High Altitude Adjustment
When installing the Lillehammer in high altitude (above 2500 ft.) locations, it becomes necessary to compensate for the thinner air (less volume of oxygen per cubic foot). High altitudes affect the atmospheric pressure and heat value of gaseous fuels. The lower oxygen content in the air and the lower gas viscosity require the use of a different orifice to achieve efficient, clean combustion at the burner tube.
U.S. Requirements
THE DERATING KIT MUST BE INSTALLED BY AN AUTHORIZED SERVICE TECHNICIAN IN ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS AND ALL CODES AND REQUIREMENTS OF THE AUTHORITY HAVING JURISDICTION. THE INFORMATION STICKER MUST BE FILLED OUT BY THE INSTALLER AND AD- HERED TO THE APPLIANCE AT THE TIME OF THE CONVERSION. THE QUALIFIED SERVICE AGENCY PERFORMING THIS WORK ASSUMES RESPONSIBILITY FOR THIS DERATING.
Canadian Requirements
This unit has been tested for installation at high altitudes in accordance with Canadian test standard
THE DERATING SHALL BE CARRIED OUT IN ACCOR- DANCE WITH THE REQUIREMENTS OF THE PROVIN- CIAL AUTHORITIES HAVING JURISDICTION AND IN ACCORDANCE WITH THE REQUIREMENTS OF THE
For installations from 610 - 1370 meters (2000- 4500 ft.) the orifice size for natural gas is #49 and for propane gas #56. SEE THE HIGH ALTITUDE ORIFICE CHART
See the Rating Plate for additional information. For high altitude installations, consult the local gas distributor or the authority having jurisdiction for proper rating methods. If the installer must convert the unit to adjust for varying altitudes, the informa- tion sticker must be filled out by the installer and adhered to the appliance at the time of the conver- sion.
Derating Procedure:
To derate this unit, install the appropriate orifice as shown in the High Altitude chart.
1.Remove the two ¼” hex head screw that holds the burner tube/log support to the bottom of the stove.
2.Remove the burner tube/log support to expose the main burner orifice.
3.Remove the air deflector shield around the main burner orifice.
4.Remove the orifice and replace with the appropri- ate one from the high altitude kit.
5.Be sure to attach the high altitude conversion sticker provided with the kit to the rating plate on the appliance.
GAS TYPE | ORIFICE | ELEVATION | PART | |
SIZE | NUMBER | |||
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NATURAL | #48 | 129407 | ||
GAS |
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NATURAL | #49 | 129411 | ||
GAS | ||||
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PROPANE | 3/64 | 129409 | ||
GAS | ||||
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PROPANE | #56 | 154373 | ||
GAS | ||||
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Table 3. High Altitude Orifice Chart.
A
included with the High Altitude Kit. Apply this label to the control valve after it has been converted for high altitude.
THIS STOVE HAS BEEN CONVERTED FOR USE AT AN ALTITUDE OF ____________________
Orifice Size _______ Manifold Press: ______
Input BTU/Hr. _____ Fuel Type __________
Date of Conversion ____________________
Figure 21. High Altitude Conversion Label.
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