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Heat & Glo • SL-3X-IFT, SL-5X-IFT, SL-7X-IFT, SL-9X-IFT Installation Manual • 2472-980 Rev. Q • 3/20
G. Vent Diagrams
Figure 4.10 Vent Cap - Generic Fireplace Shown
General Rules:
• SUBTRACT 3 ft. from the total H measurement for each
90º elbow installed horizontally.
• SUBTRACT 1-1/2 ft. from the total H measurement for
each 45º elbow installed horizontally.
•
Rear Vented:
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 4.22
and 4.24.
•
Top Vented:
A maximum of four 90º elbows (or eight
45º elbows) may be used in any vent configuration. See
Figure 4.18. Some elbows may be installed horizontally.
See Figure 4.12 and 4.17.
• Elbows may be placed back to back anywhere in the
system.
•
Any 90º elbow may be replaced with two back to back
45º elbows.
• 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.
• Horizontal termination cap should have a 1/4 inch
downward slant to allow any moisture in cap to be
released. See Figure 4.10.
W
A
LL
1/4 in. max.
(6 mm)