Heatilator • CD4236IFTR, CD4236IFTLR, CD4842IFTR, CD4842IFTLR Installation Manual • 2511-980 Rev. M
• 8/21
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Figure 4.19
Top Vent - Vertical Termination - (continued)
Three Elbows
INSTALLED
HORIZONTALLY
H
1
H
2
V
1
V
2
V
1
H
1
+ H
2
V
2
V
1
+ V
2
Minimum H
1
+ H
2
Maximum
Elbow only
1 ft.
305 mm
*
*
*
1 ft.
305 mm
6 in.
152 mm
2 ft.
610 mm
*
*
*
2 ft.
610 mm
1 ft.
305 mm
2 ft.
610 mm
*
*
*
2 ft.
610 mm
2 ft.
610 mm
4 ft.
1.2 m
*
*
*
4 ft.
1.2 m
3 ft.
914 mm
9 ft.
2.7 m
*
*
*
9 ft.
2.7 m
4 ft.
1.2 m
18 ft.
5.5 m
*
*
*
18 ft.
5.5 m
H
1
+ H
2
= 20 ft. (6.1 m) Maximum V
1
+ V
2
+ H
1
+ H
2
= 60 ft. (18.3 m) Maximum