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F. Horizontal Termination Requirements
Heat Shield Requirements for Horizontal
Termination
WARNING! Risk of Fire! To prevent overheating and fire,
heat shields must extend through the entire wall thick-
ness.
• DO NOT remove the heat shields attached to the
wall shield firestop and the horizontal termination cap
(shown in Figure 7.14).
• Heat shields must overlap 1-1/2 in. (38 mm) mini-
mum.
There are two sections of the heat shield. One section
is factory-attached to the wall shield firestop. The other
section is factory-attached to the cap. See Figure 7.14.
If the wall thickness does not allow the required 1-1/2 in.
(38 mm) heat shield overlap when installed, an extended
heat shield must be used.
• If the wall thickness is less than 4 in./102 mm (DVP),
the heat shields on the cap and wall shield firestop
must be trimmed. A minimum 1-1/2 in. (38 mm) overlap
MUST be maintained.
• Use an extended heat shield if the finished wall
thickness is greater than 7-1/4 in. (184 mm).
• The extended heat shield may need to be cut to length
maintaining sufficient length for a 1-1/2 in. (38 mm)
overlap between heat shields.
• Attach the extended heat shield to either of the existing
heat shields using the screws supplied with the extended
heat shield. Refer to vent components diagrams in the
back of this manual.
• Rest the small leg on the extended heat shield on top
of the pipe section to properly space it from the pipe
section.
Important Notice: Heat shields may not be field constructed.
Heat & Glo • 6KX-AU Installation Manual • 2589-980 Rev. B • 5/23
Install Horizontal Termination Cap
WARNING! Risk of Fire! The telescoping flue section of
the termination cap MUST be used when connecting vent.
• 1-1/2 (38 mm) minimum overlap of flue telescoping
section is required.
Failure to maintain overlap could cause overheating and
fire.
• Vent termination must not be recessed in the wall. Siding
may be brought to the edge of the cap base.
• Flash and seal as appropriate for siding material at
outside edges of cap.
CAUTION! Risk of Burns! Local codes may require in-
stallation of a cap shield to prevent anything or anyone
from touching the hot cap.
NOTICE: For certain exposures which require superior
resistance to wind-driven rain penetration, a flashing kit
and HRC caps are available. When penetrating a brick
wall, a brick extension kit is available for framing the brick.
Note: When using termination caps with factory-supplied
heat shield attached, no additional wall shield firestop is
required on the exterior side of a combustible wall.
DVP-TRAP1 Exception
See Section 3.C for DVP-TRAP1 exception for top vent,
horizontally terminated installation.
HEAT SHIELD OR
WALL SHIELD
FIRESTOP
CAN BE EXTENDED
INNER VENT
OUTER VENT
Figure 7.14 Venting Through the Wall
HEAT SHIELD
EXTENDED
1-1/2 IN. (38 MM) MIN.
HEAT SHIELD
OVERLAP
SLIP SECTION
SHEATHING
INTERIOR
EXTERIOR
53
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