Lennox EL296DF045XV36B Unit Information page 48

7. If intake and exhaust piping must be run up a side wall
to position above snow accumulation or other ob­
structions, piping must be supported. At least one
bracket must be used within 6" from the top of the el­
bow and then every 24" (610mm) as shown in figure
36, to prevent any movement in any direction. When
exhaust and intake piping must be run up an outside
wall, the exhaust piping must be terminated with pipe
sized per table 24.The intake piping may be equipped
with a 90° elbow turndown. Using turndown will add 5
feet (1.5m) to the equivalent length of the pipe.
8. A multiple furnace installation may use a group of up to
four terminations assembled together horizontally, as
shown in figure 39.
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