVE
M
P
C
External
Jumper
Figure 7. Typical Wiring for Hot Surface Ignition System
Figure 6. Typical Wiring for Proven/Intermittent Pilot System
THERMOSTAT
LIMIT
HOT
LINE VOLTAGE
120 VAC
NEUTRAL
COMMON (“C”)WR
25 VAC
H.V. LEAD
IGNITION
ELECTRODE
(PILOT)
SENSE
ELECTRODE
T
H
P
V
M
V
C
P
M
M
V
P
V
T
R
G
N
D
F
P
LINE VOLTAGE
LOW VOLTAGE
ALTERNATE
LIMIT
TRANSFORMER
THERMOSTAT OR
CONTROLLER
L1 (HOT)
L2
SPARK
PROBE
MV
(GND)
LIMIT
CONTROLLER
FLAME
GAS
VALVE
MV
VAL
TR
TH
GND
FLY
LEAD
SPARK
Burner Ground
FLAME
PROBE
(GND)
MPC
External
Jumper
Figure 8. Typical Wiring for Direct Spark Ignition System