Heatilator CD4236-MOD Installation Manual page 19

Top Vent - Horizontal Termination - (continued)
Two Elbows
V Minimum
1
Elbow only
6 in.
1 ft.
1-1/2 ft.
2 ft.
2-1/2 ft.
V + H
1
H
Figure 4.8
Heatilator • CD4236-MOD, CD4842-MOD Installation Manual • 2241-901 Rev. C • 6/15
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.
CD4236-MOD
H + H Maximum
1 2
Not allowed
152 mm 2 ft. 610 mm
305 mm 4 ft.
457 mm 11 ft.
610 mm 17 ft.
762 mm 20 ft.
+ H = 40 ft. (12.2 m) Maximum
1 2
+ H = 20 ft. (6.1 m) Maximum
1 2
V = 1 ft. (305 mm) Minimum
1
H
2
INSTALLED
HORIZONTALLY
V Minimum
1
Elbow only
6 in.
1 ft.
1.2 m
2 ft.
3.4 m
3 ft.
5.2 m
4 ft.
6.1 m
6 ft.
10 ft.
V + H
1 1
H + H
1
V
1
H
1
CD4842-MOD
H + H Maximum
1 2
Not allowed
152 mm Not allowed
305 mm 2 ft. 610 mm
610 mm 4 ft. 1.2 m
914 mm 6 ft. 1.8 m
1.2 m 8 ft. 2.4 m
1.8 m 12 ft. 3.6 m
3.0 20 ft. 6.1 m
+ H = 40 ft. (12.2 m) Maximum
2
= 20 ft. (6.0 m) Maximum
2
= 1 ft. (305 mm) Minimum
V
1
19