Honeywell VR8345M Manual page 16

VR8345M
OPERATION
Fig. 14—Direct Ignition/Intermittent Pilot Applications: Position of gas control components during burner on
cycle.
GAS
CONTROL
INLET
NOTE: SECOND AUTOMATIC VALVE OPERATOR AND
SERVO PRESSURE REGULATOR SHOWN OUTSIDE
GAS CONTROL FOR EASE IN TRACING GAS FLOW.
Fig. 15—Direct Ignition/Intermittent Pilot Applications: Position of gas control components during thermostat
off cycle.
GAS
CONTROL
INLET
NOTE: SECOND AUTOMATIC VALVE OPERATOR AND
SERVO PRESSURE REGULATOR SHOWN OUTSIDE
GAS CONTROL FOR EASE IN TRACING GAS FLOW.
68-0160
CONTROL
KNOB
FIRST
AUTOMATIC
VALVE
SOLENOID
FIRST AUTOMATIC VALVE
SLOW-OPENING GAS CONTROL HAS A GAS FLOW RESTRICTOR IN THIS PASSAGE.
1
CONTROL
KNOB
FIRST
AUTOMATIC
VALVE
SOLENOID
FIRST AUTOMATIC VALVE
1 SLOW-OPENING GAS CONTROL HAS A GAS FLOW RESTRICTOR IN THIS PASSAGE.
SECOND AUTOMATIC SECOND
VALVE OPERATOR AUTOMATIC
OPERATOR
SOLENOID
SECOND
AUTOMATIC
OPERATOR
VALVE DISC
1
SECOND AUTOMATIC
VALVE DIAPHRAGM
SECOND AUTOMATIC SECOND
VALVE OPERATOR AUTOMATIC
OPERATOR
SOLENOID
SECOND
AUTOMATIC
OPERATOR
VALVE DISC
1
SECOND AUTOMATIC
VALVE DIAPHRAGM
16
SERVO PRESSURE
REGULATOR
PILOT
GAS
OUTLET
GAS
CONTROL
OUTLET
M9125
SERVO PRESSURE
REGULATOR
PILOT
GAS
OUTLET
GAS
CONTROL
OUTLET
M9126