12
A13057
Fig. 21 -- Conversion Kit Rating Plate
INSTALL ORIFICES
1. Install main burner orifices. Do not use Teflon tape. Fin-
ger-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 are 2 sets of mixer screws. One set is for
Condensing gas furnaces, the other set is for Non-condensing gas
furnaces. Use only the parts in the bag marked
“REQUIRED
FOR THE CONVERSION OF NON--CONDENSING GAS
FURNACES TO PROPANE GAS”
See Fig. 22 to verify you have the correct set of mixer screws.
1. Locate the dimple on each burner venturi tube. If you can-
not locate the dimple, refer to Fig. 23 for location of the
mixer screw.
2. Drill a 5/64--in (1.9 mm) hole in each dimple with a sup-
plied drill bill.
3. 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).
4. The screw head should be flush with the top of the burner
venturi.
A11397
Fig. 22 -- Gas Conversion Kit
A06432
Fig. 23 -- Mixer Screw Location
REINSTALL BURNER ASSEMBLY
To reinstall burner assembly:
1. Attach flame sensor to burner assembly.
2. Install HSI and bracket to burner assembly.
3. Insert one-piece burner in slot on sides of burner box and
slide burner back in place.
4. Reattach HSI wires to HSI.
5. Verify igniter to burner alignment.
6. Verify igniter to burner alignment.
For Silicon Nitride igniters, see Fig. 24 and 25.
For Silicon Carbide igniters, see Fig. 26.
Reattach Flame sensor wire to Flame Sensor.
