18
139472_Rev_B 8.28.12
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 DE-RATING 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.
I
n Canada
This unit has been tested for installation at high alti-
tudes in accordance with Canadian test standard CAN/
CGA-2.17. THE DE-RATING 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 must
be completed by the installer and applied to the appli-
ance at the time of the conversion. See fig. 19.
Derating procedure
1. Turn off gas supply to the appliance and disconnect
from electrical power source.
2. Remove the Glass Frame. Use the Latch Tool, provided
with the insert, to release the two trunk latches
located under the firebox. Engage the tool with the
latch and pull it forward to disengage the latch from
the glass frame. See fig. 1.
3. Lift the stainless steel burner skirt and media tray as
-
sembly out of the firebox.
4. Loosen the Air Shutter stem wing nut, located under
the firebox. Slide the shutter stem all the way to the
left. See fig. 13.
Figure 19. High Altitude Conversion Notice Label
THIS APPLIANCE HAS BEEN CONVERTED FOR USE
AT AN ALTITUDE OF ______________________
Orifice Size: _______ Manifold Press: ________
Input, BTU/Hr: ________ Fuel Type: _________
Date of Conversion: ______ / _______ / ______
Table 1. High Altitude Orifice Chart.
GAS TYPE
PROPANE
#33
#52
#34
1.55 mm
0 - 2000’
(0 - 619m)
2001’- 4500’
(611 - 1170m)
0 - 2000’
(0 - 619m)
2001’- 4500’
(611 - 1170m)
JØTUL
PART NO.
ELEVATION
ORIFICE
SIZE
220641
045025
224364
220048
PROPANE
NATURAL
GAS
NATURAL
GAS
5. Lift the right end of the burner to disengage the
retainer slot from the retainer bracket, and pull the
burner away from the air shutter and out of the
firebox. See fig. 14.
6. Use a 1/2” open end wrench or deep-well socket to
remove the burner orifice from the brass orifice holder.
Replace with the orifice supplied in this kit and tighten
securely. See fig. 15.
7. Attach the high altitude conversion sticker provided
to the rating plate on the appliance. See figure 19.
8. It may be necessary to adjust the air shutter on the
burner tube. See the Flame Picture / Air Shutter
Adjustment on the next page for more details.
