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Heatilator • CD4236IFTR, CD4236IFTLR, CD4842IFTR, CD4842IFTLR Installation Manual • 2511-980 Rev. M
• 8/21
C. 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 7.6.
• Slide together to the desired length.
Figure 7.6 Slip Section Pilot Holes
Figure 7.7 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 7.7.
NOTICE:
When installing a vent system with an HRC
termination cap, all pipe system joints shall be sealed
using a high temperature silicone sealant (300 ºF minimum
continuous exposure rating).
•
Apply a bead of silicone sealant (300 ºF minimum
continuous exposure rating) 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.
