30
Restrictor
MANY INSTALLATIONS REQUIRE A RESTRICTOR
for improved
fl
ame picture and performance, This unit
is supplied with one restrictor having four different
positions or settings. The level of restriction required
depends on the vertical rise in the venting system and,
to a lesser degree, the horizontal run and number of
elbows.
The amount of restriction is based on laboratory tests.
The ideal restrictor position may vary slightly, especially
when the vent pipe length is near the limits of the
acceptable con
fi
gurations for each type of restrictor.
The chart on the previous page shows the vent
restrictor required relative to the length of the vent pipe.
To install the restrictor:
1. On an engine previously installed, open the panels
on each side of the window. Remove the window
skirt, the window, the logs, the right and rear top
brick panels.
2. According to the installation, look up the venting
chart on the previous page to know what position
the restrictor should be
fi
tted in.
3. Remove the screws (2) on each side of the
venting
port in the fi rebox roof
.
4. Place the restrictor in the required position over the
port aligning it with the two screw holes.
5. Fit the screws and tighten.
6. Continue the installation or, for
an engine previously installed,
replace the right and rear top brick
panels, the logs, the window and
the window skirt. Close the side
panels.
Position #1
Position #2
Position #3
Position #4
Co-axial Venting
INSTALL HERE
QUALIFIED
INSTALLER
