Heat & Glo Wood Burning Fireplace HST-42D User manual

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): • 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.
Owner’s Manual
Operation and Care
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 fl 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.
NOTICE: DO NOT discard this manual!
Contact your dealer with questions on installation, operation, or service.
Heat&Glo•HST-42DOwnerManual•4012-065•RevD•11/13/13
HST-42D

2
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 Welcome
A.Congratulations 3
B.LIMITEDLIFETIMEWARRANTY 4
2 Product Specic and General Information
ApplianceCertication 6
B.VentedGasLogSets,GasInserts,GasLogLighters
 andWood-burningInserts 6
3 Important Safety and Operating Information
A.FireplaceSafety 7
1.ClearSpace 7
2.Grate 8
3.Refractory 8
4.Firescreen 8
5.FlueDamper 8
6.GlassDoors 8
7.Over-FiringYourFireplace 8
8.ChimneyFire 8
B.GeneralOperatingParts 9
1.FlueDamper 10
2.OutsideAir 10
3.GlassDoors 10
C.Fuel 11
1.Hardwoodvs.Softwood 11
2.Moisturecontent 11
3.Seasoning 12
4.StoringWood 12
5.BurningProcess 12
6.CreosoteFormation 12
7.ProcessedSolidFuelFirelogs 12
D.FirstFire 12
E.LightingInstructions 13
4 Maintenance and Service
A.ChimneyInspection 14
B.Creosote(Chimney)Cleaning 15
C.Grate 16
D.GlassCleaning 16
E.AshRemoval 16
F. Refractory 16
5 Troubleshooting
A.FAQs 18
6 Reference Materials
A.ServiceParts 20
B.Accessories 22
C.ContactInformation 24
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13
►

3
Readthismanualbeforeinstallingoroperatingthisreplace.
Pleaseretainthisowner’smanualforfuturereferences.
A. Congratulations
Listing Label Information/Location Themodelinformationregardingyourspecicreplacecanbefoundon
theratingplateusuallylocatedinthecontrolareaofthereplace.
1 Welcome
Brand: ________________________________________________ ModelName: ___________________________
SerialNumber:__________________________________________ DateInstalled: __________________________
Fireplace Information:
Local Dealer Information
DEALER: Fill in
your name, address,
phone and e-mail
information here and
replaceinformation
below.
DealerName:________________________________________________________
Address:____________________________________________________________
____________________________________________________________
Phone:_____________________________________________________________
E-mail:_____________________________________________________________
Grate Fireplace
Model
Serial
Number
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13
CongratulationsonselectingaHeat&Glowoodburning
replace.TheHeat&Gloreplaceyouhaveselectedis
designedtoprovidetheutmostinsafety,reliability,and
efciency.
Astheownerofanewreplace,you'llwanttoreadand
carefullyfollowalloftheinstructionscontainedinthis
Owner'sManual.PayspecialattentiontoallCautionsand
Warnings.
ThisOwner'sManualshouldberetainedforfuturerefer-
ence.Wesuggestthatyoukeepitwithyourotherimpor-
tantdocumentsandproductmanuals.
YournewHeat&Glowoodburningreplacewillgiveyou
yearsofdurableuseandtrouble-freeenjoyment.Wel-
cometotheHeat&Glofamilyofreplaceproducts!
Heat&GloisaregisteredtrademarkofHearth&Home
Technologies.
FIREPLACE NO.
MODEL NO.
MODEL NO.
MFG. DATE
WARNING: RISK OF
FIRE DAMAGE. REPLACE
GRATE WITH HEARTH & HOME
TECHNOLOGIES
FIRECHAMBER INTENDED FOR USE WITH HEARTH & HOME TECHNOLOGIES LISTED FIREPLACE PARTS. SEE INSTALLATION AND
OPERATING INSTRUCTIONS FOR THIS MODEL. ONLY HEARTH & HOME TECHNOLOGIES GLASS DOOR KITS CAN BE INSTALLED ON THIS UNIT.
FIREPLACE ALSO FOR USE
IN MANUFACTURED HOMES
YES NO
CLEARANCE TO
COMBUSTIBLES:
CHIMNEY
2 IN. MIN.
FIREBOX
IN.
MIN.
FAN KIT
MODEL NO.
& RATED AT
115 VOLTS, 50/60 Hz., AMP.
DO NOT OVERFIRE. USE ONLY: SOLID WOOD FUEL OR
LISTED DECORATIVE GAS APPLIANCE. DO NOT USE A
FIREPLACE INSERT OR OTHER PRODUCTS NOT
SPECIFIED FOR USE WITH THIS PRODUCT. IF DOORS
ARE USED OPERATE FIREPLACE WITH DOORS FULLY
OPEN OR CLOSED ONLY. WHEN BURNING A
DECORATIVE GAS APPLIANCE IN THE FIREPLACE,
ADJUST DAMPER TO THE FULLY OPEN POSITION.
WARNING! THIS FIREPLACE HAS NOT BEEN TESTED WITH AN UNVENTED
GAS LOG SET. TO REDUCE THE RISK OF FIRE OR INJURY, DO NOT
INSTALL AN UNVENTED GAS LOG SET INTO FIREPLACE.
WARNING! THIS APPLIANCE IS NOT FOR USE AS COOKING EQUIPMENT.
IF INSTALLATION OR OPERATING INSTRUCTIONS ARE MISSING
CONTACT: HEARTH & HOME TECHNOLOGIES,
7571 215th Street West, Lakeville, MN 55044

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4021-645F02-18-13 Page1of2
Hearth & Home Technologies
LIMITED LIFETIME WARRANTY
Hearth&HomeTechnologies,onbehalfofitshearthbrands(”HHT”),extendsthefollowingwarrantyforHHT
gas,wood,pellet,coalandelectrichearthappliancesthatarepurchasedfromanHHTauthorizeddealer.
WARRANTY COVERAGE:
HHTwarrantstotheoriginalowneroftheHHTapplianceatthesiteofinstallation,andtoanytransfereetakingownership
oftheapplianceatthesiteofinstallationwithintwoyearsfollowingthedateoforiginalpurchase,thattheHHTappliance
willbefreefromdefectsinmaterialsandworkmanshipatthetimeofmanufacture.Afterinstallation,ifcoveredcompo-
nentsmanufacturedbyHHTarefoundtobedefectiveinmaterialsorworkmanshipduringtheapplicablewarrantyperiod,
HHTwill,atitsoption,repairorreplacethecoveredcomponents.HHT,atitsowndiscretion,mayfullydischargeallofits
obligationsundersuchwarrantiesbyreplacingtheproductitselforrefundingtheverifiedpurchasepriceoftheproduct
itself.Themaximumamountrecoverableunderthiswarrantyislimitedtothepurchasepriceoftheproduct.Thiswarranty
issubjecttoconditions,exclusionsandlimitationsasdescribedbelow.
WARRANTY PERIOD:
Warrantycoveragebeginsonthedateoforiginalpurchase.Inthecaseofnewhomeconstruction,warrantycoverage
beginsonthedateoffirstoccupancyofthedwellingorsixmonthsafterthesaleoftheproductbyanindependent,
authorizedHHTdealer/distributor,whicheveroccursearlier.Thewarrantyshallcommencenolaterthan24months
followingthedateofproductshipmentfromHHT,regardlessoftheinstallationoroccupancydate.Thewarrantyperiodfor
partsandlaborforcoveredcomponentsisproducedinthefollowingtable.
Theterm“LimitedLifetime”inthetablebelowisdefinedas:20yearsfromthebeginningdateofwarrantycoveragefor
gasappliances,and10yearsfromthebeginningdateofwarrantycoverageforwood,pellet,andcoalappliances.These
timeperiodsreflecttheminimumexpectedusefullivesofthedesignatedcomponentsundernormaloperatingconditions.
Seeconditions,exclusions,andlimitationsonnextpage.
Parts Labor Gas Wood Pellet EPA
Wood
Coal Electric Venting
XXXXXXX
Allpartsandmaterialexceptas
coveredbyConditions,
Exclusions,andLimitations
listed
XXX Igniters,electroniccomponents,
and glass
X X X X X Factory-installedblowers
X Moldedrefractorypanels
X Firepotsandburnpots
5years 1year X X Castingsandbaffles
7years 3years X X X Manifoldtubes,
HHTchimneyandtermination
10
years
1year X Burners,logsandrefractory
Limited
Lifetime
3years X X X X X Fireboxandheatexchanger
XXXXXXX Allreplacementparts
beyondwarrantyperiod
WarrantyPeriod HHTManufacturedAppliancesandVenting
1Year
ComponentsCovered
3years
2years
90Days
B. LIMITED LIFETIME WARRANTY
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13

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4021-645F02-18-13 Page2of2
WARRANTY CONDITIONS:
• ThiswarrantyonlycoversHHTappliancesthatarepurchasedthroughanHHTauthorizeddealerordistributor.Alistof
HHTauthorizeddealersisavailableontheHHTbrandedwebsites.
• ThiswarrantyisonlyvalidwhiletheHHTapplianceremainsatthesiteoforiginalinstallation.
•ThiswarrantyisonlyvalidinthecountryinwhichtheHHTauthorizeddealerordistributorthatsoldtheappliance
resides.
• Contactyourinstallingdealerforwarrantyservice.Iftheinstallingdealerisunabletoprovidenecessaryparts,contact
thenearestHHTauthorizeddealerorsupplier.Additionalservicefeesmayapplyifyouareseekingwarrantyservice
fromadealerotherthanthedealerfromwhomyouoriginallypurchasedtheproduct.
• Checkwithyourdealerinadvanceforanycoststoyouwhenarrangingawarrantycall.Travelandshippingcharges
forpartsarenotcoveredbythiswarranty.
This warranty is void if:
• Theappliancehasbeenover-firedoroperatedinatmospherescontaminatedbychlorine,fluorine,orotherdamaging
chemicals.Over-firingcanbeidentifiedby,butnotlimitedto,warpedplatesortubes,rustcoloredcastiron,bubbling,
crackinganddiscolorationofsteelorenamelfinishes.
• Theapplianceissubjectedtoprolongedperiodsofdampnessorcondensation.
• Thereisanydamagetotheapplianceorothercomponentsduetowaterorweatherdamagewhichistheresultof,but
notlimitedto,improperchimneyorventinginstallation.
LIMITATIONS OF LIABILITY:
• Theowner’sexclusiveremedyandHHT’ssoleobligationunderthiswarranty,underanyotherwarranty,expressor
implied,orincontract,tortorotherwise,shallbelimitedtoreplacement,repair,orrefund,asspecifiedabove.Inno
eventwillHHTbeliableforanyincidentalorconsequentialdamagescausedbydefectsintheappliance.Somestates
donotallowexclusionsorlimitationofincidentalorconsequentialdamages,sotheselimitationsmaynotapplytoyou.
Thiswarrantygivesyouspecificrights;youmayalsohaveotherrights,whichvaryfromstatetostate.EXCEPTTO
THEEXTENTPROVIDEDBYLAW,HHTMAKESNOEXPRESSWARRANTIESOTHERTHANTHEWARRANTY
SPECIFIEDHEREIN.THEDURATIONOFANYIMPLIEDWARRANTYISLIMITEDTODURATIONOFTHE
EXPRESSEDWARRANTYSPECIFIEDABOVE.
WARRANTY EXCLUSIONS:
Thiswarrantydoesnotcoverthefollowing:
• Changesinsurfacefinishesasaresultofnormaluse.Asaheatingappliance,somechangesincolorofinteriorand
exteriorsurfacefinishesmayoccur.Thisisnotaflawandisnotcoveredunderwarranty.
• Damagetoprinted,plated,orenameledsurfacescausedbyfingerprints,accidents,misuse,scratches,melteditems,
orotherexternalsourcesandresiduesleftontheplatedsurfacesfromtheuseofabrasivecleanersorpolishes.
• Repairorreplacementofpartsthataresubjecttonormalwearandtearduringthewarrantyperiod.Theseparts
include:paint,wood,pelletandcoalgaskets,firebricks,grates,flameguides,batteriesandthediscolorationofglass.
• Minorexpansion,contraction,ormovementofcertainpartscausingnoise.Theseconditionsarenormalandcom-
plaintsrelatedtothisnoisearenotcoveredbythiswarranty.
• Damagesresultingfrom:(1)failuretoinstall,operate,ormaintaintheapplianceinaccordancewiththeinstallation
instructions,operatinginstructions,andlistingagentidentificationlabelfurnishedwiththeappliance;(2)failureto
installtheapplianceinaccordancewithlocalbuildingcodes;(3)shippingorimproperhandling;(4)improperopera-
tion,abuse,misuse,continuedoperationwithdamaged,corrodedorfailedcomponents,accident,orimproperly/
incorrectlyperformedrepairs;(5)environmentalconditions,inadequateventilation,negativepressure,ordrafting
causedbytightlysealedconstructions,insufficientmake-upairsupply,orhandlingdevicessuchasexhaustfansor
forcedairfurnacesorothersuchcauses;(6)useoffuelsotherthanthosespecifiedintheoperatinginstructions;(7)
installationoruseofcomponentsnotsuppliedwiththeapplianceoranyothercomponentsnotexpresslyauthorized
andapprovedbyHHT;(8)modificationoftheappliancenotexpresslyauthorizedandapprovedbyHHTinwriting;
and/or(9)interruptionsorfluctuationsofelectricalpowersupplytotheappliance.
• Non-HHTventingcomponents,hearthcomponentsorotheraccessoriesusedinconjunctionwiththeappliance.
• Anypartofapre-existingfireplacesysteminwhichaninsertoradecorativegasapplianceisinstalled.
• HHT’sobligationunderthiswarrantydoesnotextendtotheappliance’scapabilitytoheatthedesiredspace.Informa-
tionisprovidedtoassisttheconsumerandthedealerinselectingtheproperappliancefortheapplication.Consider-
ationmustbegiventoappliancelocationandconfiguration,environmentalconditions,insulationandairtightnessof
thestructure.
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6
2 Product Specic and General Information
Warning! Risk of Fire!
For use with solid wood fuel only.
Otherfuelsmayoverreandgeneratepoisonousgases
(i.e. carbon monoxide).
B. Vented Gas Log Sets, Gas Inserts, Gas
Log Lighters and Wood-burning Inserts
• Optional
• Vented gas log sets, gas inserts, gas log-lighters or
wood-burninginsertscanbeinstalledinthisreplace.
Followtheinstructionsprovidedwiththeaccessoryfor
operation.
WARNING! Risk of Fire or Asphyxiation!
• DO NOTinstallunventedgaslogs.
• Dampermustbelockedopen.
• Gasamemaygeneratefumes.
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13
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.
Heat&GloisaregisteredtrademarkofHearth&Home
Technologies.
Appliance Certication
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.

7
A. Fireplace Safety
Mostproblemsarecausedbyimproperinstallationandop-
erationofthereplace.Toprovidereasonableresafety,
thefollowingshouldbegivenseriousconsideration:
• Thereshouldbesupervisedwheneverthereplaceis
inuse.
• An annual inspection should be performed on the
replacesystem.
• Installatleastonesmokedetectoroneachoorofyour
hometoensureyoursafety.
• InstallaconvenientlylocatedClassAreextinguisher
nearthereplace.
• Deviseapracticedevacuationplan,consistingofatleast
twoescaperoutes.
• Deviseaplantodealwithachimneyre:
- Evacuate.
- Notifytheredepartment.
3 Important Safety and Operating Information
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:
• operatedamagedreplace
• modifyreplace
• overre
• installanyunventedgaslogset
• installanycomponentnotapprovedbyHearth&Home
Technologies
• installpartsorcomponentsnotListedorapproved
• operate the fireplace without fully assembling all
components
Improper installation, adjustment, alteration, service or
maintenancecancauseinjuryorpropertydamage.
1. Clear Space
Combustiblematerialsmustnotbestoredonthehearth
extension.Roomfurnishingssuchasdrapes,curtains,
chairs or other combustibles must be at least 4ft
(1219mm)fromthefrontofthereplace.
Combustible materials are materials made of or sur-
facedwithanyofthefollowingmaterials:
- Wood - Compressedpaper
- Plantbers - Plastic
- Plywood/OSB - Drywall
- Anymaterialthatcanigniteandburn,ameproofed
ornot,plasteredorun-plastered.
WARNING! Risk of Fire! Keep combustible materials,
gasolineandotherammablevaporsandliquidsclearof
thereplace.
DO NOT:
• storeammablematerialsclosetothereplace
• use gasoline, lantern fuel, kerosene, charcoal lighter
uidorsimilarliquidstostartor“freshenup”areinthis
replace.
48 in. (1219 mm)
Clear Space
Front of Fireplace 12 in. (305 mm)
Clear Space
Sides of Fireplace
(from the FP
opening)
40 3/8 in. (1026 mm)
Clear Space
Bottom of Fireplace to
Lower Edge of
Mantel or Trim
Figure 3.1 Clear Space
Non-combustiblematerialsarematerialswhichwillnot
igniteandburn,composedofanycombinationofthe
following:
- Steel - Iron
- Brick - Tile
- Concrete - Slate
- Glass - Plasters
Heat&Glo•HST-42DOwnerManual•4012-065•RevD•11/13/13

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8. Chimney Fire
Intheeventofachimneyre
• Havethechimneyandadjacentstructureinspectedby
qualiedprofessionals.Hearth&HomeTechnologies
recommendsthatNFIorCSIAcertiedprofessionals,
or technicians under the direction of certified
professionals,conductaminimumofanNFPA 211
Level 2 inspectionofthechimney.
• Replacecomponentsofthechimneyandreplace
asspeciedbytheprofessionals.
• Ensure all joints are properly engaged and the
chimneyisproperlysecured.
WARNING! Risk of Fire! A chimney re can perma-
nently damage your chimney system. Failure to re-
placedamagedcomponentsandmakeproperrepairs
cancauseastructurere.
7. Over-Firing Your Fireplace
WARNING! Risk of Fire! Donotover-re.
Over-firing may ignite creosote or will damage the
replaceandchimney.
Symptomsofover-ringmayincludeoneormoreofthe
following:
• chimneyconnectororreplaceglowing
• roaring,rumblingnoises
• loudcrackingorbangingsounds
• metalwarping
• chimneyre
Topreventover-ringyourreplace.DONOT:
• useammableliquids
• overloadwithwood
• burntrashorlargeamountsofscraplumber
• permittoomuchairtothere
2. Grate
Thisreplaceisdesignedtobeusedwiththesupplied
grateoroneapprovedbyHHT.
WARNING! Risk of Fire! Use only the factory-sup-
pliedintegralgrate.
• Keepslogsinplace.
• Allowsproperaircirculationaroundthere.
3. Refractory
Therefractoryissuppliedtocontainheatandprovide
anattractiveinterior.
 Itwillbreakdownovertimeandwillneedoccasional
replacement. Small hairline cracks and discoloration
arenormalanddonotaffectitssafety.
WARNING! Risk of Fire! DO NOT burnreplacewith-
out refractory. Use only refractory supplied by Hearth &
HomeTechnologies.
4. Firescreen
The rescreen is provided to control sparks. Keep it
closedwhenthereplaceinuse.
WARNING! Risk of Fire or Burns!
• Screenwillnotpreventburningmaterialsfromfalling
out.
• Screenpullsorhandlesmaybehot.
5. Flue Damper
Theuedampermustbe inthefullyopenedposition
duringoperationofthereplace.
WARNING! Risk of Fire and Asphyxiation! Open
damperpriortooperatingreplace.Acloseddamper
overresthereplaceandspillssmokeandames
into the room.
6. Glass Doors
Glassdoorsareoptional.
WARNING! Risk of Fire! InstallONLYdoorsapproved
byHearth&HomeTechnologies.
WARNING! Risk of Fire and Smoke! Fireplace
equipped with doors should be operated only with
doors fully open or doors fully closed. If doors are left
partlyopen, gas and ame maybe drawnout of the
replaceopening.
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9
B. General Operating Parts
WARNING! DO NOT operatereplacebeforereadingandunderstandingoperatinginstructions.Failuretooperatere-
placeaccordingtooperatinginstructionscouldcausereorinjury.
WARNING
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 fl ammable materials.
• Keepclothing,furniture,draperiesandotherammablematerialsaway.
HOT SURFACES!
GlassandothersurfacesarehotduringoperationANDcooldown.
Damper
Handle Air Kit
Handle
open
(out)
close
(in)
open
close
Figure 3.2 General Operating Parts
CAUTION! Ifyouexpectthatchildrenmaycomeintocontactwiththisreplace,werecommendabarriersuchasadecorative
screen.Seeyourdealerforsuggestions.
Heat&Glo•HST-42DOwnerManual•4012-065•RevD•11/13/13

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3. Glass Doors
• Glassdoorsareoptional.
• RefertoFigure3.3forhowtoproperlyusethem.
1. Flue Damper
RefertoFigure3.2forlocationandoperationofcon-
trol.
Beforelightingthereplace,verifyfullyopenposition
bylookingupfromtheinsideofthereplace. PARTLY OPEN
INCORRECT
FULLY OPEN
CORRECT
PARTLY CLOSED
INCORRECT
FULLY CLOSED
CORRECT
Figure 3.3 Operating Positions of Bi-fold Doors
RefertoFigure3.2forlocationandoperationofcontrol.
The outside air kit supplies some combustion air for
yourreplace.Itmayhelpreducetheeffectsofnega-
tiveairpressure.
Closetheinlettopreventcolddraftswhenthereplace
isnotbeingused
2. Outside Air
CAUTION! Outside air control handle may be warm.
Adjustbeforelightingre.
Heat&Glo•HST-42DOwnerManual•4012-065•RevD•11/13/13

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WARNING! Risk of Fire!
• DO NOTburnwetorgreenwood.
• Wet, unseasoned wood can cause accumulation of
creosote.
Softwoods Hardwoods
• DouglasFir • Oak
• Pine • Maple
• Spruce • Apple
• Cedar • Birch
• Poplar
• Aspen
• Alder
C. Fuel
1. Hardwood vs. Softwood
Yourreplace’sperformancedependsonthequalityof
therewoodyouuse.Onespeciesofwoodvariesvery
little to the other in terms of energy content.All sea-
soned wood contains about 8,000 BTU’s per pound.
Hardwoods have a greater density than softwoods; a
pieceofhardwoodwillcontainabout60%moreBTU’s
than an equal size piece of softwood.A cord of sea-
sonedoak(hardwood)wouldcontainabout60%more
potential energy than a cord of seasoned pine (soft-
wood).
Most softwoods are coniferous. These are trees with
needle-like leaves that stay green all year and carry
their seeds exposed in a cone. Examples of conifer-
oustreesareDouglasr,pine,spruceandcedar.Soft-
woods, being more porous, require less time to dry,
burn faster and are easier to ignite than hardwoods.
Hardwoods are deciduous trees, broadleaf trees that
lose their leaves in the fall. Their seeds are usually
foundwithin a protectivepod or enclosure.Some ex-
amplesofdeciduoustreesareoak,maple,apple,and
birch.However,itshouldbenotedthattherearesome
deciduoustreesthataredenitelynotconsideredhard-
woods such as poplar, aspen and alder. Hardwoods
requiremoretimetoseason,burnslowerandareusu-
allyhardertoignitethansoftwoods.Obviously,youwill
usethe type ofwood that ismost readily availablein
yourarea.However,ifatallpossiblethebestarrange-
mentistohaveamixofsoftwoodandhardwood.This
wayyoucanusethesoftwoodforstartingthere,giv-
ingoffquickheattobringthereplaceuptooperating
temperature.Addthehardwoodforslow,evenheatand
longerburntime.
2. Moisture content
The majority of the problems replace owners expe-
rienceare caused by trying to burn wet, unseasoned
wood.Freshlycutwoodcanbeasmuchwaterasitis
wood,havingamoisturecontentofaround50%.Imag-
ineawoodenbucketthatweighsabout8pounds.Fillit
withagallonofwater,putitinthereboxandtrytoburn
it.Thissoundsridiculousbutthatisexactly what you
are doing if you burn unseasoned wood. Dead wood
lyingontheforestoorshouldbeconsideredwet,and
requiresfullseasoningtime.Standingdeadwoodcan
beconsideredtobeabouttwo-thirdsseasoned,ifcutat
thedrytimeoftheyear.
Burningwet,unseasonedwoodwillproducelessheat
outputbecause it requiresenergyin theformof heat
toevaporatethewatertrappedinside.Thisiswasted
energythatshouldbeusedforheatingyourhome.This
moisture evaporates in the form of steam which has
a cooling effect in your rebox and chimney system.
Whencombinedwithtarandotherorganicvaporsfrom
burningwooditwillformcreosotewhichcondensesin
therelativelycoolreboxandchimney.
Even dry wood contains at least 15% moisture by
weight,andshouldbeburnedhotenoughtokeepthe
chimneyhotforaslongasittakestodrythewoodout
-aboutonehour.Totellifwoodisdryenoughtoburn,
checktheendsofthelogs.Iftherearecracksradiating
inalldirectionsfromthecenter,itisdry.Ifyourwood
sizzlesinthere,eventhoughthesurfaceisdry,itmay
notbefullycured.
WARNING! For use with solid wood fuel only.
Otherfuelsmayoverreandgeneratepoisonousgases(i.e.
carbon monoxide).
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13

12
5. Burning Process
Firerequiresfuel,airandheat.Ifheatisrobbedfrom
thereplace duringthe dryingstage, thenew loadof
woodhasreducedthechancesforagoodcleanburn.
Alwaysburndry,seasonedrewood.
6. Creosote Formation
Whenwoodisburnedslowly,itproducestarandother
organicvaporswhichcombinewithexpelledmoisture
to form creosote. The creosote vapors condense in
the relatively cool chimney ue of a newly-started or
a slow-burning re.As a result, creosote residue ac-
cumulatesontheuelining.
When ignited, creosote creates an extremely hot re
which may damage the chimney or even destroy the
house.
Thechimneyshallbe inspected atleastannually be-
forelighting,oronceeverytwomonthsduringheating
season.
Whencreosotehasaccumulateditshallberemovedto
reducetheriskofachimneyre.
7. Processed Solid Fuel Firelogs
Manufacturedrelogsmaybeusedwiththisreplace.
Hearth&HomeTechnologiesrecommendstheuseof
ULClassiedprocessedfuelrelogs.Followthemanu-
facturer’slightingandsafetyinstructions.
Usingrelogsmayrequiremorefrequentchimneyin-
spectionsandcleaning.
Donotpokeorstirthelogswhiletheyareburning.Use
only relogs that have been evaluated for the appli-
cation in manufactured replaces and refer to relog
warningsand cautionmarkings onpackaging priorto
use.
3. Seasoning
Seasonedrewoodisnothingmorethanwoodthatis
cuttosize,splitandairdriedtoamoisturecontentof
around20%.Thetimeittakestoseasonwoodvaries
fromaroundninemonthsforsoftwoodstoaslongas
eighteenmonthsforhardwoods.Thekeytoseasoning
woodistobesureithasbeensplit,exposingthewet
interiorandincreasingthesurfaceareaofeachpiece.
A tree that was cut down a year ago and not split is
likelytohavealmostashighamoisturecontentnowas
itdidwhenitwascut.
Toseasonwood:
• Cutlogstosize
• Splitto6in.(152mm)orless
• Airdrytoamoisturecontentofaround20%
 - Softwood-aboutninemonths
 - Hardwood-abouteighteenmonths
NOTICE: Seasoningtimemayvarydependingondrying
conditions.
4. Storing Wood
Splittingwoodbefore it isstoredreduces drying time.
Thefollowingguidelinewill ensure properly seasoned
wood:
• Stackthewoodtoallowairtocirculatefreelyaround
andthroughthewoodpile.
• Elevate the woodpile off the ground to allow air
circulationunderneath.
• Thesmallerthepieces,thefasterthedryingprocess.
Anypieceover6in.(152mm)indiametershouldbe
split.
• Woodshouldbestackedsothatbothendsofeach
pieceareexposedtoair,sincemoredryingoccurs
throughthecutendsthanthesides.Thisistrueeven
withwoodthathasbeensplit.
• Storewoodundercover,suchasinashed,orcovered
withatarp,plastic,tarpaper,sheetsofscrapplywood,
etc.,asuncoveredwoodcanabsorbwaterfromrain
or snow, delaying the seasoning process.Avoid
covering the sides and ends completely. Doing so
maytrapmoisturefromthegroundandimpedeair
circulation.
D. First Fire
Beforelightingyourrstreinthereplace,makecertain
that:
• refractoryisinplace
• alllabelshavebeenremoved
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13

13
WARNING! Risk of Fire! Keep combustible materials,
gasolineandotherammablevaporsandliquidsclearof
thereplace.
DO NOT:
• storeammablematerialsclosetothereplace
• use gasoline, lantern fuel, kerosene, charcoal lighter
uidorsimilarliquidstostartor“freshenup”areinthis
replace.
E. Lighting Instructions
NOTICE: Youmustestablishagooddrafttopreventsmoke
spillageintotheroom.
Therstthreeorfourresshouldbeofmoderatesizeto
allowtheoilsandbinderstobeburnedfromthereplace
andtherefractoryandpainttocure.Youmaynoticeanin-
dustrialodortherstfewres.Thisisconsiderednormal.
Usewell-seasonedwood.
• Opentheuedampertoafullyopenposition.
• Place crumpled or twisted paper under the replace
grate.
• Looselyarrangekindlingorsmallpiecesofwoodtoform
a‘tent’onthereplacegrate.
• Pre-warm the ue to establish a draft to help reduce
smokespillageduringstart-up.Holdarolleduppiece
ofburningnewspaperundertheuedamperforafew
moments.
• Lightthecrumpledpapertoignitethekindling.
• Addsmallpiecesofwooduntilahotbedofembershas
beenestablished.
• Add a minimum of three average size pieces of split
rewood, placed to allow combustion air and ames
betweenthem.
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13

14
4 Maintenance and Service
WARNING! Hot Surfaces!
GlassandothersurfacesarehotduringoperationANDcool
down. DO NOTcleanreplaceuntilitiscooled.
Installationandrepairshouldbedonebyaqualied
servicetechnicianonly.Thereplaceshouldbeinspected
beforeuseandatleastannuallybyaprofessionalservice
person.
Thefollowingtasksmaybeperformedannuallybythe
homeowner.Ifyouareuncomfortableperforminganyof
thelistedtasks,please contact your dealer for a ser-
vice appointment.
A. Chimney Inspection
Frequency: Asnecessary;atleastannuallybefore
lightingreplace,oronceeverytwomonthsduring
heatingseason.
By: Homeowner/ChimneySweep
• Confirm that termination cap remains clear and
unobstructed.
• Inspectforblockagessuchasbirdnests,leaves,etc.
• Inspectforcorrosionorseparation.
• Inspectforcreosoteandremoveasneeded,atleast
everytwomonthsduringtheheatingseason.
• Inspectthesystematthereplaceconnectionand
atthechimneytop.
Inthe event of a chimneyre, Hearth & HomeTech-
nologiesrecommendsreplacementofthechimneyand
inspectionoftheadjacentstructuretotheprovisionsof
NFPALevelIIIinspectioncriteria.
WARNING! Risk of Asphyxiation and Fire! Annual
inspectionbyqualiedtechnicianrecommended.
 Check:
 • conditionofdoors,surroundsandfronts
 • conditionofglassandglassassembly
 • obstructionsofcombustionandventilationair
 • obstructionsofterminationcap
 Clean:
 • glass
 • airpassageways,grilles
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13

15
Figure 4.1 Chimney & Termination Cap Cleaning
WARNING! Risk of Fire! Ignitedcreosoteisextremely
HOT. Prevent creosote buildup.
B. Creosote (Chimney) Cleaning
Frequency: Asneeded;atleastannuallybeforelight-
ing,oronceeverytwomonthsduringheatingseason.
Whencreosotehasaccumulateditshallberemoved
toreducetheriskofachimneyre.
By: ChimneySweep
Tools Needed:Brush,Phillipsscrewdriver
• When wood is burned slowly, it produces tar and
otherorganicvapors,whichcombinewithexpelled
moisture to form creosote. The creosote vapors
condense in the relatively cool chimney ue of a
slow-burning fire.As a result, creosote residue
accumulates on the ue lining. When ignited, this
creosotemakesanextremelyhotre.
• Removeallashfromthereboxandextinguishall
hot embers before disposal.Allow the replace to
coolcompletely.
• Closethedoortightly.
• Removethetopoftheterminationcapasshownin
Figure4.1tocleanthecapandchimney.
• Thecreosoteorsootshouldberemovedfromthe
chimneywitha brush specicallydesignedfor the
sizeofchimneyinuse.
• Reinstallterminationcap.
• Cleanoutfallendebrisfromtherebox.
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13
Chimney
Remove 4 screws
and lift top pan off.
Cap
Slip
Section
ST375
Square
Termination Cap
Cap
Remove screws,
lift top cover.
Top Cover
TR344/TR342
Round
Termination Cap
Chase
Cap
1. Remove the 4 screws.
2. Remove the screen.
3. Remove the baffle.
TS345/TS345P
Square
Termination Caps
TCT375
Terra Cotta
Termination Cap
Remove 2 screws from
the front and back and
lift the top off.
Remove 8 screws
and lift top.
DTO/DTS Series
Termination Cap
Screw
Top
Top
Screw

16
F. Refractory
Frequency: Asnecessary
By: Homeowner
• Inspect condition of brick. Replace if crumbly or
otherwise deteriorated, or if cracks exceed 1/4 in.
(6mm).
C. Grate
Frequency: Aftereachashremoval
By: Homeowner
Inspectgratefor:
• Warpingorsagging1-1/2in.(38mm)ormore
• Brokenwelds
• Burn-throughofgratebars
 Forsafeoperation,replaceonlywiththeapprovedgrate
fromHearth&HomesTechnologies.
E. Ash Removal
Frequency: Asnecessary
By: Homeowner
Tools Needed:Coveredmetalcontainer,metal
shovel,replacebroom
WARNING! Risk of Fire! DO NOT remove ashes until
thereisoutandthereplaceiscold.
• Ashesshouldbeplacedinmetalcontainerwithtight
ttinglid.
• The closed container of ashes should be placed
on a noncombustible oor or on the ground, well
awayfromallcombustiblematerials,pendingnal
disposal.
• If the ashes are disposed of by burial in soil or
otherwiselocallydispersed,theyshouldberetained
in the closed container until all cinders have
thoroughlycooled.
D. Glass Cleaning
Frequency: Asnecessary
By: Homeowner
Tools Needed:Vinegarorglasscleaner,softtowel
• Cleanglasswithanon-abrasiveglasscleaner.Usea
dampclothdippedinwoodashesoracommercially
availableovencleaner.Removeanyovencleaner
residuewithaglasscleanerorsoapandwater.
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13

17
5 Troubleshooting
Start Fire Problems Possible Cause Solution
Can’tgetrestarted
Excessivesmokeorspillage
Burnstooslowly
Smolders,sizzles
Notenoughkindling/paperorno
kindling/paper
Usedrykindling,morepaper.Arrangekindling&woodfor
airmovement.
Damperclosed/notfullyopen Opendamper.
Notenoughairforretoignite Checkforrestrictedcap/shroud.
Openairkit(ifinstalled).
Checkforueblockage.
Pre-warmuebeforestartingre(refertostartingre
section).
Checkforadequateventheight(refertochimney
assemblysection).
Openwindowbelowthereplacetowardsthewind.
Woodconditionistoowet,toolarge Usedry,seasonedwood(refertowoodfuelsection).
Bedofcoalsnotestablishedbefore
addingwood
Startwithpaper&kindlingtoestablishbedofcoals(refer
tostartingresection).
Flueblockagesuchasbirds’nests
orleavesinterminationcap
Havechimneyinspectedforcreosoteandcleanedbya
certiedchimneysweep.
Downdraftornegativepressure
Competitionwithexhaustdevices
Donotuseexhaustfansduringstart-up(refertonegative
pressuresection).
Openwindowbelowthereplacetowardsthewind.
Fireburnstoofast Extremelydryorsoftwood Mixinhardwood.
Mixinlessseasonedwoodafterreisestablished(refer
towoodfuelsection).
Noglassdoors Addglassdoorstoslowdownairow.
Overdrafting Checkforcorrectventheight;toomuchverticalheight
createsoverdrafting.
Checklocationofventtermination(refertochimney
assemblysection).
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13

18
A. FAQs
Ifsmokespillageoccursfromareplaceopeningwhen
thedoorisopen,thereiseitheraleakageintheue,a
blockageintheue,orsomeconditionisaffectingdraft
Understandinganddifferentiatingtheconditionswhich
cancauseeachofthesekindsofspillageproblemsis
essentialtotheirsolution.
• FlueLeakage
 Check for improperly connected flue joints or a
damaged ue joint in the chimney system. Such
leakagewouldreducedraft(airwouldbedrawnin
throughtheleaksratherthanthroughthereplace).
The result might be difficult start-up and smoky
resthatmightspillifotheradversedraftconditions
accompanythisproblem.
• FlueBlockage
 Thedampershouldbeopen.
 Check for objects that may have fallen down the
chimney.
Besureyouhaveairavailableforcombustionandthat
yourrewoodisdryandwellseasoned.Buildyourres
properlyandaccordingtotheinstructionsgiveninop-
eratinginstructions,“StartingaFire”.Besureyourue
systemisinstalledcorrectlyandthatitistheproperdi-
ameterandheight.Checkforthefollowing:
• Allchimneysectionsareproperlyinstalled.
• Thechimneyiscleanandfreeofcreosoteorsoot
buildup.
• Makesureoverhangingtreesandbranchesarecut
backwithintenfeetofthetopofthechimneyandthe
chimneyisfreeofdebrisfromanimals.
• Ensure the chimney cap is clean and free of any
buildupofsootorcreosoteifcapisequippedwitha
sparkarrestorscreen.
• Thewoodbeingusedindryandwellseasoned.
Ifyoustillsuspectyouhavealowdraftproblemitmay
be necessary to increase the volume of air in your
uesystem.Sincethediameterofyouruesystemis
matchedwiththesizeoftheuecollarandshouldnot
bechanged,thentheheightofthesystemmustbein-
creased.Addchimneysectionsoneatatimeuntilthe
draftimproves.
Insomecases,regardlessofwhatyoudo,itcanstillbe
difculttoestablishtheproperuedraft.Thisisespe-
ciallyevidentwhenusinganexteriorfactory-builtchim-
neyorexteriormasonrychimney.Tryholdingaburning
rolledupnewspaperasclosetotheueoutletaspos-
sibleforafewminutes,thenlightthepaperunderthe
kindling.Theheatgeneratedfromtheburningrolledup
newspapershouldhelpgetthedraftestablished.
Stillotherfactorscanaffecthowwellyouruesystem
performs.Neighboringstructures,highwinds,talltrees,
evenhillsidescanaffectaircurrentsaroundthechim-
ney.Welldesignedchimneycapsareavailablethatcan
help. Your replace dealer is the local expert in your
area. He can usually make suggestions or discover
problems that can be easily corrected allowing your
replacetooperatecorrectlyasithasbeendesigned,
providingsafeandeconomicalheatforyourhome.
Flue draft is measured as negative pressure in the
chimney.Theamountofnegativepressuredetermines
howstrongthedraftis.Thedraftisimportantbecause
itdrawsthecombustionairintothereplaceandpulls
thesmokeoutofthechimney.
Therearethreebasiccriteriaessentialinestablishing
andmaintaininguedraft:
• availabilityofcombustionair
• heatgeneratedfromthere
• diameterandheightoftheuesystem
Thesethreefactorsworktogetherasasystemtocreate
theuedraft.Increasingordecreasinganyoneofthem
willaffecttheothertwoandthuschangetheamountof
draftintheentiresystem.
Ifthereishardtostartandsmokespillsoutofthere-
place,oryounditdifculttoestablishandmaintaina
moderatelyhighburnrate,thentheuedraftistoolow
andcorrectivemeasuresmustbetaken.
Hearth&HomeTechnologiesassumesnoresponsibil-
ityfortheimproperperformanceofthereplacesys-
temcausedbyinadequatedraftduetoenvironmental
conditions, down drafts, tight sealing construction of
thestructure,ormechanicalexhaustingdeviceswhich
willcreateanegativeairpressurewithinthestructure
wherethereplaceislocated.
Contact your dealer for additional infor-
mation regarding operation and trouble-
shooting. Visit www.heatnglo.com to nd a
dealer.
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13

19
Another appliance in
home also exhausting
air (furnace, fan,
dryer, etc.)?
Air register from
furnace near
fireplace?
Doors opening
and closing?
Window closed
for start-up?
Outside air
closed?
Overhead fan
operating?
Overhanging
tree?
Bird's nest
or leaves in
termination
cap?
Structural
changes in
chimney area?
Creosote buildup
in flue?
S
t
r
o
n
g
w
i
n
d
s
a
r
o
u
n
d
c
h
i
m
n
e
y
t
e
r
m
i
n
a
t
i
o
n
?
Unsealed
can lights?
Combustion
air control
Figure 5.1 Factory-built Fireplaces: Troubleshooting
Heat&Glo•HST-42DOwnerManual•4012-065•RevD•11/13/13

20
6 Reference Materials
A. Service Parts
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev D • 11/13/13
Service Parts HST-42D
Beginning Manufacturing Date: Aug 2001
Ending Manufacturing Date: Active
IMPORTANT: THIS IS DATED INFORMATION. Parts must be ordered from a dealer or
distributor.Hearth and Home Technologies does not sell directly to consumers.Provide
modelnumberandserialnumberwhenrequestingservicepartsfromyourdealerordistributor.
Stocked
at Depot
ITEM DESCRIPTION COMMENTS PART NUMBER
1 DamperBladeAssembly 22890
DamperRod 28900
2 StarterSectionAssembly 22069B Y
3 TopStandoffs Qty4req 11864i
4 SmokeShield Qty2req 20399
5 BackRefractory Qty2req 27068
6 SideRefractory Qty4req 27067
7 FirescreenAssembly Qty4req 12267 Y
FirescreenHandle 1ea. 10002
8 DoorSupport Qty2req 4012-035
9 Ashlip Qty2req 20401
10 HearthRefractory 13321B
11 DamperControl 20549
12 Grate GR12 Y
13 DrywallFlange Qty2req 20429
Additionalservicepartsonfollowingpage. 11/13
36 in. See-thru
Woodburning Fireplace
1
2
10
9
811
7
6
5
3
12
13
4
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