OPERATING THE FRESH AIR DAMPER
The fresh air damper (1) permits outside air to be introduced into the inlet air stream of the LCFH. This
makeup air allows fresh air to mix with the air that is being circulated inside the shelter.
To deploy the fresh air damper, lift the damper door and engage the spring loaded prop (2) into one of the
holes under the damper door.
To shutdown the LCFH, place the power switch (1) in the OFF position.
Once the heater has been instructed to shut down, the burner will be shut down followed by a burner
post-purge and cooldown. This is in turn followed by a burner fan shut down and a shutdown of the diesel
The entire shutdown process for the heater is estimated at three to five minutes but may vary depending
Once heater is shutdown and cool, open the engine access panel and turn the main battery shutdown
switch to the OFF position. Close the engine access door.
Once the heater has been successfully shut down, it should be maintained as outlined in work package
0010 00 entitled Preventive Maintenance Checks and Services.