DuraVent DuraStack Installation User Manual
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TABLE OF CONTENTS
Introduction............................................................................. page. 2
Testing./.listing.information..................................................... page. 2
Section A - General information ................................ page 2
. Features.............................................................................. page. 2
. Application.......................................................................... page. 3
. Surrounding./.enclosure..................................................... page. 3
. .
Boiler.and.engine.exhaust........................................... page. 3
. ........Grease.duct................................................................. page. 3
. System.sizing..................................................................... page. 3
. Part.numbers...................................................................... page. 4
.
Effective.length................................................................... page. 4
. Clearances.......................................................................... page. 4
. Opening.through.combustible.construction........................ page. 4
. Chimney.and.fitting.joint.assembly..................................... page. 5
. Support.methods.and.height.limits..................................... page. 6
. Thermal.expansion............................................................. page. 6
. Chimney.weight.................................................................. page. 7
. Chimney.guying.and.spacing.............................................. page. 7
. Termination.height.............................................................. page. 8
. Multi-engine.exhausts.not.recommended........................... page. 8
Section B - Tees, elbows, increasers .......................... page 9
. Tees..................................................................................... page. 9
. Increaser,.step.or.tapered................................................... page. 10
. Elbows................................................................................ page. 10
. Offsets................................................................................ page. 11
Section C - Structural support and guiding .................... page 12
. Anchor.plate....................................................................... page. 12
.
Length.Anchor.Plate........................................................... page. 12
. Anchor.plate.ventilated....................................................... page. 12
. Wall.support....................................................................... page. 14
. Wall.guide........................................................................... page. 14
. Floor.guide.......................................................................... page. 15
. Suspension.band................................................................ page. 15
. Roof.brace.......................................................................... page. 16
. Guy.wire............................................................................. page. 16
Section D - Roof and wall penetrations ........................ page 17
. Roof./.floor.penetration...................................................... page. 17
. Wall.penetration.................................................................. page. 17.
Section E - Terminations, starting adaptors, drain length
and relief valve ............................................ page 18
. Single.wall.adaptor............................................................. page. 18
. ANSI.flange.adaptor............................................................ page. 18
. Flanged.adaptor.................................................................. page. 18
. DIS/DAS.to.DCT.and.DCT.to.DIS/DAS.adaptor................... page. 18
. Rain.cap.............................................................................. page. 19
. Finishing.cone.................................................................... page. 19
. Flip.top................................................................................ page. 19
. Miter.cut............................................................................. page. 19
. Drain.length........................................................................ page. 20
. Relief.valve......................................................................... page. 20
Section F - Thermal expansion ................................... page 21
. Thermal.expansion............................................................. page. 21
. Expansion.joints.installation............................................... page. 21
. Bellows.expansion.joint...................................................... page. 21
. Adjustable.length................................................................ page. 23
. Variable.length.................................................................... page. 24
Section G - Grease duct application ................................page 26
. Access ...............................................................page. 26
. Use.and.installation.of.individual.parts ........................page. 26
. Horizontal.drain.length ...........................................page. 26
. Nozzle.section ......................................................page. 26
. Square.to.round.adaptor .........................................page. 26
. Grease.tee.90° .....................................................page. 27
. Grease.tee.Y ........................................................page. 27
.
No.tool.access.door ...............................................page. 28
. Fan.adaptor.plate ..................................................page. 29
. Maintenance ........................................................page. 29
Section H - Markings ..................................................page 30
Product reference information ......................................page 32
INTRODUCTION
Duravent. Model. DIS. or. DAS. Chimney. are. cylindrical,. prefabricated,.
modular.venting.systems.incorporating.
.a.unique.extended.inner.flange
.
designed.for.both.quick.assembly.and.pressure.sealing.capability..Model.
DIS.incorporates.a.
2”.of.mineral.fiber.insulation.while.DAS.is.air.insu-
lated..
The.circular.cross.section.and.high.quality.stainless.steel.inner.
flue.construction.provide.for.a.system.with.high.strength-to-weight.ratio.
and.low.friction.losses.
TESTING / LISTING INFORMATION
Duravent.model.DIS.and.DAS.venting.systems.are.listed.with.Intertek.
Testing.Services.(ETL).to.UL/ULC.standards:
U.S.A.
•. UL-103..
.
-.60.in..Positive.Pressure.Chimney
.
-.Building.Heating.Appliance.Chimney
.
-.1400°F.Chimney
•. UL-1978..Grease.Duct.(DIS only).
CANADA
•. ULC/ORD.C959
.
-.540°C.(1000°F)
.
-.760°C.(1400°F)
•. ULC.S604
Models. DIS. and. DAS. are. code. compliant. when. installed. as. per. the.
Installation. Instructions. with. :. NFPA211;. NFPA31;. NFPA37;. NFPA96.
and.CSA-B149
When.installed.in.accordance.with.it’s.installation,.Models.DIS.and.DAS.
comply.with.the.following.codes.:
-.NFPA.(National.Fire.Protection.Association)
-.SBCCI.(Southern.Building.Code.Congress.International)
-.ICBO.(International.Conference.of.Building.Officials)
-.BOCA.(Building.Officials.and.Code.Administrators)
-.ICC.(International.Code.Congress)
SECTION A - GENERAL INFORMATION
These instructions comprise both general guidelines and special re-
quirements for all parts in the product line. Before specifying a design
or beginning an installation please carefully review these instructions.
Maintenance Notes:
Chimney Cleaning: This applies to cleaning other than standard natural
gas chimney applications where minimal maintenance is necessary.
Keep your chimney clean. Access should be provided for the inspec-
tion and cleaning of all sections of the chimney. Have your chimney
cleaned by qualified chimney sweep. It is recommended to use a nylon
chimney brush of the correct size. Do not use a brush that will scratch
the stainless steel interior of the chimney.
FEATURES
Models.DIS.and.DAS.are.prefabricated.modular.venting.systems.design.
for.industrial.and.commercial.applications..It.has.a.unique.extended.in-
ner.flange.for.both.quick.assembly.and.pressure.sealing.capability...It.
is.a.double.wall.construction.with.2”.of.mineral.fiber.insulation.for.DIS.
and.2”.air.space.for.model.DAS...The.inner.flue.is.made.of.high.quality.
stainless.steel.plasma.welded.
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