29
Heatilator • CD4236IFTR, CD4236IFTLR, CD4842IFTR, CD4842IFTLR Installation Manual • 2511-980 Rev. M
• 8/21
Rear Vent - Vertical Termination
One Elbow
Figure 4.24
Two Elbows
Figure 4.25
H
1
V
1
INSTALLED
HORIZONTALLY
H
1
H
2
V
1
V
1
Minimum
H
1
Maximum
6 in.
152 mm
2 ft.
610 mm
1 ft.
305 mm
3 ft.
914 mm
2 ft.
610 mm
5 ft.
1.5 m
3 ft.
914 mm
7 ft.
2.1 m
4 ft.
1.2 m 8 ft.
2.4 m
5 ft.
1.5 m
8 ft.
2.4 m
V
1
+ H
1
= 40 ft. (12.2 m) Maximum
H
1
= 8 ft. (2.4 m) Maximum
V
1
Minimum
H
1
+ H
2
Maximum
Back to Back 90º Elbows
3 ft.
914 mm
2 ft.
610 mm
6 ft.
1.8 m
4 ft.
1.2 m
9 ft.
2.7 m
6 ft.
1.8 m
12 ft.
3.7 m
8 ft.
2.4 m
15 ft.
4.6 m
V
1
+ H
1
= 40 ft. (12.2 m) Maximum
H
1
+ H
2
= 15 ft. (4.6 m) Maximum
