Vent Diagrams - Heat & Glo SL-550TR-E Installation Manual

G. Vent Diagrams
To replace the fi rst 90º starter elbow with two 45º elbows,
refer to Figure 4.6. All other 90º elbows can be replaced
with two 45º elbows.
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.
• When penetrating a combustible wall, a wall shield
fi restop must be installed.
• When penetrating a combustible ceiling, a ceiling fi restop
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 4.7.
Top Vent—Horizontal Termination—Two 45º Elbows
Installation requirements to replace the fi rst 90º elbow
with two 45º elbows:
1/4 in. max.
(6 mm)

Figure 4.7
Heat & Glo • SL-550/750TR-E, SL-550/750/950TR-IPI-E Installation Manual • 2118-910 Rev. C • 4/16
20
1/4 in. max.
(6 mm)