Heatilator CL36D User manual

1Heatilator•CL36D,CR36DInstallationManual•4012-046•RevD•10/03/13
Installationandserviceofthisreplaceshouldbe
performedbyqualiedpersonnel.Hearth&Home
TechnologiesrecommendsNFIcertiedprofes-
sionals,ortechnicianssupervisedbyan
NFIcertiedprofessional.
WOODBURNING FIREPLACE
Fire Risk.
WARNING
Forusewithsolidwoodfuelonly.
Otherfuelsmayoverreandgenerate
poisonousgases(i.e.carbonmonoxide).
Model(s):
Installation Manual
Installation and Fireplace Setup
WARNING
HOT SURFACES!
Glassandothersurfacesarehotduring
operationANDcooldown.
Hot glass will cause burns.
• DO NOTtouchglassuntilitiscooled
• NEVERallowchildrentotouchglass
• Keepchildrenaway
• CAREFULLY SUPERVISE children in same room as
replace.
• Alertchildrenandadultstohazardsofhightemperatures.
Hightemperaturesmayigniteclothingorotherammable
materials.
• Keep clothing, furniture, draperies and other ammable
materialsaway.
INSTALLER: Leave this manual with party responsible for use and operation.
OWNER: Retain this manual for future reference.
CL36D
CR36D
NOTICE: DO NOT discard this manual!
• DO NOTstoreorusegasolineorotheram-
mablevaporsandliquidsinthevicinityofthis
oranyotherappliance.
• DO NOToverre.Overring will void your
warranty.
• Complywithallminimumclearancestocom-
bustiblesasspecied.Failuretocomplymay
causehousere.
WARNING: If the information in these
instructionsisnotfollowedexactly,are
or explosion may result causing property
damage, personal injury, or death.

2Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
Safety Alert Key:
• DANGER! Indicatesahazardoussituationwhich,ifnotavoidedwillresultindeathorseriousinjury.
• WARNING!Indicatesahazardoussituationwhich,ifnotavoidedcouldresultindeathorseriousinjury.
• CAUTION! Indicatesahazardoussituationwhich,ifnotavoided,couldresultinminorormoderateinjury.
• NOTICE:Indicatespracticeswhichmaycausedamagetothereplaceortoproperty.
Table of Contents
1 ProductSpecic&ImportantSafetyInformation
A.FireplaceCertication 4
B.Non-CombustibleMaterials 4
C.CombustibleMaterials 4
2 Getting Started
A.TypicalFireplaceSystem 5
B.DesignandInstallationConsiderations 6
1.SelectingFireplaceLocations 6
2.LocatingFireplace&Chimney 7
C.ToolsandSuppliesNeeded 8
D.InspectFireplaceandComponents 8
E.FireplaceSystemRequirements 8
3 Framing and Clearances
A.FireplaceDimensions 9
B.Clearances 10
MinimumClearancestoCombustibles 10
C.ConstructtheChase 11
D.FrametheFireplace 12
E.SecureandLeveltheFireplace 12
F. ProtectiveMetalHearthStrips 13
G.OutsideAirKit(optional) 14
4 Chimney and Termination Requirements
A.ChimneyRequirements 15
B.Offsets/Returns 16
C.TerminationRequirements 17
5 Chimney Installation
A.TypicalChimneySystem 18
B.AssembleChimneySections 19
C.InstallChimneyAirKit 19
D.SecureOffset/Return 20
E.InstallCeilingFirestops 20
F. InstallAtticInsulationShield 21
G.RoofPenetration 22
H.InstallChase/ChaseTop 22
I. TerminationCapRequirements 23
J. InstallTerminationCap 23
6 Shrouds
A.RadiationShield 25
B.FieldConstructedShrouds 25
1.OpenTopShroud 25
2.MailboxStyleShroud 26
3.RoofedStyleShroud 26
7 Finishing
A.FinishingMaterial 27
B.HearthExtension,BuildingandFinishing 28
1.FireplaceInstalledFlushontheFloor
 andHearthExtensionRaisedtoBottom
 ofFireboxOpening 29
2.RaisedHearthExtensionandRaisedFireplace 30
3.FireplaceOpeningandHearthExtensionFlush
 withtheFloor 31
C.Non-CombustibleSealantMaterial 31
D.MantelandWallProjections 32
E.Sidewalls/Surrounds 33
8 Fireplace Setup
A.GasLog/LighterProvision 34
B.WoodBurningInserts 34
9 Reference Materials
A.ChimneyComponents 35
B.OptionalComponents 39
►
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Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
Customer:
Lot/Address
Model (circle one): CL36D CR36D
YES IF NO, WHY?
Shrouds Section 6 (Pg. 25)
Shroudisinstalledproperlyperinstructions.
Fi i hi
S ti 7 (P 27)
Protectivehearthstripsinstalledpermanualrequirements.(Pg.13)
Fireplace Install
Outsideairkitinstalled.(Pg14)
ChimneySection4&5(Pg.15)
Atticinsulationshieldinstalled.
ATTENTION INSTALLER:
Follow this Standard Work Checklist
Thisstandardworkchecklististobeusedbytheinstallerinconjuctionwith,notinsteadof,theinstructionscontainedinthisinstallation
manual.
Date Installed:
Location of Fireplace:
Installer:
Dealer/Distributor Phone #
Serial #:
Roofflashinginstalled.
Terminationinstalled.
WARNING! Risk of Fire or Explosion! Failure to install fireplace acording to these instructions can lead to a fire or
explosion.
Verifiedthatthechaseisinsulatedandsealed.(Pg.11)
Verifiedclearancestocombustibles.(Pg.10)
Fireplaceisleveledandsecured.(Pg.12)
Hearthextensionsize/heightdecided.(Pg.28)
Chimneyconfigurationcomplieswithdiagrams.
Chimneyinstalled,lockedandsecuredinplacewithproperclearance.
Chimneyairkitinstalled.
Firestopsinstalled.
Hearth&HomeTechnologiesrecommendsthefollowing:
Commentscommunicatedtopartyresponsible
4012-047•RevA•06/10/13
Finishing Section 7 (Pg. 27)
Hearthextensioninstalledpermanualrequirements.
Fireplace Setup Section 8 (Pg. 34)
Verifiedallclearancesmeetinstallationmanualrequirements.
Mantelsandwallprojectionscomplywithinstallationmanualrequirements.
•Photographingtheinstallationandcopyingthischecklistforyourfile.
Combustiblematerialsnotinstalledinnon-combustibleareas.
__________________________by______________________on_________
(Builder/Gen.Contractor)(Installer)(Date)
Comments:Furtherdescriptionoftheissues,whoisresponsible(Installer/Builder/OtherTrades,etc.)andcorrectiveactionneeded:
Manualbagandallofitscontentsareremovedfromthefireplaceandgiventotheparty
responsibleforuseandoperation.
•Thatthischecklistremainvisibleatalltimesonthefireplaceuntiltheinstallationiscomplete.
Allpackagingandprotectivematerialsremoved.
Optionaldoorsproperlyinstalled.
Refractoryinstalledcorrectly.
Grateisproperlyinstalled.
Firescreenproperlyinstalled.

4Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
WARNING! Risk of Fire! Hearth & Home Technologies
disclaims any responsibility for, and the warranty and
agency listing will be voided by the following actions.
DO NOT:
• installoroperatedamagedreplace
• modifyreplace
• install other than as instructed by Hearth & Home
Technologies
• operate the fireplace without fully assembling all
components
• overre
• installunventedgaslogset
• installanycomponentnotapprovedbyHearth&Home
Technologies
• installpartsorcomponentsnotListedorapproved
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. For
assistance or additional information, consult a qualied
installer, service agency or your dealer.
B. Non-Combustible Materials
• Materialswhich willnot igniteand burn,composed of
anycombinationofthefollowing:
- Steel - Iron
- Brick - Tile
- Concrete - Slate
- Glass - Plasters
• MaterialsreportedaspassingASTM E 136, Standard
Test Method for Behavior of Metals, in a Vertical Tube
Furnace at 750° C
C. Combustible Materials
• Materialsmadeoforsurfacedwithanyofthefollowing
materials:
- Wood - Compressedpaper
- Plantbers - Plastic
- Plywood/OSB - Sheetrock(drywall)
• Anymaterialthatcanigniteandburn;ameproofedor
not,plasteredorun-plastered
1 ProductSpecic&ImportantSafetyInformation
A.FireplaceCertication
ThisreplacemaybeinstalledinsleepingroomsEX-
CEPTinmanufacturedhomes.Ifinstalledwithagaslog
set,provisionsfortheNationalFuelGasCodemustbe
met.
Thisreplacehasbeentestedandlistedforusewith
theoptionalcomponentsspeciedinthismanual.These
optionalcomponentsmaybepurchasedseparatelyand
installedatalaterdate.Anoutsideairkit,gasinsert,gas
logsetorgaslog-lightershouldbeinstalledatthetimeof
replaceinstallation.
HeatilatorisaregisteredtrademarkofHearth&Home
Technologies.
Thisreplacesystemhasbeentestedandlistedinaccor-
dancewithUL127andULC-S610standardsbyUnder-
writersLaboratoriesInc.forinstallationandoperationin
theUnitedStatesandCanada.

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Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
2 Getting Started
A. Typical Fireplace System
Figure 2.1 Typical Fireplace System
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Non-combustible
roof flashing maintains
minimum clearance
around chimney
Additional lateral
support for chimney
above roof (or enclosed
in chase) if needed
Ceiling firestop
on floor of attic
Support straps
on rafter support
chimney (not shown)
Termination cap
Chimney penetrates roof
preferably without affecting
roof rafters
Offset & Return (with hanger straps)
Framing headed off
in ceiling joists
Enclosed space above
and around fireplace
Mantel and surround
Decorative facing
and trim
Hearth extension
Factory-built fireplace
Protective metal
hearth strip(s)
Outside
combustion air
Combustible framing/header
on top of V-shaped standoffs
Chimney system
Attic insulation shield (not shown)
must be used here to keep
insulation away from chimney
if attic is insulated
Storm Collar
Chimney Air Kit
(Section 8)
Required in
Canada. Outlet
must be no
less than 4 ft.
(1.22 m) off
ground level.

6Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
42-1/2 in.
(1080 mm)
22 1/2 in.
(572 mm) *
1/2 in. (13 mm)
Clearance
1/2 in. (13 mm)
Clearance
REQUIRED!
2 in. (51 mm) minimum air space
clearance around chimney
18 in. (457 mm)
minimum distance
from wall to
fireplace opening.
54 5/8 in. (1387 mm) *
22 1/2 in.
(572 mm) *
1/2 in.
Drywall
* If the interior of the chase will
be drywalled, add the thick-
ness to this measurement.
Figure 2.2 Fireplace Locations
NOTICE:
• Illustrationsandphotosreecttypicalinstallationsand
are FORDESIGNPURPOSESONLY.
• Illustrations/diagramsarenotdrawntoscale.
• Actualinstallation/appearancemayvaryduetoindividual
design preference.
• Hearth&HomeTechnologiesreservestherighttoalter
its products.
NOTICE: In addition to these framing dimensions, also
reference the following section:
• Clearances (Section 3).
NOTICE:
Aminimum1/2in.airclearanceatthebackand
sidesofthereplaceassemblymustbemain-
tained.
Chimneysectionsatanylevelrequirea2in.mini-
mum air space clearance between the framing
and chimney sections.
B. Design and Installation Considerations
NOTICE: Checkbuildingcodespriortoinstallation.
• InstallationMUSTcomplywithlocal,regional,stateand
nationalcodesandregulations.
• Consultinsurancecarrier,localbuildinginspector,re
ofcialsorauthoritieshavingjurisdictionoverrestrictions,
installationinspectionandpermits.
• Before installing,determinethefollowing:
- Wherethereplaceistobeinstalled.
- Theventsystemcongurationtobeused.
- Gassupplypiping.
- Electricalwiring.
- Framingandnishingdetails.
- Whetheroptionalaccessories-devicessuchasa
fan,wallswitchorremotecontrol-aredesired.
1. Selecting Fireplace Locations
Thisreplacemaybeusedasaroomdivider,installed
alongawall,acrossacornerorusedinanexteriorchase.
SeeFigure2.2.
Locatingthereplaceinabasementshouldbeavoided.
Locatingnearfrequentlyopeneddoors,centralheat
outletsorreturns,orotherlocationsofconsiderableair
movementcanaffecttheperformance.
Considerationshouldbegiventothesefactorsbefore
decidingonalocation.

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Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
2. LocatingFireplace&Chimney
Locationofthereplaceandchimneywillaffectperfor-
mance.
• Installwithinthewarmairspaceenclosedbythebuilding
envelope.Thishelpstoproducemoredraft,especially
duringlightinganddie-downofthere.
• Installingthereplaceinabasementisnotrecommended.
• Penetratethehighestpart oftheroof.Thisminimizes
theeffectsofwindloading.
• Locate termination cap away from trees, adjacent
structures,unevenrooflinesandotherobstructions.
• Minimizetheuseofchimneyoffsets.
• Considerthereplacelocationrelativetooorandceiling
andatticjoists.
• Takeintoconsiderationtheterminationrequirementsin
Sections4and5.
Marginal Location:
• Below peak
Location NOT recommended:
• Not the highest point of the roof
• Wind loading possible
Multi-level Roofs
Windward
Leeward
Recommended Location:
• Above peak
Recommended:
• Insulated exterior chase
in cooler climates
Recommended Location:
• Above peak
• Inside heated space
Location NOT recommended:
• Too close to tree
• Below adjacent structure
• Lower roof line
• Avoid outside wall
Marginal Location:
• Wind loading possible
Figure 2.3 Recommended Chimney Locations
• Installtheoutsideairkitwiththeintakefacingprevailing
windsduringtheheatingseason.
• Ensure adequate outdoor air for all combustion
appliancesandexhaustequipment.
• Ensurefurnaceandairconditioningreturnventsarenot
locatedintheimmediatevicinityofthereplace.
• Avoidinstallingthereplaceneardoors,walkwaysor
smallisolatedspaces.
• Recessedlightingshouldbea“sealedcan”design.
• Attichatchesweatherstrippedorsealed.
• Atticmountedductworkandairhandlerjointsandseams
tapedorsealed.

8Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
C. Tools and Supplies Needed
Beforebeginningtheinstallationbesurethefollowing
toolsandbuildingsuppliesareavailable:
Reciprocatingsaw Framingmaterial
Pliers Non-combustiblesealant
Hammer Gloves
Phillipsscrewdriver Framingsquare
Flatbladescrewdriver Electricdrillandbits
Plumbline Safetyglasses
Level Tapemeasure
1/2-3/4in.length,#6or#8self-drillingscrews
Misc.screwsandnails
D. Inspect Fireplace and Components
WARNING! Risk of Fire and/or Explosion! Damaged
parts could impair safe operation. DO NOT install dam-
aged,incompleteorsubstitutecomponents.Keepre-
place dry.
• Removereplaceandcomponentsfrompackagingand
inspectfordamage.
• Vent system components and doors are shipped in
separatepackages.
• Reporttoyourdealeranypartsdamagedinshipment.
• Read all the instructions before starting the
installation. Follow these instructions carefully
during the installation to ensure maximum safety
andbenet.
E. Fireplace System Requirements
TheHeatilatorreplacesystemrequirementsconsistof
thefollowing:
• Fireplace
- Refractory(includedwithreplace)
- Firescreen(includedwithreplace)
- Grate(includedwithreplace)
- HearthExtension(required,soldseparately)
• OutsideAirSystem(optional)
- AirInletHood
- Flex
• ChimneySystem
- AtticInsulationShield(includedwithreplace)
- Chimneyairkit(requiredinCanada,soldseparately)
- Chimneyterminationcap(required,soldseparately)
• Non-combustiblenishmaterial

9
Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
3 Framing and Clearances
A. Fireplace Dimensions
8-1/2 in.
1-1/2 in. SQ.
GAS
OPENING
1-1/2 in. DIA.
ELECTRICAL
KNOCKOUT
1/2 in.
5-1/4 in.
8 in.
13-3/4 in.
34 in. opening
4-3/4 in. x 6-5/8 in. O.A.
KNOCKOUT
3-1/2 in.
6-3/4 in.
38-1/2 in.
effective
height
9 in.
22-1/2 in.
5-7/8 in.
42-1/4 in.
17-1/4 in.
22-1/2 in.
36-5/8 in.
Figure 3.1 Fireplace Dimensions

10 Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
B. Clearances
WARNING! Risk of Fire!
You must comply with all minimum air space clearances
tocombustiblesasspeciedinFigure3.2.DO NOTpack
required air spaces with insulation or other materials.
Framing or nishing material used on the front of, or in
frontof,thereplacecloserthantheminimumslistedmust
be constructed entirely of non-combustible materials (i.e.,
steel studs, concrete board, etc.). Failure to comply may
causere.
Figure 3.2 Clearances to Combustible Materials
Minimum Clearances to Combustibles
WITHIN ENCLOSURE AREA
Fireplacetobackwall 1/2in.(13mm)
Fireplacetosidewall 1/2in.(13mm)
Topstandoffstoheader 0in.(0mm)
Dooropeningtosidewall 18in.(457mm)
MANTEL
Mantelminimumheight 41in.(1041mm)
Maximummanteldepth 12in.(305mm)
(insulation)
0 in. to level
of standoffs
Attic
Insulation
Shield
(ceiling)
(roof)
(attic)
(ceiling)
Ceiling Firestop
Offset/Return (secured
with hanger straps)
Storm Collar
Roof Flashing
1/2 in. (13 mm) to back &
side of appliance
Must have 2 in. (51 mm)
minimum clearance
to header
0 in.
to floor
2 in. (51 mm) min.
Shaded areas
represent
2 in. (51 mm) min.
air space clearance
required around pipe
Chimney air kit
attached here (not shown)
Note: Chimney air kit is not
shown,butisrequiredinCanada.

11
Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
C. Construct the Chase
Achaseisaverticalboxlikestructurebuilttoenclosethe
replaceand/oritsventsystem.Verticalchimneysthat
runontheoutsideofabuildingmustbeinstalledinsidea
chase.
Incoldclimates,Hearth&HomeTechnologiesrecom-
mendsthatthechasebewellinsulatedusingbatttype
insulationbetweenthejoists.
Constructionofthechasemayvarywiththetypeofbuild-
ing.Theseinstructionsarenotsubstitutesfortherequire-
mentsoflocalbuildingcodes.LocalbuildingcodesMUST
bechecked.
Chasesshouldbeconstructedinthemannerofalloutside
wallsofthehometopreventcoldairdraftingproblems.
Thechaseshouldnotbreaktheoutsidebuildingenvelope
inanymanner.Allouterwallsneedtobeinsulated.
Buildingcodesrequirefalseceilingandceilingrestops/
atticshieldsateachoorofthechaseorevery10ft(3048
mm)ofclearspacetocontrolspreadofre.
Walls,ceiling,baseplateandcantileveroorattherst
levelofthechaseshouldbeinsulated(seeFigure3.3.)
Vaporandairinltrationbarriersshouldbeinstalledinthe
chaseasperregionalcodesfortherestofthehome.Ad-
ditionally,Hearth&HomeTechnologiesrecommendsthat
theinsidesurfacesbedrywalledandtaped(ortheuseof
anequivalentmethod)formaximumairtightness.
Holesandotheropeningsshouldbecaulkedwithhigh
temperaturecaulkorstuffedwithunfacedberglassinsu-
lation.
Ceiling
Firestop
Metal Chase Top
Round Termination Cap
False Ceiling
Insulation in the
outside walls
of the chase
Attic
Insulation
Shield
Chimney
Ceiling
Firestop
Tabs
False Ceiling
False Ceiling
Insulation
Insulation
Figure 3.3 Chase Assembly
1 2 3
All outside walls should be insulated.
Figure 3.4 Chase Constructions
1. Fireplaceandchimneyenclosedinanexteriorchase.
 2. Chimneyoffsetthroughexteriorwallandenclosedinchase.
 3. Chaseconstructedonroof.
• Thechaseisconstructedusingframingmaterialsmuch
thesameasthewallsinyourhome.Avarietyofsiding
materials may be used including brick, stone, veneer
brick,orstandardsidingmaterials.
• In constructing the chase, several factors must be
considered:
- Maintain a 2 in. (51 mm) air space around the
chimney.
- The chase top must be constructed of non-
combustiblematerial.
- Incoldclimates,arestopspacerandatticinsulation
shieldshouldbeinstalledinaninsulatedfalseceiling
at the 8 ft. (2438 mm) level above the replace
assembly.Thisreducesheatlossthroughthechase.
- Incold climates, the walls of the chase should be
insulatedtothelevelofthefalseceilingasshownin
Figure3.3.Thiswillhelpreduceheatlossfromthe
homearoundthereplace.
ThreeexamplesofchaseapplicationsareshowninFig-
ure3.4.
WARNING! You must install false ceilings and ceil-
ing restops at each oor of the chase or every 10 ft
(3.05 m) to control spread of re.
WARNING! Risk of Fire! DO NOT sealareabetweenre
stop opening and chimney pipe except where they enter
the attic or leave the warm air envelope of the home (use
600° F sealant).
WARNING! Risk of Fire! You mustmaintainaminimum
2in.(51mm)airspaceclearancetoinsulationandother
materials surrounding the chimney system.
• Insulationandothermaterialsmustbermlysecuredto
prevent accidental contact with chimney system.
• Thechasemustbeproperlyblockedtopreventblown
insulation or other combustibles from entering and
makingcontactwithreplaceorchimney.
• Failuretopreventcontact betweeninsulationorother
materials and chimney system may cause overheating
andre.

12 Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
D. Frame the Fireplace
NOTICE: Hearth extension design must be determined
beforeinstallationofreplace.
Ifthereplaceisplacedontheoorthemaximumheight
ofanishedraisedhearthis5-7/8”,ifyouwantahigher
raisedhearththereplacemustbeplacedonaplatform.
WARNING! Risk of Fire! Youmustcomplywithall
minimum air space clearances to combustibles. DO NOT
packrequiredairspaceswithinsulationorothermateri-
als.
WARNING! Risk of Fire! Comply with all minimum clear-
ancesspecied.
• A minimum 1/2 in. (13 mm) air clearance must be
maintainedatthebacksidesofthereplaceassembly.
• Chimneysectionsatanylevelrequirea2in.(51mm)
minimum air space clearance between the framing and
chimney section.
Figure3.5showsatypicalframing(using2x4lumber)
ofthereplace,assumingcombustiblematerialsare
used.Allrequiredclearancestocombustiblesaroundthe
replacemustbeadheredto.SeeFigure3.2.Anyframing
acrossthetopofthereplacemustbeabovethelevelof
thetopstandoffs.(Norecessabovestandoffs.)
The nishedcavitydepthmustbenolessthan221/2in.
(572mm)fromthenishedbackwalltotheoutsideoffront
wallframing.Framingmustextendstraightupalltheway
totheceiling.
CAUTION! RiskofCuts/Abrasions.Wearprotectivegloves
and safety glasses during installation. Sheet metal edges
are sharp.
WARNING! Risk of Fire! Prevent contact with sagging,
loose insulation.
• DO NOT install against vapor barriers or exposed
insulation.
• Secureinsulationandvaporbarriers.
• Provideminimumairspaceclearancesatthesidesand
backofthereplaceassembly.
E. Secure and Level the Fireplace
Thisreplacemaybeplacedoneitheracombustible
ornoncombustiblecontinuousatsurface.Followthe
instructionsforframinginSection3.Slidethereplace
intoposition.Besuretoprovidetheminimum1/2in.air
clearanceatthesidesandbackofthereplace.
Thereplaceshouldbepositionedsothefaceofthenon-
combustiblematerialonthereplacewillbeushwiththe
faceofthedrywallonthewalls.
Levelthereplaceandshimasnecessary.
42-1/2 in.
(1080 mm)
22 1/2 in.
(572 mm) *
1/2 in. (13 mm)
Clearance
1/2 in. (13 mm)
Clearance
REQUIRED!
2 in. (51 mm) minimum air space
clearance around chimney
18 in. (457 mm)
minimum distance
from wall to
fireplace opening.
54 5/8 in. (1387 mm) *
22 1/2 in.
(572 mm) *
1/2 in.
Drywall
* If the interior of the chase will
be drywalled, add the thick-
ness to this measurement.
Figure 3.5 Framing the Fireplace

13
Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
1" OVERLAP
Metal strip 2 in. (51 mm) under edge
of fireplace openings and hearth
extension.
Raised Platform
Floor
2 in.
(51 mm)
1 in. (25 mm) min.
overlap
2 in.
(51 mm)
Top piece must overlap
bottom piece
Figure 3.7 Protect the Front of an Elevated Platform
F. Protective Metal Hearth Strips
Figure 3.6 Position the Protective Metal Hearth Strips
• Locatethetwoprotectivemetalhearthstripsmeasuring
approximately26in.x4in.(660mmx102mm)included
withthisreplace.
• Slideeachmetalstrip2in.(51mm)underfrontedgeof
replace.
• Overlapstripsinthemiddleofreplaceopeningby1in.
(25mm)minimum.
• Metal strips must extend beyond the front and sides
of the replace opening by at least 2 in. (51 mm),
Figure3.6).
• Protectthefrontofaplatformelevatedabovethehearth
extensionwithmetalstrips(notincludedwithreplace)
per Figure 3.6. See Section 7 for hearth extension
instructions.
WARNING! Risk of Fire! Protective metal hearth
strips MUST be installed on combustible surfaces. DO
NOT cover metal strips with combustible materials.
Sparksorembersmayigniteooring.
WARNING! Risk of re! Hightemperatures,sparks,
embers or other burning material falling from the
replacemayigniteooringorconcealedcombustible
surfaces.
• ProtectivemetalhearthstripsMUSTbeinstalled.
• Hearth extensions MUST be installed exactly as
specied.

14 Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
G. Outside Air Kit (optional)
Ifyouinstallanoutsideairkit,Hearth&HomeTechnolo-
giesrecommendsyouutilizetheshortestductruntoop-
timizetheperformanceoftheoutsideairkit.Theoutside
airinlethoodshouldbepositionedinamannerthatwill
notallowsnow,leaves,etc.toblocktheinlet.Insome
installationstheairductmayneedtoberunvertically.
Insuchaninstallation,a3ft(914mm)heightdifference
mustbemaintainedfromthetopoftheuppermostchim-
neysectiontotheoutsideairinlethood.
RefertoFigures3.8and3.9whenplacingtheoutsideair
inlethood.
Theoutsideairkitisinstalledonthesideofthereplace.
• Cuta4in.(102mm)holeinoutsidewalltoaccommodate
airpiping.
• Use4in.(102mm)ex(notsupplied)todirectlyconnect
outsideairtoreplaceintake.Insulatethepipetoprevent
frostcondensation.
• Usethesuppliedoutsideairinlethood.
• Seal between the wall and the pipe with silicone to
preventmoisturepenetrationandairleaks.
• Sealbetweentheoutsideairinlethoodandthehouse
withsiliconetopreventairinltration.
CAUTION! Risk of Cuts/Abrasions. Wearprotective
gloves and safety glasses during installation. Sheet metal
edges are sharp.
CAUTION! Risk of Fire or Asphyxiation! DO NOT draw
outsidecombustionairfromwall,oororceilingcavity,or
enclosed spaces such as an attic or garage.
• DO NOT place outside air inlet hood close to exhaust
vents or chimneys. Fumes or odor could be drawn into
theroomthroughthereplace.
• Locateoutsideairinlethoodtopreventblockagefrom
leaves,snow/ice,orotherdebris.Blockagescouldcause
combustion air starvation.
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Place unit, then outline and fill
with white. Move behind the unit
and group/ Delete this note.
3 ft min. from
top of uppermost
chimney section
to air inlet.
Figure 3.8 Outside Air Inlet Locations
Outlet placed
higher than 3 ft
below the
termination cap
Attic space
Garage or
combustible
liquids storage
Outlet blocked by
snow, leaves, etc.
Clear area
outside
house or in
ventilated
crawl space
YES
NO
NO
NO
NO
Factory-built
fireplace
• Use UL181 Class 0 or Class 1 rigid or flexible ducting.
• Install with short run or mainly straight duct, except small
dip for cold air trap which will help prevent flow of cold air.
• Secure flex duct with metal tape, screws or wire ties.
Figure 3.9 Outside Air Installation
Note: Chimney air kit is
notshown,butisrequired
inCanada.
►

15
Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
20 ft (6.10 m) max.
pipe between an
offset & return
Ceiling firestop
35 ft (10.7 m)
max. straight
unsupported
chimney height
14 ft (4.27 m) min. height
(no offset-return)
50 ft (15.24 m) max. height
6 ft (1.83 m) max.
unsupported chimney
above roof
38 1/2 in. (978 mm)
Effective Height
Figure 4.1 Chimney Requirements
NOTICE: Amaximumoftwopairsofoffsetsandreturns
may be used.
Minimum overall straight height 14ft 4.27m
Minimumheightwithsingleoffset/
return
14.5ft 4.42m
Doubleoffset/returnminimumheight 20ft 6.1m
Maximum height 50ft 15.24m
Maximum chimney length between an
offset and return
20ft 6.1m
Maximum distance between chimney
stabilizers
35ft 10.67m
Maximum unsupported chimney
length between the offset and return
6 ft 1.83m
Maximum unsupported chimney
heightabovethereplace
35ft 10.67m
Maximum unsupported chimney
above roof
6 ft 1.83m
WARNING! Risk of Fire! Youmustmaintain2in.(51mm)
air space clearance to insulation and other combustible
materials around the chimney system. Failure to do so
maycauseoverheatingandre.
NOTICE: You must provide support for the pipe during
constructionandchecktobesureinadvertentloadinghas
notdislodgedthechimneysectionfromthereplaceorat
any chimney joint.
A. Chimney Requirements
Verticaldistancesaremeasuredfromthebaseofthe
replaceasshowninFigure4.1.
4 Chimney and Termination Requirements
Table 4.2 Chimney Component Dimensions
Table 4.1 Chimney Requirements
HEIGHT OF CHIMNEY COMPONENTS in. mm
Chimney Stabilizer
SL3 4-3/4 121
Offsets/Returns
SL315 13-3/8 340
SL330 15-1/2 394
Chimney Sections*
SL306 4-3/4 121
SL312 10-3/4 273
SL318 16-3/4 425
SL324 22-3/4 578
SL336 34-3/4 883
SL348 46-3/4 1187
*Dimensionsreecteffectiveheight.

16 Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
B. Offsets/Returns
• Useanoffset/returntobypassoverheadobstructions.
• Anoffsetandreturncanbeusedasasingleentityorseparatedbychimneysection(s).
WARNING! Risk of Fire! DO NOT useoffset/returnsgreaterthan30°.Chimneydraftwillberestrictedandcouldcause
overheatingandre.Secureoffsetswithscrews(nottoexceed1/2”/13mminlength)Securereturnswithstrapping.
Straight chimney sections may be secured with screws. Keep chimney sections from separating or twisting.
• Measuretheshiftneededtoavoidtheoverheadobstruction.RefertodimensionAinFigure4.2.
• FindtheappropriateAdimensionlistedinTable4.3.TheBdimensioncoincidingwiththeAdimensionmeasurementin
Table4.3representstherequiredverticalclearanceneededtocompletetheoffset/return.
• Readacrossthecharttondthenumberofchimneysections/modelnumbersneededbetweentheoffsetandreturn.
A
B
1-1/4 in. (32 mm)
OVERLAP
Figure 4.2 Chimney Offset/Return
Table 4.3 Offset Dimensions
Example:
Your“A”dimensionfromFigure4.2is14-1/2in.(368
mm).UsingTable4.3thedimensionclosestto,butnot
lessthan14-1/2in.(368mm)is14-1/2in.(368mm)us-
inga30°offset/return.
Youdeterminefromthetablethatyouneed34-1/8in.
(867mm)(Dimension“B”)betweentheoffsetandre-
turn.
Thechimneycomponentthatbesttsyourapplicationis
oneSL324.
15-degree 30-degree
SL306 SL312 SL318 SL324 SL336 SL348
A B A B
in. mm in. mm in. mm in. mm
15/8 41 133/8 340 35/8 92 151/2 394 - - - - - -
27/8 73 173/4 451 51/2 140 185/8 473 1-----
41/8 102 223/8 568 71/4 184 213/4 552 2 - - - - -
41/2 114 235/8 600 81/2 216 233/4 603 - 1- - - -
53/4 146 281/4 718 101/4 260 27 686 1 1 - - - -
6 152 293/8 746 111/2 292 29 737 - - 1- - -
71/4 184 34 864 131/4 337 321/8 816 - 2 - - - -
73/4 197 361/8 918 141/2 368 341/8 867 - - - 1- -
83/4 222 393/4 1010 161/4 413 373/8 949 1- - 1- -
103/8 264 455/8 1159 191/4 489 421/2 1080 - - 2 - - -
105/8 270 463/4 1187 201/2 521 445/8 1133 - - - - 1-
117/8 302 513/8 1305 221/4 565 473/4 1213 1---1-
131/2 243 571/4 1454 251/4 641 527/8 1343 - - - 2 - -
133/4 349 583/8 1483 261/2 673 55 1397 - - - - - 1
15 381 63 1600 281/4 718 581/8 1476 1----1
161/2 419 683/4 1746 311/4 794 631/4 1607 - 1---1
18 457 745/8 1895 341/4 870 681/2 1740 - - 1- - 1
195/8 498 803/8 2042 371/4 946 733/4 1873 - - - 1-1
205/8 524 841/8 2137 391/8 994 767/8 1953 1- - 1-1
223/4 578 917/8 2334 431/4 1099 841/8 2137 - - - - 1 1
24 610 961/2 2451 451/8 1146 871/4 2216 1---1 1
257/8 657 1031/2 2629 491/4 1251 941/2 2400 - - - - - 2
Properassemblyofair-cooledchimneypartsresultinanoverlapatchimneyjointsof1-1/4in.(32mm).Effective
lengthisbuiltintothischart.

17
Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
Slanted Roofs
Flat Roofs
Chimney must
extend 3 ft (.9 m)
above the roof
Chimney must extend 2 ft (.6 m)
above any portion of the roof or
adjacent structures within
10 ft (3 m) of the chimney
Chimney must
extend 3 ft (.9 m)
above the roof
Chimney must extend 2 ft (.6 m)
above any portion of the roof or
adjacent structures within
10 ft (3 m) of the chimney
Multiple Chimney Locations
A B
6 in. (minimum) up to 20 in.
152 mm/508 mm
18 in. minimum
457 mm
20 in. and over 0 in. minimum
Gas, Wood or Fuel Oil
Termination Cap
Wood
Minimum
(See
illustration
above)
B
Gas
Termination
Cap **
A *
Perpendicular Wall
*
If using decorative cap cover(s), this distance may need to be
increased. Refer to the installation instructions supplied with the
decorative cap cover.
**
In a staggered installation with both gas and wood terminations, the
wood termination cap must be higher than the gas termination cap.
Figure 4.3 Multiple Chimney Locations
C. Termination Requirements
• Installacapapprovedandlistedforthisreplacesystem.
• Locatecapwhereitwillnotbecomepluggedbysnoworothermaterials.
• Locatecapawayfromtreesorotherstructures.
• Thebottomoftheterminationcapmustbeatleast3ft(.91m)abovetheroofANDatleast2ft(.61m)aboveanyportion
ofroofwithin10ft(3.05m).
• Thedistancerequiredbetweencapsisshownbelow.

18 Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
5 Chimney Installation
Chimney must extend
beyond combustible
roof structure
Maintain minimum
height of chimney
above roof
Additional
support for
tall chimneys
Install roof flashing
according to minimum
requirements
Maintain minimum
clearances to
combustibles as
specified
Offsets/returns
may not exceed
30° from vertical
Lock chimney
sections together
firmly to resist
movement
Ceiling firestops
are required where
chimney passes
through ceiling or
floor
Support straps for offsets
(not shown) must be
secured to adequate framing
Termination Cap
Storm Collar
Offsets/returns must be
secured with the screws
provided (outer pipe only)
Attic shield
Figure 5.1 Typical Chimney System - Guidelines for Chimney System Installation
NOTICE: Chimney performance may vary.
• Trees,buildings,rooflinesandwindconditionsaffectperformance.
• Chimneyheightmayneedadjustmentifsmokingoroverdraftoccurs.
A. Typical Chimney System

19
Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
C. Install Chimney Air Kit
• RequiredinCanada.
• Followinstructionsincludedwithaccessory.
NOTICE: Chimney sections cannot be disassembled once
lockedtogether.Planahead!
• Lockchimneysectionsand/oroffsets/returnstogetherby
pushingdownwarduntilthetopsectionmeetsthestop
beadonthelowersection.
• Pullonthetopsectiontomakesureitisfullyengaged
andwillnotseparate.
• Youmayuse#6or#8sheetmetalscrewsnolongerthan
1/2in.(13mm)tofastenchimneysectionstogether.Do
NOTpenetrateinnerue.
WARNING! Risk of Fire! YouMUSTusescrews(pro-
vided)tofastenoffset/returnstochimneysectionsto
keepthechimneypartsfromtwisting.Failuretodoso
couldcausere.
• Fasten offset/returns to chimney sections. Insert the
screws(provided)throughthepredrilledholes.DoNOT
penetrateinnerue.
• Secure chimney returns with hanger straps provided;
fastentostudsorjoists.
• Verticalstraightrunsofchimneymustbesupportedevery
35ft(10.7m).
B. Assemble Chimney Sections
Useonlythosecomponentsdescribedinthismanual.
Substituteordamagedchimneycomponentscouldimpair
safeoperationandcauseoverheatingandre.
Attacheitherastraightchimneysectionoranoffsetto
thetopofthereplace(dependingonyourinstallation
requirement).Chimneysectionsarelockedtogetherby
pushingdownwarduntilthetopsectionmeetsthestop
beadonthelowersection.
Theinnerueisplacedtotheinsideoftheuesection
belowit.Theoutercasingisplacedoutsidetheoutercas-
ingofthechimneysectionbelowit.SeeFigure5.2.
WARNING! Risk of Fire! DO NOT install substitute or
damaged chimney components.
Figure 5.2 Assembling Chimney Sections

20 Heatilator • CL36D, CR36D Installation Manual • 4012-046 • Rev D • 10/03/13
D. Secure Offset/Return
E. Install Ceiling Firestops
CAUTION! Risk of Fire! Ceilingrestopsmustbeused
wheneverthechimneypenetratesaceiling/oor.
• Chaseconstructionrequiresceilingrestopsateach
oororevery10ft.(3.05m)ofclearspace.
• Theceilingrestopslowsspreadofreandreduces
coldairinltration.
• Installaceilingrestopwheneverchimneypenetrates
ceiling/oor.
• MarkandcutanopeninginceilingasshowninFigure5.4.
• Frametheopeningwiththesamesizelumberusedin
theceilingjoists.
• Nailtheceilingrestoptothebottomoftheceilingjoists
whenthereisaroomabove.
• Useanatticinsulationshieldiftheceilingisinsulated.
Theceilingrestopmaythenbeattachedaboveorbelow
thejoists.
ROOM ABOVE (non-insulated ceiling)
ATTIC ABOVE (insulated ceiling)
B
A
Ceilng firestop
attached to bottom
of framing
Ceiling firestop
attached to top of
framing
Note: Use same dimensional lumber for framing
ceiling firestop and joists.
2 in. (51mm)
clearance
2 in. (51mm)
clearance
WARNING! Risk of Fire! DO NOT seal area between
restopopeningandchimneypipeexceptwheretheyen-
ter the attic or leave the warm air envelope of the home
(use 600° F sealant).
Figure 5.4 Installing the Ceiling Firestop
Whenoffsetsandreturnsarejoinedtostraightpipesec-
tions,theymustbelockedintopositionwiththescrews
provided*(outeronly),usingthepredrilledholes.Topre-
ventgravityfrompullingthechimneysectionsapart,the
returnsandthechimneystabilizershavehangerstrapsfor
securingthesepartstojoistsorrafters.SeeFigure5.3.
* Use#6or#8sheetmetalscrew,orlarger,nolonger
than1/2in.(13mm).
WARNING! Risk of Fire!
• Secureoffsetswithscrews(nottoexceed1/2in./13mm
In length).
• Securereturnswithstrapping.
• Straightchimneysectionsmaybesecuredwithscrew
(nottoexceed1/2in./13mmInlength)atthejoints.
• Keepchimneysectionsfromseparatingortwisting.
Ceiling
Firestop
Straps
Optional
Additional
Support
Joint
Band
(Optional)
Figure 5.3 Secure the Chimney
Catalog #
A B
in. mm in. mm
FS338 14-1/2 368 14-1/2 368
FS339 14-1/2 368 18-3/8 467
FS340 14-1/2 368 23 584