UTICA BOILERS USC Installation Manual And Operating Instructions page 16

FIGURE 12
2. THE FOLLOWING PROCEDURE SHOULD BE FOLLOWED TO CLEAN AND CHECK
THE FLUE GAS PASSAGEWAYS:
A. Turn off gas to the boiler at the manual gas valve.
B. Remove the jacket front panel. (See figure 12 above.)
C. Disconnect the vent pipe from the vent pipe adapter.
D. Disconnect the air inlet pipe from the coupling. (See figure 13 above for coupling
location.)
E. Remove the air box covers. (See figure 13 above.)
F. Remove the burners from the combustion chamber by raising the burners up from
the manifold orifices and pulling toward the front of the boiler. (See figure 14 below.)
G. Remove the top panel. (See figure 12 above.)
H. Remove the flue collector and venter assembly from the boiler castings by removing
the hold-down screws located on each side of the flue collector. (See figure 15 below.)
I. Remove the baffles from the heat exchanger. (See figure 13 above.)
FIGURE 14
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FIGURE 13
FIGURE 15