34
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Regency
®
CLASSIC™ C34-11 Direct Vent Freestanding Gas Stove
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34
installation
CATHEDRAL CEILINGS
Round Support (RDS) & Square
Support (SQS)
If your home has a cathedral ceiling (no attic
space between the ceiling and the roof), install
the chimney and support as follows.
1. Situate the chimney in a convenient location as
near as possible to the appliance outlet. Cut
and frame a hole in the roof for the support.
The sides of this hole must be vertical with
1-1/4" clearance.
2. Place the support in the opening. Lower it to
the correct height as determined by the table
and Diagram below.
Using a level, make sure the support is vertical. If
the support extends above the roof, cut it flush
with the top of the roof. Nail the support to
the frame opening using (8. 3" spiral nails or
#8 x 1-1/2" screws.
Note: If you are using a 6" square support
you may find it difficult to screw it in
place because it is fairly small inside.
Simpson Dura-Vent has provided angle brack
-
ets with this support which can be screwed
to the outside of the support box and nailed
to surrounding framing as required. Use a
minimum of four #8 x 1/2" screws per bracket.
In some cases these brackets may need to be
trimmed (e.g.: to fit under a flashing). Place
the Finish Collar around the support and fasten
it to the ceiling using the screws provided.
3. Use appropriate roof flashing. Place the flash
-
ing under the upper shingles and on top of the
lower shingles approximately half of the flashing
should be under the shingles.
4. Assemble the desired lengths of Black Pipe and
Elbows necessary to reach from the appliance
adaptor up through the support box and flashing
to proper height as per Diagram 12, local codes
or "Exterior Vent Terminal Locations" section.
Ensure that all pipe and elbow connections are
in their fully twist lock position.
5. Ensure vent is vertical and secure flashing to the
roof with roofing nails. Slide the storm collar
over the pipe section and seal with a mastic.
6. Twist lock the vent cap on to the last section.
Offset Chart
Diagram 12
Diagram 13
Roof Pitch Minimum Vent Height
Feet Meters
flat to 7/12
2
0.61
over 7/12 to 8/12
2
0.61
over 8/12 to 9/12
2
0.61
over 9/12 to 10/12
2.5
0.76
over 10/12 to 11/12
3.25
0.99
over 11/12 to 12/12
4
1.22
over 12/12 to 14/12
5
1.52
over 14/12 to 16/12
6
1.83
over 16/12 to 18/12
7
2.13
over 18/12 to 20/12
7.5
2.29
over 20/12 to 21/12
8
2.44
Galvanized pipe and elbows may be utilized
in the attic as well as above the roofline. The
galvanized finish is desirable above the roofline
due to its higher corrosion resistance.
Continue to add pipe sections through the
flashing until the height of the vent cap meets
the minimum height requirements specified
in Diagram 12 or local codes. Note that for
steep roof pitches, the vertical height must be
increased. A poor draft, or down drafting can
result from high wind conditions near big trees
or adjoining roof lines, in these cases, increasing
the vent height may solve the problem.
7.
Ensure vent is vertical and secure the base of
the flashing to the roof with roofing rails, slide
storm collar over the pipe section and seal with
a mastic.
8.
Install the vertical termination cap by twist
locking it.
Notes:
a)
For multi-storey vertical installations, a Ceil-
ing Fire stop is required at the second floor,
and any subsequent floor. See Diagram 13.
The opening should be framed to 10 " x 10"
inside dimensions, in the same manner as
shown in Diagram 10.
b)
Any occupied areas above the first floor, in
-
cluding closets and storage spaces, through
which the vertical vent passes, must be
enclosed.
Slope
"X"
0/12 - 2/12
4"
2/12 - 7/12
5-1/2"
7/12 - 12/12 6-3/4"
12/12 - 24/12 7-1/2"
24/12+
12-1/2"
