International comfort products N8MXL Installation Instructions Manual page 2

NOTES:
1. Two additional 7/8−in. (22 mm) diameter holes are located in the top plate.
2. Minimum return−air openings at furnace, based on metal duct. If flex duct is used, see flex duct manufacturer's recommendations for equivalent diameters.
a. For 800 CFM−16−in. (406 mm) round or 14 1/2 x 12−in. (368 x 305 mm) rectangle.
b. For 1200 CFM−20−in. (508 mm) round or 14 1/2 x 19 1/2−in. (368 x 495 mm) rectangle.
c. For 1600 CFM−22−in. (559 mm) round or 14 1/2 x 22 1/16−in. (368 x 560mm) rectangle.
d. For airflow requirements above 1800 CFM, see Air Delivery table in Product Data literature for specific use of single side inlets. The use of both side inlets, a
combination of 1 side and the bottom, or the bottom only will ensure adequate return air openings for airflow requirements above 1800 CFM.
CABINET WIDTH
FURNACE SIZE IN. (MM)
0451412 14−3/16 (360)
0701712 17−1/2 (445)
0701716 17−1/2 (445)
0901714 17−1/2 (445)
0902116 21 (533)
1102120 21 (533)
1352420 24−1/2 (622)
* 135 size furnaces require a 5 in. or 6 in. (127 or 152 mm) vent. Use a vent adapter between furnace and vent stack.
2
Figure 1 − Dimensional Drawing
Table 1 – Dimensions
A B
OUTLET WIDTH
IN. (MM)
12−9/16 (319)
15−7/8 (403)
15−7/8 (403)
15−7/8 (403)
19−3/8 (492)
19−3/8 (492)
22−7/8 (581)
Specifications are subject to change without notice.
C
TOP AND BOTTOM
FLUE COLLAR BOTTOM WIDTH
IN. (MM) IN. (MM)
9−5/16 (237) 12−11/16 (322)
11−9/16 (294) 16 (406)
11−9/16 (294) 16 (406)
11−9/16 (294) 16 (406)
13−5/16 (338) 19−1/2 (495)
13−5/16 (338) 19−1/2 (495)
15−1/16 (383) 23 (584)
D
VENT VENT
CONNECTION
SIZE*
IN. (MM)
4 (102)
4 (102)
4 (102)
4 (102)
4 (102)
4 (102)
4 (102)*
441 01 1421 01
SHIP WT
(LB / KG)
104 (47)
126 (57)
126 (57)
127 (58)
140 (64)
152 (69)
163 (74)