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Figure 8
Label Locations
IMPORT
ANT
TH IS B AG WIT H
IN STR U C TION S
EN CLOS ED M U S T
BE A T TACH ED T O
F URN A CE
ADHESIVE POUCH
REPRESENTATIVE DRAWING ONLY, SOME MODELS MAY VARY.
SECTION II: CONVERSION FROM NATURAL
GAS TO PROPANE
BURNER REMOVAL
1. Slide one−piece burner assembly out of slots on sides of
burner box.
2. Remove the flame sensor from the burner assembly.
3. Remove the natural gas orifices from the manifold and
discard.
Figure 9
Burner Assembly
FLAME SENSOR
(BELOW BURNER)
ORIFICE SELECTION/DERATE
WARNING
!
FIRE AND FURNACE DAMAGE HAZARD
Failure to follow this warning could result in personal injury,
death, property damage and/or unit damage.
DO NOT redrill orifices. Improper drilling (burrs, out−of−round
holes, etc.) can cause excessive burner noise and
misdirection of burner flames. This can result in flame
impingement of burners and heat exchangers causing
failures.
6
IGNITER
IGNITER
FLAME ROLL-OUT
SWITCH
FLAME ROLL-OUT
SWITCH
A11226
Specifications subject to change without notice.
Figure 10
Burner Orifice
BURNER
ORIFICE
Refer to conversion kit rating plate 338298−101 to determine
main burner orifice size. (See Figure 12)
Furnace gas input rate on furnace rating plate is for installations
at altitudes up to 2000 ft. (610 M).
In the U.S.A., the input rating for altitudes above 2000 ft. (610
M) must be reduced by 2 percent for each 1000 ft. (305 M)
above sea level.
In Canada, the input rating must be derated by 5 percent for
altitudes of 2000 ft. to 4500 ft. (610 M to 1372 M) above sea
level.
The Conversion Kit Rating Plate accounts for high altitude
derate.
INSTALL ORIFICES
1. Install main burner orifices. Do not use Teflon tape.
Finger−tighten orifices at least one full turn to prevent
cross−threading, then tighten with wrench.
2. There are enough orifices in each kit for largest furnace.
Discard extra orifices.
NOTE: DO NOT reinstall the manifold at this time.
INSTALL MIXER SCREWS
NOTE: There is a set of mixer screws. Use the parts in the bag
marked
"REQUIRED
FOR
CONDENSING GAS FURNACES TO PROPANE GAS"
1. See Figure 11 to verify you have the correct set of mixer
screws.
2. Locate the dimple on each burner venturi tube.
3. If you cannot locate the dimple, refer to Figure 13 for
location of the mixer screw.
4. Drill a 7/64−in (2.8 mm) hole (supplied in kit) in each
dimple.
5. Install a mixer screw in each drilled hole drilling as
straight as possible (i.e. in the center of the gas flow
stream as well as perpendicular to the gas flow stream).
6. The screw head should be flush with the top of the
burner venturi.
Figure 11
Gas Conversion Kit
BURNER
ORIFICE
A96249
THE
CONVERSION
OF
A11294
443 06 4002 00
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