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Heatilator • RAVE32-IFT-B, RAVE36-IFT-B, RAVE42-IFT-B Installation Manual • 2619-983 Rev. U • 9/22
B. Assemble Slip Sections
• Slide the inner flue of the slip section into the inner flue
of the pipe section and the outer flue of the slip section
over the outer flue of the pipe section. See Figure 7.3.
• Slide together to the desired length.
Figure 7.3 Slip Section Pilot Holes
Figure 7.4 Screws into Slip Section
Pilot hole
Pilot hole
• Continue adding pipe as necessary following instructions
in “Assembling Pipe Sections.”
NOTICE:
If slip section is too long, the inner and outer
flues of the slip section can be cut to the desired length.
• Maintain a 1-1/2 in. (38 mm) overlap between the slip
section and the pipe section.
• Secure the pipe and slip section with two screws no
longer than 1/2 in. (13 mm), using the pilot holes in the
slip section. See Figure 7.4.
120º
Figure 7.5 Securing Vertical Pipe Sections
C. Secure the Vent Sections
WARNING!
Risk of Fire, Explosion or Asphyxiation!
Improper support could allow vent to sag and separate.
Use vent run supports and connect vent sections per in-
stallation instructions.
DO NOT
allow vent to sag below
connection point to appliance.
• Vertical runs originating off the top of the appliance, with
no offsets, must be supported every 8 feet (2.44 m) after
the maximum allowed 25 feet (7.62 m) of unsupported
rise.
• Vertical runs originating off the rear of the appliance, or
after any elbow, must be supported every 8 feet (2.44
m).
• Horizontal runs must be supported every 5 feet (1.52 m).
• Vent supports or plumbers strap (spaced 120º apart)
may be used to support vent sections. See Figures 7.5
and 7.6.
• Wall shield firestops may be used to provide horizontal
support to vent sections.
• SLP ceiling firestops have tabs that may be used to
provide vertical support.
120º
Figure 7.6 Securing Horizontal Pipe Sections