Burner Combustion Cones And Gasket - L.B.White I-17 Manual Del Usuario E Instrucciones

42
I-17 / I-40 Manual and Spark Ignition

Burner Combustion Cones and Gasket

Very little servicing is required for the combustion
cones and gasket. Routine cleaning is sufficient to
ensure that the cones remain unblocked by dust
and dirt. Periodic tightening of the the three burner
plate nut ensures that the heater operates to normal
combustion characterisitics.
If not cleaned, the venturi tube and inner combus-
tion cone will become blocked, creating poor com-
bustion, gas backflashing through the air housing,
or outages. This may require some disassembly if
the blockage cannot be removed by normal (air)
cleaning methods. Refer to the following instruc-
tions.
Outer Cone Removal - I-17
a. Using pliers,straighten the tab on the truss clip.
See Fig. 39. The clip will drop to the cone side of
the heater.
FIG. 39
Truss Clip
Nuts and
Tab
Spacers
b. Pull the outer cone from the retainer slots in the
burner plate. See Fig. 40.
FIG. 40
Owner's Manual • I-17 / I-40
Outer Cone Removal - I-40
a. Using needle nose pliers or a standard screwdriver,
carefully pry up the outer combustion cones tabs
folded under the burner plate. See Fig. 41.
FIG. 41
b. Rotate the outer cone slightly so the notches in the
cone flange align to the formed retainers on the
burner plate. Lift and pull the cone from the burner.
plate. See Fig. 42.
FIG. 42
3. Regardless of heater model, inspect the inner cone.
See Fig. 43. If the cone is in good condition, (cone
Slot
weld seam not split or tip is not missing) then clean
using the compressed air method. A bottle brush may
also be run down the venturi tube to force out any
blockages. Using air at the cone end, blow back any
debris out the control end of the venturi tube.
Outer
Cone
Tabs
Notch
Retainer