Bradford White DS1-50S6FSX - Manual (Page 17)

17
Optional Vent-Air Intake System Installations continued-
3. For water heaters where the three (3) inch (7.6 cm) diameter elbow is not
yet installed:
Insert the straight end of the three (3) inch (7.6 cm) diameter elbow into
the flue reducer until firmly seated and oriented in the correct direction.
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
elbow. Fasten with three (3) #8 sheet metal screws (supplied). Using the
supplied RTV silicone sealant, apply a sufficient amount to seal the joint.
(See Figure 13).
Figure 13
4. For water heaters where the five (5) inch (12.7 cm) diameter elbow is not
yet installed :
Place the straight end of the five (5) inch (12.7 cm) diameter elbow over
the three (3) inch (7.6 cm) diameter elbow and plenum collar until seated
on top of the plenum box. Make certain that the five (5) inch (12.7 cm)
diameter elbow is oriented in the same direction as the three (3) inch (7.6
cm) diameter elbow and both are oriented in the correct direction. Drill
three (3) 1/8 inch diameter holes, 120
o apart, through the five (5) inch
(12.7 cm) diameter elbow into the plenum collar. Fasten with three (3) #8
sheet metal screws (supplied). (See Figure 14).
Figure 14