TM 10-4520-261-12&P
SPACE HEATER ARCTIC (SHA)
0003 00
THEORY OF OPERATION
0003 00-3
SOLID FUEL OPERATION
CAUTION!
All components in the storage enclosure must be removed during
operation. Components remaining inside the storage compartment could
be damaged by high heat.
CAUTION!
Do not overfill the heater when using coal as a solid fuel. Coal is very
dense and produces a very high heat output. Using too much coal in the
heater will overfire the unit and make it very difficult to control the heat
output.
The burner cover (1) is set over the burner shell assembly (2) and prevents ashes, coals, and embers
from collecting in the burner shell assembly (2) during operation. Paper and small pieces of fuel (kindling)
are positioned and ignited with a match on the solid fuel grate (3), which elevates the fuel to ensure proper
air circulation, and allows a space for falling ash to accumulate. When the kindling begins to burn steadily,
larger pieces of wood or coal are added to increase heat output.
The flame is monitored through the sight glass (4). Combustion gases flow through the stack adaptor
assembly (5), up the telescopic stack assembly (6), and through the stack cap assembly (7) to the outside
of the shelter.
Heat output is controlled by the amount of fuel placed in the heater and the positioning the sliding draft
gate (8), which controls air intake.
Care should be used in determining the amount of solid fuel to be placed in the heater. Coal is a very
dense fuel and will provide very high heat output. A small amount of coal should be used to start the
heater. Do not overfill the heater with coal as it may over fire the unit and make it very difficult to control
the heat output.
