International comfort products N8MXL Installation Instructions Manual page 27

Caution!! For the following applications, use the minimum vertical vent heights as specified below. For all other applications,
FURNACE
ORIENTATION
Downflow Vent elbow left, then up Fig.
Horizontal Left Vent elbow right, then up Fig.
Horizontal Left Vent elbow right Fig.
NOTE: All vent configurations must also meet National Fuel Gas Code venting requirements NFGC
*4 in. (102 mm) inside casing or vent guard
**Including 4 in. (102 mm) vent section(s)
SEE NOTES: 1,2,4,7,8,9
on the page following
these figures
Fig. 27 − Upflow Application−Vent Elbow Up
SEE NOTES: 1,2,3,4,7,8,9
on the pages following
these figures
Fig. 28 − Upflow Application−Vent Elbow Right
441 01 1421 02
follow exclusively the National Fuel Gas Code.
VENT ORIENTATION
31
34
35
A03208
A03209
Specifications are subject to change without notice.
MIN. VENT
FURNACE INPUT
DIAMETER
(BTUH/HR)
IN (MM)*
132,000 5 (127 )
132,000 5 (127 )
132,000 5 (127 )
Fig. 29 − Downflow Application−Vent Elbow Up then Left
SEE NOTES: 1,2,4,5,7,8,9
on the page following
these figures
Fig. 30 − Downflow Application−Vent Elbow Up
MIN. VERTICAL VENT
HEIGHT
FT. (M)**
12 (4)
7 (2)
7 (2)
SEE NOTES:1,2,3,4,5,7,8,9
on the page following
these figures
A03210
A03211
27