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 10.5.
•Slide together to the desired length.
Pilot hole
Figure 10.5 Slip Section Pilot Holes
•Maintain a
•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 10.6.
Figure 10.6 Screws into Slip Section
•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.
C. Secure the Vent Sections
•Vertical runs must be supported every 8 ft. (2.44 m) after the 25 ft. (7.62 m) maximum unsupported rise.
•Horizontal sections 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 10.7 and 10.8.
•Wall shield firestops may be used to provide horizontal support vent sections.
WARNING! Risk of Fire, Explosion or Asphyxiation! Improper support may 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.
120º
Figure 10.7 Securing Vertical Pipe Sections
120º
Figure 10.8 Securing Horizontal Pipe Sections
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