Heatilator • CNXT4236IT-C, CNXT4842IT-C, CNXT4236IH-C, CNXT4842IH-C • 2208-900 Rev. B • 12/09
28
INSTALLED
HORIZONTALLY
H
1
H
2
V
1
Figure 7.5
Two Elbows
Note:
For corner installations: A 6 inch
(152 mm) section of straight pipe may
need to be attached to the appliance
before a 90º
elbow, to allow the vent
pipe to clear the top standoffs.
CNXT4236 Series
V
1
Minimum
H
1
+ H
2
Maximum
Elbow only
1 ft.
305 mm
6 in.
152 mm
2 ft.
610 mm
1 ft.
305 mm
2 ft.
610 mm
2 ft.
610 mm
4 ft.
1.2 m
3 ft.
914 mm
9 ft.
2.7 m
4 ft.
1.2 m
18 ft.
5.5 m
5 ft.
1.5 m
20 ft.
6.1 m
V
1
+ H
1
+ H
2
= 40 ft. (12.2 m) Maximum
H
1
+ H
2
= 20 ft. (6.1 m) Maximum
CNXT4842 Series
V
1
Minimum
H
1
+ H
2
Maximum
Elbow only
Not allowed
6 in.
152 mm
Not allowed
1 ft.
305 mm
2 ft.
610 mm
2 ft.
610 mm
4 ft.
1.2 m
3 ft.
914 mm
6 ft.
1.8 m
4 ft.
1.2 m
8 ft.
2.4 m
6 ft.
1.8 m
12 ft.
3.7 m
10 ft.
3 m
20 ft.
6.1 m
V
1
+ H
1
+ H
2
= 40 ft. (12.2 m) Maximum
H
1
+ H
2
= 20 ft. (6.1 m) Maximum
V
1
= 1 ft. (305 mm) Minimum