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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