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High Altitude Adjustment
When installing this appliance at altitude above 2000
feet, it is necessary to compensate for the thinner air
(less volume of air per cubic foot). Higher 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.
In the U.S.
THE DERATING KIT MUST BE INSTALLED BY AN AUTHO-
RIZED SERVICE TECHNICIAN IN ACCORDANCE WITH THE
MANUFACTURER'S INSTRUCTIONS AND ALL CODES AND
REQUIREMENTS OF THE AUTHORITY HAVING JURISDIC-
TION. THE INFORMATION STICKER MUST BE FILLED OUT
BY THE INSTALLER AND APPLIED TO THE APPLIANCE AT
THE TIME OF THE CONVERSION. THE QUALIFIED SERVICE
AGENCY PERFORMING THIS WORK ASSUMES RESPONSI-
BILITY FOR THIS DE-RATING.
In Canada
This unit has been tested for installation at high alti-
tudes in accordance with Canadian test standard CAN/
CGA-2.17. THE DERATING SHALL BE CARRIED OUT IN
ACCORDANCE WITH THE REQUIREMENTS OF THE PRO-
VINCIAL AUTHORITIES HAVING JURISDICTION AND IN
ACCORDANCE WITH THE REQUIREMENTS OF THE CAN1-
B-149.1 AND .2 INSTALLATION CODE.
High Altitude Installations:
2000 ft. to 4500 ft. installations (or 610 m - 1370 m)
See Table 1.
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 information label
included with this kit must be completed by the installer
and applied to the appliance at the time of the conver-
sion. See fig. 1.
Derating procedure
1. Turn off the gas supply and electrical power to the
appliance.
2. Use the Latch Tool to remove the glass frame.
3. RETRACT THE AIR SHUTTERS: Locate the Air Shutter
cables on the floor in each side compartment - push each
cable fully in. This action retracts the shutters and allows
the burner to be disengaged from the firebox. See fig. 3.
4. REMOVE THE BURNER:
Lift out the two steel support shelves, fig. 2, (A),
located at each side of the burner. Grasp the burner
assembly at the sides, lifting it straight up, then tilt
it back to disengage it from the injectors and front
locator studs (B). Pull the assembly up out of the
firebox.
2
ORIFICE SIZE
GAS
#48 - Left
NATURAL
#49 - Right
GAS
#56 - Left
PROPANE
#57 - Right
Table 1. High Altitude Orifice Chart.
THIS APPLIANCE HAS BEEN CONVERTED FOR USE
AT AN ALTITUDE OF ______________________
Orifice Size: _______ Manifold Press: ________
Input, BTU/Hr: ________ Fuel Type: _________
Date of Conversion: ______ / _______ / ______
Figure 1. High Altitude Conversion Notice Label
A
B
Figure 2. Burner removal and replacement.
5. Use a 1/2" deep well socket or open end wrench to
remove the original injectors and replace with the
appropriate ones from this kit as specified in Table 1
above.
6. Attach the high altitude conversion sticker provided to
the rating plate on the appliance. See figure 1.
7. REINSTALL THE BURNER ASSEMBLY. Tilt the back of
the burner down to engage the air shutters with the
injectors. Set the burner in place, engaging the front
brackets with the studs in the firebox floor, fig. 1, (B).
Replace the steel side support shelves, fig. 1, (A).
BE CERTAIN THE BURNER IS LEVEL AND SECURELY
SEATED ON THE FIREBOX FLOOR. Properly located, it
should not be able to move in any direction.
8. Use an electronic gas detector or soap solution to test
for leaks at the pilot head and all gas line joints.
NEVER USE AN OPEN FLAME TO CHECK FOR GAS LEAKS.
JØTUL PART
ELEVATION
NO.
2001'- 4500'
229407 - Left
(611 - 1170 m)
129411 - Right
129466- Left
2001'- 4500'
220977 - Right
(611 - 1170 m)
A
B
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