Lennox RAVELLE 30 Installation And Operation Instructions Manual page 18

Vent Considerations
Twist-lock procedure:
of pipes and fittings, are designed to slide straight onto the male ends
of adjacent pipes and fittings by orienting the four pipe indentations so
they match and slide into the four entry slots on the male ends (see
Figure 15) . Push the pipe sections completely together, then twist-lock
one section clockwise approximately one-quarter turn until the two sec-
tions are fully locked . The female locking lugs will not be visible from
the outside on the pipe or fittings . They may be located by examining
the inside of the female ends .
Sealant
Figure 15
18
Four indentations, located on the female ends
Female
Locking
Lugs
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Supports:
Horizontal runs of vent must be supported every three feet .
Wall straps are available for this purpose .
Pipe Sealing:
the first pipe joint attaching the pipe to the flue collar on the fireplace . If
Dura-Vent ® is used, then the pipe must be sealed as follows: seal both
the inner and outer pipes with a high temperature silicone sealant rated
for at least 600º F (commonly known as "RTV") . Run a 1/8" (3 mm) bead
of silicone around the outside of the male end of the outer sleeve . Run a
1/8" (3 mm) bead of silicone about 1/4" (6 mm) from the end of the male
inner pipe, which is found in the pipe to be attached above . Twist-lock
the pipes or fittings together .
Male
Locking
Lugs
If Secure Vent™ is used, then sealant is required at only