Top Vent - Horizontal Termination
One Elbow
Note: A 6 in. (152 mm) section of straight flue must be at- tached to the fireplace before a 90° elbow.
H1
V1
Figure 7.3
V1 Minimum | H1 Maximum | ||
Elbow only | 2 ft. | 610 mm | |
1 ft. | 305 mm | 762 mm | |
2 ft. | 610 mm | 1.68 m | |
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3 ft. | 914 mm | 9 ft. | 2.74 m |
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4 ft. | 1.22 m | 12 ft. | 3,66 m |
5 ft. | 1.52 m | 15 ft. | 4.57 m |
V1 + H1 Maximum = 38 ft. (11.58 m)
H1 Maximum = 15 ft. (4.57 m)
Two Elbows
Note: A 6 in. (152 mm) section of straight flue must be attached to the fireplace before a 90° elbow.
V1 Minimum | H1 + H2 Maximum | ||
Elbow only | Not Allowed | ||
1 ft. | 305 mm | 2 ft. | 610 mm |
2 ft. | 610 mm | 5 ft. | 1.52 m |
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3 ft. | 914 mm | 8 ft. | 2.44 m |
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4 ft. | 122 mm | 11 ft. | 3.35 m |
5 ft. | 152 mm | 14 ft. | 4.27 m |
V1 + H1 + H2 Maximum = 38 ft. (11.58 m)
H1 + H2 Maximum = 14 ft. (4.27 m)
H2
H1
V1
INSTALLED
HORIZONTALLY
Figure 7.4
26 | Heat & Glo • |