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VENTING INSTALLATION
Nails
Firestop Spacer
Figure 4 -
Install Firestop in Ceiling
5. Frame the hole with framing lumber the same size as
the ceiling joists. Position firestop. If attic is above,
mount firestop on top of framing. Figure 3. If room is
above, mount firestop on the bottom of framing. Figure
4. Secure with nails or screws.
6. Run vent through firestop.
When installing in a chase, you should insu-
late the chase as you would the outside walls
of your home. This is especially important in
cold climates. Insulation should be considered
a combustible material. Maintain proper clear-
ances to all combustible materials.
Treatment of firestops and construction of the
chase may vary from buiding type to building
type. These instructions are not substitutes for
the requirements of local building codes. You
must follow all local building codes.
VERTICAL TERMINATION
Major building codes specify a minimum vent height
above the rooftop depending on the pitch of the roof. Re-
fer to Figure 5 for minimum heights, provided the termina-
tion cap is at least 8' from a vertical wall and 2' below a
horizontal overhang. Trees, buildings, adjoining roof lines
and adverse wind conditions may require taller chimneys
than what is shown.
LOCATE AND INSTALL VERTICAL TERMI-
NATION
NOTE: When working on the foor, cover the opening of
the installed vent pipe below to prevent debris falling in.
20301938
Joist
Listed Vertical
Termination
Cap
Listed Gas Vent
NOTE: Vertical termination must be
at least 8' from vertical wall.
Figure 5 -
Minimum Vent Height for Various Roof Pitches
Roof Pitch
Flat to 6/12
6/12 to 7/12
Over 7/12 to 8/12
Over 8/12 to 9/12
Over 9/12 to 10/12
Over 10/12 to 11/12
Over 11/12 to 12/12
Over 12/12 to 14/12
Over 14/12 to 16/12
Over 16/12 to 18/12
Over 18/12 to 20/12
Over 20/12 to 21/12
1. Locate and mark the vent center point on the underside
of the roof, and drive a nail trough the center joint.
2. The size of the roof hole framing dimensions depends
on the pitch of the roof.
3. Cut and frame the roof hole.
4. Continue to install vent sections through the roof hole
until reaching the appropriate distance above the
roof.
5. Attach a flashing to the roof using nails, and use a
non-hardening mastic around the edges of the flash-
ing base when it meets the roof.
6. Attach a storm collar over the flashing joint to form a
watertight seal. Place non-hardening mastic around
the joint, between the storm collar and the vertical
pipe.
7. Attach termination per pipe manufacturer's instruc-
tions.
B-Vent Specialty Gas Fireplaces
Lowest Discharge
Opening
H
X
12
Roof Pitch is x/12
H (Min) - Minimum
Height from Roof to Low-
est Discharge Opening
FP1022
H Min. (ft)
1'
FP1022
1'3"
1'6"
Typical Straight Up Installation
2'
1/26/00 djt
2'6"
3'3"
4'
5'
6'
7'
7'6"
8'
9
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