Figure 17, Effective vent length, Table 7 – Milwaukee LSM40MP-2 User Manual
Page 13

NOTE:.DIAGRAMS.&.ILLUSTRATIONS.ARE.NOT.TO.SCALE.
13
Termination
Flashing And
Storm Collar
Firestop/Spacer
SV8 6/12/24/36/48
Vent Sections
40' Max
(12.2 M)
6' Min
(1.8 M)
1" (25 mm)
Minimum
Clearance to
Combustibles
VERTICAL TERMINATION SYSTEMS (ROOF)
See.
Figure 17 and Figures 25 through 27 on
Page 16.and.their.associated.Vertical.Vent.Tables.
which.illustrate.the.various.vertical.venting.con-
figurations.that.are.possible.for.use.with.these.
appliances...Secure Vent™. pipe. applications.
are. shown. in. these. Figures.. . A. Vertical. Vent.
Table.summarizes.each.system’s.minimum.and.
maximum.vertical.and.horizontal.length.values.
that.can.be.used.to.design.and.install.the.vent.
components.in.a.variety.of.applications.
The.vertical.vent.system.terminates.through.
the.roof..The.minimum.vent.height.above.the.
roof.and/or.adjacent.walls.is.specified.in.ANSI.
Z223.1-(latest.edition).(In.Canada,.the.current.
CAN/CSA-B149.1.installation.code).by.major.
building. codes.. Always. consult. your. local.
codes. for. specific. requirements.. A. general.
guide.to.follow.is.the.Gas.Vent.Rule.(refer.to.
Figure 5 on Page 6).
Vertical (Straight) Installation
(Figure 17)
Determine.the.number.of.straight.vent.sections.
required..4-1/2".(114.mm),.10-1/2".(267.mm),.
22-1/2". (572. mm),. 34-1/2". (876. mm). and.
46-1/2". (1181. mm). net. section. lengths. are.
available.(see.Tables on this page.and.Page
30.- Vent Sections)..Plan.the.vent.lengths.so.
that.a.joint.does.not.occur.at.the.intersection.of.
ceiling.or.roof.joists..Refer.to.the.Vent.Section.
Length.Chart.
Note: Convert inches into metric equivalent
measurement, as follows:
Millimeters (mm) = Inches x 25.4
Centimeters (cm) = Inches x 2.54
Meters (M) = Inches x .0254
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Effective Vent Length
Model
Effective Length
SV4.5L6
4-1/2"
SV4.5L12
10-1/2"
SV4.5L24
22-1/2"
SV4.5L36
34-1/2"
SV4.5L48
46-1/2"
Table 7
Figure 17