Heatilator CD4236IFTR Installation Manual page 22

Top Vent - Horizontal Termination - (continued)
One Elbow
ELBOW HEAT SHIELD
(Required when V
1
Figure 4.11
Two Elbows
H
2
Figure 4.12
22
Heatilator • CD4236IFTR, CD4236IFTLR, CD4842IFTR, CD4842IFTLR Installation Manual • 2511-980 Rev. M • 8/21
= 2 ft. or less)
H
1
Note: For corner installations: A 6 in.
(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.
INSTALLED
HORIZONTALLY
WARNING! Risk of Fire! Elbow heat shield required
when V = 2 ft. or less. Clearances to combustibles
1
must be maintained. See Section 5.A.
1/2 ft.
V
1
1-1/2 ft.
H
1
V Minimum H
1 1
Elbow only 2 ft
152 mm 6 ft.
1 ft. 305 mm 11 ft.
457 mm 18 ft.
2 ft. 610 mm 25 ft.
V + H = 40 ft. (12.2 m) Maximum
1 1
H = 25 ft. (7.6 m) Maximum
1
Note: For corner installations: A 6 in.
(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.
V Minimum H + H
1 1
Elbow only 2 ft
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
Maximum
610 mm
1.8 m
3.4 m
5.5 m
7.6 m
Maximum
2
610 mm
1.8 m
3.4 m
5.5 m
7.6 m