b. The immersion heater utilizes leaded or white
through the flue compartment. A spacer plate has
gas as its normal fuel.
been tack welded to the outside surface of the stack,
around the hole. Aswingdraft gate with supporting
stud andnut has been installed over the hole. In the
modification of standard models, the vertical, rec-
Capacities:
Fuel tank . . . . . . . . . . . . . . . . . . .2.2 gallons
tangular piece of sheet metal which serves asadraft
Heat output. . . . . . . . . . . .35,000 British Thermal
gate has had a 1/4 inch, 20-NCT hole drilled through
Units
it, 5-1/16 inches from the bottom and in the horizon-
Cubage, crated . . . . . . . . . . . . . . . .5.6 cubic feet
tal center of the gate. The drilled gate has been in-
Diameter:
stalled in a closed position within the stack assembly
Combustion chamber . . . . . . . . 13 1/2 inches
and secured with a 1/4 inch, 20-NC round head screw
Cover . . . . . . . . . . . . . . . . . . . . . .17-5/16 inches
Stovepipe . . . . . . . . . . . . . . . . . . .4 inches
and nut. Since the partition between the flue com-
Length:
partments in standard models does not extend all the
Burner. . . . . . . . . . . . . . . . . .l2-3/8 inches
way to the bottom, the nut will be in contact with the
Heateronly . . . . . . . . . . . . . . . . .33-l/4 inches
bottom of the partition. The draft gate is permanent-
Heater with fuel tank . . . . . . . .37inches
ly fixed and extends to the bottom of the heater, and
Heater with pipesections . . . ..l0feet
Weight:
if the heater is inverted, the gate will not slip in its
Complete . . . . . . . . . . . . . . . . . . .63 pounds
slot. The cast iron hoods, and hoods having obsolete
Crated . . . . . . . . . . . . . . . . . . . . .100 pounds
instruction plates, have been replaced with new hoods
with hinge pins and retaining cotter pins. The burner
of the modified standard tank trailer heater is identi-
cal to the burner of the current production model
The modified standard model tank heater is similar
tank trailer heater.
in shape and size to the current production model.
In installing the pivot-type draft gate on standard
models, a hole 1 1/4 inches in diameter has been cut
Section II. INSTALLATION AND OPERATING INSTRUCTION
(1) Refer to figure 5-2 and assemble the immer-
sion heater.
a. Inspecting and Servicing the Equipment.
(1) Inspection.
Note. Use "V'' jaw wrench FSN 5120-595-9193 to tighten
pipe fittings.
(a) Inspect the entire heater assembly for signs
of physical damage.
(2) Refer to figure 5-2 and install burner in burn
(b) Inspect heater to be sure that it is properly
er compartment with vaporizer plate end facing up.
assembled, secure, clean, correctly adjusted and for
(3) Remove trailer tank cover, leaving hinged
evidence of fuel leaks.
crossbar in place.
(c) Correct deficiencies within the scope of
(4) Check heater to be sure there is no fuel in the
organizational maintenance before placing the heater
combustion chamber. Raise crossbar and install
in service.
heater in tank opening.
(2) Servicing.
(5) Refer to figure 5-2 and lower crossbar into
(a) Perform the daily preventive maintenance
clevis on top of heater cover plate and engage wingnut
services (para 5-18).
and bolt assembly on tank with the slotted end of
(b) Perform the quarterly preventive main-
crossbar. Tighten wingnut to keep heater from float-
tenance services (para 5-18).
ing. Water level in tank should be 6 inches below
collar of heater assembly.
Caution: Do not attempt to install heater
Components
with a fill tank of fuel because the balance will
No separately packaged items are shipped with the
be destroyed and will cause the heater to fall.
heater.
(6) Refer to figure 5-2 and install fuel tank in
cradle strap assembly and secure it with wingnuts
(or chained knurled nuts provided).
a. Location. Select a site that is level and as shel-
(7) Refer to figure 5-2 and attach four 2-foot
tered as possible.
sections of air-conditioning-heating pipe to the
b. Setting Up.
heater.
