Installing Vent Pipe; Assemble Vent Sections - Heatilator ND3933 Owner's Manual

8 8

Installing Vent Pipe

A. Assemble Vent Sections
WARNING
Fire Risk
Explosion Risk.
Do not mix pipe, fi ttings or joining methods
from different manufacturers
WARNING
Fire Risk
Exhaust Fumes Risk
• Overlap pipe slip sections at least
1-1/2 in.
• Use pilot holes for screws.
• Screws must not exceed 1 in. long.
• Pipe may separate if not properly
joined.
WARNING
Fire Risk
Explosion Risk
If slip section seals are broken during the
removal of the termination cap, gas will leak
and a fi re or explosion may occur.
do not break silicone seals on slip sections.
30 Heatilator • Novus DV • 4031-550 Rev G • 11/07
Attaching Vent to the Firebox Assembly
To attach the fi rst pipe section to the collars, slide the male
end of the inner vent of the pipe section over the inner collar
on the fi rebox assembly. At the same time, slide the outer
fl ue over the outer collar on the appliance. Push the pipe
section into the appliance collar until all the lances (see Fig-
ure 8.1) have snapped in place. Tug slightly on the section
to confi rm it has completely locked into place.
Commercial, Multi-family (multi-level exceeding
two stories), or High-rise Applications
For installation into a commercial, multi-family (multi-level
exceeding two stories), or high-rise application: All outer
pipe joints must be sealed with high temperature silicone,
including the slip section that connects directly to the hori-
zontal termination cap.
• Apply a bead of silicone sealant inside the female outer
pipe joint prior to joining sections. See Figure 8.1.
• Only outer pipes are to be sealed. Do not seal the inner
fl ue. All unit collar, pipe, slip section, elbow and cap outer
fl ues shall be sealed in this manner, unless otherwise
stated.
Note: The end of the pipe sections with the lances/tabs on
it will face towards the appliance.