TM 10-4520-261-12&P
SPACE HEATER ARCTIC (SHA)
0002 00
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS
0002 00-1
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS
Stack cap assembly (1). The Stack Cap Assembly is installed on the top of the nested stack assembly
(4) to prevent down-drafts from entering the heater during operation. It also prevents rain, leaves, and
other debris from entering the stack assembly. Guy lines (2), secured to three wire ropes (3), lead to
ground stakes that stabilize the entire stack assembly (4) in an upright (vertical) position during heater
operation.
Nested stack assembly (4). Consists of six pipe sections (middle sections not shown) of decreasing
diameter. When assembled, the sections form a cone-shaped stack with the largest diameter section at
the base and the smallest diameter at the top. Each section is flanged on its smaller end in order to fit into
the next higher section. The assembly (4) seats in the stack adaptor assembly (5), allowing combustion
gases to discharge outside the tent during operation. When disassembled, the sections fit inside each
other for storage in the upper portion of the heater body (6).
Heater body assembly (6). Basic shell of the heater.
Lid assembly (7). The lid assembly (7) fits into a circular opening on the top surface of the heater. The
built-in sight glass (8) allows the user to monitor the burner flame. It also permits access to the burner
down tube assembly (9) when igniting liquid fuel. The lid assembly (7) is stored in the upper portion of the
heater body (15).
Door assembly (10). Hinged door is secured with a slide latch. When opened, it allows access to install
and remove the solid fuel grate (11) and burner cover assembly (12). It permits adding and igniting fuel in
solid fuel operation. A built-in sliding draft gate (13) allows burn rate control during solid fuel operation
only.
Burner cover assembly (12). During solid fuel operation, this cover (12) is positioned on top of burner
shell (18) to prevent ashes, coals, and embers from falling into the burner shell. During liquid fuel
operation, the cover (12) is positioned in the frame of the door assembly, and held in position by the
closed door (10), to achieve a tight air seal.
Solid fuel grate (11). Elevates solid fuel while it burns to allow for air circulation and to provide an area
for ash deposits. The Solid Fuel Grate MUST be removed prior to liquid fuel operation.
Rear door (14). The Rear Door fits on the rear of the heater and acts to contain the parts which may be
stored in the storage enclosure (15) while the heater is not in use.
Rear storage enclosure (15). Accessed through the rear door (14) and used to stow all loose parts that
will not fit inside the heater body during transport of the heaters. Items stored in this area include the Fuel
Flow Control Valve (16), Stack Cap Assembly (1), and Gravity Feed Adaptor (26).
Burner shell assembly (17). Area of combustion in liquid fuel mode. Consists of a perforated burner
shell (18), high fire ring (19), and up-tube (20) which is welded into the base of the burner shell (18). It
permits fuel vapors to flow into the down-tube assembly (9) during operation.
Down-tube assembly (9). A capped down tube which is positioned on the up-tube (20) and removable
through the lid assembly (7). A superheater ring is located on the exterior for heat transfer. During
operation, fuel flows into the up-tube (20) where its level is gravity-maintained with the fuel flow control
