Vermont Casting DV360 Manuel D’Utilisation

39

SIT 822 Valve with Synetek Electronic Control

Operating Diagram

ON/OFF Switch Closed?

Safe Start Check On?

0 Sec Purge

Pilot Flame Sense OK?

ON/OFF Switch Opened?

Pilot and Main Valve OFF?

0 sec Post Purge?

Ignition Trial: 30 sec Spark ON 

Pilot Valve ON. Has Flame 

been Detected within 30 sec?

Spark Off. Main Valve ON. 

Pilot Flame Continuously 

Monitored

Heating Cycle Complete LED:

OFF

NO

YES

NO

NO

YES

5 sec Inter-Trial Delay

LED: Steady Flash?

Lockout: Flame detected out of sequence

Reset by interrupting ON/OFF switch or 

power for 10 sec

LED: 5 Flashes?

Reverse power cord polarity

LED: 2 Flashes?

Reset by interrupting ON/OFF 

switch for power for 10 sec

Pilot, Valve OFF, Spark OFF

Have three ignition trials been completed?

LED: 3 Flashes?

Lockout: Flame Loss 

Reset by interrupting ON/OFF switch or 

power for 10 sec

Main Valve OFF, Spark ON

Has flame been detected within 30 sec?

Have three pilot flame losses been 

detected?

NO

YES

NO

YES

YES

YES

YES