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11
ANY VENTING WITH A VERTICAL RISE MUST TERMI-
NATE (END) WITHIN THE SHADED AREA.
Restrictors required on:
• All Co-linear (flex pipe)
• All coaxial (rigid pipe) venting higher than 7
feet.
• Both restrictors must be used when restriction is
required.
• Always maintain the proper clearances to
combustibles.
Vertical Venting and Termination
The GF 600 DV Firelight can be vertically vented
through a roof or ceiling. Follow these guidelines
Steep roofs, nearby trees, or predominantly
windy conditions, can promote poor draft or
down draft conditions. In such cases, an increase to
the height of the vent may improve performance.
If an offset or elbow is necessary in the vertical
rise, the vent pipe must be supported every
three feet to avoid excessive stress on the
offsets. Use listed Wall Straps from any of the
approved vent suppliers.
Whenever possible, use 45° elbows instead of
90° elbows as they offer less restriction to the
flow of flue gases and intake air.
A firestop is required at every floor penetration.
The opening should be framed to 10" X 10"
inside dimension. A listed wall thimble is
required as a firestop.
Any venting that is exposed above the first floor must
be enclosed regardless of attic space or living space.
Always maintain the required 1" clearance from all
sides of the vertical vent system.
IT IS NECESSARY to add restriction to a vertical
vent installation to compensate for excessive
draft. See the Adding Draft Restriction section
on page 8.
GAS VENT HEIGHT: In no case shall any discharge
opening on the cap be less than 18” (457mm)
horizontally from the roof surface.
Figure 9. Vent height and clearance from adjacent
surfaces.
HORIZONTAL RUN
7 Ft. (2.13 m)
Min. Height for
Vertical
Termination
35 Ft.
(10.67 m)
30 Ft.
(9.14 m)
25 Ft.
(7.62 m)
20 Ft.
(6.10 m)
15 Ft.
(4.57 m)
5 Ft.
(1.52 m)
2 Ft.
(.61 cm)
Min. Vertical
Rise for 1 ft.
(30.4 cm)
Termination
10 Ft.
(3.05 m)
10 Ft.
(3.05 m)
5 Ft.
(1.52 m)
VERTICAL RUN
Horizontal Overhang
Vertical W
all
Termination
Cap
18.
min.
Lowest Discharge
Opening
18 min.
18.
min.