Williams 0743511 - Manual (Page 7)

5. Place the insulating sheet on the support bracket and attach the bracket with insulation to the wall by tightening the five
screws with washer. (Figure 3) Be sure the bracket is horizontal.
6. Remove the casing from the furnace body, unscrewing the two mounting screws. (Figure 3)
7. Mount the largest tube (diameter 4-inches (101.6 mm) and the gasket on the unit frame with the screws provided.
Insert the smallest tube (diameter 2
½-inches, 63.5 mm) in the combustion chamber. (Figure 4)
Figure 2
Ø
152.4
m
m
Ø
63.5
A + 17.4 mm A + 90.5 mm Ø
101.6
Figure 3
Figure 4
Figure 5
6