Quadra-Fire • Expression 36 (QV36A-FB) • 2062-900 Rev. S • 11/1114
Note: Must have a 12 inch minimum
vertical vent before attaching a 90° elbow
to the unit.
H
1
V
1
Figure 5.3
Figure 5.4
D. Vent Diagrams
1. Top Vent - Horizontal Termination
One Elbow
Two Elbows
* If the horizontal component is less than
5 feet then the total vent run can be
extended to 40 feet.
INSTALLED
HORIZONTALLY
H
1
H
2
V
1
V
1
Minimum H
1
Maximum
1 ft. 305 mm 3 ft 924 mm
2-1/2 ft. 762 mm 6 ft 1.8 m
3-1/2 ft. 1.7 m 9 ft 2.7 m
4 ft. 1.2 m 10 ft 3.1 m
4-1/2 ft. 1.4 m 12 ft 3.7 m
5-1/2 ft. 1.7 m 15 ft 4.6 m
6-1/2 ft. 2 m 18 ft 5.5 m
7-1/2 ft. 2.3 m 21 ft 6.4 m
H
1
= 21 ft. (6.4 m) Maximum
V
1
= 40 ft. (12.2 m) Maximum
V
1
+ H
1
= 30 ft. (9.1 m) Maximum*
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.
WARNING
V
1
Minimum H
1
+ H
2
Maximum
1 ft. 305 mm 3 ft 924 mm
2-1/2 ft. 762 mm 6 ft 1.8 m
3-1/2 ft. 1.7 m 9 ft 2.7 m
4 ft. 1.2 m 10 ft 3.1 m
4-1/2 ft. 1.4 m 12 ft 3.7 m
5-1/2 ft. 1.7 m 15 ft 4.6 m
6-1/2 ft. 2 m 18 ft 5.5 m
7-1/2 ft. 2.3 m 21 ft 6.4 m
V
1
= 40 ft. (12.2 m) Maximum
H
1
+ H
2
= 21 ft. (6.4 m) Maximum
V
1
+ H
1
+ H
2
= 30 ft. (9.1 m) Maximum*
* If the horizontal component is less than
5 feet then the total vent run can be
extended to 40 feet.
Note: Must have a 12 inches minimum
vertical vent before attaching a 90° elbow
to the unit.
