High Altitude Burner Orifice Sizing
For proper operation at altitudes above 2,000 feet [610 m] , the
gas burner orifice size must be reduced to ensure complete com-
bustion. Heat input derate of 4% per 1,000 feet [305 meters] of
altitude above sea level. Refer to Table 17 or Table 18 .
For IEC models, consult local gas supplier.
Gas Requirements
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58 Part No. 70686701ENR4
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