Securing the Vent Sections
Vertical Sections
Vertical sections of pipe must be supported every 8 feet after the 25 foot maximum unsupported rise. The vent sup- port or plumber’s strap (spaced 120° apart) may be used to do this (see Figure 8.8).
Horizontal Sections
Horizontal sections of vent must be supported every 5 feet with a vent support or plumber’s strap.
B. Disassembly of Vent Sections
To disassemble any two pieces of pipe, rotate either section (see Figure 8.10), so that the seams on both pipe sections are aligned (see Figure 8.11). They can then be carefully pulled apart.
WARNING
Fire Risk. Explosion Risk. Combustion Fume Risk.
Use vent run supports per installation instructions.
Connect vent sections per installation instructions.
•Maintain all clearances to combustibles.
•Do NOT allow vent to sag below connection point to appliance.
Improper support may allow vent to sag or separate.
Figure 8.8 Securing Vertical Pipe Sections
Figure 8.9 Securing Horizontal Pipe Sections
Figure 8.10 Rotate Seams for Disassembly
Figure 8.11 Align and Disassemble Vent Sections
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