A.O. Smith BTX 100 Service Handbook page 19

burner assembly installation
17. To re-install the Burner Assembly follow the steps for removal in reverse order.
18. Install a new white fiber gasket between the Burner Adapter and the Heat Exchanger Flange on top of
the water heater. Install a new white fiber gasket between the Burner and the Burner Adapter also. See
Figure 5 on page 9.
19. do not overtighten the 5/16 inch hex head machine screws holding the Burner to the Burner Adapter or
the 1/2 inch nuts that hold the Burner Adapter to the Heat Exchanger Flange on top of the water heater
storage tank.
20. Restore power to the water heater and run it through at least one complete heating cycle before leaving
to ensure it is operating properly.
BURNER SIGHT GLASS
WIRING HARNESS COVER
PLATE AND GASKET.
FOUR 1/2 INCH
NUTS AND STUDS
Servicing should only be performed by a Qualified Service Agent
TWO PHILLIPS HEAD
SCREWS HOLD COVER
PLATE AND GASKET IN
PLACE.
Figure 16
Figure 17
BURNER
GROUND
WIRE
17