Horizontal Application - Allied Air A96US2V Installation Instructions Manual

EXHAUST PIPE

Horizontal Application

NOTE: All horizontal runs of exhaust pipe must slope back toward unit.
A minimum of 1/4" (6 mm) drop for each 12" (305 mm) of horizontal
run is mandatory for drainage.
NOTE: Exhaust pipe MUST be glued to furnace exhaust fittings.
NOTE: Exhaust piping should be checked carefully to make sure
there are no sages or low spots.
Figure 22
IMPORTANT
Do not use screens or perforated metal in exhaust or
intake terminations. Doing so will cause freeze-ups and
may block the terminations.
MINIMUM VENT PIPE LENGTHS
A96DF2V
045, 070, 090, 110
* Any approved termination may be added to the minimum lengh listed.
Page 18 of 80
MIN. VENT LENGTH*
15 ft. or
5 ft plus 2 elbows
or 10 ft plus 1 elbow
Table 4
Use the following steps to correctly size vent pipe diameter.
Issue 1621 507404-04