Use Of Elbows; Measuring Standards - Quadra-Fire TOPAZ-MBK-IPI Installation Manual

D. Use of Elbows
Diagonal runs have both vertical and horizontal vent aspects
when calculating the effects. Use the rise for the vertical
aspect and the run for the horizontal aspect. See Figure 4.4.
Two 45º elbows may be used in place of one 90º elbow. On
45º runs, one foot of diagonal is equal to 8-1/2 in. (216 mm)
horizontal run and 8-1/2 in. (216 mm) vertical run. A length
of straight pipe is allowed between two 45º elbows. See
Figure 4.4.
Figure 4.5 shows the vertical and horizontal offsets for SLP
elbows.
VERTICAL
Effective Length
SLP
Pipe
Inches Millimeters
SLP4 4
SLP6 6
SLP12 12
SLP24 24
SLP36 36
SLP48 48
SLP6A 3 to 6 76 to 152
SLP12A 3 to 12 76 to 305
Figure 4.4
12 Quadra-Fire • TOPAZ-MBK-IPI, TOPAZ-D-PMH-IPI, TOPAZ-D-MBK-IPI, TOPAZ-D-CSB-IPI Installation Manual • 2341-980_R10 • 11/15
RUN
HORIZONTAL
Rise/Run
Inches Millimeters
102 2-3/4
152 4-1/4 108
305 8-1/2 216
610 17 432
914 25-1/2 648
1219 34 864
2-1/8-4-1/4 54-108
2-1/8-8-1/2 54-216
Vent
Type
SLP
Vent Type
70
SLP
Figure 4.5 Vertical and Horizontal Offset for SLP Elbows
E. Measuring Standards
Vertical and horizontal measurements listed in the vent
diagrams were made using the following standards:
• Pipe measurements are shown using the effective length
of pipe. See Figure 11.1 for SLP for information on
effective length of pipe components.
• Horizontal terminations are measured to the outside
mounting surface (flange of termination cap) (see Figure
4.3).
• Vertical terminations are measured to bottom of
termination cap.
• Horizontal pipe installed level with 1/4 inch rise per foot.
Y
Y
X
X
X
Inches Millimeters Inches
5 127 11-3/4
X
X
Inches
11-1/4
Y
Millimeters
298
X
X
X
Millimeters
286