Dunkirk Furnace Broiler gas valve not energized?

[BullisOk]

Hi

Hopefully someone can help...
My Gas boilers furnace Main Burners wont fire.
The Cas Valve burner light is OUT>


I found a Bird caught in the Vent Damper and the Damper was caught up blocking the vent. I removed the bird and I'm thinking the Blocked Vent Shut off tripped. I think I have found the Flame Roolout, but not sure of the vent shut off? On the diagram it looks like they are right in line. I have found two spots which look to be saftey cut offs. I changed the thurmal couple switch because I had a spare and didn't make a difference. Do you have a pic of the blocked bent safety shut off?

I opened the vent and put in manual status to try and fire furnace.
Everything else looks OK.

Any help would be appreciated.

Thanks Lee

[Grady]

That switch is usually on or just below the draft hood. Which model Dunkirk do you have?