Bryant 310AAV Installation, Start-Up, Operating And Service And Maintenance Instructions page 29

Caution!! for the following applications, use the minimum vertical vent heights as specified below.
FURNACE
ORIENTATION ORIENTATION
Vent elbow left, then
Downflow
Vent elbow right,
Horizontal Left
then up Fig. 35
Vent Elbow up
Horizontal Left
Vent elbow right
Horizontal Left
Vent elbow up then
Downflow
Vent elbow up, then
Downflow
* 4 in. (102 mm) inside casing or vent guard
** Including 4 in. (102 mm) vent section (s)
NOTE: All vent configurations must also meet National Fuel Gas Code (NFGC) venting requirements
NOTE: For all unlisted vent configurations, refer to National Fuel Gas Code (NFGC) venting requirements.
SEE NOTES: 1,2,4,7,8,9
on the page following
these figures
Fig. 28 --- Upflow Application- -Vent Elbow Up
Table 10—Minimum Vent Heights
For all other applications, follow exclusively the national fuel gas code.
VENT FURNACE
INPUT (BTUH/HR)
154,000
132,000
up Fig. 32
110,000(036/--- 12 only)
154,000
132,000
154,000
132,000
Fig. 36
154,000
Fig. 37
110,000
left Fig. 30 (036/--- 12 only)
110,000
right Fig. (036/--- 12 only)
33
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MINIMUM VENT
DIAMETER
IN. (mm)*
5 (127)
5 (127)
5 (127)
5 (127)
5 (127)
5 (127)
SEE NOTES: 1,2,3,4,7,8,9
on the pages following
these figures
Fig. 29 --- Upflow Application- -Vent Elbow Right
29
MINIMUM VERTICAL VENT
HEIGHT
FT. (M)**
12 (3.6)
7 (.65)
7 (,65)
7 (.65)
10 (3.0)
10 (3.0)
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