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Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-II-MDC Installation Manual • 2369-970 Rev. L • 8/19
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D. High Altitude Installations
NOTICE:
If the heating value of the gas has been reduced,
these rules do not apply. Check with your local gas utility
or authorities having jurisdiction.
When installing above 2000 feet elevation:
• In the USA: Reduce burner orifice 4% for each 1000 feet
above 2000 feet.
• In CANADA: Reduce burner orifice 10% for elevations
between 2000 feet and 4500 feet. Above 4500 feet,
consult local gas utility.
E. Air Shutter Setting
Air shutter settings should be adjusted by a qualified ser
-
vice technician at the time of installation.
The air shutter
is set at the factory.
NOTICE:
If sooting occurs, provide more air by opening
the air shutter.
Air Shutter Settings
NG
Propane
TWILIGHT-II-MDC
3/16 in.
Full Open