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Stack cap assembly (1). The Stack Cap Assembly installs 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 tent lines that stabilize the entire stack assembly (4) in an upright (vertical) position during heater operation.
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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 adapter assembly (5), allowing combustion gases to discharge outside the tent during operation.