PORTABLE SPACE HEATER
Types I and II portable space heaters are designed
to heat tents. The heater assembly consists of
essentially a heater body (top and bottom), adapter ring,
grate or liquid fuel burner assembly, and air
conditioning-heating pipe sections. (See figs. 2-2 and
Type I heaters may be operated with wood or coal.
Type II heaters operate with diesel oil, light fuel oil, or
gasoline. The heat output is measured in British
thermal units (Btu). The fuel consumption rates are as
Type I (coal) 1/4 ton per week
Heat output (normal) 35,000 Btu per hour
(maximum) 45,000 Btu per hour
Type II (gasoline or oil) 5 gallons for 10 to 30 hours
Before you place the heater in service, perform the
Inspect the entire heater assembly for signs of
Figure 2-2.Space heater (Type I).
Inspect the heater to be sure it is assembled
properly, secure, clean, adjusted correctly, and
4. Areas surrounding the stove should be void of
combustibles at any point closer than 4 feet on a
horizontal plane from the floor to the ceiling of the tent
or building. Necessary material may be secured locally
upon approval of the local commander.
Correct deficiencies within the scope of
organizational maintenance before placing the heater in
Perform daily preventive maintenance services.
To assemble and set up the Type I space heater
components, refer to figure 2-4 and proceed as follows:
Setting Up the Heater
Place the heater base on the ground or floor of the
tent. In tents with wooden floors, the base should be set
in a sandbox or on sheeting that is designed to protect
the floor from heat. In an emergency, a pile of stones or
brickbats may be used. The sandbox must meet the
1. Assemble the grate.
2. Place the adapter ring on top of the base. Level
the heater base by sight.
3. Insert the grate assembly in the adapter ring with
the shaker catch facing the ash door and the draw grate
on the bottom.
1. It must be no smaller than 40 inches long by 28
inches wide by 4 inches high. Use 2- by 4-inch lumber
for the framework.
4. Place the top of the space heater on the adapter
2. It must have
a sheet metal bottom to act as an
5. Assemble the air-conditioning smoke pipe as
3. The stove should be placed in the center of the
box with a minimum of 3 1/2 inches of sand between the
bottom of the stove and the metal insulation shield.
a. Join the formed edges of a curved sheet of
metal to form a cylindrical pipe.