Vent Diagrams - Heat & Glo SL-5-IFT Installation Manual

F. Vent Diagrams
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 4.23
and 4.26.
• Top Vented: A maximum of four 90º elbows (or eight 45º
elbows) may be used in any vent configuration. Some
elbows may be installed horizontally. See Figure 4.19.
• 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 4.9.
1/4 in. max.
(6 mm)
Figure 4.9
Heat & Glo • SL-5/5LP-IFT, SL-7/7LP-IFT, SL-9/9LP-IFT Installation Manual • 2632-980 Rev. E • 4/21
Measuring Standards:
Vertical and horizontal measurements listed in the vent
diagrams and clearances for termination were made
using the following standards:
• Pipe measurements are shown using the effective length
of pipe. See Section 12.A (Figure 12.1 for DVP, Figure
12.9 for SLP) for information on effective length of pipe
components.
• Horizontal terminations are measured to the outside
mounting surface (flange of termination
Figure 4.10.
• Vertical terminations are measured to top of last section
of pipe. See Figure 4.11.
• Horizontal pipe installed level with no rise.
Figure 4.10 Measure to Outside Mounting Surface
Figure 4.11 Measure to Top of Last Section of Pipe
cap).
MEASURE TO SHADED SURFACE
(OUTSIDE MOUNTING SURFACE)
See
25