DuraVent DuraStack Installation User Manual
Page 14
NOTE:.DIAGRAMS.&.ILLUSTRATIONS.ARE.NOT.TO.SCALE.
14
WALL GUIDE (WG)
1...The.wall.guide.is.used.as.a.lateral.guide.to.resist.lateral.or.side.load.
only,.it.is.not.designed.for.carrying.the.weight.of.a.vertical.chimney...
It.also.ensure.a.minimum.clearance.of.1”.to.combustibles.for.model.
DIS.and.4”.for.model.DAS...See.Figure 27 (wall.guide).
2...The.proper.location.to.install.the.wall.guide.is.immediately.below.a.
locking.band...The.locking.band.must.be.able.to.move.without.inter-
fering.with.the.guide.when.thermal.expansion.occurs...See.Figure 28
(wall.guide.location).
3...The.wall.guide.can.be.installed.with.a.wall.band.extension.for.greater.
clearances.up.to.4-1/4”.for.model.DIS.and.up.to.7-1/4”.for.DAS..See.
Figure 29.(wall.guide.extension).
4...Special.considerations.must.be.taken.when.installing.on.exterior.wall...
A.wall.guide.must.be.installed.between.6’.and.10’.below.the.highest.
wall.support.to.stabilize.the.free.standing.portion.of.the.chimney...Do.
not.install.a.expansion.length.in.this.area.due.to.bending.forces.induced.
by.the.freestanding.portion...See.Figure 30.(special.considerations).
Height Limit - See Section A, table 6 for
maximum height of Wall Support (WS)
Figure 26 - Adjustable wall support (WS)
Adjustable braces
45° Min.
WALL SUPPORT (WS)
1.. The.wall.support.consists.of.an.Anchor.Plate.and.a.prefabricated.frame.
with.mounting.brackets.and.angled.struts.for.bracing.
2.. Used.to.support.the.chimney.in.vertical.runs,.it.maintains.the.chimney.
at.an.adjustable.distance.between.2-1/2”.and.7-1/2”.from.the.wall.(see.
Figure 26).
3.. The.maximum.weight.allowable.on.the.wall.support.depends.if.the.
support.is.attached.to.a.metal.structure.or.a.wood.structure.(see.table
6.for.maximum.chimney.height).
4.. The.installation.begins.by.attaching.the.frame.of.the.wall.support.to.a.
rigid.metal.or.wood.structure...Adjust.the.braces.to.have.a.minimum.
of.45°.angle.from.horizontal...Once.the.frame.of.the.wall.support.is.
fixed.to.a.rigid.structure,.the.installation.is.the.same.as.the.Anchor.
Plate.
Figure 27 - Wall guide (WG)
Figure 28 - Wall guide location
Figure 29 - Wall guide extension
1”
(25mm)
Wall
guide
Wall
guide
MVS
MVS
Wall support
2” to 4-1/4” (51mm to 108mm) (DIS)
5” to 7-1/4” (127mm to 184mm) (DAS)