DuraVent DuraStack Installation - Manual (Page 29)

NOTE:.DIAGRAMS.&.ILLUSTRATIONS.ARE.NOT.TO.SCALE.
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Figure 77 - Fan adaptor
FAN ADAPTOR PLATE (FAN) (DIS ONLY)
1....The.fan.adaptor.is.designed.to.connect.to.an.upblast.fan.mounted.
on.a.roof.curb....
2.. .When.connected.to.an.upblast.fan.(See.Figure 77),.the.plate.mounts.
on.top.of.the.fan.curb.which.supports.the.fan.housing...
3.. .The.plate.may.be.positioned.off.center.within.the.curb.provided.that.
minimum.clearance.to.combustibles.is.maintained...
4.. .In.the.event.that.the.plate.is.positioned.off.center,.trim.off.excess.
plate.material.to.allow.fan.placement...
5.. .Secure.the.plate.to.the.curb.a.minimum.of.three.(3).places.per.side.
with.minimum.#8.x.1-1/4”.wood.screws...You.will.have.to.drill.holes.
in.the.plate.
6.. .The.fan.housing.is.set.on.top.of.the.plate.and.sealed.using.S-650.
sealant.or.an.approved.gasket.supplied.by.the.fan.manufacturer...
7.. .Specify.the.chimney.diameter.and.outside.curb.dimensions.when.
ordering.the.fan.adaptor.plate.
8.. .The.fan.adaptor.plate.can.be.used.as.a.vertical.support...The.maximum.
height.of.grease.duct.supported.by.the.fan.adaptor.plate.is.15’.for.all.
diameters.
WARNING: DO NOT EXCEED THE MAXIMUM LOAD LIMIT OF THE ROOF
CURB OR THE ROOF.
MAINTENANCE
1.. .Grease.duct.is.required.by.NFPA.96.and.many.local.building.codes.
to.be.inspected.and.cleaned.if.necessary.at.specific.intervals...
2.. .Duravent.Model.DIS.Grease.Duct.must.be.inspected.and.cleaned.in.
accordance.with.local.requirements..It.requires.no.additional.internal.
maintenance..
3.. .Duravent.recommends.that.grease.containers.connected.to.drainage.
points.be.emptied.and.washed.out.daily.or.more.often,.if.necessary..
If.needed,.the.drain.nipples.should.be.checked.and.cleaned.whenever.
the.containers.are.emptied.
4.. .Where.the.duct.is.installed.outside.the.building,.the.galvalum.steel.
outer.casing.must.be.primed.and.painted..The.paint.surface.should.
be.maintained.regularly.to.prevent.possible.deterioration.of.the.casing.
surface..The.use.of.stainless.steel.outer.casing.negates.the.need.for.
painting.
NOTE: When solid fuel fired cooking appliances are vented with Model
DIS Grease Duct, creosote and grease may buildup on the inner flue.
This mixture can result in an unusually severe duct fire. To minimize fire
hazard, the duct should be inspected weekly and any residue removed by
cleaning. Additional requirements for solid fuel fired cooking appliances
are outlined in NFPA 96.
Upblast fan
Fan adaptor
Screws
(by others)
Sealant
Fan curb