LOCATION AND USE OF CONTROLS AND INDICATORS - continued.
REAR and LEFT SIDE controls and indicators. (Refer to Figure 2-2)
EXTERNAL FUEL CONNECTION (1) used to connect the external fuel source to the ASH Unit.
INTERNAL TANK/EXTERNAL TANK (2) selector valve used to select either the internal fuel tank or the
external fuel source (if connected).
FUEL FILLER NECK and CAP (3) allows the internal fuel tank to be serviced with fuel when the cap is
FUEL GAGE (4) used to provide a continuous indication of the internal tank fuel level.
SIGHT GLASS (5) used to visually verify ignition or burner operation.
Figure 2-2. Rear and Left Side Controls and Indicators