36092-2-0316
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36092-2-0316
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INSTALLATION
Installing Firestops
Firestops are required for safety whenever the vent system
passes through an interior wall, an exterior wall, or a ceiling.
These firestops act as a firebreak heat shield and as a means
to insure that minimum clearances are maintained to the vent
system.
Horizontal Firestops
Horizontal runs in the vent system which pass through either
interior or exterior walls, require the use of wall firestops on both
sides of the wall through which the vent passes.
Position the firestops on both sides of the framed hole, previously
cut. Refer to
Figure 32
for sizing information. Secure firestop
with nails or screws. The heat shields of the firestops MUST BE
placed towards the top of the hole. Continue the vent run through
the firestops.
Figure 32
NOTICE
:
SD58DVAWTEC Wall thimble is necessary to maintain
the required three inches of clearance to combustibles above
the vent. Framed hole dimensions shown above are for this wall
thimble.
Vertical Firestops
Vertical runs of this system which pass through ceilings require
the use of ONE ceiling firestop at the hole in each ceiling through
which the vent passes.
Position a plumb bob directly over the center of the vertical vent
component and mark the ceiling to establish the center point
of the vent. Drill a hole or drive a nail through this center point
and check the floor above for any obstructions such as wiring
or plumbing runs. Reposition the fireplace and vent system, if
necessary, to accommodate ceiling joists and/or obstructions.
Cut a 10-5/8 inch x 10-5/8 inch hole (larger if within first 12-in
of rise) through the ceiling, using the center point previously
marked. Frame the hole with framing lumber the same size as
the ceiling joists.
See Figure 33.
If the area above the ceiling
is NOT an attic, position and secure the ceiling firestop on the
ceiling side of the previously cut and framed hole.
See Figure 34.
If the area above the ceiling is an attic, position and secure the
firestop on top of the previously framed hole.
See Figure 35.
NOTICE
:
Remove insulation from the framed area in the attic
before installing the firestop and/or vent pipes.
NOTICE
:
Prevent insulation from contacting pipe after it is
installed.
Figure 33
Figure 34
Figure 35
FLUE RESTRICTOR
BELOW GRADE INSTALLATION
VENTING FIREPLACE - TOP
(Initial 45
°
Elbow Oriented Upwards)
Below Grade Installation
When it is not possible to meet the required vent termination
clearances of 12 inches above grade level (or average snow fall),
a snorkel kit is recommended. It allows installation depth down
to 7 inches below grade level. The 7 inches are measured from
the center of the horizontal vent pipe as it penetrates through the
wall.
Ensure the sidewall venting clearances are observed. If
venting system is installed below ground, we recommend
a window well with adequate and proper drainage to be
installed around the termination area.
3” (7.6cm)
MINIMUM
PIPE
STRAP
48”
(122cm)
COMBUSTIBLE
PROJECTION
18” (45.7cm)
MINIMUM
12” (30.5cm)
ABOVE GRADE
OR AVERAGE SNOWFALL
TYPICAL BASEMENT INSTALLATION
Figure 39
NOTICE:
For proper flame appearance, use flue restrictor
for vertically terminated fireplaces. Do not use for horizontally
terminated fireplaces.
Figures 36 to 38
show the location and recommended openings
for the flue restrictor. The flue restrictor is recommended for use
on vertical vent runs terminating 10ft from the floor or greater.
Adjustments may be made for each particular installation.
Figure 36
NOTICE
:
When installing NG flue restrictor, install with screws
pointing in downward position.
Proper Setting of Natural Gas Flue Restrictor - Figure 37
LP Flue Restrictor - Figure 38
