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7
Venting and Chimneys
A. Assemble Vent Sections
(DVP Only)
Attach Vent to the Firebox Assembly
Note: The end of the pipe sections with the lanced tabs
will face toward the appliance.
Attach the first pipe section to the factory-installed 6 inch
pipe section:
• Lanced pipe end of the starting collar.
• Inner pipe over inner collar.
• Push the pipe section until all lanced tabs snap in place.
• Lightly tug on pipe to confirm it has locked.
• Slide the gasket over the first vent section and place it
flush to the appliance. This will prevent cold air infiltration.
Secure with four screws. See Section 6.
All outer pipe joints must be sealed with 100% silicone
(300 ºF minimum continuous exposure rating) or alumi-
num foil duct tape, 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.
• 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.
Assemble Pipe Sections
Per Figure 7.2:
• Start the inner pipe on the lanced end of section A into
the flared end of section B.
• Start the outer pipe of section A over the outer pipe of
section B.
• Once both vents sections are started, push firmly until
all lanced tabs lock into place.
• Lightly tug on the pipe to confirm the tabs have locked.
It is acceptable to use screws no longer than 1/2 inch (13
mm) to hold outer pipe sections together. If predrilling holes,
DO NOT penetrate inner pipe.
For 90º and 45º elbows that are changing the vent direction
from horizontal to vertical, one screw minimum should be
put in the outer flue at the horizontal elbow joint to prevent
the elbow from rotating. Use screws no longer than 1/2
inch (13 mm). If predrilling screw holes, DO NOT penetrate
inner pipe.
Heat & Glo • PRIMO48, PRIMO48ST, PRIMO60, PRIMO60ST, PRIMO72, PRIMO72ST Installation Manual • 2310-970 Rev. Z • 3/19
Figure 7.1 High Temperature Silicone Sealant
A
B
Figure 7.2
Note:
Make sure that the seams are not aligned to prevent
unintentional disconnection.
CORRECT
INCORRECT
Figure 7.4 Seams
Lances
Figure 7.3
33
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