Heatilator • CNXT Series • 4000-011 Rev N • 11/05
27
A. Assemble Vent Sections
Figure 8.1
Lances
A
B
Figure 8.2
Inner/Outer
A
B
Figure 8.3
Snapped
CORRECT
INCORRECT
Make sure the seams are not aligned to prevent unintentional
disconnection.
Figure 8.4
Seams
8
8
Installing Vent Pipe
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
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.
Assemble Pipe Sections
Insert the inner fl ue of section A into the fl ared inner fl ue of
section B.
Start the outer fl ue of section A over the outer fl ue of section
B (see Figure 8.2).
Note:
The end of the pipe sections with the lances/tabs on
it will face towards the appliance.
Once both inner and outer fl ues are started, press section
A onto section B fi rmly until all lances have snapped into
place. Check to make sure they have snapped together (see
Figure 8.3) and the seams are not aligned (see Figure 8.4).
Tug slightly on section A to confi rm it has completely locked
into place. It is acceptable to use screws no longer than 1
in. (25 mm) to hold outer pipe sections together. If predrilling
holes, do NOT penetrate inner pipe.
For 90° and 45° elbows that are changing the vent direction
from horizontal to vertical, one screw minimum should be
put in the outer fl ue at the horizontal elbow joint to prevent
the elbow from rotating. Use screws no longer than 1 in. (25
mm). If predrilling holes, do NOT penetrate inner pipe.
