Johnson Controls G775 - Page 8

8 G

G77x Intermittent Pilot Ignition Controls Technical Bulletin
Vent Damper System
Thermostat
PLUG
GROUND
5
24 V
LED
THS 2
PV 1
MV 3
Transformer
Power
Supply
Vent Damper
Wiring Harness
Ignition Control
Limits in Thermostat
Line Only
Pilot Burner
Assembly
Integral
Igniter/Sensor
Main Burner
Ground
Pilot
Gas Supply
Pilot
Valve
Main
Valve
Figure 3: Wiring Diagram for Integral Spark/Sense
with Vent Damper
Thermostat
PLUG
GROUND
5
24 V
LED
THS 2
PV 1
MV 3
Transformer
Pilot Burner
Assembly
Integral
Igniter/Sensor
Main Burner
Ground
Pilot
Gas Supply
Ignition Control Limits in Thermostat
Line Only
Pilot
Valve
Main
Valve
Figure 4: Wiring Diagram for Integral Spark/Sense
without Vent Damper
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