Vermont Castings Montpelier Medium Insert User manual

1Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
For Use in North America
4403
Montpelier cover
1/08
SAFETY NOTICE: IF THIS APPLIANCE IS NOT
PROPERLY INSTALLED, OPERATED AND
MAINTAINED, A HOUSE FIRE MAY RESULT.
TO REDUCE THE RISK OF FIRE, FOLLOW THE
INSTALLATION INSTRUCTIONS. FAILURE TO
FOLLOW INSTRUCTIONS MAY RESULT IN PROPERTY
DAMAGE, BODILY INJURY OR EVEN DEATH.
CONTACT LOCAL BUILDING OFFICIALS ABOUT
RESTRICTIONS AND INSTALLATION INSPECTION
REQUIREMENTS IN YOUR AREA.
Owner's Manual
Installation and Appliance Setup - Care and Operation
INSTALLER: Leave this manual with party responsible for use and operation.
OWNER: Retain this manual for future reference.
Call your dealer for questions on Installation, Operation, or Service.
Montpelier Medium Insert
NOTICE: SAVE THESE INSTRUCTIONS
Please read this entire manual before
installation and use of this wood-burning
room heater.
Failure to follow these instructions could
result in property damage, bodily injury
or even death.
• Donotstoreorusegasolineorotherammablevapors
andliquidsinthevicinityofthisoranyotherappliance.
• Donotoverre-Ifanyexternalpartstartstoglow,you
areoverring.Closeaircontrols.Overringwillvoid
yourwarranty.
• Complywithallminimumclearancestocombustibles
asspecied.Failuretocomplymaycauseahousere.
WARNING
!
Testedandapprovedforusewithdry,seasonedcordwood
only.DoNotBurnWetorGreenWood.Burninganyother
typeoffuelwillvoidyourwarranty.
CAUTION
!
TheFrenchlanguageversionofthismanualisavailableonline:www.vermontcastings.com
Laversionfrançaisedecemanuelestdisponibleenligne:www.vermontcastings.com
Installationandserviceofthisapplianceshouldbeperformedby
qualiedpersonnel.Hearth&HomeTechnologiesrecommends
HHTFactoryTrainedorNFIcertiedprofessionals.

2Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
Introduction
Save These Instructions for Future Reference
The Montpelier Medium Insert is designed, tested
and listed for burning wood. Do not burn other fuels.
The Montpelier Medium Insert is not listed for mobile
home installations.
Failure to follow these instructions may result in
property damage, bodily injury or even death.
ThankyouforpurchasingaVermontCastingsMontpelierMediumInsert,anefcientwoodstovecarefullyengineeredto
bringyouthelatestinwoodcombustionprinciplesandmodernfoundrytechnology.
Thisstovetransformsatraditionalmasonryreplaceintoapowerfulheater.Youcancountonyearsofcomfortableheating
andpleasurablere-viewingifyouoperateandmaintainitaccordingtothedirectionsinthisOwner’sGuide.
ThisInserthasbeentestedandlistedbyOMNI-TestLaboratoriesofPortland,OregontoUL1482-1996(R2006)fortheUnited
StatesandULCS628-93forCanada.ThisInsertislistedto,andincompliancewith,thestandardssetforthbytheFederal
EnvironmentalProtectionAgency,40CFRPart60.532(b),asstatedonthepermanentlabelattachedtothestove.
ThismanualdescribestheinstallationandoperationofthisInsert.ThisheatermeetstheU.S.EnvironmentalProtection
Agency’semissionlimitsforwoodheaterssoldafterMay15,2015.Underspecictestconditionsthisheaterhasbeenshown
todeliverheatataraterangingfrom10,100to27,550BTU/hr.
Formorecompletedetailsonstoveperformanceandspecications,pleaserefertoPage3.
TheMontpelierMediumInsertisdesigned,testedandlistedforburningwood.Donotburnotherfuels.
InstallationorserviceoftheMontpelierMediumInsertshouldbeperformedonlybyaqualiedinstaller,preferablyNFIor
WETT(Canada)certied.
PleasereadentiremanualbeforeyouinstallanduseyournewInsert.
Failuretofollowtheseinstructionsmayresultinpropertydamage,bodilyinjuryorevendeath.
WARNING
!
This stove has not been tested with an unvented gas
log set. To reduce the risk of re or injury, do not install
an unvented gas log set into this replace.
Specications......................................................... 3
Dimensions............................................................. 4
Installation.............................................................. 5
SmokeAlarm/SafetyTip....................................... 11
Operation.............................................................. 12
Maintenance......................................................... 15
OptionalAccessories............................................ 18
ServicePartsList.................................................. 19
Warranty............................................................... 21
Table of Contents
= Contains updated information

SAFETY NOTICE: IF THIS APPLIANCE IS NOT PROPERLY INSTALLED, OPERATED AND MAINTAINED, A HOUSE
FIRE MAY RESULT.
TO REDUCE THE RISK OF FIRE, FOLLOW THE INSTALLATION INSTRUCTIONS. FAILURE TO FOLLOW
INSTRUCTIONS MAY RESULT IN PROPERTY DAMAGE, BODILY INJURY OR EVEN DEATH. CONTACT LOCAL
BUILDING OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION INSPECTION REQUIREMENTS IN YOUR AREA.
!WARNING
This product and the fuels used to operate this product
(wood),andtheproductsofcombustionofsuchfuels,can
expose you to chemicals including carbon black, which
isknowntotheStateofCaliforniatocausecancer,and
carbonmonoxide,whichisknowtotheStateofCalifornia
to cause birth defects or other reproductive harm. For
moreinformationgoto:www.P65Warnings.ca.gov
California safety information 

3Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
Specications
*Weighted average LHV (Low Heating Value) efciency
using Douglas Fir dimensional lumber and data collected
during EPA emission test.
**Weighted average HHV (High Heating Value) efciency
using Douglas Fir dimensional lumber and data collected
during EPA emission test.
***A range of BTU outputs based on EPA Default Efciency
and the burn rates from the low and high EPA tests, using
Douglas Fir dimensional lumber.
****A peak BTU out of the appliance calculated using the
maximum rst hour burn rate from the High EPA Test and
the BTU content of cord wood (8600) times the efciency.
Thiswoodheaterneedsperiodicinspectionandrepairfor
properoperation.Itisagainstfederalregulationstooperate
this wood heater in a manner inconsistent with operating
instructionsinthismanual.
MODEL: MontpelierMediumInsert
LABORATORY: OMNITestLaboratories,Inc
REPORT NO. 259-S-13-2
TYPE: SolidFuelRoomHeater/Wood
BurningType
STANDARD(s): UL1482-1996,ULC-S628-93
ELECTRICAL
RATING: 115VAC,60Hz
Area Heated................................1,000-2,300Squarefeet
Loading....................................................................... Front
Chimney Connector:.......................................6"(150mm)
Flue Exit Position.........................................................Top
Primary Air...................................................... ManuallySet
Glass Panels........................... High-TemperatureCeramic
Weight......................................................335lbs.(152kg.)
Blower Rating................................. 150cfm.(115V,60Hz)
Power Cord Lenght.....................6FootUseableInstalled
EPA Certication Number: 696
EPA Certied Emissions: 2.9g/hr
*LHV Tested Efciency: 75.0%
**HHV tested Efciency: 68.5%
***EPA BTU Output: 10,000-27,600
****Peak BTU/Hour Output: 57,900
Other Important Information
Vent Size: 6Inch(152mm)
Firebox Size: 2.6cu.ft.
Max. Wood Length: 22"Maximum
Ideal Wood Length: 18"
Fuel SeasonedCordwood
(20%moisture)

4Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
Figure 1 -MontpelierMediumInsertdimensions.
Dimensions
17-1/4” (434 mm)
21-1/2”
(548 mm)
30-1/2” (774 mm)
28-3/4” (730 mm)
22-1/4”
(565 mm)
22-1/4” (564 mm)
11-1/2”
(292 mm)
4403
Montpelier dims
1/08
26-3/4” (680 mm) 14-1/4” (362 mm)
21-9/16” (547 mm)
21-9/16” (547 mm)
With3"
ProjectionKit
Without3"
ProjectionKit

5Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
SAFETY NOTICE: IF YOUR MONTPELIER MEDIUM
INSERT IS NOT PROPERLY INSTALLED, A HOUSE FIRE
MAY RESULT. TO REDUCE THE RISK OF FIRE, FOLLOW
THE INSTALLATION INSTRUCTIONS. CONTACT LOCAL
BUILDING OR FIRE OFFICIALS ABOUT RESTRICTIONS
AND INSTALLATION INSPECTION REQUIREMENTS IN
YOUR AREA.
Requirements for Existing Fireplaces
TheMontpelierMediumInsertislistedforinstallationwithin
aproperlybuiltmasonryreplace.
Thereplaceandchimneymustbecleanandstructurally
sound. Have them inspected by a qualied professional
chimney sweep, a mason, or your Vermont Castings’
AuthorizedDealerbefore the MontpelierMediumInsertis
installed.Any deterioration (cracks, loose mortar or loose
bricks)mustberepaired.
Codesmaypermitremovalofthedamperinordertomake
a positive vent connection between the rebox and the
chimney.However,thereplaceshouldnotbemodiedinany
waywithoutrstcheckingwithyourlocalbuildinginspectoror
remarshal.Provisionshouldbemadetorestorethereplace
toitsoriginalconditioniftheinsertisremoved.Donotremove
bricksormortarthatmayjeopardizethecomplianceofthe
replacewithlocalbuildingcodes.
The Montpelier Medium Insert is not listed for installation
in factory-built replaces.
Requirements for Existing Chimneys
Chimney requirements differ for the U.S. and Canada.
Specicationsforeacharelistedbelow.Connecttheinsert
to the chimney in accordance with local codes and the
requirementsofthelistingagencyasspeciedinthismanual.
Chimney Height / U.S. and Canada
Chimneyheightshouldbenolessthan15’(4.5m)abovethe
hearthandnomorethan35’(10.5m).
Thechimneyshouldextendatleast3’(914mm)abovethe
highestpointwhereitpassesthrougharoof,andatleast2’
(610mm)higherthananyportionofabuildingwithin10’(3
m).(Figure2)
DO NOT CONNECT YOUR MONTPELIER MEDIUM INSERT
TO A CHIMNEY FLUE SERVING ANOTHER APPLIANCE.
Installation
U.S.
In the U.S. (ANSI/NFPA 211, 1988), when installed in a
masonry replace:
• Aconnectormustextendfromtheuecollartotheue
liner.
• Ifastainlesssteellinerisnotused,theconnectormust
extend at least four (4) feet from the ue collar of the
insert.*
• Thecrosssectionalareaoftheuemustbelessthanor
equaltothreetimestheareaoftheuecollar.Iflarger,
thechimneymustbere-lined.
• Meansmustbeprovidedtopreventroomairpassingto
thechimneycavity.
• Provisionmustbemadeforremovalofthe insert to
cleanthechimneyue.
General Considerations / U.S.
• WhilenotrequiredinmostjurisdictionsintheU.S.,Vermont
Castingsstronglyrecommendsthatafullstainlesssteel
chimneylinerbeinstalledfortheinserttothechimneytop
toincreaseoverallperformanceandtoeaseandreduce
yearlymaintenance.
• Amasonrychimneymustbewell-constructedandmust
meet minimum code requirements.  The chimney ue
shouldhaveacode-approvedlinermadeofmasonryor
pre-castrefractorytiles,straightorexiblestainlesssteel
pipe,orapoured-in-placeliner.Anunlinedchimneymust
berelinedprofessionally.
• Thechimneymusthaveanominaluesizeof6"(152mm)
diameteror28squareinches(181cm2)butnogreaterthan
3timeslargeror85squareinches(548cm2).Achimney
largerthanthismustbere-lined.
2' Min.
2' Min.
3'
Min.
0 To 10'
3'
Min.
0 To 10'
AC617
RLTSKC8
2/11/98
ReferencePoint
Figure 2-The2’-3’-10’ruleforchimneys.
*ThisrequirementisinadditiontothosespeciedinANSI/NFPA211.

6Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
• Apermanentmetalwarninglabelmustbeafxedtothe
backofthereplacestatingthereplacemayhavebeen
alteredtoaccommodatetheinsert,andmaybeunsafeto
useasaconventionalreplace.(AFireplaceModication
TagisincludedinthehardwarebaginsidetheMontpelier
MediumInsert.)
Minimum Fireplace Dimensions
The Montpelier Medium Insert will t most replaces. To
conrmthatitwilltyours,measurethelinteldepth,plusthe
height,width,anddepthofyourreplaceandhearth.Compare
themtothemeasurementsinthe accompanyingchart.If
youchoosetoinstallanewhearthoveranexistingreplace
hearth,besuretotakeitsthicknessintoconsiderationwhen
measuringbothfrontandbackheightofthereplaceand
clearancestoanyexistingtrimsandmantels.
The unit can be installed virtually ush with the replace
openingoritcanextend3"(76mm)ontothehearthusingthe
optional3"HearthExtensionKit.Figure3givesminimumand
maximumdimensionsforreplaceswhichwillaccommodate
theMontpelierMediumInsertintheushmountconguration
andusingtheoptionalextensionkit.
NOTE: TheclearancebetweentheMontpelierMediumInsert
andthemantel,toptrimandsidetrimcannotbereducedby
installingshields.
Anotherrequirementtoconsideristheclearanceformovable
itemssuchastables,bookcases,rugs,furnishings,andyour
woodbox.Allcombustiblematerialsofthistypeshouldbe
aminimumof48"(1220mm)fromthefrontsurfaceofthe
MontpelierMediumInsert.Besurethatfamilymembersare
awareofthisrequirementaswell,sotheytoowillkeepobjects
asafedistancefromtheMontpelierMediumInsert.
Beawarethatachimneyoriginallydesignedforreplaceuse
mayperformdifferentlywhenusedtoventanair-controlled
appliancesuchasyourMontpelierMediumInsert-evenif
theueislessthan3timeslargerthantheuecollar.For
example, a chimney on an outside wall may not heat up
enoughtosustainanadequatedraft.Suchauecanoften
beimprovedifitisrelinedtoreduceitssizeand/orinsulated
tokeepitwarmer.
• A positive ue connection must be made between the
Insert and the rst masonry tile or prefabricated metal
chimneysection.A positive ueconnection consists of
aplatethatsealsorreplacesthereplacedamperand
asectionofchimneyconnectorthatpassesthroughthe
plateintothechimney.
• Thechimneyconnectormustbeaminimumequivalentto
a6"(152mm)diameteropeningandmustbe24gaugeor
heavierstainlesssteel.Theconnectormustextendfour
(4)feetmeasuredfromthecollaroftheinsert.
ChimneyConnectionsystemsareavailablefromavariety
of manufacturers. Your Vermont Castings dealer can
recommendasystemthatwillbestmeettherequirements
ofyourparticularinstallation.
Sealing Requirements / U.S.
• Thechimneymustbesealedofffromroomair,eitherby
a plate at the damper level or by sealing the replace
opening.
• Unusedopeningstotheuemustbesealedwithmasonry
tothethicknessofthechimneywall.Openingssealed
withpieplatesorwallpaperareahazard.Intheeventof
achimneyre,amesandsmokemaybeforcedfromthe
openings.
Canada
In Canada (CAN/CSA-B365-M91, Section 5), if installed
in a masonry replace:
• Thisreplaceinsertmustbeinstalledwithacontinuous
chimneylinerof6"(152mm)diameterextendingfromthe
replaceinserttothetopofthechimney.Thechimney
linermustconformtotheClass3requirementsofCAN/
ULC-S635, Standard for Lining Systems for Existing
Masonry or Factory-Built Chimneys and Vents,orCAN/
ULC-S640,Standard for Lining Systems for New Masonry
Chimneys.
• Theopeningofthereplacearoundtheinsertmustbe
sealedtopreventroomairpassingtothereplacecavity.
• Existingair-circulationchambersinareplacewithasteel
linermaynotbeblocked.
• Provisionmustbemadeforremovaloftheinserttoclean
thechimneyue.
• Theexistingreplacedamper(ifany)shouldbelocked
intheopenposition.

7Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
Fireplace Minimums
Flush Mount
3" Extended
Mount
AWidthatFace 27"(686mm)
BWidthatDimension'C' 22-1/2"(572mm) 22-1/2"(572mm)
CDepth117-1/2"(445mm) 14-1/2"(368mm)
DHeightatFace 21-1/2"(546mm) 21-1/2"(546mm)
EHeightatDimension'C' 21-1/2"(546mm) 21-1/2"(546mm)
Fireplace Maximums
HLintelDepth 8-1/2"(216mm)
IWidth241-1/2"(1054mm)
JHeight228-1/2"(724mm)
1. Theminimumdepthmustbemaintainedfromtheoorofthereplace
toaheightof21-1/2"(540mm)
2. ThoughtheMontpelierMediumInsert willtintolargerreplaces,
the decorative optional Vermont Castings Surround Panels will
notcompletelycoverthereplaceopeningifthesedimensionsare
exceeded.Custommadetrimpiecesmaybeused.
A,I
BC
D,J
E
D,J
H
CE
FP1084
winterwarm
fireplace minimum dimensions
3/01
Figure 3-UsethesemeasurementstoconrmthattheMontpelier
MediumInsertwilltintoyourmasonryreplace.
Clearance Requirements
Afterconrmingthatyourreplaceistherightsize,check
theclearancetocombustibles.Firstmarkwithtapetheexact
centerofyourreplaceopeningonthehearth.Measurethe
sideclearancefromthispoint.Measurethetoptrimand/or
mantelclearancesfromthenishedhearthsurface.Measure
thefrontclearance(tofurnishings,etc.)fromthereplace
face.(Figure4)
Hearth Requirements
Insomereplaces,thehearthinfrontofthereplaceopening
isbrick,stone,slate,orsomeothernon-combustiblematerial
thatisindirectcontactwithconcretepouredoverearth.These
aretheonlyhearthsthatareconsiderednoncombustible.In
otherreplaces,thebrickorconcretehearthinfrontofthe
replaceopening issupported by heavy wooden framing.
Because neither brick nor concrete has good insulating
properties, heat radiated by the re will pass downward
throughthe hearthto the woodenframing.  Suchhearths
areconsideredcombustible.
Unless the replace and hearth are constructed over a
completely non-combustible surface (such as unpainted
concreteoverdirt),athermaloorprotectormustbeused
infrontofandtothesidesofthedoorasprotectionagainst
spilledcoalsandembersandheatradiatedfromthefront
oftheinsert.Floorprotectorsmustextendatleast8"(203
mm)fromthesideoftheinsert,makingtheprotector44-3/4"
(1137mm)wide.
Inaddition,theoorprotectormustextendfromthefrontdoor
openingaminimumof16"(406mm)intheUnitedStatesand
18"(457mm)inCanada.(Figure5)
The approved construction of a oor protector calls for a
minimumof24gaugegalvanizedsheetmetalorequivalent,
andtheequivalentof1.25"(32mm)ofamaterialwithk-value
of0.84orless.
Custom-madeoorprotectorsmaybeusediftheyofferthe
sameprotection.Millboardhasastandardkvalueof0.84
andthus1-1/4"(32mm)ofthismaterialisadequatethermal
protection.Custom-builtoorprotectorsmusthaveakvalue
equalto,orlessthan0.84,meaningthatheatwilltransfer
atthesamerateormoreslowlythanthetestedstandard.
How to Determine if Alternate Floor Protection Materials
are Acceptable
Alloorprotectionmustbenoncombustible(i.e.metals,brick,
stone,mineralberboards,etc.).Anyorganicmaterials(i.e.
plastics,woodpaperproducts,etc.)arecombustibleandmust
notbeused.Theoorprotectionspecied
X
FP1085
WinterWarm
clearances
3/01
C
A
B
Measuresidetrim
clearancefromhere
Figure 4-Observetheseclearancestocombustibletrim.
Fireplace Clearances
Flush Mount 3" Extended Mount
AMantel 47-1/2"(1207mm) 44-1/2"(1130mm)
BTopTrim(1-1/2") 47-1/2"(1207mm) 36-1/2"(927mm)
CSideTrim* 21"(533mm) 21"(533mm)
*Wheresidetrimextendsmorethan1-1/2 " (38mm)fromthereplace
facing,thesideclearancemustbenolessthan26-1/2 " (673mm);thisis
alsotherequiredsidewallclearance.
Measurethesideclearance(C)fromtheexactcenterofyourreplace
openingonthehearth(X).Measurethetoptrim(B)and/ormantelclear-
ances(A)fromthenishedhearthsurface.Measurethefrontclearance
(tofurnishings,etc.)fromthereplaceface.

8Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
United States Canada
A* 16"(406mm) 18"(460mm)
B8"(203mm) 8"(203mm)
C44-3/4"(1137mm) 44-3/4"(1137mm)
Typically,thermalprotectionwiththeabovedimensionswillberequired.
Theequivalentof1.25"(32mm)ofamaterialwithak-value0.84(ora
total R-value of 1.49)isnecessary.
Iftheinsertiselevated8-1/2"(216mm)ormoreaboveacombustible
hearth, thermal protection is not needed. However, spark and ember
protectionisstillnecessary.
*Iftheinsertiselevated3"(76 mm)or more,withtheoptionalhearth
extension,thisdimensionmaybereducedto16"(406mm)(USonly)
beyondwhichnothermalprotectionisnecessary.
FP1095
hearth protection
2/08 djt
A
B
C
B
Figure 5-Unlessyourreplaceandhearthareconstructedover
adirtoor(orunpaintedconcreteoverdirt),youmustuseaoor
protectorthatsatisestheaboverequirements.
EXAMPLE: The specied oor protector should be 11⁄4"
thickmaterialwithk-factorof0.84.Theproposedalternate
is4"brickwithanr-factorof0.2over1⁄4"mineralboardwith
ak-factorof0.29
Stepa:UseformulaabovetoconvertspecicationtoR-value:
Stepb:CalculateRofproposedsystem.
 4"brickofr=0.2,therefore:
 R brick=0.2x4=0.8
 1/8"mineralboardofk=0.29,therefore
 R mineralboard=x0.25=0.431
 R total=Rbrick+Rmineralboard=0.8+0.431=1.66
Stepc:CompareproposedsystemRtotalof1.66tospecied
Rof1.49.SinceproposedsystemRtotalisgreaterthan
required,thesystemisacceptable.
Denitions
R=xT=x1.25=1.49
1
k
1
0.84
1
0.29
r==
(ft2)(hr)(°F)
(Btu)(in)
1
k
(Btu)(ft)
(ft2)(hr)(°F)
K  = 
k==Kx12
(Btu)(in)
(ft2)(hr)(°F)
R=(ft2)(hr)(°F)
Btu
includessomeformofthermaldesignationsuchasR-value
(thermalresistance)ork-factor(thermalconductivity).
Procedure:
1. ConvertspecicationstoR-value:
i.R-valuegiven-noconversionneeded.
ii.k-factorisgivenwitharequiredthickness(T)ininches:
iii.K-factorisgivenwitharequiredthickness(T)ininches:
iv.r-factorisgivenwitharequiredthickness(T)ininches:
R=rxT
2. Determine the R-value of the proposed alternate oor
protector:
i.  Use the formula in Step 1 to convert values not
expressedasR.
ii.  For multiple layers, add R-values of each layer to
determineoverallR-value.
3. IftheoverallR-valueofthesystemisgreaterthanthe
R-valueofthespeciedoorprotector,thealternateis
acceptable.
R=xT
1
Kx12
R=xT
1
k
Optional Surround Packages
Custom-made surround panels may be made from any
noncombustiblematerial.
VermontCastingsoffersbothsteelandcastironSurround
panelkits,eachintwosizes.
Georgian Cast Surround Enclosure Area
30DVSGTKCB,
30DVSGTKB.................... 30-1/4"x41(768x1041mm)
Mead Cast Surround:
 MEAD3CB........... 28-1/4"x41-11/16"(718x1059mm)
Caprice Cast Adjustable Prole Surround:
 CAPCB................................. 25"x35"(635x889mm)
Steel Surround:
 LHE30SSB......................27"x38-1/4"(686X972mm)
 LHE30SLB..................... 28-1/4"x41"(718x1041mm)

9Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
Installing the Montpelier Medium Insert
1. Remove or Disable the Fireplace Damper. If codes
allow,removethedamper.Manydamperscanberemoved
simplybyremovingacotterpinand/orasetscrew.
 Ifitisnotpermissibleorpossibletoremovethedamper,
securethedamperinthefullyopenposition.
~ NOTE: CANADIAN INSTALLATIONS ~
In accordance with CAN/CSA B365-M91, you must
permanently secure the Fireplace Modication Tag to
the rear of the replace cavity if you have modied the
replace in any way to accommodate installation of a
replace insert.Thistagisinthehardwarebagincluded
withyourInsert.
2. Install the Floor Protector.Makesuretheoorprotector
satises the requirements discussed on Page 6. The
nishedheightoftheoorprotectororraisedhearthneeds
tobeconsideredbeforeinstallingtheventingsystem.
3. Flue collar orientation:Theuecollarmaybeoriented
intheverticalpositionorrotated180degreesonthetop
ofthestoveresultingina26degreebackwardangle.If
possible,determinebeforehandwhichorientationwillwork
bestforyourapplication.
In most applications, cleaning of the chimney system will
beeasiestfromthetop(chimneycap)down.Ifthisisthe
plannedmethodforyourapplication,thecenterironpull
downhandleontheuecollarservesasprotectiontokeep
preventachimneybrushfromdamagingthebafeinside
thestove.Ifcleaningcanonlytakeplacefrominsidethe
home,thecenterbarmaybecutoutoftheuecollarusing
ahacksaworreciprocatingmetalcuttingsaw.
4. Install the venting system:Again,dependingonyour
applicationitmaybeeasiesttoinstalltheconnectoror
stainless steel ue liner in the chimney rst.  Refer to
Figure6forthecomponentsoftheventingsystem.
•Carefullyremovetheberbafebyrstremovingthe
frontairtube.Ifnecessary,removingtheremainingair
tubeswillalloweasieraccess.
• Removetheironuecollarfromthestoveandfasten
eithertheadapterpipeoruelinertoitbydrillingthree
holesusingtheholesintheironcollarasaguide.
• Securetheexiblepipetothepipeadaptorusingthe
samemethod.
• Installthe connector pipeorliner sothatthe height
measuredfromthenishedhearthsurfacetothecenter
baroftheuecollaris19"(483mm).(Figure7)This
willallowaneasyconnectiononcethestoveisrolled
intoplace.
Figure 6 -Componentsoftheventingsystem.
ST1002
Vent system components
3/08
FlexibleFlueLiner
FlexLinerAdapter
(ifrequired)
Adjustable(26"orvertical)
FlueCollarw/Integrated
Draw-DownBar
TopoftheInsert
AroundFlueOpening
Washers1/4Diameter
1/4-20HexNuts
Figure 7-Measuredheightfromthenishedhearthsurfacetothe
centerbaroftheuecollar.
19’
(483 mm)
Ref. 26”
ST1003
finished height
3/08
TwistonWood
Handle
5. Route the blower power cord.Runthepowercordout
theleftorrightsideoftheinsert.Removethecoverplate
andinserttheprovidedgrommetintotheslot.Reattach
thecoverplate.
NOTE: DO NOT RUN THE POWER CORD UNDER OR IN
FRONT OF THE UNIT.
6. Install the Optional Surround Kit.Followtheinstructions
providedwiththekit.
7. Roll the Firebox into Position. At least two people
willbeneededtomovetherebox.Liftthefrontofthe
stoveslightlytoputweightontherearwheelstoease
installation.Positionthereboxsotheuecollarlinesup
withtheconnector.Usethelevelingscrewsatthefront
oftheInserttoadjustthelevel.Routethepowercordto
thesidenearestthepowersupplyandtestthefans.

10 Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
Smoke and CO Detectors
The use of smoke and carbon monoxide (CO) detectors
throughout the home is strongly advised, even if not
required by building codes or insurance regulations.
It is a good idea to install a smoke detector in the living
areas and each bedroom. Follow the smoke/CO detector
manufacture's placement and installation instructions and
maintainregularly.
You may not, however, wish to install a detector in the
immediate vicinity of the Montpelier insert. Depending on
thesensitivityoftheunit,thealarmcanbesetoffwhileyou
aretendingthereoremptyingtheashes.Ifyouinstalla
detectorinthesameroom,locate it as far awayfromthe
insertaspossible.
Safety Tips
Convenientlylocatea"ClassA"reextinguishertocontend
with small res. Be sure the re extinguisher works and
isclearlyvisible.Alloccupantsofthehouseshouldknow
whereitis,andhowitoperates.Haveheavystovegloves
availableneartheinsert.Havespecialsafetyaccessories
(e.g.,ChildGuardScreen)availableforuseifsmallchildren
willbeinthehome.
Intheeventofastovepipeorchimneyre….
• Evacuatethehouseimmediately
• Notifytheredepartment
• If the re isn't too threatening, closing down the insert
tight,(damper,primaryair,alldoors)willhelptosmother
there.
• Inspect your insert, stove pipe and chimney for any
damage caused by the re and correct  any damage
beforeusingyourinsertagain.
8. Connect the Flue Collar. : Frominsidethestove,reach
upandpulltheuecollarintoplacebyliningupthetwo
1⁄4"studsinthestovetop.Careshouldbetakentonot
disturbthegasketwhichsealsthecollartothetop.Tighten
thetwo1⁄4"nuts.
• Replacethethreerearstainlesssteelairtubesby
slidingthemrsttotherightandthenintothemating
holes on the left. Secure these in place with the
stainlesssteelcotterpins.
• Beforeinstallingthefrontairtube,replacetheber
bafeboardandensureitslidesallthewaytothe
back.Thereshouldbeatighttbetweentheboard
andtheironsidesofthestove.
• Replacethefrontairtubeandsecureitinplacewith
thecotterpin.
9. Connect the Blower power cord to the power supply.
DO NOT ROUTE THE POWER CORD UNDER OR IN
FRONT OF THE UNIT.
10. Installthesuppliedwoodenhandlebytwistingclockwise
ontotheprimaryaircontrol.(Figure7)
ThiscompletesinstallationofyourMontpelierMediumInsert.

11 Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
Operation
ST997
monty controls
1/08
AirControlLever
FanSpeedControl(Behindlouvre)
Figure 8-MontpelierMediumInsertcontrols.
ST1000
Primary air settings
1/08
AirControlLever
Open - Control Lever to the Left
Closed - Control Lever to the Right
Figure 9-Theaircontrollevercontrolstheamountofairentering
therebox.
Your Insert’s Controls and What They Do
AllMontpelierMediumInsertcontrolsareconvenientlylocated
onthefront.(Figure8)
Twocontrolsregulatethe performance of yourMontpelier
MediumInsert:
The primary air controlsuppliesoxygenforthere.
Thevariable-speedfan control,orrheostat,regulatesthe
warmairowintotheroom.
The Fans
Theconvectionfandeliversasteadystreamofwarmairinto
theroom.Usethefanspeedcontroltoregulatetheowofair
intotheroom.Athermalswitchwillautomaticallyde-activate
thefanwhenthestovecoolsdown.Whenstartingarein
acoldstove,thisswitchwilltypicallyenergizethefanwithin
about60minutesdependingonwoodspeciesandfuelload.
The fan speed should be set at “low” (fully closed) when
operating at low to medium burn rates and may be set
anywherebetween“low”and“high”whenoperatingathigh
burnrates.(RefertoFigure10forfanaccess)
TheMontpelierMediumInsert’sairsupplyisincreasedwhen
thecontrolleverismovedtotheleft,anddecreasedwhen
movedtothe right. Itmay be setanywherebetweenthe
two extremes, depending on the amount of heat desired.
(Figure9)
To complement the manual setting of the air control, the
Montpelier Medium Insert has an integral convection air
blowerthatensuresanevendeliveryofheatatthemanual
settingyouselect.
Primary Air Control
Asingleaircontrolregulatestheamountofheattherewill
produceandhowlongitwillburn.
The primary air control leverislocatedontheupperleftside
onthefrontoftheinsert.Theleverregulatesairforstarting,
maintaining,andrevivingthere.
Generally,moreairenteringthestovemakesthereburn
hotterandfaster,whilelessairprolongstheburn.
WARNING
!
Thiswoodheaterhasamanufactured-setminimumlow
burnratethatmustnotbealtered.Itisagainstfederal
regulationstoalterthissettingorotherwiseoperatethis
wood heater in a manner inconsistent with operating
instructionsinthismanual.

12 Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
ST996
Montpelier fan access
1/08
SpeedControl
OpenBottomLouvreto
access Fan controls
Figure 10-Fancontrolaccess.
Starting and Maintaining a Wood Fire
Burn solid wood fuel only in the Montpelier Medium
Insert, and burn it directly on the grate. Do not elevate
the fuel. Do not burn coal or other fuels.
Castironisasuperiormaterialforsolidfuelstovesbutit
mustbetreatedwithrespect.Itisextremelystrong,butcan
be broken with a sharp blow from a hammer or from the
thermalshockofrapidandextremetemperaturechanges.
Itisimportanttotemperthecastironplateswithaninitial
seriesof3-4break-inres.Theplatesexpandandcontract
with changes in temperature. Minimize thermal stress by
allowingtheplates to adjustgraduallyduringthe break-in
resbyfollowingSteps1-3onthefollowingpage.
Montpelier Medium Insert Control Settings
Primary Air Air Circulation
Burn Rate
Control
Settings Fan Speed
Control
Position
High FullyLeft High Horizontal
Medium 1"From
FullRight Low Turn Clockwise
Low FullyRight Off
Turn
Counter-
Clockwise
Toomuchdraftmaycauseexcessivetemperaturesinthe
MontpelierMediumInsert,andcouldevendamageinternal
components.Ontheotherhand,toolittledraftcancause
backpufngintotheroomoraverysluggishre.
Howdoyouknowifyourdraftisexcessivelyhighorlow?
Symptomsoftoomuchdraftincludeanuncontrollableburn
orglowing-redcastiron.Asignofinadequatedraftissmoke
leakingintotheroomthroughthestoveorchimneyconnector
joints,lowheat,anddirtyglass.
Insomenewerhomesthatarewell-insulatedandweather-
tight,poordraftmayresultfrominsufcientairinthehouse.
Insuchinstances,anopenwindownearthestoveonthe
windwardsideofthehousewillprovidethefreshairneeded.
Whenrstusingthestove,keeptrackofthesettingsofthe
aircontrols.Youwillquicklyndthataspecicsettingwill
giveyouaxedamountofheat.Itmaytakeaweekortwo
todeterminetheamountofheatandthelengthofburnyou
shouldexpectfromvarioussettings.
Mostinstallationsdonotrequirealargeamountofcombustion
air,especiallyifadequatedraftisavailable.Do not for any
reason attempt to increase the ring of your heater by
altering the air control adjustment range outlined in
these directions.
Use the following primary air control lever and fan speed
controlleversettingsasastartingpointtohelpdetermine
thebestsettingsforyourinstallation.
Burn Only High-Quality Wood
TheMontpelierMediumInsertisdesignedtoburnnatural
woodonly;donotburnfuelsotherthanthatforwhichitwas
designed.
You’ll enjoy the best results when burning wood that has
beenadequatelyair-dried.Avoidburning“green”woodthat
hasnotbeenproperlyseasonedorcordwoodthatismore
thantwoyearsold.
Thebesthardwoodfuelsincludeoak,maple,beech,ash,
andhickorythathasbeensplit,stacked,andair-driedoutside
undercoverforatleastonetotwoyears.
Forareasthatdonothaveasupplyofhardwood,commonly
burnedsoftwoodsincludetamarack,yellowpine,whitepine,
Easternredcedar,r,andredwood.Thesetooshouldbe
properlydried.
YourMontpelierMediumInsertwillacceptwoodupto18"
(460mm).Longerwoodpiecesworkbetterthanshortones.
Wood should be stored under cover to maintain dryness.
Even for short-term storage, however, keep wood a safe
distancefromtheheaterandkeepitoutoftheareasaround
theheaterusedforre-fuelingandashremoval.
Use the Air Control Settings that Work Best for You
Nosingleaircontrolsettingwillteverysituation.Settings
for each installation will differ depending onthe quality of
thefuel,theamountofheatdesired,andhowlongyouwish
theretoburn.
Thecontrolsettingalsodependsonyourparticular“draft,”
ortheforcethatmovesair from the stove upthroughthe
chimney.Draftisaffectedbysuchthingsasthelength,type,
andlocationofthechimney,weather,localgeography,nearby
obstructions,andotherfactors.

13 Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
NOTE:Somechimneysneedtobe“primed,”orwarmedup,
beforetheywilldrawsufcientlytostartare.Tocorrectthis
situation,rollupacouplepiecesofnewspaper,placethem
ontopofthekindlingandtowardthebackofthestove,light
them,and closethe doors.Thisshould heat thechimney
enoughtoinitiateadraft.
Oncethedraftisestablished,openthefrontdoorandlight
therestofthefuelfromthebottom.Donotlightthemain
bed of fuel until the chimney begins drawing, and repeat
theprocedureasoftenasnecessaryiftheinitialattemptis
unsuccessful.
4. Onceagoodemberbedofatleast3-4"(76-102mm)
hasformed,addthedesiredamountofwoodandclose
theprimaryaircontroltoamedium-lowsetting.There
volume will diminish immediately, but the Montpelier
MediumInsertwillcontinuetoheatup.Maintaincontrol
ofthereusingtheprimaryaircontrol,andremember:
reducethesettingforlessheat,increasethesettingfor
moreheat.RefertotheaircontrolsettingschartonPage
11forrecommendedsettingsatdifferentburnrates.
Do not over-re this heater.
Overring may cause a house re, or can result in
permanent damage to the stove. If an exterior part of
the Montpelier Medium Insert glows, you are overring.
Reloading and Reviving a Wood Fire
Settheaircontrolon“High,”andwaitatleastfteenseconds
forthedrafttoincrease.Turntheconvectionbloweroff.Open
thedoorslowly.
IMPORTANT: While the stove is hot, toss and sift the
coals with each stove loading. This loosens and helps
burn coals that become buried in the ash. Push coals
away from the three bottom air jets. Creating this “void”
helps maintain a reliable re.
Check the ash level, and remove excess ash. Three (3)
primaryairholeslocatedunderthefrontbrickprovideairto
thecoalbed.(Figure11)Theseholesshouldbeclearedof
ashforproperperformance.
Addthefuel,smallerpiecesrst.Ifitisnecessarytouse
woodsmallerthanthe18"(460mm)optimumsize,besure
tollthereboxascompletelyaspossiblebyloadingthe
woodpiecesalternatelyontheleftandright.Splitwoodwill
llthereboxmorecompletelyandreducethefrequencyof
reloading.Ifpossible,stackwooddiagonallytomaximizeair
spacesbetweenredpieces.
I fyouhaveanemberbedofatleast2-3"(51-76mm),the
airsettingmaynotneedtobeadjusted.Iftheemberbedis
lessthan2-3"(51-76mm),youmayhavetoleavetheair
settingonhighforafewminutesuntilamesappear.
Finally,adjusttheaircontrolandfanspeedforyourdesired
heatlevel.
Followtheseguidelinesasyoustartandmaintainthere,and
removetheashes.Priortostartingarewithacoldstove,it
isrecommendedtoclearthelowerprimaryairholeslocated
underthefrontbrick.Todothis,removetheandironandlift
outthefrontrefractorybrick.Sweepanyashaccumulation
outofthethree(3)airslots.Keepingtheseslotsclearofash
willensurebetterperformance.
1. Opentheprimaryaircontrolfully.
2. Laysomecrumplednewspapersinthebottom.Placeon
thepapersixoreightpiecesofdry,nely-splitkindling.
Onthekindlinglaytwoorthreelargersticksofsplitdry
woodapproximately1-2"(25-50mm).
Do not use chemicals or uids to start the re. Do not burn
garbage or ammable uids such as gasoline, naptha,
or engine oil. Also, never use gasoline-type lantern fuel,
kerosene, charcoal lighter uid, or similar liquids to start
or “freshen up” a re in this heater. Keep all such liquids
well away from the heater while it is in use.
3. Lightthenewspaperandclosethedoor.Graduallybuild
uptherebyaddingafew3-5"(76-127mm)diameter
splits.
Ifthisisyourinitialbreak-inre,letthereburnbrightly,but
nottoexcess.Controlthere’sintensitybyadjustingtheair
controllever.Afteranhourorsostopaddingwoodsothat
therediesoutgradually.
Forongoingoperationaftertheinitialbreak-in,continueto
addafewsticksatatimeofaprogressivelylargersize.Be
suretokeepthefuelloadbehindthefrontgratebaratall
times. Continueuntil you havea live emberbed at least
3-4"(76-102mm)deep.Thismaytakeanhourorlonger,
particularlywhentheMontpelierMediumInsertisventedtoan
exteriormasonrychimneyorwhenyouarejuststartingare.
NOTE:Effectivenessofa“top-down”methodtostartare.
Smoke emissions when starting a re can be difcult to
controlbecausetheinsertisnotyetheatedtoitsoptimum
temperature.Onemethodofreducingemissionsduringa
coldstart-upistheuseofa“top-down”kindlingprocedure.
Inthis,placelargerpiecesofkindlingonthebottomofthe
kindlingpilefollowedbysmallerandsmallerpiecesasthe
pileisaddedto.Verynelysplitpiecesshouldbeonthe
top.Lightthekindlingpilewithamatchatthetopandallow
thekindlingtoburndownwardintothelargerpieces.This
reduces smoke by slowly increasing the re size without
creatinganair-starvedcondition.
You’llsoonndthattheinsertisHOT WHILE IN OPERATION!
KEEP CHILDREN, CLOTHING, AND FURNITURE AWAY.
CONTACT MAY CAUSE SKIN BURNS.
Operate your Montpelier Medium Insert only with the
door fully closed. If the door is left partially open, gas
and ame may be drawn out of the replace opening,
creating risks of both re and smoke.
WARNING
!

14 Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
ST1004
primary air holes
3/08
PrimaryAir
Holes
Bottom
Brick
Andiron
Figure 11 - Keep primary air holes free of ash for proper
performance.
Remove and Store Ash Safely
Checktheashlevelbeforereloadingthestove,removeashes
ifnecessary.Turnoffthefanbeforeshovelingtheashinto
yourashcontainer.
Remove ash regularly, typically every one to three days.
Thefrequencywillvarydependingonhowyouoperateyour
MontpelierMediumInsert;morewoodisconsumedathigher
heatoutputsettings,andashwillaccumulatefaster.
DisposalofAshes-Ashshouldberemovedfrequentlyand
placedoutdoorsinametalcontainerwithatight-ttinglid.The
closedcontainerofashshouldbeplacedonanon-combustible
oororontheground,wellawayfromallcombustiblematerials,
pendingnaldisposal.Iftheashisdisposedofbyburialin
soil or otherwise locally dispersed, it should be retained in
theclosedcontaineruntilallcindershavethoroughlycooled.
Woodashmaybeusedasagardenfertilizer.
CAUTION
!
Never use your household or shop vacuum cleaner to
removeashfromthereplace;alwaysremoveanddispose
oftheashproperly.
NOTE:Ifthecharcoalbedisrelativelythickandyourfuelis
well-seasoned,itispossibletoaddfreshfuel(smallerpieces
rst),closethedoor,andresettheaircontrolimmediately.
Special Tactics for Cold-Climate Heating
TheMontpelierMediumInsertiscapableofproducingupto
40,000Btu/hourandheatinganareaofupto1,500sq.ft.
However,manyfactorsaffectheatingperformanceandcan
inuencetheextenttowhichtheMontpelierMediumInsert
canheatagivenarea.
Awell-insulatedhome,locatedinamoderateclimateandwith
theMontpelierMediumInsertlocatedcentrallyinanopen
oorplan,willbeeasiertoheatthanadraftyhomeinthefar
northinwhichaMontpelierMediumInsertisinstalledonan
exteriorwallattheendofalonghouse.
In Fireplace Insert installations, over-sized chimneys can
producelesseffectiveresultsthanthosethatareproperly
sized,andinteriorchimneysusuallyperformbetterthanthose
locatedoutsidethehouse.
Different results may be experienced even in the same
installationifyouswitchfromburninggood,drywoodtowood
thatispartiallyrottedorinadequatelyseasoned.
Tocompensateforthesefactorsincoldclimates,itmaybe
necessarytooperatetheMontpelierMediumInsertforlonger
periodsoftimewiththeaircontrolsettoahigherlevelmore
ofthetime.

15 Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
Maintenance
Keep Your Montpelier Medium Insert Looking New and
Working Its BestCare of the Cast Iron Surface
Anoccasionaldustingwithadryragwillkeepthepainted
castironofyourMontpelierMediumInsertlookingnew.
Ifthepaintneedsretouching,rstallowthesurfacetocool
completely. Mask glass, trim parts and enamelled areas.
Wire-brushthoseareastobepainted.Touch-upwithhigh
temperature stove paint available from your local dealer.
Apply the paint sparingly. Two light coats are better than
oneheavyone.
Care of the Porcelain Enamel Surface
Useasoftbrushasnecessary.Donotusewaterorother
liquidsonyourMontpelierMediumInsert.Fingerprintsusually
canbebuffedoffporcelainenamelwithadry,softcloth.If
marksremain,allowtheMontpelier MediumInserttocool
completely, then buff with a slightly damp, soft cloth. Dry
completelybeforestartingaretoavoidstreaking.
Never use abrasives or harsh chemical cleaners on the
porcelainenamelnish;theenamelmayscratchandexpose
thecastiron,whichcanthenstainorrust.Ifyoumustremove
spillsorstainsfromporcelainsurfaces,makesurethereis
outandtheMontpelierMediumInserthascooledcompletely
before cleaning.  Use a kitchen appliance cleaner and/or
polishspecicallyformulatedforenamelsurfaces.Applythe
cleanersparinglywithasoftcloth,andbuffawayalltraces.
Cleaning the Glass
The Montpelier Medium Insert glass system requires a
minimum amount of cleaning. Most carbon deposits that
accumulatewillburnoffduringhotres.
Ash residue that accumulates on the glass should be
removedperiodicallytopreventetching.Tocleantheglass,
usethefollowingprocedure.
• Besuretheglassiscompletelycool.
• Cleaning with water will work in most cases.  Use a
glass cleaner especially made for this purpose only if
deposits are specially heavy. (If heavy deposits are a
frequentoccurrence, however,evaluateyour operating
techniques.)Donotuseabrasivecleaners.
• Rinsetheglassthoroughly.
• Drytheglasscompletely.
ST531
Door Pawl
11/00
Pawl
Small
Locking Nut
Large
Locking Nut
SetScrew
StrikerScrew
HandleStub
Figure 12-Turnthedoorlatchstrikerscrewinorouttotightenor
loosenthedoorlatch.
Testthedoorseal.Closethedooronadollarbillandattempt
topullitfree.Ifthebillisfreedwithlittleresistance,thegasket
isn’t snug enough at that spot.  Continue to make small
adjustmentsuntilthesettingisright.
Ifadditionaladjustingofthelatchdoesnotenablethedoorto
sealsufcientlyinonearea,try“adjusting”thegasketinthat
area.Packmorecementorasmallerdiametergasketintothe
channelbeneaththegasketsothemaingasketisraisedand
makescontactwiththedoorframe.Ifthisproceduredoesn’t
solvetheproblem,replacethegasket.Instructionsforgasket
replacementaregivenlaterinthissection.
Adjust the Door Latch Periodically
ThefrontdooroftheMontpelierMediumInsertshouldclose
securelytopreventaccidentalopeningandshouldclosetightly
topreventairfromleakingintotherechamber.Thedoor
handlewillbepositionedverticallywhenthedoorisclosed.
Over a period of time, the gasket around the door will
compressandthelatchmayneedadjustment.Toadjustthe
handle,followthisprocedure:
1. Loosenthesmalllocknutwitha7/16"wrench.(Figure
12)
2. Extendthestrikerscrewoneturnbyturningitwitha1/8"
Allenwrench.
3. Re-tightenthelocknut,whileatthesametimeholding
thestrikerscrewwiththeAllenwrenchtopreventitsturning.

16 Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
Removing and Replacing Door Glass
Followthisproceduretoreplaceglass.
• Openthedoorandloosenthefourretainingclipscrews
thatholdtheglasstothedoor.Swingtheclipsoutofthe
way.Tilttheglassawayfromthedoorframeandliftup.
(Figure13)Wearglovesandusecautionwhenhandling
brokenglass.
WARNING
!
HOT GLASS WILL
CAUSE BURNS.
DO NOT TOUCH GLASS
UNTIL COOLED.
NEVER ALLOW CHILDREN
TO TOUCH GLASS.
Figure 13 -Replaceglass.
ST999
replace glass
1/08
DoorGasket
GlassGasket
GlassPanel
Retainer
Clips(4)
• Examinethegasketthatsealstheglasstothedoorframe.
Ifnecessary,replacethiswithgasketobtainedfromyour
localVermontCastings’authorizeddealer.Directionsfor
replacinggasketsaregivenbelow.
• Checkthechannelatthebottomofthedoorframe,and
clearawaydebrisifnecessary.
• Carefullyplacethenewglassinthedoorframe.
• Secure the clips, being careful not to over-tighten. Be
suretheglassisrmlyseatedagainstthegasket.Close
thedoorgentlytoconrmtheclipshavebeenproperly
positioned.Itispossiblefortheglasstobedamagedif
theclipshavebeeninstalledincorrectlyandthedooris
closedwithforce.
How to Replace Gaskets
Your Montpelier Medium Insert uses rope-type berglass
gaskets to make a tight seal between some parts.  With
use, particularly on those parts that move, gaskets can
becomebrittleandcompressedandcanbegintolosetheir
effectiveness.Thesewillneedperiodicreplacement.
Allofthegasketsusedaremadeofberglass.Thethree
sizesofreplaceablegasketarelistedbelow,alongwiththeir
application.
Replaceable Montpelier Medium Insert Fiberglass
Gaskets
 GasketSize...................ThePartsItSeals
 3/8"(1203564)...............Doortothefront–5.6'
 3/8"(30002422).............Fireboxparts
 3/16"(1203556).............Glasstothedoor–5.2'
Tochangeagasket,waituntilthereisoutandthestove
hascooled.Wearprotectiveeyewearandadustmask.The
procedureisthesameforallgaskets.
1. Removetheexistingberglassgasketbygraspinganend
andpullingrmly.
2. Useawirebrushorthetipofascrewdrivertocleanthe
channelofanyremainingcement,siliconeorbitsofgasket.
3. Apply a thin bead of high temperature silicone to the
newly-cleanedgroove.A1/8"-3/16"beadissufcient.
4. Placeanewgasketintothegroove.Waituntilyouhave
placedallbutacoupleinchesfromtheendbeforeyou
trimtheendtoanexactt.
IMPORTANT NOTES
• DonotoperatetheMontpelierMediumInsertifthe
glassisdamagedorbroken.
• Donotabuseglassbystrikingwithanyobjectorby
slammingthedoor.
• Replace glass only with Vermont Castings high
temperature ceramic glass, available from your
VermontCastings’authorizeddealer.

17 Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
If it is necessary to remove the rechamber to inspect or
cleanthechimney,thisishowtodoit:
• LettheMontpelierMediumInsertcool.
• Disconnectthefanpowercord.
• Youmaywishtolightenthereboxbyremovingthe
loaddoorandandiron.
• Retract the two levelling screws until they bear no
weight.
• Removethefrontairtubeandberbafe.
• Disconnecttheuecollarorventconnectorfromthe
topofthestove.
• Slidetherechamberforwarduntilyouhaveaccess
tothereplaceopening.
• Inspecttheue.
Youcannowinspectthesmokeshelfareaofthereplace
andthechimney.BeforereplacingtheMontpelierMedium
Insert,thisareashouldbeinspectedforsignsofdeterioration
andcleanedthoroughlywithachimneybrush.
Cleanthechimneyusingaspeciallydesignedbrushthesame
sizeandshapeastheueliner.Flexibleberglassrodsare
usedtorunthebrushupanddowntheliner,causingany
depositstofalltothebottomofthechimneywheretheycan
beremovedthroughtheclean-outdoor.
Thechimneyconnectorshouldbecleanedbydisconnecting
thesections,takingthemoutside,andremovinganydeposits
withastiffwirebrush.
Reinstalltheconnectorsectionsaftercleaning,beingsure
tosecuretheindividualsectionswithsheetmetalscrews.
Ifyoucan’tdothechimneyinspectionyourself,contactyour
local Vermont Castings’Authorized Dealer, or engage a
professionalchimneysweeptoperformtheinspectionand
cleaningofthechimney.
Reversetheproceduretore-installtherechamber.
Replacing the Door Gaskets
• Removethedoorbyliftingitstraightupfromitshinge
pins.
• Layitfacedownonapaddedsurface.
• Removetheglass.Followtheinstructionsforremoving
andreplacingglasswhichstartonPage15.
• Replacegaskets.Followsteps1-4,above.
• Replacetheglass.
• Replacethedoor.
The Chimney System
A Clean Chimney System is Safer and Works Better
Although the non-catalytic combustion system in your
Montpelier Medium Insert can reduce creosote formation
dramatically,itisnotasubstituteforregularinspectionand
cleaningofthechimneyandchimneyconnector.
Learn to Recognize and Avoid Creosote
Your Montpelier Medium Insert has been designed to
minimize creosote build-up. Regular chimney inspection
and maintenance, however, must still be performed.  For
safety,goodstoveperformance,andtoprotectyourchimney
andchimneyconnector,inspectyourchimneyandchimney
connector on a regular schedule.  Clean the system if
necessary.Failuretokeepthechimneyandconnectorsystem
cleancanresultinaseriouschimneyre.
Creosote-FormationandNeedforRemoval-Whenwood
isburnedslowly,itproducestarandotherorganicvapors,
whichcombinewithexpelledmoistuetoformcreosote.The
creosotevaporscondenseintherelativelycoolchimeyueof
aslow-burningre.Asaresult,creosoteresidueaccumulates
on the ue lining. When ignited, this creosote makes an
extremely hot re. The chimney and chimney connector
shouldbeinspectedatleastonceeverytwomonthsduring
theheatingseasontodetermineifacreosotebuilduphas
occurred.Ifcreosotehasaccumulated,itshouldberemoved
toreducetheriskofachimneyre.
Ifyoudoexperienceachimneyre,actpromptlyto:
• Closetheprimaryaircontrollever(fullytotheright).
• Geteveryoneoutofthehouse.
• CalltheFireDepartmentfromanearbyhouse.
Youshouldinspectthesystemeverytwomonthsduringthe
heatingseasonaspartofaregularmaintenanceschedule.
Toinspectthechimney,lettheMontpelierMediumInsertcool
completely.Then,usingastronglight,sightupthroughthe
uecollarintothechimneyue.Theberbafewillneedto
beremovedgentlytoviewinsidetheconnectorpipe.

18 Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
For parts and information about your insert, contact your
Vermont Castings authorized dealer. For the name of the
dealernearestyou,visit:www.vermontcastings.com
Optional Accessories
Fireplace System Maintenance Schedule
Fireplace:
Daily:
• Ashshouldberemovedbeforethelevelreachesthetop
edgeofthefrontbrick.Checkeachtimeyoure-load,or
atleastonceaday.
• Keep the area around the fireplace clear of any
combustiblematerial.
Yearly Spring Cleaning:
• Removeashfromthereboxandreplacewithamoisture-
absorbingmaterial(suchaskittylitter)tokeeptheinterior
ofthestovedry.
• Touchuppaintedsurfaceswithblackpaint.
Flex Connection:
Two Months:
• Inspect the chimney and flue connection. Clean the
systemifnecessary.
Yearly Spring Cleaning:
• Disassemble the ue connection and take it outdoors
for inspection and cleaning. Replace weak sections of
connector.
• Inspectthechimneyforsignsofdeterioration.Repairsto
amasonrychimneyshould be madebyaprofessional
mason. Replace damaged sections of prefabricated
chimney. Your local Vermont Castings’ dealer or a
chimneysweepcanhelpdetermine when replacement
isnecessary.
• Thoroughlycleanthechimney.
Georgian Cast Surround
Model Color
30DVSGTKCB ClassicBlack
30DVSGTKBM BrownMajolica
Mead Cast Surround
Model Color
MEAD3CB ClassicBlack
MEAD3BM BrownMajolica
Caprice Cast Adjustable Prole Surround
Model Color
CAPCB ClassicBlack
Steel Surround
Model Color
LHE30SSB ClassicBlack(Small)
LHE30SLB ClassivBlack(Large)
Extended Trim Plate
LHE30TCK(Cannotbeusedalone)
DYI Inside Fit Surround Kit
DIYSK-Includestemplate,bracketsandinstructions.
Additionalmaterialsmustbepurchasedlocally.
3" Extension Package
Model Color
M3PKCB ClassicBlack

19 Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
VermontCastingsreservestherighttomakechangesindesign,materials,specications,pricesanddiscontinuecolorsandproductsatanytime,without
notice.
Montpelier Medium Insert
1
3
4a
5
6
7
8
9
9
10
11
12
13
15 14
16
17 18
19
20
20
21
22
23
24
25
26
27
28
30
31
32
33
34
35
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43 44
45 46
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49 50
2
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36
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4403
Montpelier parts
1/08
54
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4b
Service Parts List
Ref Description Part Number
1Bottom 30004306
2Insulation,BottomLow 30004335
3 Brick,BottomLow 30004327
4a Brick,BottomSlantedRight 30006706
4b Brick,BottomSlantedLeft 30006707
5 Brick,Back 30004326
6 Brick,BottomUp 30004329
7 Brick,RightEnd 30004330
8 Brick,LeftEnd 30004331
9 Insulation,EndInt. 30004334
10 End,Right 30004308
11 End,Left 30004309
12 Back 30004307
13 Andiron 30004321
Ref Description Part Number
14 TubeA,SecondaryAirTube 30004377
15 TubeB,SecondaryAirTube 30004378
16 Bafe 30004332
17 Top 30004310
18 RightSideHeatShield,SecondaryAir 30004501
19 LeftSideHeatShield,SecondaryAir 30004500
20 Insulation,EndExt. 30004333
21 AirPlate 30004315
22 Pinion 30004320A
23 HandleWire 164504
24 Handle,WoodBlack 1600663
25 Cover,Top 30004316
26 Spring,Friction 1201846
27 Front-RefertoEnamelPartsChart

20 Vermont Castings • Montpelier Medium Insert Installation & Operating Manual_R26 • 05/19 3-90-30004403
Montpelier Medium Insert (continued)
Shell Enamel Parts - Montpelier Medium Insert
Part Name Classic Black Brown Majolica
Front w/SpacerAsy 30004722K 30004903
Door 30004312A 30004908
Ashlip 30004322A 30004904
FrontPanel 30004323A 30004905
PanelDoor 30004324A 30004906
TopFiller 30004336A 30004902
NOTES:
* Useifwireassemblyisattachedtorebox-Pre2/24/11
** Useifbracketisattachedtorebox-Pre2/24/11
Ref Description Part Number
28 HingeHalfBody-Upper 1604281
29 InsulationBottomHeatShield 30004402
30 BottomHeatShield 30004393
31 Base 30004313
32 FanKitAssembly 30004416
ReplacmentBlowerOnly 30004412
SnapstatWireAssy 30004406*
SnapstatWireAssy 30005535
RheostatandWireAssy 30004407
PowerCord 1601782
Snapstat 30005236
SnapstatBracket 30005538
DKnob 1604419
33 Ashlip-RefertoEnamelPartsChart
34 BottomAssembly 30004797
35 Cover,PowerCord 30004379
36 Shroud,Outer 30004392
37 Shroud,Top SRV30004614
38 FlueCollar 30004317
39 FlangeRightSideSurround 30004381
Ref Description Part Number
40 FlangeLeftSideSurround 30004380
41 Clip-Glass 30001715
42 GlasCeramic,0.190"Thick,Uncoated 30004325
43 PawlAssy1"LongAdjustable 30002362
44 FrontSteelHandle/Shaft 30002717
45 GasketFiberglass3/16 1203556
46 GasketFiberglass3/8 1203589
47 HingeHalfDoor-Upper 30004564
48 Door-RefertoEnamelPartsChart
49 FlangeTopSurround 30004382
50 FillerTop-RefertoEnamelPartsChart
51 Panel-RefertoEnamelPartsChart
52 PanelDoor-RefertoEnamelPartsChart
53 Pin,Door 30004384
54 CoverPlate,BottomAir 30004419
55 SnapstatBracket 30004519**
56 Handle,WoodBlack 1600664
57 HandleScrew 1201310
58 Airwash 30004314
59 HingeSpacer 30004708