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VENTING INSTALLATION
INSTALLATION FOR VERTICAL TERMINATION
1. Determine the route your vertical venting will take. If
ceiling joist, roof rafters or other framing will obstruct
the venting system, consider an offset. Refer to the figure
above to avoid cutting load bearing members. NOTE:
Pay special attention to these installation instructions for
required clearances (air space) to combustibles when
passing through ceilings, walls, roofs, enclosures, attic
rafters, etc. Do not pack air spaces with insulation. Also
note maximum vertical rise of the venting system and
any maximum horizontal offset limitations. Offsets must
fall within the parameters shown in this manual.
2. Set stove in desired location. Drop a plumb line down
from the ceiling to the position of the burner system exit
flue. Mark the center point where the vent will penetrate
the ceiling. Drill a small locating hole a this point. Drop
a plumb line from the inside of the roof to the locating
hole in the ceiling. Mark the center point where the
vent will penetrate the roof. Drill a small locating hole
at this point.
FLAT CEILING INSTALLATION
1. Cut a 9-1/2" (241 mm) square hole in the ceiling using
the locating hole as a center point The opening should
be framed to 9-1/2" x 9-1/2" (241 mm x 241 mm)
inside dimensions as shown using framing lumber the
same size as the ceiling joist. If the area above the
ceiling is an insulated ceiling or a room, nail firestop
from the top side. This prevents loose insulation from
falling into the required clearance space. Otherwise,
install firestop below the framed hole. The firestop
should be installed with no less than three nails per
side.
2. Assemble the desired lengths of pipe and elbows
necessary to reach from the burner system flue up
through the firestop. Be sure pipe and elbow connections
are fully twist-locked.
3. Cut a hole in the roof using the locating hole as a center
point. (Cover any exposed open vent pipes before
cutting hole in roof). The 9-1/2" x 9-1/2" (241 mm
x 241 mm) hole must be measured on the horizontal.
Actual length may be larger depending on the pitch
of the roof. There must be a 1" minimum clearance
from the vent pipe to combustible materials. Frame the
opening as shown in this manual.
4. Connect a section of pipe and extend up through the
hole. NOTE: If an offset is needed to avoid obstructions,
you must support the vent pipe every three (3) feet. Use
wall straps for this purpose. Whenever possible, use
45° elbows instead of 90° elbows. The 45° elbow
offers less restriction to the flow of the flue gases and
intake air.
5. Place the flashing over the pipe section(s) extending
through the roof. Secure the base of the flashing to the
roof and framing with roofing nails. Be sure roofing
material overlaps the top edge of the flashing as
shown. There must be a 1" clearance from the vent
pipe to combustible materials.
6. Continue to add pipe sections until the height of the vent
cap meets the minimum building code requirements.
H
1
H O
T
Horizontal Termination
Configuration for Rigid
Venting Using Three (3) 90°
Elbows with Termination
at 90° to Stove
Horizontal Venting with Three (3) 90° Elbows
Maximum Horizontal
(H + H¹)
24" (610mm)
20" (6m)
NOTE: Add 1/4" rise per 12" horizontal length of pipe.
NOTE: V + V1 = 20' (6 m) maximum.
25
V
1
V
H
52-1/2" (1334mm)
98-3/4" (2508mm)
© 2021 Breckwell Hearth
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