Bradford White DH-75T-60FB-3X - Manual (Page 9)

9
Figure 6
7. Extend the four (4) inch (10.2 cm) diameter telescopic tube to its
maximum length and slide the backing plate over it. Place the large end
of the four (4) inch (10.2 cm) diameter telescopic tube through the hole
in the outside wall. Insert the smaller end of the four (4) inch diameter
(10.2 cm) telescopic tube into the flared end of the four (4) inch (10.2
cm) diameter elbow, one (1) inch (2.5 cm) (or until seated). Drill three
(3) 1/8 inch (3.0 mm) diameter holes, 120
o apart, through the four (4)
inch (10.2 cm) diameter elbow into the four (4) inch (10.2 cm) diameter
telescopic tube. Fasten with three (3) #8 sheet metal screws (supplied).
Adjust the overall length of the four (4) inch (10.2 cm) diameter
telescopic tube so that 2-1/2 inches (6.4 cm) extends beyond the outside
wall. Drill three (3) 1/8 inch (3.0 mm) diameter holes, 120
o apart, through
the four (4) inch (10.2) diameter telescopic 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 the joints (See Figure 6).