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D. Vent Diagrams
Fire Risk. Explosion Risk.
Do NOT pack insulation or other combustibles between ceiling fi restops.
• ALWAYS maintain specifi ed clearances around venting and fi restop systems.
• Install wall shield and ceiling fi restops as specifi ed.
Failure to keep insulation or other material away from vent pipe may cause fi re.
1. Top Vent - Horizontal Termination
One Elbow
Figure 5.3
Two Elbows
Note: Must have a 18 inches minimum
vertical vent before attaching a 90° elbow
to the unit.
H
2
Figure 5.4
14
H
1
H
1
INSTALLED
HORIZONTALLY
Heat & Glo • SL-36-Ultimate • 2141-900 Rev. i • 5/11
WARNING
V
1
V
1
V
Minimum
H
1
1-1/2 ft.
457 mm
3 ft
2-1/2 ft.
762 mm
6 ft
3-1/2 ft.
1.7 m
9 ft
4 ft.
1.2 m
10 ft
4-1/2 ft.
1.4 m
12 ft
5-1/2 ft.
1.7 m
15 ft
6-1/2 ft.
2 m
18 ft
7-1/2 ft.
2.3 m
21 ft
H
= 21 ft. (6.4 m) Maximum
1
V
= 40 ft. (12.2 m) Maximum
1
V
+ H
= 30 ft. (9.1 m) Maximum*
1
1
Note: Must have a 18 inches minimum
vertical vent before attaching a 90° elbow
to the unit.
* If the horizontal component is less than
5 feet then the total vent run can be
extended to 40 feet.
V
Minimum
H
1
1
1-1/2 ft.
457 mm
3 ft
2-1/2 ft.
762 mm
6 ft
3-1/2 ft.
1.7 m
9 ft
4 ft.
1.2 m
10 ft
4-1/2 ft.
1.4 m
12 ft
5-1/2 ft.
1.7 m
15 ft
6-1/2 ft.
2 m
18 ft
7-1/2 ft.
2.3 m
21 ft
V
= 40 ft. (12.2 m) Maximum
1
H
+ H
= 21 ft. (6.4 m) Maximum
1
2
V
+ H
+ H
= 30 ft. (9.1 m) Maximum*
1
1
2
* If the horizontal component is less than
5 feet then the total vent run can be
extended to 40 feet.
Maximum
1
924 mm
1.8 m
2.7 m
3.1 m
3.7 m
4.6 m
5.5 m
6.4 m
+ H
Maximum
2
924 mm
1.8 m
2.7 m
3.1 m
3.7 m
4.6 m
5.5 m
6.4 m
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