To install the inlet or outlet duct (1) on the heater, push the duct end ring (2) into the duct opening (3) on
the heater so that the slots (4) on the end ring (2) engage with the pins (5) protruding from the inside of
the duct opening (3). Rotate the end ring (2) counterclockwise and pull until it locks in place. The air flow
direction of the inlet and outlet ducts are tagged on the duct. They are oriented opposite to one another
and can only be connected to the heater duct collars in one way. Repeat for second duct.
Install the opposite ends of the ducts into the duct tunnels on the shelter.
Secure the tent duct tunnel ties to seal the ducts in the tent duct tunnels.