Heatilator BIR36-B User manual

Heatilator•Birmingham36-BInstallationManual•4059-709•RevH•10/09/13 1
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.
BIR36-B
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.

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/132
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 13
F. ProtectiveMetalHearthStrips 14
G.OutsideAirKit 15
4 Chimney and Termination Requirements
A.ChimneyRequirements 16
B.Offsets/Returns 17
C.TerminationRequirements 18
5 Chimney Installation
A.TypicalChimneySystem 19
B.AssembleChimneySections 20
C.InstallChimneyAirKit 20
D.SecureOffset/Return 21
E.InstallCeilingFirestops 21
F. InstallAtticInsulationShield 22
G.RoofPenetration 23
H.InstallChase/ChaseTop 23
I. TerminationCapRequirements 24
J. InstallTerminationCap 24
6 Shrouds
A.RadiationShield 26
B.FieldConstructedShrouds 26
1.OpenTopShroud 26
2.MailboxStyleShroud 27
3.RoofedStyleShroud 27
7 Finishing
A.FinishingMaterial 28
B.HearthExtension,BuildingandFinishing 30
1.FireplaceInstalledFlushontheFloorand
 HearthExtensionRaisedtoBottomofFirebox
 Opening 31
2.RaisedHearthExtensionandRaisedFireplace 32
3.FireplaceOpeningandHearthExtensionFlush
 withtheFloor 33
C.Non-CombustibleSealantMaterial 33
D.MantelandWallProjections 34
E.Sidewalls/Surrounds 34
8 Fireplace Setup
A.InstallHearthMoldedBrickPanel 35
B.InstallBackMoldedBrickPanel 35
C.InstallSideMoldedBrickPanel 35
D.InstallScreens 36
E.InstallMortar(Optional) 36
F. Grate 36
G.GasLog/LighterProvision 37
H.WoodBurningInserts 37
9 Reference Materials
A.ChimneyComponents 38
B.OptionalComponents 42
►

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/13 3
Customer:
Lot/Address
Model (circle one): BIR36-B
Fireplace Install YES IF NO, WHY?
Protectivehearthstripsinstalledpermanualrequirements.(Pg.14)
Outsideairkitinstalled.(Pg15)
Chimne
y
Section 4 & 5 (Pg. 16)
Atticinsulationshieldinstalled.
Shrouds Section 6 (Pg. 26)
Shroudisinstalledproperlyperinstructions.
Finishing Section 7 (Pg. 28)
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.13)
Hearthextensionsize/heightdecided.(Pg.30)
Chimneyconfigurationcomplieswithdiagrams.
Chimneyinstalled,lockedandsecuredinplacewithproperclearance.
Chimneyairkitinstalled.
Firestops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.
Terminationsinstalled.
Combustible materials not installed in non
-
combustible areas
Hearthextensioninstalledpermanualrequirements.
Fireplace Setup Section 8 (Pg. 35)
Hearth & Home Technologies recommends the following:
Commentscommunicatedtopartyresponsible
4059-711•RevC•3-25-13
Verifiedallclearancesmeetinstallationmanualrequirements.
Mantelsandwallprojectionscomplywithinstallationmanualrequirements.
Allpackagingandprotectivematerialsremoved.
Optionaldoorsproperlyinstalled.
Moldedbrickpanelsinstalledcorrectly.
Grateisproperlyinstalled.
Firescreeninstalledproperly.
__________________________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.
•Photographingtheinstallationandcopyingthischecklistforyourfile.
Combustible materials not installed in non
-
combustible areas
.

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/134
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anyunventedgaslogsets
• 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systemhasbeentestedandlistedinaccor-
dancewithUL127StandardsbyUnderwritersLaborato-
riesInc.forinstallationandoperationintheUnitedStates.
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op-
tionalcomponentsmaybepurchasedseparatelyandin-
stalledatalaterdate.Installationofanoutsideairkitwill
requiresignicantreconstructionandisbestifinstalledat
thetimeofreplaceinstallation.
HeatilatorisaregisteredtrademarkofHearth&Home
Technologies.

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/13 5
2 Getting Started
A. Typical Fireplace System
Figure 2.1 Typical Fireplace System
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 supports
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)
Combustible
framing/header
on top of
V-shaped
standoffs
(spacers)
Chimney system
Attic insulation shield must
be used here to keep insulation away
from chimney if attic is insulated
Storm Collar
Outside Air
(both sides)

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/136
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1-1/2in.airclearanceatthebackand
aminimum1-1/2in.airclearancetothesidesof
thereplaceassemblymustbemaintained.
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.
A*
F
D
BC
1/2 in. (13 mm) all
configurations
1-1/2 in. min. air space
from fireplace to
combustible materials.
1/2 in. min. air space at
nailing flanges.
Note:
In an exterior chase
or projecting into a
garage
Across a
corner
As a
room
divider Along a wall
78 in.
(1981 mm)
G
B
E
48 in.
(1219 mm)
MINIMUM
24 in. (610 mm)
from fireplace opening to
any perpendicular wall
A
B
G
G
B
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)))))))))))))))
)
)
)
)
)
)
)
)))))))))))))))
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
))
)
))
)
)
)
)
)
Model # A B C D E F G
in. 72 47 7/8 89 1/8 44 5/8 20 3/8 63 1/8 28 1/2
mm 1829 1216 2264 1133 518 1603 724
BIR36
* 12 in. (305 mm) extra space
included for each outside air
connection. If outside air duct
has no bend, this dimension
may be reduced as long as
minimum clearances are met.
Considerationshouldbegiventothesefactorsbefore
decidingonalocation.

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/13 7
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
Section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.

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/138
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
- Molded brick panels (hearth panel Included with
replace,sideandbackpanelssoldseparately)
- Firescreen(includedwithreplace)
- HearthExtension(soldseparately)
- Grate(includedwithreplace)
• OutsideAirSystem
- AirInletHood(includedwithreplace)
- Flex(required,soldseparately
• ChimneySystem
- Atticinsulationshield(includedwithreplace)
- Chimneyterminationcap(soldseparately)
• Non-combustiblenishmaterial

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/13 9
74 1/8 in.
(1884 mm)
3 3/4 in.
(95 mm)
70 3/4 in.
(1797 mm)
67 3/8 in.
(1797 mm)
61 7/8 in.
(1572 mm)
54 in.
(1372 mm)
38 in.
(965 mm)
5 1/2 in.
(140 mm)
5 in.
(129 mm)
16 1/8 in.
(408 mm)
6 7/8 in.
(175 mm)
11 1/8 in.
(282 mm)
Gas Line
Knockout
11 in.
(281 mm) diameter
11 in.
(281 mm)
27 1/2 in.
(699 mm)
15 1/2 in.
(394 mm)
31 1/8 in.
(790 mm)
74 ° TYP.
5 in.
(129 mm)
16 1/8 in.
(408 mm)
11 1/8 in.
(282 mm)
6 7/8 in.
(175 mm)
46 7/8 in.
(1191 mm)
36 in.
(914 mm)
Gas Line
Knockout
3 Framing and Clearances
A. Fireplace Dimensions
Figure 3.1 Fireplace Dimensions

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/1310
(insulation)
Attic
Insulation
Shield
(ceiling)
(roof)
(attic)
(ceiling)
Ceiling Firestop
Offset/Return (secured
with hanger straps)
Storm Collar
Roof Flashing
1-1/2 in. (38 mm) to back &
sides of appliance
(except at nailing flanges
where it is 1/2 in. [13 mm])
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
Combustible Object
48 in.
1219 mm
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 1-1/2in.(38mm)
Fireplacetosidewall 1-1/2in.(38mm)
Topstandoffstoheader 0in.(0mm)
Dooropeningtosidewall 24in.(610mm)
MANTEL
Mantelminimumheight 63-3/4in.(1619mm)
Maximummanteldepth 12in.(305mm)

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/13 11
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berglass
insulation.
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
Storm Collar
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.
WARNING! You must install false ceilings and ceil-


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.

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/1312
B
C
A
2 in. (51 mm)
min. air space
clearance
from chimney.
Header MUST NOT be notched!
D
D = extra space needed for outside air connection.
If outside air duct has no bend, this dimension may be
reduced as long as minimum clearances are met.
D
A B * C ** D
in. 47 7/8 28 1/2 74 1/4 12
mm 1216 724 1886 305
Model #
* If interior of chase will be drywalled, add the thickness to this measurement.
** Adjust header height for raised floor under fireplace.
BIR36
The fireplace header cannot be positioned until
after the fireplace assembly is in place.
Framing must be extended straight up, all
the way to the ceiling.
1/2 in.
(13 mm)
Fireplace must be set out
1/2 in. (13 mm) in front of
the face of the framing
material.
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3-3/4”,ifyouwantahigher
raisedhearththereplacemustbeplacedonaplatform.
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re-
place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28-1/2in.
(673mm)fromthenishedbackwalltotheoutsideoffront
wallframing.Framingmustextendstraightupalltheway
totheceiling.
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 1-1/2 in. (38 mm) air clearance must be
maintained at the back and sides of the fireplace
assembly.
• Chimneysectionsatanylevelrequirea2in.(51mm)
minimum air space clearance between the framing and
chimney section.
CAUTION! RiskofCuts/Abrasions.Wearprotectivegloves
and safety glasses during installation. Sheet metal edges
are sharp.
Figure 3.5 Framing the Fireplace

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/13 13
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.Slidethereplace
intoposition.Besuretoprovidetheminimum1-1/2in.
airclearanceatthesidesand1-1/2in.atthe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.

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/1314
1 in. (25 mm) overlap
Minimum
Metal strips are placed 2 in. (51 mm)
under the front of the fireplace and must
extend beyond the front and sides of
fireplace opening by 2 in. (51 mm).
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 3.7. See Section 6 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! 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.

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/13 15
3 ft min. from
top of uppermost
chimney section
to air inlet.
G. Outside Air Kit
Outsideairkitsmustbeusedforcombustionandtopro-
videcoolingairtopreventoverheating.Hearth&Home
Technologiesrecommendsyouutilizetheshortestduct
runtooptimizetheperformanceoftheoutsideairkit.The
outsideairinlethoods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verti-
cally.Insuchaninstallation,a3ft(914mm)heightdiffer-
encemustbemaintainedfromthetopoftheuppermost
chimneysectiontotheoutsideairinlethoods.
RefertoFigures3.8and3.9whenplacingtheoutsideair
inlethoods.
CAUTION! Risk of Cuts/Abrasions. Wearprotective
gloves and safety glasses during installation. Sheet metal
edges are sharp.
CAUTION! 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. Figure 3.8 Outside Air Inlet Locations
Figure 3.9 Outside Air Installation
Outside air installed
on both sides (right
side not shown)
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.
• Cuta6in.(152mm)holeinoutsidewalltoaccommodate
airpiping.
• Use6in.(152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hoods.
• Seal between the wall and the pipe with silicone to
preventmoisturepenetrationandairleaks.
• Sealbetweentheoutsideairinlethoodsandthehouse
withsiliconetopreventairinltration.
NOTICE: The fireplace provides some outside air for
combustion. Other methods may be necessary if more air
is required.
WARNING! Risk of Fire! Theoutsideairkitsareinstalled
onthebothsidesofthereplacetopreventoverheating
andre..

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/1316
20 ft (6.10 m) max.
pipe between an
offset & return
Ceiling firestop
35 ft (10.7 m)
max. straight
unsupported
chimney height
18.5 ft (5.64 m)
min. height
single offset-return
90 ft (27.4 m)
max. height
6 ft (1.83 m) max.
unsupported chimney
above roof
74 1/8 in.
(1884 mm)
Effective
Height
Figure 4.1 Chimney Requirements
NOTICE: Amaximumoftwopairsofoffsetsandreturns
may be used.
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
• Minimumoverallstraightheight 18ft (5.5m)
• Minimumheightwithoffset/return 18.5ft (5.64m)
• Maximumheight 90ft (27.43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)
HEIGHT OF CHIMNEY COMPONENTS in. mm
Chimney Stabilizer
SL11 4-3/4 121
Offsets/Returns
SL1130 18 457
Chimney Sections*
SL1106 4-3/4 121
SL1112 10-3/4 273
SL1118 16-3/4 425
SL1136 34-3/4 883
SL1148 46-3/4 1187
* Dimensions reect effective height.

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/13 17
Table 4.3 Offset Dimensions
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
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15-3/4in.(400mm)us-
inga30°offset/return.
Youdeterminefromthetablethatyouneed36-5/8in.
(930mm)(Dimension“B”)betweentheoffsetandreturn.
Thechimneycomponentsthatbesttsyourapplication
aretwoSL1112’s.
A B
SL1106 SL1112 SL1118 SL1136 SL1148in. mm in. mm
47/8 124 177/8 454 - - - - -
71/4 184 22 559 1 - - - -
93/4 248 261/8 664 2- - - -
101/4 260 271/4 692 - 1 - - -
123/4 324 313/8 797 1 1 - - -
131/4 337 323/8 822 - - 1 - -
153/4 400 365/8 930 - 2- - -
181/8 460 403/4 1035 1 2- - -
183/4 476 413/4 1060 - 1 1 - -
213/4 552 47 1194 - - 2- -
221/4 565 48 1219 - - - 1 -
243/4 629 521/8 1324 1 - - 1 -
273/4 705 573/8 1457 - 1 - 1 -
281/4 718 583/8 1483 - - - - 1
303/4 781 621/2 1588 1 - - - 1
333/4 857 673/4 1721 - 1 - - 1
363/4 933 73 1854 - - 1 - 1
393/4 1010 781/8 1984 - - - 2-
411/8 1045 823/8 2092 1 - - 2-
453/4 1162 881/2 2248 - - - 1 1
481/8 1222 923/4 2356 1 - - 1 1
513/4 1314 987/8 2511 - - - - 2
Properassemblyofaircooledchimneypartsresultsinanoverlapofchimneyjoints
of1-1/4in.(32mm).Effectivelengthisbuiltintothistable.

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/1318
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.

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/13 19
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
5 Chimney Installation
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

Heatilator • Birmingham 36-B Installation Manual • 4059-709 • Rev H • 10/09/1320
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
C. Install Chimney Air Kit
• RequiredinCanada.
• Followinstructionsincludedwithaccessory.