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Heatilator • LEGACY42-IFT Installation Manual • 4095-901 Rev. A
• 12/17
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 input rate 4% for each 1000 feet
above 2000 feet.
• In CANADA: Input ratings are certified without a
reduction of input rate for elevations up to 4500 feet
(1370 m)above sea level. Please consult provincial and/
or local authorities having jurisdiction for installations at
elevations above 4500 feet (1370 m).
Check with your local gas utility to determine proper
orifice size.
MODEL
GAS TYPE
AIR SHUTTER
LEGACY42-IFT
NG
Minimum
LEGACY42-IFT
Propane
Open (Removed)
E. Air Shutter Setting
Air shutter setting should be adjusted by a qualified
installer at the time of installation.
• The LEGACY air shutter is set to its minimum opening
at the factory. A small amount of light soot on the logs is
normal, but soot should not build-up to form “nuggets”.
•
On units converted to burn propane, the air shutter
should be removed.
Note:
Adjust air shutter after flame has reached full
maturity (approximately 20-40 minutes).
CAUTION! Risk of Burns!
Components are HOT. Wear
protective gloves when adjusting shutter.
Air Shutter Settings
Fig 9.1 Air Shutter Natural Gas
Fig 9.2 Air Shutter Removed Propane Gas