Bradford White DH-75T-60FB-3X - Manual (Page 23)

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Installation (Vent-Air Intake System Installation) continued-
Figure 14.
11. From inside the building, slide the backing plate over the six (6) inch
(15.2 cm) diameter telescopic tube until it is flush with the wall. Adjust
the length of the six (6) inch (15.2 cm) diameter telescopic tube and
insert the end into the flared end of the six (6) inch (15.2 cm) diameter
elbow one (1) inch (2.5 cm) (or until seated). Drill three (3) 1/8 inch (3.2
mm) diameter holes, 120
o apart, through the six (6) inch (15.2 cm)
diameter elbow into the six (6) inch (15.2 cm) diameter telescopic tube
and through the tubes where the small and large sections overlap.
Fasten with three (3) #8 sheet metal screws (supplied). Using the
supplied special RTV silicone sealant, apply a sufficient amount to seal
all joints (See Figure 15).
Figure 15.
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