Bradford White DS1-50S6FSX - Manual (Page 10)

10
Optional Vent-Air Intake System Installations continued-
4. Place the large end of the three (3) inch (7.6 cm) diameter telescopic
tube(s) through the hole in the ceiling (if applicable). Insert the small end
of the three (3) inch (7.6 cm) diameter telescopic tube(s) into the flue
reducer until seated. With a 1/8 inch diameter drill bit (not supplied), drill
three (3) holes, 120
o apart, through the flue reducer into the three (3) inch
(7.6 cm) diameter telescopic tube(s). Fasten with three (3) #8 sheet metal
screws (supplied). Using the supplied RTV silicone sealant, apply a
sufficient amount to seal all joints. (See Figure 6a or 6b).
IMPORTANT
For ease of installation, it is recommended that none of the joint(s) in the
vent-air intake system are located inside a ceiling. However, if a joint
does end up inside a ceiling, conduct the following steps before installing
the three (3) inch (7.6 cm) diameter telescopic tube(s) into the flue
reducer. Drill three (3) 1/8 inch diameter holes, 120
o apart, through the
three (3) inch (7.6 cm) diameter telescopic tube at the joint that will be
located inside the ceiling. Fasten the joint with three (3) #8 sheet metal
screws (supplied). Apply a sufficient amount of the supplied RTV silicone
sealant to seal the joint.
Figure 5a
Single Telescopic
Tube
Figure 5b
Multiple Telescopic
Tube