TM 10-4500-200-13
Length:
covers the top of the burner compartment. The
Burner . . . . . . . . . . . . . . . . . . . .12 3/8 inches
vaporizer plate of the downdraft burner consists of
Heater only . . . . . . . . . . . . . . . . . . . . . . 30 inches
a 3/32 inch layer of absorbent asbestos, sandwiched
Heater with fuel tank . . . . . . .33 3/4 inches
between tw'o perforated ovals of corrosion-resistant
Heater with pipe sections . . . . . .9 feet 8 inches
steel. The fuel tank is held in place by a cradle and
Weight:
strap assembly. The fuel tank is equipped with a
Complete . . . . . . . . . . . . . . . . . . . . . 44pounds
Crated . . . . . . . . . . . . . . . . . . . . . . .. pounds
.60
valve assembly, a vent plug, and a filler plug, all
located on the same end of the cylindrical tank. The
heater is equipped with an 8-foot air-conditioning
Both immersion heater models are essentially the
pipe that consists of four sections of pipe (fig. 4-1).
same in construction and for application. However,
The perforated cylinder on the end of the lighter is
the primary difference lies in the method in which
filled with absorbent asbestos.
each heater is preheated and ignited. To light the
b. Fuel. The immersion heater utilizes leaded or
immersion heater, FSN 4540-266-6835, a lighter
white gas as its normal fuel.
torch must be manually inserted first in the flue
compartment and then into the burner compart-
ment. Model 447-2EX, immersion heater provides
Capacities
a lighter cup which is mechanically pivoted inside
Fuel tank . . . . . . . . . . . . . . . . 2.2 gallons
the burner compartment. The lighter cup pivot arm
Heatoutput. . . . . . . . . . . . . . . . . . . . . . . 35,000 British Thermal
Units
forms a handle and extends outside the burner
Cubage, crated . . . . . . . . . . . . . . . . . . . 5.6 cubic feet
compartment. The operator need only to move the
Diameter:
handle to pass the lighter cup from flue compart-
Combustion chamber . . . . . . . . . . . . . . . . . . . .15 inches
ment to burner compartment.
P i p e. . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 4 inches
Section II. INSTALLATION AND OPERATING INSTRUCTIONS
b. Setting Up.
(1) Refer to figure 4-2, and assemble the im-
a. Inspection and Servicing the Equipment.
mersion heater.
(1) Inspection.
NOTE
(a) Inspect the entire heater assembly for
Use V jaw wrench FSN 5120-595-9193 to
signs of physical damage.
tighten the pipe connections.
(b) Inspect the heater to be sure that it is
(2) Refer to figure 4-2 and install the fuel tank
properly assembled, secure, clean, correctly ad-
in the cradle strap assembly, and secure it with the
justed, and for evidence of fuel leaks.
wingnuts (or chained knurled nuts) provided.
(c) Correct deficiencies within the scope of
CAUTION
organizational maintenance before placing the
Do not attempt to install the heater with a
heater in service.
full tank of fuel because the balance will
(2) Servicing. Perform the preventive mainte-
be destroyed and cause the heater to fall.
nance services (para 4-18).
(3) Refer to figure 4-2, and install the burner
4-5. Installation of Separately Packaged
in the burner compartment with the vaporizer plate
Components
end facing up.
(4) Refer to figure 4-2, attach the heater to the
No separately packaged items are shipped with the
can and tighten the locking screws or thumbscrews.
heater.
(5) Refer to figure 4-2, and attach the four 2-
foot sections of air-conditioning-heating pipe to the
collar of the heater. Fill the can with water to within
a. Location. Select a site that is level and as shel-
6 inches below the collar assembly of the heater.
tered as possible.
