Heatilator ND4842MI, Owner'S Manual, Page: 11 / 88

Heatilator • Novus Mesh DV • 4031-552 Rev I • 11/07 11
A. Vent Termination Minimum Clearances
Fire Risk
Explosion Risk
• Do not pack air space with insulation or
other materials.
Maintain vent clearance to combustibles as
speci
fi ed.
WARNING
Failure to keep insulation or other materials
away from vent pipe may cause
fi re.
Measure horizontal clearances from this surface.
Measure vertical clearances from this surface
Figure 4.1 Clearances from Cap Surfaces
(see Figure 4.4 for speci fi c clearances)
4 4
Termination Locations
Fire Risk
Explosion Risk
• Ensure no debris blocks cap.
• Combustible materials blocking cap may
ignite.
• restricted air flow affects burner
operation.
Inspect external vent cap regularly.
WARNING