Installation Guide

26
© 2021 United States Stove Company
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 gure 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 ue. 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 restop from
the top side. This prevents loose insulation
from falling into the required clearance space.
Otherwise, install restop below the framed
hole. The restop 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 ue
up through the restop. 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 ow of the ue gases and
intake air.
5. Place the ashing over the pipe section(s)
extending through the roof. Secure the base
of the ashing to the roof and framing with
roong nails. Be sure roong material overlaps
the top edge of the ashing 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.
HOT
H
1
V
1
H
V
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) 52-1/2” (1334mm)
20” (6m) 98-3/4” (2508mm)
NOTE: Add 1/4” rise per 12” horizontal length
of pipe.
NOTE: V + V1 = 20’ (6 m) maximum.