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Heatilator • CD4236IFTR, CD4236IFTLR, CD4842IFTR, CD4842IFTLR Installation Manual • 2511-980 Rev. M
• 8/21
Figure 4.18
H
1
V
1
V
2
Two Elbows
V
1
H
1
Maximum
V
2
V
1
+ V
2
Min.
Elbow only
2 ft.
610 mm
*
*
*
6 in.
152 mm
6 ft.
1.8 m
*
*
*
2 ft.
610 mm
11 ft.
3.4 m
*
*
*
3 ft.
914 mm
16 ft.
4.9 m
*
*
*
4 ft.
1.2 m
20 ft.
6.1 m
*
*
*
V
1
+ V
2
+ H
1
= 60 ft. (18.3 m) Maximum
*No specific restrictions on this value EXCEPT
V
1
+ V
2
+ H
1
cannot exceed 60 ft (18.3 m)
Note
: If the DVP-2SL or DVP-SLP24 adapter is used with
SLP pipe, you MUST subtract one number from the table
in Figure 4.16.
Example:
Top vent 40 ft vertical with DVP pipe = 4-4
Top vent 40 ft vertical with SLP pipe = 3-3
1 2 3 4 5
5 4 3 2 1
ALWAYS USED WITH THE
HOLES TO THE LEFT
ALWAYS USED WITH THE
HOLES TO THE RIGHT
FLUE RESTRICTOR SET TO 4-4
4 5
5 4 3 2 1
Figure 4.17 Setting the Flue Restrictor
