Installation (Vent-Air Intake System Installation) continued-
Figure 9
7.Extend the three (3) inch (7.6 cm) diameter telescopic tube to its maximum length and slide the backing plate over it. Place the large end of the three (3) inch (7.6 cm) diameter telescopic tube through the hole in the outside wall. Insert the smaller end of the three (3) inch diameter (7.6 cm) telescopic tube into the flared end of the three (3) inch (7.6 cm) diameter
elbow, one (1) inch (2.5 cm) (or until seated). Drill three (3) 1/8 inch diameter holes, 120o apart, through the three (3) inch (7.6 cm) diameter elbow into the three (3) inch (7.6 cm) diameter telescopic tube. Fasten with three (3) #8 sheet metal screws (supplied). Adjust the overall length of the three (3) inch (7.6 cm) diameter telescopic tube so that
(6.4 cm) extends beyond the outside wall. Drill three (3) 1/8 inch diameter holes, 120o apart, through the three (3) inch (7.6 cm) 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 10).
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