Vent Diagrams - Heat & Glo 6KX-AU Installation Manual

E. Vent Diagrams
General Rules:
• When penetrating a combustible wall, a wall shield
firestop must be installed.
• When penetrating a combustible ceiling, a ceiling firestop
must be installed.
• Horizontal runs of vent do not require vertical rise;
horizontal runs may be level.
• It is recommended that the horizontal termination cap
have a 1/4 inch (6 mm) downward slant to allow any
moisture in cap to be released. See Figure 4.8.
If venting configuration differs from the vent diagrams on
the following pages (Figure 4.12-4.27), these rules also
apply:
• SUBTRACT 3 ft (914 mm) from the total H measurement
for each 90º elbow installed horizontally.
• SUBTRACT 1-1/2 ft (457 mm) from the total H
measurement for each 45º elbow installed horizontally.
• A maximum of three 90º elbows (or six 45º elbows) may
be used in any vent configuration. Some elbows may be
installed horizontally. See Figure 4.13.
• Elbows may be placed back to back anywhere in the
system.
•
Any 90º elbow may be replaced with two back to back
45º elbows.
• 2 x 45° elbow jog directly off the top of the fireplace is
allowed but has no V or H value and DOES NOT count
towards total elbow count.
1/4 in. max.
(6 mm)
Figure 4.8
28
Heat & Glo • 6KX-AU Installation Manual • 2589-980 Rev. B • 5/23
WARNING
Fire Risk. Explosion Risk.
Do NOT pack insulation or other combustibles
between ceiling firestops.
• ALWAYS maintain specified clearances around
venting and firestop systems.
• Install wall shield and ceiling firestops as speci-
fied.
Failure to keep insulation or other material away
from vent pipe may cause fire.
WARNING
Fire Risk.
• When using DVP-HRC-SS and DVP-HRC-ZC-
SS termination caps on top vented fireplaces, a
6 inch (152 mm) minimum vertical vent section
is required before installing first elbow.