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c. Remove burners and brush orifice spuds lightly
using a soft bristle brush.
d. Remove the vent pipe, vent damper, top jacket
panels and flue collector/draft diverter.
e. Brush flueways with wire brush.
f. To the extent possible, inspect inside of vent pipe
and vent damper for obstructions in flow or vent
damper movement. Remove or replace as
necessary.
g. When replacing the flue collector/draft hood, be
certain that the blanket seal between the flue
collector and top section makes a tight seal to
prevent leakage of the products of combustion.
h. Re-install the top of the jacket, vent damper and
vent pipe.
i. Re-install burners.
2. Inspect entire venting system for corrosion, support
and joint integrity. Repair as necessary.
3. Check the pilot and main burner flame. See Figure
9.1. The pilot should provide a steady flame
enveloping 3/8" to 1/2" (1 cm to 1.2 cm) of the
flame sensor. If required, adjust the pilot as stated in
the gas valve manufacturer's instructions. The main
burner flame inner cone should be approximately
1-1/2" (4 cm) high and should have a very sharp,
blue color characteristic.
30
INSTALLATION AND OPERATING INSTRUCTIONS
Figure 9.1: Intermittent Pilot and Main
Burner Flame
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