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Majestic • PEARL36STIN, PEARL36PRIN Installation Manual • 2478-980 Rev. C • 3/17
AIR SHUTTER
OPEN
CLOSED
Figure 9.1 Air Shutter
Air Shutter Settings (Factory Set to Minimum Vent Run)
GAS TYPE
MIN. VENT RUN
MAX. VENT RUN
NG
3/8 in.
Full Open
PROPANE
5/8
Full Open
Minimum and maximum shutter settings were determined per the vent con
fi
guration shown in Figure 4.20.
• Minimum vent run consists of enough horizontal vent pipe to exit 2 X 6 wall construction (approximately 8 inches).
• Maximum vent run consists of “H
1
Maximum” shown in Figure 4.20.
Note:
All vent runs may need to be evaluated for ideal shutter settings. Shutter distances may vary due to vent run, fuel
quality, and elevation.
E. Air Shutter Setting
Air shutter settings should be adjusted by a quali
fi
ed service technician at the time of installation. The air shutter is set at the
factory for minimum vertical vent run. Minimum vent run consists of enough horizontal vent pipe to exit 2 X 6 wall construc-
tion (approximately 8 inches). Adjust air shutter for longer vertical runs. See Figure 4.14.
• Loosen the wing nut.
• Move the wing nut to adjust the air shutter. See Figure 9.1.
• Tighten the wing nut when adjustment is complete.
NOTICE:
If sooting occurs, provide more air by opening the air shutter.
Note:
Adjust air shutter after
fl
ame has reached full maturity (approximately 20-40 minutes).