Bradford White DS1-50S6FSX - Manual (Page 12)

12
Optional Vent-Air Intake System Installations continued-
For Multiple Telescopic Tubes
Join the five (5) inch (12.7 cm) diameter telescopic tubes by inserting the
small end of a tube into the large end of another, one (1) inch (2.5 cm) (or
until seated). Drill three (3) 1/8 inch diameter holes, 120
o apart, through
each joint where the five (5) inch (12.7 cm) diameter telescopic tubes are
joined. At this time, DO NOT drill holes where the small and large
sections of the five (5) inch (12.7 cm) diameter telescopic tubes overlap.
Fasten each joint with three (3) #8 sheet metal screws (supplied).
Compress the joined five (5) inch (12.7 cm) diameter telescopic tubes to
minimum length. Place the large end of the joined five (5) inch (12.7 cm)
diameter telescopic tubes through the hole in the ceiling (if applicable).
Place the small end of the joined five (5) inch (12.7 cm) diameter
telescopic tubes over the joined three (3) inch (7.6 cm) diameter
telescopic tubes and plenum collar until seated on top of the
plenum box. Drill three (3) 1/8 inch diameter holes, 120 o apart, through
the joined five (5) inch (12.7 cm) diameter telescopic tubes into the
plenum collar. Fasten with three (3) #8 sheet metal screws (supplied).
(See Figure 7b).
Figure 7a
Figure 7b