Heatilator NDV30-IFT Installation Manual page 40

Note:
Make sure that the seams are not aligned to prevent
unintentional disconnection.
CORRECT
INCORRECT
Figure 7.4 Seams
Assemble Vent Sections (SLP Only)
To attach the first vent component to the starting collars
of the appliance:
• Attach a DVP-SLP24 adapter to the starting collar of the
appliance.
• Lock the vent components into place by sliding the pipe
section onto the collar.
• Align the seam of the pipe and seam of collar to allow
engagement. Rotate the vent component to lock into
place. Use this procedure for all vent components. See
Figure 7.5.
• Slide the gasket over the first vent section and place it
flush to the appliance. This will prevent cold air infiltration.
Caulk with a minimum of 300 ºF continuous exposure
rating may be used to hold the part in place.
• Continue adding vent components, locking each
succeeding component into place.
• Ensure that each succeeding vent component is securely
fitted and locked into the preceding component.
Heatilator • NDV30-IFT, NDV33-IFT, NDV36-IFT, NDV36-IFT-NVR, NDV42-IFT Installation Manual • 2620-980 Rev. C • 8/20
40
Required Commercial, Multi-family (Multi-level exceeding
two stories), or High-Rise Applications
All outer pipe joints must be sealed with 100% silicone
(300 ºF minimum continuous exposure rating), including
the slip section that connects directly to the horizontal
termination cap.
• Apply a bead of silicone sealant (300 ºF minimum con-
tinuous exposure rating) inside the female outer pipe
joint prior to joining sections. See Figure 7.1. OR
Apply a bead of silicone sealant (300 ºF minimum con-
tinuous exposure rating) to the outside of connecting
joint after joining sections OR
Apply aluminum foil tape (300 ºF minimum continu-
ous exposure rating) to the outside of connecting joint
after joining sections. On horizontal pipe runs, it is
recommended that the tape seam is positioned on the
bottom side of the vent pipe.
• Only outer pipes need to be sealed. All unit collar, pipe,
slip section, elbow and cap outer flues shall be sealed
in this manner, unless otherwise stated.
WARNING! Risk of Fire or Explosion! DO NOT break
silicone seals on slip sections. Use care when remov-
ing termination cap from slip pipe. If slip section seals
are broken during removal of the termination cap, vent
could leak.
Note: Align seams to engage pipe,
then rotate counterclockwise to lock
Figure 7.5 Adding Venting Components