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