Heatilator ND4842MI, Owner'S Manual, Page: 33 / 88

Heatilator • Novus Mesh DV • 4031-552 Rev I • 11/07 33
Secure the Vent Sections
Vertical sections of pipe must be supported every 8 ft after
the 25 ft maximum unsupported rise. The vent support or
plumber’s strap (spaced 120° apart) may be used to do this
(see Figures 8.8 and 8.9).
Horizontal sections of vent must be supported every 5 ft with
a vent support or plumber’s strap.
B. Disassemble 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.
Figure 8.8 Securing Vertical Pipe Sections
Figure 8.9 Securing Horizontal Pipe Sections
Fire Risk
Explosion Risk
Asphyxiation 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.
WARNING
Figure 8.10 Rotate Seams for Disassembly
Figure 8.11 Align and Disassemble Vent Sections