Simpson DV-GS User manual

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APPLICATION
TheseinstructionsapplytotheSimpsonDura-VentDirectVentSystem,Model
DV-GS.Thisventingsystem,incombinationwiththegasappliance,hasbeentested
andlistedasadecorativegasappliancesystem,orasadirectventheatersystem
byamajortestingagencysuchasUL,AGA,CGA,OmniorWarnockHersey.
Checkthemanufacturer'sratingplateandinstructionmanualtoconfirmthatthe
SimpsonDura-Ventdirectventsystemisapprovedforuseonthebrandname
applianceyouhaveselected.
IMPORTANT
Readallinstructionscarefullybeforestartingtheinstallation. Failuretofollowthese
instructionsmaycreateafireorothersafetyhazard,andwillvoidthewarranty. Be
suretochecktheappliancemanufacturer'sinstallationinstructionsforspecific
ventingandclearancetocombustiblerequirements,whichmayvaryfromone
appliance to another. Do not extend the venting system vertically or
horizontally in excess of the distance prescribed in the appliance
manufacturer'sinstallationinstructions.
INSTALLATIONPRECAUTIONS
TheSimpsonDura-VentDirectVentSystemisanengineeredproductthathasbeen
designedandtestedforusewithanapprovedlistofdirectventfireplaces. The
SimpsonDura-Ventwarrantywillbevoided,andseriousfire,health,orothersafety
hazardsmayresultfromanyofthefollowingactions:
•InstallationofanydamagedDirectVentcomponent.
•UnauthorizedmodificationoftheDirectVentSystem
•Installationofanycomponentpartnotmanufacturedorapprovedby
SimpsonDura-Vent.
•InstallationotherthanasinstructedbySimpsonDura-Ventandthe
appliancemanufacturer.
VENTING INSTRUCTIONS
FOR DIRECT VENT
FIREPLACES
1

2
Consultyourlocalbuildingcodesbeforebeginningtheinstallation.
WARNING
• Always maintain required clearances (air spaces) to nearby
combustiblestopreventafirehazard. Donotfillairspaceswithinsulation.
Besuretochecktheappliancemanufacturers'sinstallationinstructionsforminimum
clearancerequirementsbetweentheouterwallsof
the vent pipe and nearby combustible surfaces. Be sure to check the vent
terminationclearancerequirementsfromdecks,windows,soffits,gasregulators,
airsupplyinlets,andpublicwalkways,asspecifiedintheseinstallation
instructionsandlocalbuildingcodes.
• The fireplace and vent system must be vented directly to the
outsideofthebuilding. Eachdirectventfireplacemustuseit'sownseparatevent
system. Commonventsystemsareprohibited.
SAFETYPRECAUTIONSFORTHEINSTALLER
•Wearglovesandsafetyglassesforprotection.
•Exerciseextremecautionwhenusingladdersoronrooftops.
•Beawareofelectricalwiringlocationsinwallsandceilings.
PARTSLIST
TheSimpsonDura-VentDirectVentSystemoffersacompletelineofcomponent
partsforinstallationofbothhorizontalandverticalinstallations. Thegalvanizedpipe
and fittings are used for concealed locations such as attics, or spaces where
corrosionisafactor,suchasabovetheroofline. Snorkelterminationsareavailable
forapplicationswhichmayrequireverticalriseonthebuildingexterior.

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PARTSLIST
Number Description
7" x 4" 8" x 5"
11008 1208 6"PipeLength
11007 1207 9"PipeLength
11006 1206 12"PipeLength
11004 1204 24"PipeLength
11003 1203 36"PipeLength
11002 1202 48"PipeLength
11017 1217 17"to24"Pipe,Adjustable
11045 1245 45°Elbow
11090 1290 90°Elbow
11043 1243 Flashing,0/12to6/12RoofPitch
11044 1243S Flashing,7/12to12/12RoofPitch
11053 1253 StormCollar
11063 1263 CeilingFirestop
11042 1242 WallFirestop
11088 1288 WallStrap
11081 1281 SnorkelTermination(36")
11082 1282 SnorkelTermination(14")
11084 1284 Horiz.SquareTermination
11030 1230 Horiz.RoundTermination
11080 1280 VerticalTermination
11091 1291 Vert.Termination,HighWind
11050 1250 VinylSidingStandoff

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FIGURE 3
45° ELBOW
PIPE
SECTION
PIPE
SECTION
CEILING
FIRESTOP
FIGURE 1
ROUND
HORIZONTAL
TERMINATION
SQUARE HORIZONTAL
TERMINATION
45° ELBOW
PIPE SECTION
WALL
FIRESTOPS
WALL FIRESTOP
WALL
FIRESTOP
45° ELBOW
PIPE
SECTION
90° ELBOW
WALL
FIRESTOPS
ROUND
HORIZONTAL
TERMINATION
FIGURE 2
SQUARE
HORIZONTAL
TERMINATION
STORM
COLLAR
VERTICAL
TERMINA-
TION
FLASHING
PIPE
SECTION

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PLANNINGYOURINSTALLATION
TherearetwobasictypesofDirectVentSysteminstallations. Checktheappliance
manufacturer'sinstallationinstructionstoconfirmwhattypesarepermitted,andalso
checkforanyventingrestrictionssuchasmaximumhorizontalrun,andmaximum
verticalrise. Thetwotypesofinstallationsare:
•Horizontal Termination(Fig1andFig2)
•Vertical Termination(Fig3)
Whenplanningyourinstallation,itwillbenecessarytoselecttheproperlengthof
ventpipeforyourparticularrequirements. Forhorizontalinstallations,checkthe
appliancemanufacturers'sinstallationsinstructionstodeterminetheminimum
clearancefromtherearoftheappliancetothewall. Itisalsoimportanttonotethe
wallthickness. Selecttheamountofverticalrisedesiredfor"vertical-to-horizontal"
type installations. To determine the length of vent pipe required for vertical
installations,measurethedistancefromtheapplianceflueoutlettotheceiling,the
ceilingthickness,theverticalriseinanatticorsecondstory, andallowforsufficient
ventheightabovetheroofline. Fortwo-storyapplications,firestopsarerequired
ateachfloorlevel. Ifanoffsetisneededintheattic,additionalpipeandelbowswill
berequired.
HORIZONTALINSTALLATION
Step1. Setthefireplaceinit'sdesiredlocation. Checktodetermineifwall
studsorroofraftersareinthewaywhentheventingsystemisattached. Ifthisis
thecase,youmaywanttoadjustthelocationoftheappliance.
Step2. DirectVentpipeandfittingsaredesignedwithspecialtwist-lock
connections. Toconnecttheventingsystemtotheapplianceflueoutlet,atwist-lock
applianceadaptorisrequired. Withsomebrandsofappliances,theSimpsonDura-
Ventadaptorwillbebuiltintotheapplianceatthefactory. Withotherbrands, it
willbesuppliedbythe appliancemanufacturer,forinstallationinthefield. Assemble
thedesiredcombinationofpipeandelbowstotheapplianceadaptorwithpipe
seamsorientedtowardsthewallorfloor,asmuchoutofviewaspossible. Ifthe
applianceadaptorisnotbuiltintotheapplianceatthefactory,itmaybepreferable
toassemblethepipeandelbowstotheadaptorpriortomountingtheadaptoronto
thefireplace. Inthismanner,thepipeand45°elbowassemblymaybeproperly

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twist-lockedandrotatedtofacethewalltermination,withfinalpositioningofthe
ventpipeassemblydeterminedbythemountingorientationoftheapplianceadaptor
ontothefireplace. Figure4showssomeofthepossibleventpathwayoptions.
Consulttheappliancemanufacturerforanyrestrictions.
Notes:
(1)Twist-lockprocedure: Fourindentations,locatedonthefemaleends
ofpipesandfittings,aredesignedtoslidestraightontothemaleendsofadjacent
pipesandfittings,byorienting
thefourpipeindentationssothey
match and slide into the four
entryslotsonthemaleends.(Fig
5). Pushthepipesectionscom-
pletelytogether,thentwist-lock
onesectionclockwiseapproxi-
matelyone-quarterturn,untilthe
twosectionsarefullylocked.
SEALANT
(OPTIONAL
UNLESS
REQUIRED BY
APPLIANCE
MANUFACTURER)
FEMALE LOCKING
LUGS
MALE
LOCKING
LUGS
Fig 5
Fig 4
(2) Horizontal runs of
vent must be supported every
three feet. Wall Straps are
USE EITHER
SQUARE
HORIZONTALOR
ROUND
HORIZONTAL
TERMINATION
CAPS

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availableforthispurpose.
(3) Sealant is optional, unless
specified by the appliance
manufacturer. Shouldyouelecttouse
sealant,itisonlynecessaryontheouter
tube of the GS Pipe. Run a 1/8-inch
widebeadofsealantaroundthemale
end of the outer sleeve, as shown in
Figure5, and twist-lockthe pipesor
fittingstogether.
Step 3. With the adaptor and
pipeattachedtothefireplace,slidethe
fireplaceintoit'scorrectlocation,and
markthewallforasquareholeofthe
appropriatesize. Usea10"x10" square
holefor7"x4"pipeandusean11"x11"
squareholefor8"x5"pipe. Thecenter
ofthesquareholeshouldlineupwith
thecenterlineofthehorizontalpipe,asshowninFigure6. Cutandframethesquare
hole in the exterior wall where the vent will be terminated. If the wall being
penetrated is constructed of noncombustible material, i.e. masonry block or
concrete,aholewithzeroclearancetothepipeisacceptable.
Notes:
(1) Thehorizontalrunofventmustbelevel, orhavea1/4-inchriseforevery
1footofruntowardsthetermination. Neverallowtheventtorundownward. This
couldcausehightemperaturesandmaypresentthepossibilityofafire.
(2)Thelocationofthehorizontalventterminationonanexteriorwallmust
meet all local and national building codes, and must not be easily blocked or
obstructed. Terminationclearancesareasfollows:
(a)Clearanceabovetheground, veranda,porch,deckorbalcony-12
inchesminimum.
(b) Clearanceto a window or doorthatmaybeopened-9inches
minimum.
(c) Verticalclearancetoaventilatedsoffitlocatedabovethe
terminationwithahorizontaldistanceof2feetfromthe
centerlineofthetermination-18inchesminimum.
(d) Clearancetoanunventilatedsoffit- 12inchesminimum.
CENTER
OF HOLE
Fig 6

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(e) Clearance to an
outsidecorner-astested.
(f) Clearancetoaninside
corner-astested.
(g) Not to be installed
above a meter/regulator
assembly within 3 feet
horizontally from the
centerlineoftheregulator.
(h)Clearancetoaservice
regulatorventoutlet-6feet
minimum.
(i) Clearance to non-
mechanicalairsupplyinlet
to a building or the
combustionairinlettoany
otherappliance-12inches
minimum.
(j) Clearance to a
mechanicalairsupplyinlet-
6feetminimum.
(k) Clearance above a
paved sidewalk or paved
drivewaylocatedonpublic
property-refertolocalcode.
(l) Clearance under a
veranda, porch, deck or
balcony -12 inches
minimum.
Forinstallationsrequiringa
verticalriseontheexterior
ofthebuilding,14-inchand36-inchtallSnorkelTerminations,asshowninFigure
7 are available. Follow the same installation procedures as used for standard
SquareHorizontalTerminations. IftheSnorkelTerminationmustbeinstalled
belowgrade,(i.e.basementapplication),properdrainagemustbeprovidedto
preventwaterfromenteringtheSnorkelTermination. RefertoFigure8. Donot
attempttoenclosetheSnorkelwithinthewall,oranyothertypeofenclosure.
12 INCHES
MINIMUM
SNORKEL
SNORKLE
12 INCHES
MINIMUM
ADEQUATE
DRAINAGE
Fig 8
Fig 7

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Step 4. For a Square Horizontal Vent
Termination,placetheventcap inthecenterof
thesquareholeand attachtotheexteriorwall
withthefourwoodscrewsprovided. Before
attachingtheVentTerminationtotheexterior
wall,runabeadofnon-hardeningsealantaround
it'soutsideedges,soastomakeasealbetween
it and the wall. If you are using a Round
HorizontalVentTermination,placeanexterior
WallFirestopoverthesquarehole. Runabead
ofnon-hardeningsealantaroundtheedgesof
theWallFirestop,andattachtheWallFirestop
tothewallwiththefourwoodscrewsprovided.
Thearrowontheventcapshouldbepointing
up. Insurethatproperclearancestocombustible
materialsaremaintained. (Fig9)
Notes:
(1) The four wood screws provided
shouldbereplaced withappropriatefastenersforstucco,brick,concrete,orother
typesofsidings.
(2)Forbuildings
withvinylsiding,aVinyl
SidingStandoff,should
beinstalledbetweenthe
vent cap and the wall.
(Fig10) AttachtheVi-
nylSidingStandofftothe
HorizontalVentTermi-
nation. TheVinylSiding
Standoffpreventsexces-
siveheatfrompossibly
melting thevinylsiding
material. Note that the
SquareHorizontalVent
Termination bolts onto
theflatportionoftheVi-
nyl Siding Standoff,
Fig 9
WOOD
SCREWS
WOOD
SCREWS
Fig 10
BOLT
(4) REQ
CUTVINYLSIDINGAWAY
TO FITSTANDOFF
NUT
(4) REQ
VINYL
SIDING
STANDOFF
ROUND
TERMINA-
TION CAP
WOOD SCREW
(4) REQ

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(shadedareashowninFigure10),sothatan
airspacewillexistbetweenthewallandthe
Vent Termination. The Round Horizontal
VentTerminationdoesnotneedanexterior
WallFirestopwhenusingaVinylSidingStand-
off.Simplyslidetheroundtermination through
theVinylSidingStandoffinordertoconnect
totheventpiping. Besurethatallofthevent
capmeshistotheexteriorofthewall.
Step5. Beforeconnectingthehorizontal
runofventpipetotheventtermination,slidetheWallFirestopovertheventpipe
ontheinteriorsideofthewall.
Step6. Slidetheapplianceandventassemblytowardsthewall,carefully
insertingtheventpipeintotheventcapassembly. Itisimportantthattheventpipe
extendintotheventcapsufficientdistancesoastoresultinaminimumpipeoverlap
of 1-1/4inches. Securetheconnectionbetweentheventpipeandtheventcap.
Forsquarecaps,attachthe twosheetmetalstrips extendingfromtheventcap
assemblyinto the outerwall of thevent pipe. Use thetwo sheet metal screws
providedtoconnectthesheetmetalstripstothepipesection. Forroundcaps,use
threesheetmetalscrewsandattachcaptopipesection. (Fig11)
Step7. Slide the Wall Firestop up to the wall surface and attach with
screwsprovided. (Fig12)
Fig 11
STRAP
WOOD
SCREWS
Fig 12
SQUARE TERMINATION ROUND TERMINATION
WALL
FIRESTOP
SHEET
METAL
SCREW
WALL
FIRESTOP
WALL FIRESTOP
SHEET
METAL
SCREW
FOLD
STRAP
HERE
1-1/4 "

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VERTICAL
TERMINATION
Step 1. Check the appliance
manufacturers'sinstallationinstruc-
tionsforrequiredclearances(air
spaces) to combustibles when
passing through ceilings, walls,
roofs,enclosures,atticrafters,or
othernearbycombustiblesurfaces.
Donotpackairspaceswithinsu-
lation. Check the appliance
manufacturer's instructions for
maximumverticalriseofthevent-
ingsystem,andanymaximumhori-
zontaloffsetlimitations. (Fig13)
Step 2. Set the fireplace in it's
desiredlocation. Dropaplumbob
downfromtheceilingtotheposition
oftheapplianceflueexit,andmark
the location where the vent will
penetrate the ceiling. Drill a
smallholeatthispoint. Next,
dropaplumbbobfromtheroof
totheholepreviouslydrilledin
theceiling,andmarkthespot
where the vent will penetrate
theroof. Determineifceiling
joists, roof rafters, or other
framingwillobstructtheventing
system. You may wish to
relocate the appliance, or to
offset, to avoid cutting load-
bearing members.
Step3. To installthe
CeilingFirestopinaflatceiling,
CEILING
JOISTS
Fig 13
CEILING
FIRESTOP
Fig 14
FRAMING
OPTIONAL
HIGH-WIND
TERMINATION
CAP
CLEARANCES
ASDEFINED
BY APPLIANCE
MFG
1-1/2 INCH LONG
WOOD SCREWS
CLEARANCES
ASDEFINED
BY APPLIANCE
MFG

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cut a square hole in the ceiling,
(10"x10" square for 7" x 4" pipe,
11"x11" square for 8" x 5" pipe)
centeredontheholedrilledinStep2.
FrametheholeasshowninFig 14.
Step4. IftheTwist-lockadaptor
hasnotbeeninstalledonthefireplace
bythemanufacturer,installitnowin
accordance with the fireplace
instructionmanual.
Step 5. Assemble the desired
lengths of Galvanized Pipe and
Elbowsnecessarytoreachfromthe
ApplianceAdaptorupthroughthe
CeilingFirestop. InsurethatallPipe
andElbowconnectionsareintheir
fullytwist-lockedposition.
Step 6. Cut a hole in the
roofcenteredonthesmalldrillhole
placed in the roof in Step 2. The
holeshouldbeofsufficientsizeto
meettheminimumrequirementsfor
clearance to combustibles, as
specified by the appliance
manufacturer.Continuetoassemble
lengths of Pipe and Elbows
necessarytoreachfromtheCeiling
Firestopupthroughtheroofline.
DIMENSION "H"
OBTAINED
FROM TABLE 1
H
Fig 16


TABLE 1
ROOF PITCH MINIMUM HEIGHT
FEET METERS
FLAT TO 7/12 10.3
OVER 7/12 TO 8/12 1.5 0.46
OVER 8/12 TO 9/12 20.61
OVER 9/12 TO 10/12 2.5 0.76
OVER 10/12 TO 11/12 3.25 0.99
OVER 11/12 TO 12/12 41.22
OVER 12/12 TO 14/12 51.52
OVER 14/12 TO 16/12 61.83
OVER 16/12 TO 18/12 72.13
OVER 18/12 TO 20/12 7.5 2.29
OVER 20/12 TO 21/12 82.44
Fig 15
CLEARANCES
ASDEFINED
BY APPLIANCE
MFG
45°
ELBOW
WALL STRAP
PLUMBER'STAPE
CONNECTEDTO
WALL STRAP
CLEARANCES
AS DEFINED
BY APPLIANCE
MFG
45°
ELBOW
OPTIONAL
HIGH-WIND
TERMINATION
CAP

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Fig 17
VERTICAL
TERMINATION
FLASHING
SECURE FLASHING WITH
NON-HARDENING
SEALANT AND ROOFING
NAILS
OPTIONAL
HIGH-WIND
TERMINATION
CAP
STORM
COLLAR
Notes:
(1) Ifanoffsetisnecessaryintheattictoavoidobstructions,itisimportant
tosupporttheventpipeevery3feet,toavoidexcessivestressontheElbows,and
possibleseparation.WallStrapsareavailableforthispurpose. (Fig15)
(2) Wheneverpossible,use45°Elbows,insteadof90°Elbows. The45°
Elbowofferslessrestrictiontotheflowoffluegasesandintakeair.
Step7. SliptheflashingoverthePipeSection(s)protrudingthroughthe
roof. Useanon-hardeningsealantbetweentheFlashingandtherooftoprevent
waterleakage. SecurethebaseoftheFlashingtotheroofwithroofingnails. Insure
theroofingmaterialoverlapsthetopedgeoftheFlashingasshowninFig17. Verify
thatyouhaveatleasttheminimumclearancetocombustiblesattheroofline.
Step8. ContinuetoaddPipeSectionsuntiltheheightoftheVentCap
meetstheminimumbuildingcoderequirementsdescribedinFig16. Notethatfor
steeproofpitches,theventheightmustbeincreased. Inhighwindconditions,
nearbytrees,adjoiningrooflines,steeppitchedroofs,andothersimilarfactorscan
resultinpoordraft,ordown-drafting. Inthesecases,increasingtheventheightmay

14
Fig 18
NAILS
CEILING
FIRESTOP
CLEARANCES
ASDEFINED
BY APPLIANCE
MFG
CLEARANCES
ASDEFINED
BY APPLIANCE
MFG
CLEARANCES
ASDEFINED
BY APPLIANCE
MFG
CLEARANCES
ASDEFINED
BY APPLIANCE
MFG
solvethisproblem.
Step 9. Slip the Storm
CollaroverthePipe,andpush
it down to the top of the
Flashing,asshowninFig17.
Usethenon-hardeningsealant
above and below the joint
betweentheStormCollarand
thePipe.
Step10. Twistlockthe
VentCap.
Notes:
(1) For multi-story
vertical installations,aCeiling
Firestop is required at any
subsequent floors. (Fig 18)
Theopeningshouldbecutand
framedinthesamemanneras
theopeninginStep3. (SeeFig
14)
(2) Anyoccupiedareas
abovethefirstfloor,including
closets and storage spaces,
whichtheverticalventpasses
through, must be enclosed.
The enclosure may be framed and sheetrocked with standard construction
materials,howeverconsult theappliancemanufacturer'sinstallationinstructions
fortheminimumallowableclearancebetweentheoutsideoftheventpipe,and
the combustible surfaces of the enclosure. Do not fill any of the required air
spaces with insulation.
GENERAL
MAINTENANCE
Conduct an inspection of the venting system semi-annually.
Recommended areas to inspect are as follows:

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1. CheckareasoftheVentingSystemwhichareexposedtotheelements
forcorrosion. Thesewillappearasrustspotsorstreaks,andinextremecases,
holes. These components should immediately be replaced.
2. RemovetheCap, andshineaflashlightdownthevent. Removeany
bird nests, or other foreign material.
3. Checkforevidencesofexcessivecondensate,suchaswaterdroplets
formingintheinnerliner,andsubsequentlydrippingoutatjoints. Continuous
condensatecancausecorrosionofcaps,pipe,andfittings. Itmaybecausedby
having excessive lateral runs, too many elbows, and exterior portions of the
system being exposed to cold weather.
4. Inspect joints, to verify that no Pipe Sections or Fittings have been
disturbed,andconsequentlyloosened. Alsocheckmechanicalsupportssuch
as Wall Straps, or plumbers' tape for rigidity.
LABELS
All componentsarelabelledwiththeappropriateidentification information,
and the listing data.

16
Other products made by Simpson Dura-Vent:
Dura/Plus Chimney
Dura-Vent Gas Vent (B-Vent)
Dura-Black Single Wall Stovepipe
Dura/Liner Masonry Reliner
DVL Close Clearance Connector Pipe
Dura/Connect Single-Wall Connector for B-Vent
DuraFlex Masonry Reliner for Gas Appliances
Designer Series Accessories
SIMPSON
DURA-VENT,INC
PO Box 1510
Vacaville,CA
95688-1510
Vicksburg,MS
(800)-835-4429
(707)-446-4740(FAX)
May1996
L951