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Note:
Make sure that the seams are not aligned to prevent
unintentional disconnection.
CORRECT
INCORRECT
Figure 7.4 Seams
NOTICE: When installing a vent system with an HRC
termination cap, all pipe system joints shall be sealed
using a high temperature silicone sealant (300 ºF minimum
continuous exposure rating).
• Apply a bead of silicone sealant (300 ºF minimum
continuous exposure rating) inside the female outer pipe
joint prior to joining sections.
• Only outer pipes are sealed, sealing the inner flue is not
required.
• All unit collar, pipe, slip section, elbow and cap outer
flues shall be sealed.
46
Majestic • MER36MN, MER42MN Installation Manual • 2599-980 Rev. B • 5/23
Assemble Vent Sections (SLP Only)
WARNING! Risk of Fire or Explosion! Vent sections
MUST be installed correctly. Improperly installed vent
sections could leak or cause appliance to overheat.
To attach the first vent component to the starting collars
of the appliance:
• Attach a DVP-SLP24 or DVP-2SL 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.
It is acceptable to use screws no longer than 1/2 in. (13
mm) to hold outer pipe sections together. If predrilling holes,
DO NOT penetrate inner pipe.
Required: Commercial, Multi-family (Multi-level exceed-
ing two stories), or High-Rise Applications
Recommended: Vent Configurations with five or more
pipe joints/pipe connections
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.
All outer pipe joints must be sealed using one of the
methods below, including the slip section that connects
directly to the horizontal termination cap.
• Apply a bead of silicone sealant (300 ºF minimum
continuous 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
continuous exposure rating) to the outside of
connecting joint after joining sections OR
Apply aluminum foil tape (300 ºF minimum continuous
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.
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