4-18. Burner Exhaust Duct
a. Description.
The burner exhaust duct is
installed in
the lower left end of
the water heater. It
carries the exhaust
fumes away from the heater.
connections. Be sure there is no obstruction in the duct.
c. Servicing. Clean any obstruction from the duct.
d. Removal.
Twist the exhaust duct to
the left, and remove it
from the opening in
the water heater.
e. Installation. Replace defective duct with a serviceable one, and install it by reversing the procedure in d above.