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 10.3.
•Slide together to the desired length.
Pilot hole
Figure 10.3 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 10.4.
Figure 10.4 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.
NOTICE: When installing a vent system with an HRC termination cap, all pipe system joints shall be sealed using a silicone sealant with a minimum of 300ºF continuous exposure rating.
•Apply a bead of silicone sealant inside the female outer pipe joint prior to joining sections.
•Only outer pipes are sealed, sealing the inner flue is not required.
•All unit collar, pipe, slip section, elbow and cap outer flues shall be sealed.
C. Secure The Vent Sections
•Vertical runs of pipe must be supported every 8 ft. (2.44 m).
•Horizontal sections must be supported every 5 feet (1.52 m).
•Vent supports or plumbers strap (spaced 120º apart) may be used to support. See figures 10.5 and 10.6.
•Wall shield firestops may be used to provide horizontal support.
•Ceiling firestops have tabs that may be used to provide vertical support.
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.
Figure 10.5 Securing Vertical Pipe Sections
Figure 10.6 Securing Horizontal Pipe Sections
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