SECTION II. EQUIPMENT DESCRIPTION
1-6. EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES
The immersion heater is a self contained unit used for heating water in a corrugated can. The construction is of sheet
steel and consists of a doughnut-shaped combustion chamber and two vertical pipes. The larger pipe houses the burner.
There is a partition in the combustion chamber located between the two pipes. When air enters the larger pipe and is
heated in the chamber, the combustion gases leave the heater through the smaller, or flue pipe. The burner compartment
houses an igniter cup assembly which is used to preheat the flue compartment and ignite the burner.
A hanger is welded to the heater and has two locking screws which clamp the corrugated can between two steel plates
securing the heater to the corrugated can. The square sleeve welded on the bottom of the fuel tank fits over the square
stud located above the locking screws.
The fuel tank is equipped with a valve assembly, vent cap, and a filler plug all located on the same end of the fuel tank
The heater is equipped with an 8-foot (2.4m) pipe, hereafter called a smokestack, consisting of four sections (Figure 1-1).
The immersion heater utilizes Combat Gas or MO GAS (leaded or unleaded) as normal fuel. See Appendix E, Section II,
Expendable Supplies and Materials List for authorized emergency fuels.
The immersion heater has two identification plates, one instruction plate, and one caution plate.
Fuel Tank Nameplate . The fuel tank nameplate is located on the end of the fuel tank opposite the filler plug. It
specifies fuel tank nomenclature and National Stock Number.
End Item Nameplate. The end item nameplate is located at the front of the heater on the welded steel plate that
joins the burner compartment with the flue compartment. It specifies end item nomenclature and National Stock Number.
Instruction Plate. The instruction plate is located on the hinged hood which covers the top of the burner
compartment. It gives instructions for operating the heater.
Caution Plate. The caution plate is located on the side of the fuel tank It gives caution information for lighting
procedure and for adjusting the fuel flow to the heater during operation.
1-7. LOCATION AND DESCRIPTION OF MAJOR COMPONENTS
FUEL SYSTEM. Consists of the fuel tank with the fuel valve, the fuel filler plug, and the fuel vent cap. All are located on
the same end of the tank. The fuel tank has a capacity of 2.2 gallons (8.33 liters).
HEATER BODY ASSEMBLY. Consists of the burner hood, igniter handle, burner compartment, combustion chamber,
flue compartment, mounting damps and locking screws.
SMOKESTACK ASSEMBLY. Consists of four separate smokestack sections with split rivets.
BURNER ASSEMBLY. Free standing device which rests in the base of the burner compartment.