Use Of Elbows - Heat & Glo SL-5 Installation Manual

D. Use of Elbows
Diagonal runs have both vertical and horizontal vent as-
pects 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
DVP or SLP elbows.
VERTICAL
Effective Length
SLP
Pipe
Inches Millimeters
SLP4 4
SLP6 6
SLP12 12
SLP24 24
SLP36 36
SLP48 48 1219
SLP6A 3 to 6 76 to 152
SLP12A 3 to 12 76 to 305
Effective Length
DVP
Pipe
Inches Millimeters
DVP4 4
DVP6 6
DVP12 12
DVP24 24
DVP36 36
DVP48 48 1219
DVP6A 3 to 6 76 to 152
DVP12A 3 to 12 76 to 305
Figure 4.4
18
RUN
HORIZONTAL
Rise/Run
Inches Millimeters
102 2-3/4
152 4-1/4
305 8-1/2
610 17
914 25-1/2
34
2-1/8-4-1/4 54-108
2-1/8-8-1/2 54-216
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
34 864
2-1/8-4-1/4 54-108
2-1/8-8-1/2 54-216
Heat & Glo • SL-5, SL-7, SL-9 Installation Manual • 2392-980 Rev. L • 6/17
Vent
Type
DVP
SLP
Vent Type
70
108
216
432
648
864 Figure 4.5 Vertical and Horizontal Offset for DVP and SLP Elbows
70
X
X
Inches Millimeters
4-1/2 114
5 127
X
Inches
DVP 16-1/4
SLP 11-1/4
Y
Y
Inches Millimeters
17 432
11-3/4 298
X
X
Millimeters
413
286