American Water Heater DIRECT VENT GAS WATER HEATER Benutzerhandbuch

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11.  From inside the building, slide the backing plate over the five (5) inch 

(12.7 cm) diameter telescopic tube until it is flush with the wall. Adjust 
the length of the five (5) inch (12.7 cm) diameter telescopic tube and 
insert the end into the flared end of the five (5) inch (12.7 cm) diameter 
elbow one (1) inch (2.5 cm) (or until seated).  Drill three (3) 1/8 inch 
diameter holes, 120

o 

apart, through the five (5) inch (12.7 cm) diameter 

elbow into the five (5) inch (12.7 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 14).