Superior DRT4036TEN Installation And Operation Instructions Manual page 15

Flat Ceiling Installation
1. Cut a 11 / " square hole in ceiling using
1
2
locating hole as a center point. Opening
should be framed to 11
dimensions, as shown in Figure 10 on
page 11 using framing lumber the same
size as ceiling joists. If area above ceil-
ing is an insulated ceiling or an attic, nail
firestop from top side. This prevents loose
insulation from falling into required clear-
ance space. If area above ceiling is a living
space, install firestop below framed hole.
Firestop should be installed with no less
than three nails per side (see Figure 15).
2. Assemble desired lengths of pipe and
elbows necessary to reach from fireplace
flue up through firestop. Be sure all pipe
and elbow connections are fully twist-
locked (see Figure 9, page 11).
3. Cut a hole in the roof using locating hole
as a center point. (Cover any exposed
open vent pipes before cutting hole in
roof.) The 11
1
measured on the horizontal; actual length
may be larger depending on pitch of roof.
There must be a 1" clearance from vent
pipe to combustible materials. Frame
opening as shown in Figure 10, page 11.
4. Connect a section of pipe and extend up
through hole.
Note: If an offset is needed to avoid
obstructions, you must support vent pipe
every 3 feet. Use wall straps for this pur-
pose (see Figure 17). Whenever possible,
use 45° elbows instead of 90° elbows. The
45° elbow offers less restriction to the flow
of flue gases.
5. Place flashing over pipe section(s) ex-
tending through roof. Secure base of
flashing to roof and framing with roofing
nails. Be sure roofing material overlaps
top edge of flashing as shown in Figure
17. There must be a 1" clearance from
vent pipe to combustible materials.
6. Continue to add pipe sections until height
of vent cap meets the minimum building
code requirements described in Figure 8
on page 8.
Note: You must increase vent height for
steep roof pitches. Nearby trees, adjoining
rooflines, steep pitched roofs and other
similar factors may cause poor draft or
126721-01A
VENTING INSTALLATION
/ " x 11 /
1 1
2 2
/ " x 11 / " hole must be
1
2 2
www.SuperiorFireplaces.US.com
Continued
down-drafting in high winds. Increasing
vent height may solve this problem.
7. Twist-lock vent cap onto last section of
" inside
vent pipe.
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
Note: If vent pipe passes through any occupied
areas above first floor, including storage spaces
and closets, you must enclose pipe. You may
frame and sheetrock enclosure with standard
construction material. Make sure and meet the
minimum allowable clearances to combustibles.
Do not fill any required air spaces with insulation.
Vertical Termination Configurations
Figures 19 and 20, page 16, show the con-
figurations for vertical termination.
If area above is an attic or insulated area,
install firestop above framed hole.
If area above is a living space, install
Figure 18 - Installing Firestop
Vent Termination Chart
Minimum Height
Roof Pitch
firestop below framed hole.
Feet Min.
1
1.25
1.5
2
2.5
3.25
4
5
6
7
7.5
8.0
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