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Top Vent - Horizontal Termination - (continued)
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
Minimum
H
1
Elbow only
1/2 ft.
152 mm
6 ft.
1 ft.
305 mm
11 ft.
1-1/2 ft.
457 mm
18 ft.
2 ft.
610 mm
25 ft.
V
+ H
+ H
= 40 ft. (12.2 m) Maximum
1
1
2
H
+ H
= 25 ft. (7.6 m) Maximum
1
2
V
= 1/2 ft. (152 mm) Minimum
1
H
2
Figure 4.11
22
+ H
Maximum
1
2
Not allowed
1.8 m
3.4 m
5.5 m
7.6 m
INSTALLED
HORIZONTALLY
Heatilator • CNXT4236IFT, CNXT4842IFT Installation Manual • 2515-980 Rev. R • 1/23
CNXT4842 Series
V
Minimum
H
1
1
Elbow only
Not allowed
1/2 ft.
152 mm
Not allowed
1 ft.
305 mm
2 ft.
1-1/2 ft.
457 mm
2 ft.
2 ft.
610 mm
4 ft.
2-1/2 ft.
762 mm
4 ft.
3 ft.
914 mm
6 ft.
4 ft.
1.2 m
10 ft.
6 ft.
1.9 m
14 ft.
8 ft.
2.4 m
18 ft.
10 ft.
3.1 m
20 ft.
V
+ H
+ H
= 40 ft. (12.2 m) Maximum
1
1
2
H
+ H
= 20 ft. (6.1 m) Maximum
1
2
V
= 1 ft. (305 mm) Minimum
1
H
1
+ H
Maximum
2
610 mm
610 mm
1.2 m
1.2 m
1.8 m
3.1 m
4.3 m
5.5 m
6.1 m
V
1
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