Lennox Hearth Indoor Fireplace 875027M User Manual

CARE AND OPERATION INSTRUCTIONS  
Montebello®  
Direct Vent Gas Fireplaces  
MODELS  
P/N 875027M Rev. H 06/2011  
This manual is part of a set of two supporting this product.  
Refer to P/N 850026M for Installation Instructions.  
Ce manuel est disponible en francais, simplement  
en faire la demande. Numéro de la pièce 875027CF.  
MILLIVOLT:  
ELECTRONIC:  
LSM40MN-2  
LSM45MN-2  
LSM45MP-2  
LSM40EN-2  
LSM45EN-2  
LSM40MP-2  
WHAT'S INSIDE  
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Safety and Your Fireplace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
FREE Safety Guard Offer (Protects Against Burns) . . . . . . . . . . . . . . . . . 2  
Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Attaching the Safety-in-Operation Warnings . . . . . . . . . . . . . . . . . . . . . 5  
Portland  
US  
OTL Report No. 116-F-22-5  
[EN FRANÇAIS] Linformation de sûreté importante . . . . . . . . . . . . . . . 3–4  
Apposition des mises en garde relatives à la sécurité d’utilisation . . . . 5  
[EN ESPAÑOL] Información importante de seguridad . . . . . . . . . . . . . . 3–4  
Colocación de advertencias de seguridad en operación . . . . . . . . . . . . 5  
Wait...  
DON’T  
THROW  
INSTALLER: Leave this manual with the appliance.  
CONSUMER: Retain this manual for future reference.  
INSTALLATEUR : Laissez cette notice avec l'appareil.  
IT AWAY!  
This manual contains  
important operating  
and safety  
CONSOMMATEUR : Conservez cette notice pour consultation ultérieure.  
information.  
/
/
WARNING AVERTISSEMENT AVISO  
• HOT GLASS WILL CAUSE  
BURNS.  
• DO NOT TOUCH GLASS  
UNTIL COOLED.  
• UNE SURFACE VITRÉE CHAUDE  
PEUT CAUSER DES BRÛLURES.  
• LAISSER REFROIDIR LA SURFACE  
VITRÉE AVANT D'Y TOUCHER.  
• EL VIDRIO CALIENTE  
CAUSARÁ QUEMADURAS.  
• USTED DEBE NUNCA  
TOCAR EL VIDRIO CALIENTE.  
• NEVER ALLOW CHILDREN  
TO TOUCH GLASS.  
• NE PERMETTEZ JAMAIS À UN ENFANT • LOS NIÑOS DEBEN NUNCA  
DE TOUCHER LA SURFACE VITRÉE.  
TOCAR EL VIDRIO.  
WARNING: If the information in these instructions  
is not followed exactly, a fire or explosion may  
result, causing property damage, personal injury,  
or death.  
AVERTISSEMENT : Assurez-vous de bien suivre les  
instructions données dans cette notice pour réduire au  
minimum le risque d’incindie ou d’explosion ou pour  
éviter tout dommage matériel, toute blessure ou la mort.  
- Do not store or use gasoline or other flammable  
vapors and liquids in the vicinity of this or any other  
appliance.  
- Ne pas entreposer ni utilizer d’essence ni d’autres vapeurs  
ou liquides inflammables dans le voisinage de cet appareil  
ou de tout autre appareil.  
- WHAT TO DO IF YOU SMELL GAS:  
• Do not try to light any appliance.  
• Do not touch any electrical switch; do not use any  
phone in your building.  
• Immediately call your gas supplier from a  
neighbor’s phone. Follow the gas supplier’s  
instructions.  
• If you cannot reach your gas supplier, call the fire  
department.  
- Installation and service must be performed by a  
qualified installer, service agency or the gas supplier.  
- QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ :  
• Ne pas tenter d’allumer d’appareil.  
• Ne touchez à aucan interrupteur. Ne pas vous servir des  
téléphones se trouvant dans le bâtiment où vous trouvez.  
• Appelez immédiatement votre fournisseur de gaz depuis  
un voisin. Suivez les instructions du fournisseur.  
• Si vous ne pouvez rejoindre le fournisseur de gaz,  
appelez le service des incindies.  
- L’installation et l’entretien doivent être assurés par un  
installateur ou un service d’entretien qualifié ou par le  
fournisseur de gaz.  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
[FRENCH]  
[SPANISH]  
La sécurité et  
votre foyer  
Seguridad y  
su chimenea  
Toutes les parties de votre foyer  
Lennox Hearth Products deviennent  
EXTRÊMEMENT CHAUDES !  
¡Todas las partes de la chimenea  
Lennox Hearth Products se ponen  
MUY CALIENTES!  
Afin d'éviter de vous brûler gravement ou de  
vous blesser, installez une grille ou une barrière  
physique pour empêcher tout contact direct  
avec la vitre.  
Instale una malla o barrera física para evitar  
el contacto directo con el vidrio y prevenir  
las quemaduras y lesiones graves.  
Ver los detalles a la izquierda para ordenar  
un Lennox® SAFETY GUARD GRATIS  
para su chimenea.  
Pour commander un PANNEAU DE PROTECTION  
Lennox® GRATUIT pour votre foyer, consultez  
les détails dans la partie gauche.  
Siga las instrucciones de seguridad a  
continuación y asegúrese de que todos  
en su hogar sepan acerca de este peligro  
de quemadura:  
Suivez les instructions de sécurité ci-dessous  
et veillez à ce que tous les membres de votre  
famille soient conscients du danger de brûlure  
encouru :  
¡Las superficies de la chimenea se ponen  
Les surfaces de votre foyer deviennent  
MUY CALIENTES!  
EXTRÊMEMENT CHAUDES !  
El vidrio delante de la chimenea alcanza  
temperaturas EXTREMADAMENTE ALTAS y  
puede causar quemaduras graves si se toca.  
La vitre située à l'avant du foyer  
atteint des températures  
EXTRÊMEMENT ÉLEVÉES et peut causer  
de graves blessures en cas de contact.  
Mantenga a los niños alejados de la  
chimenea en funcionamiento. Supervise  
en forma cercana a los niños en cualquier  
cuarto donde haya una chimenea  
funcionando para impedir el contacto  
con el vidrio.  
Tenez les enfants à l'écart du foyer lorsqu'il  
fonctionne. Surveillez attentivement  
les enfants dans les pièces où un foyer  
est utilisé afin d'éviter qu'ils ne soient  
en contact avec la vitre.  
Mantenga la ropa, mobiliario, gasolina  
y otros líquidos inflamables alejados  
de la chimenea.  
Tenez tous les vêtements, les  
meubles, l'essence et tout autre  
liquide inflammable à l'écart du foyer.  
Aún después de haber apagado el gas,  
las superficies de la chimenea permanecen  
extremadamente calientes.  
Même après fermeture du gaz, les surfaces  
du foyer restent extrêmement chaudes.  
Veillez à coller les Étiquettes de mise en garde  
relatives à la sécurité d'utilisation à l'endroit  
où vous utilisez le foyer, pour rappeler à tous les  
utilisateurs les dangers liés aux températures  
élevées (voir page 5).  
Asegúrese de colocar las Etiquetas de  
advertencia de seguridad de operación en  
el lugar donde enciende la chimenea, para  
que todos recuerden los peligros asociados  
con las altas temperaturas (ver la página 5).  
Lisez la section Informations importantes  
Lea la Información importante de seguridad  
relatives à la sécurité, page 4.  
en la página 4.  
3
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
Important Safety Information  
L'information de sûreté importante  
1. AVERTISSEMENT. Ne pas utiliser l’appareil si le panneau frontal  
en verre n’est pas en place, est craqué ou brisé. Confiez le  
remplacement du panneau à un technicien agréé  
1. WARNING: Do not operate appliance with the glass front  
removed, cracked or broken. Replacement of the glass  
should be done by a licensed or qualified service person .  
2. Ne pas utiliser cet appareil s’il a été plongé, même partiellement,  
dans l’eau. Appeler un technicien qualifié pour inspecter  
l’appareil et remplacer toute partie du système de commande  
et toute commande qui a été plongée dans l’eau.  
2. Do not use this appliance if any part has been under water.  
Immediately call a qualified service technician to inspect  
the appliance and to replace any part of the control system  
and any gas control which has been under water.  
3. En raison des températures élevées, l’appareil devrait être  
installé dans un endroit où il y a peu de circulation et loin du  
mobilier et des tentures.  
3. Due to high temperatures, the appliance should be located  
out of traffic and away from furniture and draperies.  
4. Les enfants et les adultes devraient être informés des dangers  
que posent les températures de surface élevées et se tenir à  
distance afin d’éviter des brûlures ou que leurs vêtements ne  
s’enflamment.  
5. On ne devrait pas placer de vêtements ni d’autres matières  
inflammables sur l’appareil ni à proximité.  
4. Children and adults should be alerted to the hazards of  
high surface temperature and should stay away to avoid  
burns or clothing ignition.  
5. Clothing or other flammable material should not be placed  
on or near the appliance.  
6. Les jeunes enfants devraient être surveillés étroitement lorsqu’ils  
se trouvent dans la même pièce que l’appareil. Les tout petits,  
les jeunes enfants ou les adultes peuvent subir des brûlures s’ils  
viennent en contact avec la surface chaude. Il est recommandé  
d’installer une barrière physique si des personnes à risques  
habitent la maison. Pour empêcher l’accès à un foyer ou à un  
poêle, installez une barrière de sécurité ; cette mesure empêchera  
les tout petits, les jeunes enfants et toute autre personne à risque  
d’avoir accès à la pièce et aux surfaces chaudes.  
6. Young children should be carefully supervised when they  
are in the same room as the appliance. Toddlers, young  
children, and others may be susceptible to accidental  
contact burns. A physical barrier is recommended if there  
are at-risk individuals in the house. To restrict access to a  
fireplace or stove, install an adjustable safety gate to keep  
toddlers, young children, and other at-risk individuals out  
of the room and away from hot surfaces.  
7. Any safety screen or guard removed for servicing an  
appliance must be replaced prior to operating the  
appliance.  
7. Tout écran ou protecteur retiré pour permettre l’entretien de  
l’appareil doit être remis en place avant de mettre l’appareil en  
marche.  
8. Linstallation et la réparation devrait être confiées à un technicien  
qualifié. Lappareil devrait faire l’objet d’une inspection par un  
technicien professionnel avant d’être utilisé et au moins une  
fois l’an par la suite. Des nettoyages plus fréquents peuvent  
être nécessaires si les tapis, la literie, et cetera produisent  
une quantité importante de poussière. Il est essentiel que les  
compartiments abritant les commandes, les brûleurs et les  
conduits de circulation d’air de l’appareil soient tenus propres.  
Voyez les instructions d’entretien à la page 9.  
8. Installation and repair should be done by a qualified  
service person. The appliance should be inspected  
before use and at least annually by a professional service  
person. More frequent cleaning may be required due to  
excessive lint from carpeting, bedding material, et cetera.  
It is imperative that control compartments, burners, and  
circulating air passageways of the appliance be kept  
clean. See maintenance instructions on page 9.  
[SPANISH]  
6. Se debe supervisar de cerca a los niños cuando estén en el mismo  
cuarto que el artefacto. Los niños pequeños, los jóvenes y otras  
personas pueden ser susceptibles a quemaduras por contacto  
accidental. Se recomienda instalar una barrera física si hay  
personas en riesgo en la casa. Para restringir el acceso a una  
chimenea o estufa, instale una puerta de seguridad ajustable  
para mantener a los niños pequeños, jóvenes y otras personas  
en riesgo fuera del cuarto y lejos de las superficies calientes.  
Información importante de seguridad  
1. ADVERTENCIA: No opere el artefacto con el frente de vidrio quitado,  
agrietado o roto. Un técnico de servicio licenciado o capacitado  
debe reemplazar el vidrio.  
2. No use este artefacto si alguna de sus partes ha estado bajo agua.  
Llame de inmediato a un técnico de servicio calificado para que  
inspeccione el artefacto y reemplace cualquier parte del sistema  
de control y cualquier control de gas que haya estado bajo agua.  
7. Cualquier malla o resguardo de seguridad quitado para dar servicio  
a un artefacto, debe reinstalarse antes de operar el artefacto.  
3. Debido a las altas temperaturas, el artefacto debe situarse fuera  
de las áreas de tráfico y lejos del mobiliario y cortinas.  
8. Una persona de servicio competente debe realizar la instalación y  
reparación. Una persona de servicio profesional debe inspeccionar  
el artefacto antes de usar al menos una vez por año. Se puede  
requerir limpieza más frecuente debido a la pelusa excesiva  
del alfombrado, del material de cobijas, etc. Es imprescindible  
mantener limpios los compartimientos de control, los quemadores  
y los pasajes de circulación del aire del artefacto. Ver las  
instrucciones de mantenimiento en la página 9.  
4. Se debe alertar a los niños y adultos sobre los peligros de  
las altas temperaturas en la superficie y que se mantengan  
alejados para evitar quemaduras o ignición de la ropa.  
5. No debe colocarse ropa u otros materiales inflamables  
sobre y cerca del artefacto.  
4
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
HOMEOWNER’S INSTRUCTIONS - ATTACHING SAFETY-IN-OPERATION WARNINGS  
ATTACHING SAFETY-IN-OPERATION  
WARNINGS  
APPOSITION DES MISES EN GARDE RELATIVES  
à LA SÉCURITÉ D’UTILISATION  
COLOCACIóN DE ADVERTENCIAS DE  
SEGURIDAD EN OPERACIóN  
Yourreplacehasbeenfurnishedwithsafetyinstruc- Votrefoyeraétélivréavecdesétiquettesdesécuritéqui Su chimenea incluye etiquetas de instrucciones de  
tion labels that are to be affixed to the operation and doivent être collées à côté des dispositifs de contrôle seguridadquedebencolocarseenelpuntodeoperación  
control point of the fireplace. A safety instruction du foyer. Une étiquette de sécurité doit être collée sur ycontroldelachimenea.Sedebecolocarunaetiquetade  
labelshouldbeaffixedtothewallswitchplatewhere la plaque de l’interrupteur contrôlant l’allumage du instruccionesdeseguridadenlaplacadelinterruptorde  
the fireplace is turned on and off (See Figure A) or foyer (voir Figure A) ou sur le thermostat mural (voir pareddesdeelcualseenciendeyseapagalachimenea  
wall thermostat (See Figure B) and if used on the Figure B) et, le cas échéant, sur le boîtier de la télé- (verlaFiguraA)oeneltermostatodepared(verlaFigura  
remote control handheld transmitter (Figure C). commande(FigureC). Lesmisesengardeauraientdû B) y en el transmisor de control remoto (Figura C) si  
The warnings should already have been put in place êtrecolléesaumomentdel’installationinitialedufoyer. se usa. Las advertencias ya deben haberse colocado  
when the fireplace initial set-up was completed. Si ce n’est pas le cas, prenez les étiquettes adhésives cuandosecompletólainstalacióninicialdelachimenea.  
If they are not affixed at these spots, locate the multilinguesfourniesaveccesinstructionsetprocédez Si no están colocadas en estos lugares, encuentre las  
multi-lingual adhesive labels provided with these comme suit:  
etiquetas adhesivas multilingües proporcionadas con  
instructions and proceed as follows:  
1. Repérez l’interrupteur ou le thermostat mural estas instrucciones y prosiga de la siguiente manera:  
qui contrôle le foyer (vérifiez que l’interrupteur 1. Identifique el interruptor o el termostato de pared  
1. Locate the wall switch or wall thermostat that  
controlsthereplace(verifytheswitchoperates  
the fireplace by turning it on and off). Clean the  
wall switch plate or wall thermostat thoroughly  
to remove any dust and oils. Affix the label to  
the surface of the plate of the wall switch that  
controls the fireplace (Figure A) or the wall  
thermostat (Figure B). Choose the language  
primarily spoken in the home.  
contrôle le fonctionnement du foyer en le faisant  
basculerdeMarcheàArrêt,etvice-versa). Nettoyez  
soigneusement la plaque murale de l’interrupteur  
ou le thermostat mural pour éliminer la poussière  
et les traces de graisse ou d’huile. Collez l’étiquette  
sur la surface de la plaque de l’interrupteur mural  
qui contrôle le foyer (Figure A) ou du thermostat  
mural (Figure B). Choisissez la langue qui est  
quecontrolalachimenea(verifiquequeelinterruptor  
opera la chimenea encendiéndola y apagándola).  
Limpiebienlaplacadelinterruptoroeltermostatode  
paredparaquitarelpolvoyaceite.Peguelaetiqueta  
enlasuperficiedelaplacadelinterruptorquecontrola  
la chimenea (Figura A) o en el termostato de pared  
(Figura B). Seleccione el idioma que más se habla  
en la casa.  
2. Ifaremotecontrolisusedtocontrolthereplace,  
locate the transmitter and clean it thoroughly  
principalement parlée dans la résidence du 2. Si se usa un control remoto para controlar la  
propriétaire.  
chimenea, encuentre el transmisor y límpielo bien  
para quitar el polvo y aceite. Pegue la etiqueta en la  
superficie del transmisor (Figura C). Seleccione el  
idioma que más se habla en la casa.  
to remove any dust and oils. Affix the label to 2. Si une télécommande est utilisée pour contrôler  
the surface of handheld transmitter (Figure C).  
Choose the language primarily spoken in the  
home.  
le foyer, nettoyez la soigneusement pour éliminer  
la poussière et les traces de graisse ou d’huile.  
Collez l’étiquette sur le boîtier de la télécommande 3. Sinopuedeencontrarlasetiquetas,sírvasellamara  
3. If you are unable to locate the labels, please call  
LennoxHearthProductsoryournearestLennox  
(Figure C). Choisissez la langue qui est principale-  
LennoxHearthProductsoaldistribuidordeLennox  
HearthProductsmáscercanopararecibiretiquetas  
deinstruccionesdeseguridadadicionalesgratuitas.  
ment parlée dans la résidence du propriétaire.  
Hearth Products dealer to receive additional 3. Si vous ne trouvez pas les étiquettes, veuillez  
safety instruction labels free of charge.  
appeler Lennox Hearth Products ou votre distribu-  
teur Lennox Hearth Products local pour recevoir  
gratuitement des étiquettes supplémentaires.  
Juego de etiquetas de repuesto - Nº de cat. H8024  
Cat. No. H8024 Replacement Label Kit  
LENNOX HEARTH PRODUCTS  
1-800-9-LENNOX  
LENNOX HEARTH PRODUCTS  
1-800-9-LENNOX  
Étiquettes de remplacement, n° cat. H8024  
LENNOX HEARTH PRODUCTS  
1-800-9-LENNOX  
Nota: La etiqueta en inglés es transparente con texto  
rojo. Las etiquetas en francés y español son negras  
con texto blanco.  
Note: English is red text on clear label. French and  
Spanish are white text on black label.  
Remarque : Le texte anglais est rouge sur un support  
transparent. Le texte français et espagnol est blanc  
sur un support noir.  
SAFETY LABEL  
DIAGRAMS  
DIAGRAMMES DES ÉTIQUETTES  
DE SÉCURITÉ  
DIAGRAMAS DE ETIQUETAS  
DE SEGURIDAD  
Figure C  
Figure B  
Figure A  
5
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
APPLIANCE INSTALLATION, SERVICE,  
AND MAINTENANCE NOTICES  
APPLIANCE OPERATION NOTICES  
WARRANTY INFORMATION  
Your gas appliance is covered by a limited  
twenty-year warranty. You will find a copy of  
thewarrantyaccompanyingthismanual. Please  
readthewarrantytobefamiliarwithitscoverage.  
Do not operate appliance with the glass  
front removed, cracked, or broken.  
IMPORTANT: Improper installation,  
adjustment, alteration, service, or  
maintenance can cause injury or property  
damage. Refer to this manual. For  
assistance or additional information,  
consult a qualified installer, service  
agency or the gas supplier.  
These fireplaces are vented gas appli-  
ances. Do not burn wood or other  
material in these appliances.  
Retain this manual. File it with your other docu-  
ments for future reference.  
This appliance is only for use with the  
type of gas indicated on rating plate. This  
appliance is not convertible for use with  
other gases, unless a certified kit is used.  
Failure to comply with the installation  
and operating instructions provided  
will result in an improperly installed  
and operating appliance, voiding its  
warranty.  
Only trim kit(s) supplied by the manufac-  
turer shall be used in the installation of  
this appliance.  
These appliances are designed to operate  
on natural gas or propane gas only. The  
use of other fuels or combinations of  
fuels will degrade the performance of this  
system and may be dangerous.  
Do not attempt to alter or modify  
the construction of the appliance or  
its components. Any modification  
or alteration may void the warranty,  
certification, and listings of this unit.  
Draft relief openings must not be covered  
or blocked.  
These appliances must not be connected  
to a chimney or flue serving a separate  
solid fuel burning appliance.  
Provide adequate clearances around  
air openings and adequate accessibility  
clearance for service and proper opera-  
tion. Never obstruct the front openings  
of the appliance.  
Any change to this appliance and/or  
its operating controls is dangerous.  
Improper installation or use of this  
appliance can cause serious injury or  
death from fire, burns, explosion or  
carbon monoxide poisoning.  
Do not use this appliance if any part has  
been under water. Immediately call a  
qualified service technician to inspect  
the appliance and to replace any part of  
the control system and any gas control  
that has been under water.  
CARBON MONOXIDE POISONING: Early  
signs of carbon monoxide poisoning are  
similar to the flu with headaches, dizzi-  
ness and/or nausea. If you have these  
signs, obtain fresh air immediately.  
Turn off the gas supply to the appliance  
and have it serviced by a qualified  
professional, as it may not be operating  
correctly. Some people are more  
affected by carbon monoxide than others,  
including pregnant women, people with  
heart or lung disease or anemia, those  
under the influence of alcohol, and those  
at high altitudes.  
Thesereplacesaredesignedassupple-  
mentalheaters.Therefore,itisadvisable  
to have an alternate primary heat source  
when installed in a dwelling.  
Turn off gas and electrical power to the  
fireplace and allow it to cool before  
cleaning or servicing the appliance.  
The vent termination is hot while in  
operation and for a period of time fol-  
lowing the use of the fireplace. Young  
children should be carefully supervised  
when they are in the same area as a hot  
termination  
6
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
Gas Pressure  
Orifice Sizes - Sea Level to High Altitude  
GENERAL INFORMATION  
(All Models): These appliances are tested and  
approvedforinstallationsatelevationsof0-4500  
feet (0-1372 meters) above sea level using the  
standard burner orifice sizes (marked with an  
"*" in Table 4).  
Thereplacemodelscoveredinthismanualare  
direct-vent, sealed combustion gas fireplaces  
designed for residential application. Direct-  
vent appliances operate with the combustion  
chamber completely isolated from the indoor  
environment.  
Tables 2 and 3 show the appliances' gas pres-  
sure requirements.  
Inlet Gas Supply Pressure  
(all models)  
Forhigherelevations,contactyourgassupplier  
or qualified service technician.  
Fuel #  
Minimum  
Maximum  
All air for combustion is brought in from the  
outside and exhaust gases are vented through  
the same direct-vent, co-axial (intake/exhaust)  
vent system.  
Installtheapplianceaccordingtotheregulations  
of the local authorities having jurisdiction and,  
in the USA, the National Fuel Gas Code NFPA  
54 / ANSI Z223.1 - latest edition or, in Canada,  
the CAN/CSA-B149.1- latest edition.  
5.5" WC  
(1.37 kPa)  
10.5" WC  
(2.61 kPa)  
Natural Gas  
11.0" WC  
(2.74 kPa)  
13.0" WC  
(3.23 kPa)  
Propane  
The Millivolt appliances are designed to oper-  
ate on either natural or propane gas and have  
a millivolt gas control valve with piezo ignition  
system.  
Table 2  
Burner Orifice Sizes  
Elevation 0-4500 feet ( 0-1372 meters)  
Manifold Gas Supply Pressure  
(all models)  
TheElectronicappliancesaredesignedtooper-  
ateonnaturalgasonlyandcontainanelectronic  
intermittent pilot system. External electrical  
power is required to operate these units.  
Model  
Nat.Gas  
Propane  
Fuel #  
Low  
High  
drill size (inches)  
drill size (inches)  
Natural (Lo) 2.2" WC  
(Hi) 3.5" WC  
(0.87 kPa)  
LSM40-2 0.1405" (#28)* 0.086" (#44)*  
• H2286  
• H2287  
Gas  
(0.55 kPa)  
These appliances comply with National Safety  
Standards and are tested and listed by OMNI-  
TestLaboratories,Inc.(ReportNo.116-F-22-5)  
toANSIZ21.50(inCanada,CSA-2.22),andCAN/  
CGA-2.17-M91 in both the USA and Canada as  
vented gas fireplaces.  
LSM45-2 0.161" (#20)* 0.093" (#42)*  
(Lo) 6.3" WC (Hi) 10.0" WC  
(1.57 kPa) (2.49 kPa)  
Propane  
• H2288  
• H4816  
* Standard size installed at factory  
• Part /Cat. Number  
Table 4  
Table 3  
Test gauge connections are provided on the  
front of the millivolt and electronic gas control  
valve, identified IN for the inlet and OUT for the  
manifold side (see Figures 2 and 3 on Page 8).  
The control valves have a 3/8" (10 mm) NPT  
thread inlet and outlet side of the valve.  
Deration  
At higher elevations, the amount of BTU fuel  
valuedeliveredmustbereducedbyeitherusing  
gas that has been derated by the gas company  
or by changing the burner orifice to a smaller  
size as regulated by the local authorities having  
jurisdiction and by the (USA) National Fuel Gas  
Code NFPA 54/ANSI Z223.1 - latest edition or,  
in Canada, the CAN/CSA-B149.1 codes - latest  
edition.  
TheInstallationmustconformtolocalcodesor,  
in the absence of local codes, with the National  
Fuel Gas Code, ANSI Z223.1/NFPA 54 - latest  
edition, or the Natural Gas and Propane Instal-  
lation Code, CSA B149.1 - latest edition. The  
appliance, when installed, must be electrically  
grounded in accordance with local codes or, in  
the absence of local codes, with the National  
Electrical Code, ANSI/NFPA 70 - latest edition,  
or the Canadian Electrical Code, CSA C22.1 -  
latest edition.  
These appliances must be isolated from  
thegassupplypipingsystem(byclosing  
their individual manual shut-off valve)  
during any pressure testing of the gas  
supply piping system at test pressures  
equal to or less than 1/2 psig (3.5 kPa).  
Burn-in Period  
During the first few fires of this appliance there  
will be some odor due to the curing of the  
paint and burning off of lubricants used in the  
manufacturing process. Depending on your  
use, the burn-in period may take a few hours  
or a few days.  
BTU Input  
These appliances and their individual  
shut-off valves must be disconnected  
from the gas supply piping system dur-  
ing any pressure testing of that system  
at pressures greater than 1/2 psig (3.5  
kPa).  
Millivolt and electronic models come standard  
with a manually-modulated gas valve; flame  
appearance and heat output can be controlled  
at the gas valve. The BTU Input for these ap-  
pliances are shown in Table 1.  
KEEP YOUR HOUSE WELL VENTILATED  
DURING THE CURING PROCESS. THE ODOR  
AND HAZE EMITTED DURING THE CURING  
PROCESS CAN BE QUITE NOTICEABLE AND  
MAY SET OFF A SMOKE DETECTOR.  
Input (BTU/HR) - All Models  
Natural Gas  
Propane Gas  
NOTICE: A white film may develop  
on the glass enclosure panel during  
the first few fires as part of the burn-in  
process.  
Model  
No.  
Input  
(BTU/Hr)  
Model  
No.  
Input  
(BTU/Hr)  
40,000 to  
50,000  
40,000 to  
50,000  
LSM40-2  
LSM40-2  
The first few times you use the  
fireplace, cleantheglassaftereachuse  
(AFTER THE GLASS HAS COMPLETELY  
COOLED); otherwise, the white film  
will bake onto the glass and become  
difficult to remove.  
47,000 to  
60,000  
48,000 to  
60,000  
LSM45-2  
LSM45-2  
Table 1  
See glass cleaning instructions on  
Page 9.  
7
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
OPERATION AND CARE OF YOUR APPLIANCE  
Note:Topreventexcessiveresistanceinburner  
circuit(whichcancauseburneroperationprob-  
lems), only one burner control switch should  
be wired to valve.  
WARNING  
Young children should be carefully supervised when they are in the  
same room as the appliance. Toddlers, young children and others  
may be susceptible to accidental contact burns. A physical barrier is  
recommended if there are at risk individuals in the house. To restrict  
access to a fireplace or stove, install an adjustable safety gate to keep  
toddlers, young children and other at risk individuals out of the room  
and away from hot surfaces.  
Inlet Pressure  
Port  
Main Gas  
Control Kno  
O
I
T
P
O
F
O
N
F
ti  
Manifold  
Pressure Port  
H
W
I
O
L
I
AVERTISSEMENT  
Pilot Adjust  
Screw  
Lesjeunesenfantsdevraientêtresurveillésétroitementlorsqu’ilssetrou-  
ventdanslamêmepiècequel’appareil.Lestoutpetits,lesjeunesenfants  
ou les adultes peuvent subir des brûlures s’ils viennent en contact avec  
la surface chaude. Il est recommandé d’installer une barrière physique  
si des personnes à risques habitent la maison. Pour empêcher l’accès  
à un foyer ou à un poêle, installez une barrière de sécurité; cette mesure  
empêchera les tout petits, les jeunes enfants et toute autre personne à  
risque d’avoir accès à la pièce et aux surfaces chaudes.  
Variable Flame  
Height Adjustment  
TPTH  
TP  
TH  
Figure 2 - SIT Millivolt Gas Valve  
Gas Supply Inlet  
Gas Controls / Control Compartment  
Access  
Operation And Care Of Your Appliance  
Inlet Pressure  
Gauge Port  
Operation of millivolt and electronic gas con-  
trol systems are different. Before lighting and  
operatingyourappliancedetermineifyouhave  
a millivolt or electronic appliance. Familiarize  
yourself with the gas control valve that your  
appliance uses. Refer to Figure 1 for access  
to the gas control valve.  
Hi / Lo  
Thegascontrolscanbefoundontherighthand  
side of the appliance as shown in Figure 1.  
Variable Flame  
Height  
Adjustment  
The standard controls for appliance operation  
arelocatedbehindthepanelontherightsideas  
shown in Figure 1. Optional control switches  
are also available (see Page 16 - remote wall  
switch, remote control or wall thermostat).  
Manifold  
Pressure  
Gauge Port  
Millivolt Appliances - Appliances with  
Millivolt systems will be fitted with the gas  
control valve shown in Figure 2.  
Right Side  
Modesty Panel  
Electronic Appliances - Appliances with  
electronic systems will be fitted with the  
electronic valve shown in Figure 3.  
Pilot  
Adjustment  
Screw  
Access Plate  
To light the appliance refer to the detailed  
lighting instructions (see Pages 18 and 19  
for millivolt models and Pages 20 and 21 for  
electronic models). The appliance lighting  
instructions may also be found on the pull out  
lighting instruction labels attached to the gas  
control valve.  
Gas Outlet to Burner  
Figure 3 - SIT Electronic Gas Valve  
Hi-Lo  
Extension Knob  
Gas Valve  
Variable Flame Height Adjustment  
(Millivolt And Electronic Appliances)  
ON/OFF Switch  
TheseappliancearettedwithanON/OFFrocker  
switchforapplianceON/OFFcontrol.See Figure  
1 for its location. Once the pilot is lit, the ON/  
OFFrockerswitchwillcontroltheapplianceON/  
OFF operation. To operate: Toggle the switch  
between its ON and OFF positions.  
All millivolt and electronic appliances are  
equippedwithavariablegascontrolvalve.Flame  
heightforthesemodelsmaybeadjustedthrough  
a range between fixed low and high settings,  
alternately, while the appliance is in operation.  
Use the extension knob (refer to Figure 1), to  
adjust the flame height as desired by sliding  
the knob over the variable flame adjustment  
knob located on the front of the valve (refer  
to Figures 1, 2 and 3). Replace the extension  
knob back to the hanger after the adjustment.  
Control  
Compartment  
Access  
Piezo  
Igniter  
If your appliance is equipped with an optional  
remote switch kit, wall switch, remote control  
or wall thermostat, (millivolt models pilot must  
belit),theappliancemainburnermaybeturned  
on and off using the optional switch.  
Figure 1  
8
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
Replacing Logs  
Note: Cleanglassafterrsttwoweeksofopera-  
tion (after Burn-In period is over) and then only  
when necessary and when the fireplace is cool.  
Wipe surface with clean, dampened, soft cloth.  
Follow with a dry, soft towel as desired. Take  
care not to scratch the glass surface.  
MAINTENANCE  
If the logs become damaged by accident or  
improper handling and need replacement, use  
only the proper replacement logs from manu-  
facturer (see Pages 25 and 26 for ordering  
information).  
(See Maintenance Schedule, Page 22)  
Refer to the maintenance schedule for  
maintenance tasks, procedures, frequency and  
by whom they should be performed. Always  
verify proper operation of the appliance after  
servicing.  
IMPORTANT: Do not use abrasive clean-  
ers on glass. Never clean the glass when  
it is hot.  
Re-install Embers, Vermiculite, Volcanic  
stone and Logs  
Carefully follow placement instructions on  
Pages 11 and 12). All logs should fit onto  
corresponding pins and/or log stoppers. This  
willensureaproperameandsafecombustion.  
The viewing glass should be cleaned periodi-  
cally to remove any build-up caused from the  
following:  
WARNING  
Turnoffgasandelectricalpower  
to the fireplace and allow it to  
coolbeforecleaningorservicing  
the appliance.  
• During start-up, it is normal for condensa-  
tion to form on the inside of the glass (this  
condensation and fog will usually disappear  
in a few minutes). The moisture can cause  
lint,dustandotherairborneparticlestocling  
to the glass surface.  
• Initial curing of the high temperature paint  
and burning off of lubricants used in the  
manufacturing process may result in a film  
on the glass.  
• A white coating may form on the glass as a  
result of impurities and minerals in the fuel.  
Inspect Wiring  
Refer to wiring diagrams on Page 15.  
CAUTION:Wearglovesandsafety glasses  
for protection while doing required  
maintenance.  
CAUTION: Label all wires prior to discon-  
nection when servicing controls. Wiring  
errorscancauseimproperanddangerous  
operation. Verify proper operation after  
servicing.  
Verify proper operation after servicing.  
S'assurer que l'appareil fonctionne adé-  
quatement une fois l'entretien terminé.  
ATTENTION: Aumomentdel'entretiendes  
commandes, étiquetez tous les fils avant  
delesdébrancher. deserreursdecáblage  
peuvent entraîner un fonctionnement  
inadéquat et dangereux.  
It is recommended that the glass be cleaned  
two or three times during each heating season,  
depending on the circumstances present. The  
following cleaning solutions are approved for use  
to clean glass:  
Always turn off gas to the pilot (millivolt  
appliances) before cleaning. Before re-  
lighting, refer to the lighting instructions  
inthismanual.Instructionsarealsofound  
on a pull-out panel located in the control  
compartment.  
Inspect and clean all wire connections. Ensure  
that there is no melting or damage. Inspection  
should include:  
• Non-ammonia based household cleaner  
• 50%-50% mix of white vinegar & water  
• Gas fireplace/stove glass cleaner  
• Terminals at the Valve  
• OFF/ON Switch  
• (Optional Control Switch) Wall Thermostat,  
Remote Control or Remote Wall Switch  
Before re-lighting the fireplace, refer  
to the lighting instructions in this  
manual. Instructions are also found on  
pull-out panels located in the control  
compartment.  
Inspect Glass Gasket - Visually inspect the  
gasket on the backside of the glass enclosure  
panels. The gasket surface must be clean, free  
of irregularities and seated firmly.  
Inspect Burner Flame Appearance  
Inspect Venting System  
Ensure that the burner flame appearance  
resembles the flame shown in Figures 13 and  
14 and as described in Flame Appearance and  
Sooting on Page 13. The Homeowner must  
contact a qualified service technician at once  
if any abnormal condition is observed.  
Clean Control Compartment  
The appliance and venting system should be  
thoroughly inspected before initial use and  
at least annually by a qualified service techni-  
cian (inspection should include ensuring that  
exhaust or intake passages are unobstructed  
and vent components are properly assembled  
and not damaged). Homeowner must contact  
a qualified service technician at once if any  
abnormal condition is observed.  
Keepcontrolcompartmentcleanbyvacuuming  
or brushing at least twice a year. More frequent  
cleaning may be required due to excessive lint  
from carpeting, bedding materials, etc. It is  
important that control compartments, burners  
andcirculatingairpassagewaysoftheappliance  
be kept clean.  
Small Area Paint Touch-up  
Only use a factory supplied paint kit for touch-  
ups. Paint is available at your local authorized  
Lennox Hearth Products dealer. Never attempt  
to paint a hot fireplace.  
Clean Logs and Burner  
If the venting system is disassembled for any  
reason, a qualified service technician should  
follow vent installation instructions for proper  
reassembly and proper sealing of the venting  
system components. However, more frequent  
periodic inspections and cleanings should be  
performed by the homeowner.  
Carefully remove the logs (use care when han-  
dlingtheberlogs,astheybecomequitefragile  
after curing). Vacuum out any foreign matter  
(lint, carbon, etc.) on the burner. Ensure the  
burner ports are “open.” Remove any carbon  
deposits from the under side of the logs using  
a vacuum cleaner, or a soft bristled brush (i.e.  
paint brush).  
If the surface later becomes stained or marred,  
it may be lightly sanded and touched up with  
spray paint.  
Glass Cleaning  
Note: Improper positioning of logs can create  
carbon build-up and will alter the performance  
of the appliance.  
(SeeFrontGlassEnclosurePanel, Removaland  
Installation on Page 10).  
9
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
To install the front glass door assembly,  
proceed as follows:  
Front Glass Enclosure Panel, Removal  
and Installation  
WARNING  
Any safety screen or guard  
removed for servicing the appli-  
ance must be replaced prior to  
operating the appliance.  
1. Retrieve the glass door assembly. Visually  
inspect the gasket on the backside of the  
panel. The gasket surface must be clean,  
free of irregularities and seated firmly.  
2. Positionthedoorframeinfrontoftherebox  
opening and engage the bottom flange over  
the rail at the bottom of the firebox opening.  
3. Swing the door up and back. Ensure the  
gasket seats evenly as the door draws shut.  
Engage the nut insert and fasten with two  
screws to secure the door.  
4. Installthedoormodestyshieldontopange  
glassdoorasfollows: grabthedoormodesty  
shield with both hands, with the open hem  
going down and engage it with the upper lip  
of the glass door frame by pushing it all the  
way down. Make sure the installed shield is  
firmly in place.  
WARNING  
When reinstalling the glass  
door, the door latch screws  
must be securely tightened  
to prevent the glass door  
from falling out, which could  
potentially cause damage and  
possible injury.  
Donotattempttosubstitutethe  
materials used on this door,  
or replace cracked or broken  
glass.  
Handlethisglasswithextreme  
care! Glass is susceptible to  
damage – Do not scratch or  
handleroughlywhilereinstall-  
ing the glass door frame.  
The glass door of this appli-  
ance must only be replaced  
as a complete unit as provided  
by the manufacturer. Do not  
attempt to replace broken,  
crackedorchippedglasssepa-  
rately.  
AVERTISSEMENT  
Tout écran ou protecteur retiré  
pour permettre l’entretien de  
l’appareil doit être remis en  
place avant de mettre l’appareil  
en marche.  
Only doors certified with the appliance  
shall be used.  
Seules des portes certifiées pour cet  
appareil doivent être utilisées.  
5. With the firescreen hanging on the screen  
rod, drop in the right side of the rod to the  
right modesty panel. Then drop in the left  
side of the rod through the slot of the left  
modesty panel. Make sure that the rod is  
supported by the bracket in the center of the  
fireplace.  
CAUTION: DO NOT abuse glass door by  
striking or slamming shut.  
These are direct-vent appliances. They are  
designed to operate only when the front glass  
enclosure panel is installed. Generally the front  
glass enclosure panel should not be removed  
except to gain access to the components within  
the firebox.  
Top Flange Glass Door  
Glass Door Latch (2)  
Frame Assembly  
Removing Glass Enclosure Panel  
(see Figure 4)  
Do not attempt to touch the  
frontenclosureglasswithyour  
hands while the fireplace is in  
use.  
To remove the firescreens, lift up the center of  
the rod to disengage it from the center bracket,  
bend down at center, hold left side with hand  
until it disengages from left side, being careful  
not to scratch paint. Slowly remove the rod  
from the right side.  
Screws  
WARNING  
Do not operate appliance with  
theglassfrontremoved,cracked  
or broken.  
Remove the door modesty shield from the top  
flangeglassdoorbypullingituprmlywithboth  
hands until it is disengaged. Using a phillips  
screwdriver, unfasten two (2) screws located  
at the top of the glass frame.  
Firebox Floor  
Glass Door Assembly  
AVERTISSEMENT  
Figure 4  
Tilt the glass frame at the top away from the  
unit. Lift it carefully off the bottom door track  
and set the door aside, protecting it from  
inadvertent damage.  
Ne pas utiliser l'appareil si le  
panneau frontal en verre n'est  
pas en place, est craqué ou  
brisé.  
10  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
LOG, VERMICULITE, VOLCANIC STONE AND GLOWING EMBER  
REFERENCE - Firebox Accessories / Parts  
PLACEMENT  
Cat. No.  
88L53  
80L42  
H3696  
Model  
FGE  
Description  
Bag of Glowing Embers  
Bag of Volcanic Stone  
Bag of Vermiculite  
WARNING  
FDVS  
DO NOT attempt to install the logs until the  
appliance installation has been completed, the  
gas line connected and tested for leaks and the  
initial burner operation has been checked out.  
The size and position of the log set was engi-  
neered to give the appliance a safe, reliable  
and attractive flame pattern. Any attempt to use  
a different log set in the fireplace will void the  
warranty and will result in incomplete combus-  
tion, sooting, and poor flame quality.  
Logs get very hot and will remain hot up to one  
hour after gas supply is turned off. Handle only  
when logs are cool. Turn off all electricity to  
the appliance before you install grate, volcanic  
stone, vermiculite, embers and logs.  
Figure 5  
This appliance is not designed to burn wood.  
Any attempt to do so could cause irreparable  
damage to the appliance and prove hazardous  
to your safety.  
For Propane Gas Only, Do Not Place Embers On Main Ports  
If logs are not installed according to the log  
installationinstructions,ameimpingementand  
impropercombustioncouldoccurandresultinsoot  
and/or excessive production of carbon monoxide  
(CO), a colorless, odorless, toxic gas.  
Step 1. Install the ceramic panels, if necessary, per the instructions  
provided in kit (reference form #750182M).  
Step 2. Place a mixture of volcanic stone and vermiculite around the  
Glowing Embers (Rockwool)  
burner as shown in Figure 7.  
Figure 6  
Step 3. Separatetheglowingembers(rockwool)intopiecesaboutthesize  
of a quarter (see Figure 5). Keep the pieces fluffed, not matted.  
Distribute these pieces over the burner as shown in Figure 6.  
Do not use more than necessary. When properly positioned,  
the Glowing Embers will cover approximately 75% of the burner  
on natural gas. For propane gas, do not place embers on main  
ports.  
Note: Excessive use of embers may result in sooting or poor flame.  
This appliance is provided with enough Glowing Embers for several  
applications, do not feel compelled to use all that is in a new bag. For  
best glowing effect, replace the ember material annually. Replacement  
Glowing Embers are available (Catalog Number 88L53).  
Step 4. Position the individual logs as shown in Figures 8 through 12.  
Logs should be placed in the order shown. Place logs 2 and 3  
against the pins on the grate, NOT over them.  
Mixture Of Volcanic Stone And Vermiculite  
Figure 7 - (LSM45-2 Shown)  
Proper log and twig placement is critical to encourage outstand-  
ing flame appearance and prevent sooting. When positioned  
properly as shown, twigs will be positioned between flame  
peaks and will not impinge any flames. Positioning is the same  
for all colors of log sets.  
11  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
LSM40-2 & LSM45-2 Log Placement  
2
3
5
2
4
6
1
7
Align Groove At The Bottom Of Log (2) Over  
The Grate And Push It Towards The Rear.  
Figure 10  
Log Number  
Description  
1
2
3
4
5
6
7
Log, Center  
Log, Rear  
Log, Center/Left  
Log, Center/Right  
Log, Rear/Top  
Log, Front/Left  
Log, Front/Center  
3
4
Figure 8  
Engage Logs (3 & 4) With The Grate Pins And Align Groves At  
The Bottom Of The Logs Over The Grate.  
1
Figure 11  
Align Hole At Bottom Of Log (5)  
Over The Pin On Log (2).  
7
6
5
2
Align Two Holes At Bottom Of Log (1)  
Over The Pins On The Gas Burner.  
Figure 9  
Engage Log (6) With The Grate Pin  
And Align Groove At The Bottom Of  
The Log Over The Grate.  
Engage Log (7) With  
The Pin On Log (4).  
4
Figure 12  
12  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
BURNER ADjUSTMENTS  
(QUALIFIED TECHNICIANS ONLY)  
(Birch Logs Shown) LSM40-2  
Flame Appearance and Sooting  
Proper flame appearance is a flame which is  
blueatthebaseandbecomesyellowish-orange  
in the body of the flame. When the appliance  
is first lit, the entire flame may be blue and will  
graduallyturnyellowish-orangeduringtherst  
15 minutes of operation. After 15 minutes of  
operation, if the flame is blue, or if the flame is  
orange with evidence of sooting (black tip), the  
air shutter opening may need to be adjusted.  
If the air shutter opening is closed too far,  
sooting may develop. Sooting is indicated  
by black puffs developing at the tips of very  
long orange flames. Sooting results in black  
deposits forming on the logs, appliance inside  
surfaces and on exterior surfaces adjacent to  
the vent termination.  
Sooting is caused by incomplete combus-  
tion in the flames and lack of combustion air  
entering the air shutter opening. To achieve a  
warm yellowish-orange flame with an orange  
Figure 13 - Burner Flame Appearance  
body that does not soot, the shutter opening  
must be adjusted between these two extremes.  
Air Shutter Adjustment Guidelines  
(Rustic Oak Logs Shown) LSM45-2  
• If there is smoke or soot present, first check  
the log set positioning to ensure that the  
flames are not impinging on any of the logs.  
If the log set is properly positioned and a  
sooting condition still exists, then the air  
shutter opening should be increased.  
• Themoreoffsetsintheventsystem,thelarger  
the air shutter opening will need to be.  
• An appliance operated with the air shutter  
openedtoofar, mayhaveamesthatappear  
blue and transparent. These weak, blue and  
transparent flames are termed anemic.  
• Propane models may exhibit flames which  
candle or appear stringy. If this is present  
and persists, adjust the air shutter to a more  
closed position, then operate the appliance  
for a few more minutes to ensure that the  
flame normalizes and the flames do not  
appear sooty.  
Figure 14 - Burner Flame Appearance  
The following chart is provided to aid you in  
achieving the correct air shutter adjustment for  
your installation.  
Air Shutter Adjustment Guidelines:  
Amount of  
Primary Air  
Flame  
Color  
Air Shutter  
Adjustment  
If air shutter is  
closed too far  
Flame will Air shutter  
be orange gap should be  
increased  
If air shutter is  
open too far  
Flame will Air shutter  
be blue gap should be  
decreased  
13  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
Burner Air Shutter Adjustment Procedure  
SIT MILLIVOLT PILOT ASSEMBLY  
Proper Pilot Flame Appearance  
Pilot Hood  
Igniter Rod  
WARNING  
Air Shutter  
Opening  
Air shutter adjustment should  
only be performed by a quali-  
fied professional service  
technician.  
Ensure that the front glass  
door assembly is in place and  
sealed After adjustment.  
Thermocouple  
3/8" Min.  
(9 mm)  
Venturi  
Orifice  
Gas Valve  
Pilot  
Nozzels  
Burner  
Thermopile  
Figure 16  
CAUTION  
Soot will be produced if the air  
shutter is closed too much. Any  
damageduetocarboningresult-  
ing from improperly setting the  
air shutter is not covered under  
the warranty.  
Electronic Appliance Checkout  
To light the burner, refer to the lighting instruc-  
tions on Page 20. Ensure the igniter lights the  
pilot. The pilot flame should engulf the flame  
sensor as shown in Figure 17.  
Venturi  
Main Burner Factory Air Shutter  
Opening Setting - Inches (millimeter)  
Model  
LSM40-2  
LSM45-2  
Nat.Gas Propane Gas  
The following paragraphs address burner  
adjustment concerns and procedures.  
1/16 (1.59)  
1/16 (1.59)  
9/32 (7.14)  
9/32 (7.14)  
ELECTRONIC PILOT ASSEMBLY  
Proper Pilot Flame Appearance  
Whenlitforthersttime,thisappliancewillemit  
a slight odor for an hour or two. This is due to  
the “burn-in” of internal paints and lubricants  
used in the manufacturing process.  
Pilot Hood  
Igniter  
Rod  
Figure 15  
Flame  
Sensor  
Millivolt Appliance Checkout  
Adjustment  
To adjust the flame, move the adjustment air  
shutter (located on the lower venturi) back or  
forward to increase or reduce the air shutter  
opening, respectively. Position the air shut-  
ter to the factory setting as shown in Figure  
15. Allow the burner to operate for at least 15  
minutes. Observe the flame continuously. If it  
appearsweakorsootyaspreviouslydescribed,  
adjusttheairshutteruntiltheameappearance  
is as desired.  
The pilot flame should be steady, not lifting  
or floating. Flame should be blue in color with  
traces of orange at the outer edge.  
Pilot  
The top 3/8" (10 mm) at the pilot generator  
(thermopile) and the top 1/8" minimum (tip)  
of the quick drop out thermocouple should be  
engulfed in the pilot flame. The flame should  
project 1" (25 mm) beyond the hood at all three  
ports (see Figure 16).  
Nozzels  
Figure 17  
To light the burner, refer to the lighting instruc-  
tions on Page 18.  
Propane models may exhibit a flame pattern  
that may candle or appear stringy. If this is  
problematic or persists as the appliance is  
continually operated, adjust the air shutter  
open as described in the previous paragraphs.  
Operatetheapplianceforaperiodoftimeasthe  
effect diminishes, ensuring that the appliance  
does not develop sooty flames.  
When satisfied that the appliance operates  
properly,proceedtonishtheinstallation.Leave  
the control knob in “ON” position and turn the  
remote switch “OFF.”  
14  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
If you encounter any problems or have any  
questions concerning the installation or ap-  
plication of this system, please contact your  
dealer or distributor.  
ORDERING REPLACEMENT PARTS  
PRODUCT REFERENCE INFORMATION  
A complete parts list is found at the end of  
this manual. Use only parts supplied from the  
manufacturer.  
We recommend that you record the important  
reference information about your fireplace in  
the space provided below.  
LENNOX HEARTH PRODUCTS  
1508 Elm Hill Pike, Suite 108  
Nashville, TN 37210  
1-800-9-LENNOX  
Withpropercareandmaintenance, yourappli-  
ance will provide many years of enjoyment. If  
you should experience any problem, first refer  
to the troubleshooting guide in this manual. If  
problem persists, contact your Lennox Hearth  
Products dealer or distributor.  
Please call Lennox Hearth Products for the  
phone number of your nearest Lennox Hearth  
Productsdealerwhowillansweryourquestions  
or address your concerns.  
Normally, all parts should be ordered through  
your Lennox Hearth Products distributor or  
dealer. Parts will be shipped at prevailing prices  
at time of order.  
Fireplace Model Number ________________________________________________  
Fireplace Serial Number_________________________________________________  
Date Installed_________________________________________________________  
Type of Gas Used in Fireplace ____________________________________________  
Dealer Name _________________________________________________________  
When ordering repair parts, always give the  
following information:  
1. The model number of the appliance.  
2. The serial number of the appliance.  
3. The part number.  
4. The description of the part.  
5. The quantity required.  
6. The installation date of the appliance.  
ATTENTION: AU MOMENT DE  
L'ENTRETIEN DES COMMANDES,  
ÉTIQUETEZTOUSLESFILSAVANTDE  
LES DÉBRANCHER. DES ERREURS  
DE CÁBLAGE PEU-VENT ENTRAÎNER  
UN FONCTIONNEMENT INADÉQUAT  
ET DANGEREUX.  
CAUTION:LABELALLWIRESPRIORTO  
DISCONNECTION WHEN SERVICING  
CONTROLS. WIRING ERRORS CAN  
CAUSEIMPROPERANDDANGEROUS  
APPLIANCE OPERATION.  
WIRING DIAGRAMS  
Wiringdiagramsareprovidedhereforreference  
purposesonly. Thisinformationisalsoprovided  
onschematicsattacheddirectlytotheappliance  
on a pullout panel located within the control  
compartment.  
WHITE  
ELECTRONIC  
If any of the original wire as supplied must be replaced,  
it must be replaced with Type AWM 105 C – 18 GA. wire.  
WIRING DIAGRAM  
120 VAC  
EV2  
EV1  
PILOT BURNER  
IGNITER-SENSOR  
ASSEMBLY  
Black  
White  
Ground  
GAS VALVE  
BLUE (20)  
GROUND  
Thermopile  
Junction Box  
CONNECTOR  
Field Wired  
Factory Wired  
BLK  
BLACK (20)  
TRANSF  
W
120 V.  
APPLIANCE-MOUNTED ON/OFF SWITCH  
WHITE (6)  
*OR OPTIONAL WALL-MOUNTED ON/OFF SWITCH OR  
OPTIONAL REMOTE CONTROL RECEIVER  
GREEN LED  
24 V.  
*Turn the appliance-mounted ON/OFF burner control switch  
to the OFF position if an optional  
APPLIANCE MOUNTED  
ON/OFF SWITCH  
control switch is installed.  
BLACK (16)  
Schematic Representation Only  
ELECTRONIC IGNITION  
CONTROL BOARD  
Figure 18 - Millivolt Wiring Diagram  
*WALL MOUNTED ON/OFF SWITCH (OPTIONAL)  
OR REMOTE CONTROL RECEIVER  
*Turn The Appliance-Mounted ON/OFF Burner Control Switch  
To The OFF Position If An Optional Control Switch Is Installed  
FACTORY WIRED  
FIELD WIRED  
Figure 19 - Electronic Wiring Diagram  
15  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
Bag of Glowing Embers  
Bag of Volcanic Stone  
Bag of Vermiculite  
Product Reference Information  
Cat.  
No.  
Fireplace  
Model  
Ship.  
Wt.  
Ship.  
Volume  
H4793  
H4794  
H4797  
H4795  
H4796  
H4798  
LSM40MN-2  
LSM40MP-2  
LSM40EN-2  
LSM45MN-2  
LSM45MP-2  
LSM45EN-2  
261 lb.  
268 lb.  
307 lb.  
307 lb.  
307 lb.  
307 lb.  
45.8 cu. ft.  
45.8 cu. ft.  
57.1 cu. ft.  
57.1 cu. ft.  
57.1 cu. ft.  
57.1 cu. ft.  
Replacement ember material, volcanic stone and  
vermiculiteareavailableforusewiththeseappliances.  
Orderthemtoreplacematerialsaspartoftheperiodic  
maintenance of the appliance.  
Firebox Accessories  
Cat. No. Model  
Description  
Standard Remote Control System  
88L53  
80L42  
H6319  
FGE  
FDVS  
--  
Bag of Glowing Embers  
Bag of Volcanic Stone  
Bag of Vermiculite  
The Model RCL (Standard) Remote Control System,  
features a simplistic OFF/ON control function for the  
fireplace. Thismodelincludesahand-heldtransmitter,  
a remote receiver with wall-mount cover plate and  
all hardware required to install the unit. The remote  
receiver can be wall or hearth mounted.  
ACCESSORY COMPONENTS  
(FDVS Instruction P/N 750010M)  
The transmitter has ON and OFF functions that are  
activated by pressing either button on the face of  
the transmitter. When a button on the transmitter  
is pressed, a signal light illuminates briefly to verify  
that a signal has been sent.  
Touch-Up Paint Kit  
Repair of minor scratches and  
discoloration of the appliances  
black painted surfaces may be  
accomplishedwiththetouch-up  
paint kit.  
I
The Model RCL is designed to operate with all mil-  
livolt ignition systems, as well as electronic ignition  
systems. It may be installed with use for either  
natural gas or propane gas appliances. The RCL  
offers ease of installation and allows you to execute  
on-off commands to the fireplace effortlessly with  
one simple motion.  
Touch-Up Paint (Black) Kit  
Cat. No.  
90L73  
Model  
Description  
TheModelRCLcomescompletewithdetailedoperat-  
ing instructions.  
FTPK-B  
Black Paint Kit  
Digital Wall Thermostat  
(ref. Instruction P/N 750050M)  
Remote Control Kit, Standard  
The wall thermostat kit provides temperature control  
for optimum comfort.  
Cat. No.  
H0249  
Model No.  
RCL  
Description  
Remote Control System  
(Standard)  
Wall Thermostat, Millivolt  
(ref. Instruction P/N 750127M)  
Cat. No.  
H4635  
Model No.  
DWTK  
Description  
Wall Thermostat Kit,  
White  
Flame Modulating Remote Control  
Flame Modulating Remote Controls were developed  
to provide a safe, reliable and user-friendly remote  
controlsystemforappliancesequippedwithaMillivolt  
Gas Valve. A detailed set of instructions are included  
with each remote.  
ON/OFF Wall Switch Kit  
TheON/OFFwallswitchkitmaybeusedtocontrolthe  
operation of the fireplace burner as an alternative to  
the unit mounted ON/OFF switch. Install the ON/OFF  
wallswitchinaconvenientlocationnearthereplace.  
Flame Modulating Remote Control Kits  
Cat. No.  
H0301  
H0302  
Model No.  
RCL-MN  
RCL-ML  
Description  
Natural Gas  
Propane Gas  
ON/OFF Wall Switch Kit  
(ref. Instruction P/N 750130M)  
Cat. No.  
85L87  
Model  
FWSK  
Description  
Wall Switch  
16  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
Log Sets  
Dual Arch Screen Kits  
ACCESSORY COMPONENTS  
(continued)  
These Dual Arch screen kits can be installed  
on the glass enclosure panel to help prevent  
directhumancontactwiththehotglasssurface.  
Choose from two finely crafted log sets with  
detailing that replicates the natural look of  
real wood.  
Brick Liner Kits  
Thebrickpanellinerkitsincludeceramicpanels  
of the side and rear walls. The panels have  
brick-like features in relief.  
(ref. Instruction P/N 750184M)  
Birch Logs  
Dual Arch Screen Kits  
Brick Liner Kits  
LSM40-2  
Cat. #  
Model  
Description  
H5051 DASK-LSM40-2 Dual Arch Screen  
H5054 DASK-LSM45-2 Dual Arch Screen  
H2219 BLKR-LSM40  
Buff Rustic  
H4801 BLK-REDR-LSM40 Red Rustic  
H2220 BLKH-LSM40  
Buff Herringbone  
Arch Screen Kits  
H4803 BLK-REDH-LSM40 Red Herringbone  
These Arch Screen kits can be installed on the  
glass enclosure panel to help prevent direct  
human contact with the hot glass surface.  
H2221 BLKC-LSM40  
H2222 BLKB-LSM40  
Red Old Cottage  
Black  
Rustic Oak  
LSM45-2  
BLKR-LSM45  
Log Sets  
H2223  
H2224  
H2225  
H2226  
Buff Rustic  
Cat. No.  
Model  
Description  
BLKH-LSM45  
BLKC-LSM45  
BLKB-LSM45  
Buff Herringbone  
Red Old Cottage  
Black  
LSM40-2 and LSM45-2  
H4799  
H4800  
LOG-OAK-LSM-2  
LOG-BIR-LSM-2  
Oak Log Set  
Birch Log Set  
H4802 BLK-REDR-LSM45 Red Rustic  
H4804 BLK-REDH-LSM45 Red Herringbone  
(ref. Instruction P/N 750182M)  
(ref. Instruction P/N 750184M)  
Barrier Screen Kits  
Arch Screen Kits  
These Barrier Screen Panel kits can be installed  
on the glass enclosure panel to help prevent  
directhumancontactwiththehotglasssurface.  
Andiron Door Kits  
Cat. No.  
H5053  
H5056  
Model  
Description  
ASK-LSM40-2 Arch Screen Kit  
ASK-LSM45-2 Arch Screen Kit  
The andiron kits attach to the grate assembly  
without the use of hardware.  
Classic Screen Kits  
These Screen kits can be installed on the glass  
enclosure panel to help prevent direct human  
contact with the hot glass surface.  
Barrier Screen Kits  
MISSION  
CLASSIC  
Cat. No.  
H4805  
H4806  
Model  
LSM40-2  
BSK40  
LSM45-2  
BSK45  
Description  
Barrier Screen  
Barrier Screen  
Andiron Door Kits  
Catalog No. (Model)  
(ref. Instruction P/N 750184M)  
Fits  
Fireplace  
Models  
Classic Screen Kits  
Mission  
Classic  
Cat. No.  
H5052  
H5055  
Model  
Description  
LSM40-2 &  
LSM45-2  
H2227  
(AKM-LSM)  
H2228  
(AKC-LSM)  
SK-LSM40-2 Classic Screen Kit  
SK-LSM45-2 Classic Screen Kit  
(ref. Instruction P/N 750184M)  
(ref. Instruction P/N 750183M)  
17  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
LIGHTING INSTRUCTIONS – MILLIVOLT GAS VALVE  
FOR YOUR SAFETY READ BEFORE LIGHTING  
WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION  
MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INjURY OR LOSS OF LIFE.  
A. This appliance has a pilot which must be lighted with a piezo  
igniter. When lighting the pilot, follow these instructions  
exactly.  
Immediately call your gas supplier from a neighbor’s phone.  
Follow the gas supplier’s instructions.  
If you cannot reach your gas supplier, call the fire department.  
B. BEFORE LIGHTING smell all around the appliance area for gas.  
Be sure to smell next to the floor because some gas is heavier  
than air and will settle on the floor.  
C. Use only your hand to push in or turn the gas control knob.  
Never use tools. If the knob will not push in or turn by hand,  
do not try to repair it, call a qualified service technician. Force  
or attempted repair may result in a fire or an explosion.  
WHAT TO DO IF YOU SMELL GAS  
D. Do not use this appliance if any part has been under water.  
Immediately call a qualified service technician to inspect the  
appliance and to replace any part of the control system and  
any gas control which has been under water.  
Do not try to light any appliance.  
Do not touch any electric switch; do not use any phone in your  
building.  
LIGHTING INSTRUCTIONS  
1. STOP! Read the safety information above on this Page.  
2. Set the thermostat to the lowest setting, if applicable.  
3. Turn off all electric power to the appliance, if applicable.  
4. Remove the control access panel.  
7. Push in gas control knob slightly and turn counterclockwise  
to “PILOT.”  
8. Push in control knob all the way and hold in. Immediately light the  
pilot by triggering the spark igniter (pushing the button) until pilot  
lights. Continue to hold the control knob in for about 1-1/2 minutes  
after the pilot is lit. Release knob and it will pop back up. Pilot should  
remain lit. If it goes out, repeat steps 5 through 8.  
5. Push in gas control knob slightly and turn clockwise  
to “OFF.”  
If knob does not pop up when released, stop  
and immediately call your service technician  
or gas supplier.  
I N  
O U T  
I
H
If pilot will not stay lit after several  
tries, turn the control knob to “OFF”  
and call your service technician or  
gas supplier.  
F
F
O
P
I
L
T
O
N
P
I
L
T O  
9. Turn gas control knob counterclockwise  
to “ON.”  
Note: Knob cannot be turned from “PILOT” to “OFF”  
unless the knob is pushed in slightly. Do not force.  
10. Close control access panel.  
6. Wait five (5) minutes to clear out any gas. Then smell  
for gas, including near the floor. If you smell gas, STOP!  
Follow “B” in the safety information above (to the left) on  
this label. If you don’t smell gas, go to the next step.  
11. If the appliance will not operate, follow the instructions "To Turn Off  
Gas To Appliance" and call your service technician or gas supplier.  
TO TURN OFF GAS TO APPLIANCE  
1. Set the thermostat to the lowest setting.  
4. Depress gas control knob slightly and turn clockwise  
to “OFF.” Do not force.  
2. Turn off all electric power to the appliance, if service is  
to be performed  
5. Close control access panel.  
3. Remove control access panel.  
18  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
INSTRUCTIONS D’ALLUMAGE – VANNE GAZ MILLIVOLT  
POUR PLUS DE SÉCURITÉ, LIRE AVANT D’ALLUMER  
AVERTISSEMENT. QUICONQUE NE RESPECTE PAS à LA LETTRE LES INSTRUCTIONS DANS LA PRÉSENTE NOTICE RISQUE  
DE DÉCLENCHER UN INCENDIE OU UNE EXPLOSION ENTRAÎNANT DES DOMMAGES, DES BLESSURES OU LA MORT.  
Appelez immédiatement votre fournisseur de gaz depuis un voisin.  
Suivez les instructions du fournisseur.  
A. Cet appareil est muni d’une veilleuse qui doit être allumée avec un  
allumeur piézo-électrique. Lorsque vous allumez la veilleuse, suivre  
exactement ces instructions.  
B. AVANT L’ALLUMAGE: Avant d’allumer la veilleuse, reniflez tout autour  
de l’appareil pour déceler une odeur de gaz. Reniflez près du plancher,  
car certains gaz sont plus lourds que l’air et peuvent s’accumuler au  
niveau du sol.  
Si vous ne pouvez rejoindre le fournisseur, appelez le service des  
incendies.  
C. Ne pousser ou tourner la manette d’admission du gaz qu’à la main. Ne  
jamais employer d’outil à cette fin. Si la manette reste coincée, ne ten-  
tez pas de la réparer; appelez un technicien qualifié. Quiconque tente  
de forcer la manette ou de la réparer peut provoquer une explosion ou  
un incendie.  
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ :  
D. N’utilisez pas cet appareil s’il a été plongé dans l’eau, même partielle-  
ment. Faites inspecter l’appareil par un technicien qualifié et remplacez  
toute partie du système de contrôle et toute commande qui ont été  
plongés dans l’eau.  
Ne pas tenter d’allumer d’appareil.  
Ne touchez à aucun interrupteur ; ne pas vous servir des télépho-  
nes se trouvant dans le bâtiment.  
INSTRUCTIONS D'ALLUMAGE  
1. ARRÊTEZ ! Lisez les instructions de sécurité sur la portion supéri-  
eure de cette étiquette.  
8. Enfoncez le bouton de réglage jusqu’au fond et gardez-le enfoncé.  
Allumez immédiatement la veilleuse en déclenchant l’allume-gaz  
à étincelle (en poussant le bouton) jusqu’à ce que la veilleuse  
s’enflamme. Continuez de tenir le bouton de réglage enfoncé pen-  
dant environ 90 secondes après l’allumage de la veilleuse. Relâ-  
chez le bouton et il sortira subitement. La veilleuse devrait rester  
allumée. Si elle s’éteint, répétez les étapes 5 à 8 inclusivement.  
2. Ouvrez le compartiment de contrôle du bas.  
3. Tournez l’interrupteur mural à la position d’arrêt “OFF”.  
4. Assurez-vous que la soupape d’arrêt de la canalisation principale est  
ouverte.  
5. Enfoncez légèrement le bouton de réglage du gaz et tournez-le dans  
le sens des aiguilles d’une montre  
d’arrêt “OFF”.  
jusqu’à la position  
Si le bouton ne sort pas automatiquement après avoir été relâché,  
arrêtez immédiatement et téléphonez à votre technicien de service  
ou à votre fournisseur de gaz.  
I N  
O U T  
Si la veilleuse refuse de rester al-  
lumée après plusieurs tentatives,  
tournez le bouton de réglage jusqu’à  
sa position d’arrêt “OFF” et télé-  
phonez à votre technicien de service  
ou à votre fournisseur de gaz.  
I
H
F
O
P
I
L
O
L
O
W
T
O
N
P
I
L
T O  
9. Tournez le bouton de réglage du gaz  
en sens inverse des aiguilles d’une  
montre  
jusqu’à sa position de marche “ON”.  
Remarque: Il est impossible de tourner le bouton de “PILOT” à “OFF” à  
moins qu’il ne soit légèrement enfoncé. Ne le forcez pas.  
10. Fermez le compartiment de contrôle du bas.  
6. Attendre cinq (5) minutes pour laisser échapper tout le gaz. Reniflez  
tout autour de l’appareil, y compris près du plancher, pour déceler  
une odeur de gaz. Si vous sentez une odeur de gaz, ARRÊTEZ ! Pas-  
sez à l’étape B des instructions de sécurité sur la portion supérieure  
(à gauche) de cette étiquette. S’il n’y a pas d’odeur de gaz, passez à  
l’étape suivante.  
11. Si l’appareil ne fonctionne pas, suivre les instructions intitulées  
“Pour fermer le gaz qui alimente l’appareil” et appeler un tech-  
nicien ou le fournisseur de gaz.  
7. Enfoncez légèrement le bouton de réglage du gaz et tournez-le en  
sens inverse des aiguilles d’une montre jusqu’à la position de veil-  
leuse  
“PILOT”.  
POUR FERMER LE GAZ QUI ALIMENTE L’APPAREIL  
1. Tournez l’interrupteur mural à la position d’arrêt “OFF”. La veilleuse  
4. Enfoncez légèrement le bouton de réglage du gaz et tournez-le dans  
restera allumée jusqu’au retour du service normal.  
le sens des aiguilles d’une montre  
jusqu’à la position  
d’arrêt “OFF”. Ne forcez pas le bouton.  
2. Pour une fermeture complète, tournez l’interrupteur mural à la posi-  
tion d’arrêt “OFF”.  
5. Fermez le compartiment de contrôle du bas.  
3. Ouvrez le compartiment de contrôle du bas.  
REMARQUE : LES SCHÉMAS ET LES ILLUSTRATIONS NE SONT PAS À L’ÉCHELLE  
19  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
OPERATING INSTRUCTIONS — ELECTRONIC  
FOR YOUR SAFETY READ BEFORE OPERATING  
WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION  
MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INjURY OR LOSS OF LIFE.  
A. This appliance is equipped with an ignition device which  
automatically lights the pilot. Do not try to light the pilot  
by hand.  
Immediately call your gas supplier from a neighbor’s  
phone. Follow the gas supplier’s instructions.  
If you cannot reach your gas supplier, call the fire depart-  
ment.  
B. BEFORE OPERATING smell all around the appliance area  
for gas. Be sure to smell next to the floor because some  
gas is heavier than air and will settle on the floor.  
C. If any portion of this appliance does not operate as the  
instructions indicate, do not try to repair it, call a qualified  
service technician. Do not use tools. Force or attempted  
repair may result in a fire or explosion.  
WHAT TO DO IF YOU SMELL GAS  
Do not try to light any appliance.  
D. Do not use this appliance if any part has been under  
water. Immediately call a qualified service technician  
to inspect the appliance and to replace any part of the  
control system and any gas control which has been under  
water.  
Do not touch any electric switch; do not use any phone  
in your building.  
OPERATING INSTRUCTIONS  
1. STOP! Read the safety information above on this Page.  
6. Wait five (5) minutes to clear out any gas. Then smell  
for gas, including near the floor. If you smell gas, STOP!  
Follow “B” in the safety information above (to the left) on  
2. Turn remote wall switch to "OFF" or set the thermostat to  
this label. If you don’t smell gas, go to the next step.  
lowest setting, if applicable.  
7. Turn "ON" all electrical power to appliance (remote wall  
3. Turn the ON/OFF switch to "OFF" if Step 2 is applicable,  
this ON/OFF switch should always be in the "OFF" posi-  
tion.  
switch), or set the thermostat to the desired setting, if ap-  
plicable.  
8. Turn the ON/OFF switch on the appliance to "ON", if  
4. Verify main line shut-off valve is open.  
Step 7 is not applicable.  
9. If the appliance will not operate, follow the instructions  
"To Turn Off Gas To Appliance" and call your service tech-  
nician or gas supplier.  
HI  
LO  
TO SHUT OFF  
Gas Valve  
1. Turn off all electrical power to the appliance (remote wall  
switch) or set the thermostat to the lowest setting, if ap-  
plicable.  
5. This appliance is equipped with an ignition device which au-  
tomatically lights the burner. Do Not try to light the burner  
by hand.  
TO TURN OFF GAS TO APPLIANCE  
1. For complete shut-down, turn remote wall switch to "OFF" or  
3. Close the main line shut-off valve.  
set the thermostat to the lowest setting, if applicable.  
2. Turn the ON/OFF switch to “OFF”, if Step 1 is not applicable.  
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.  
20  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
INSTRUCTIONS D’ALLUMAGE — ELECTRONIC  
POUR PLUS DE SÉCURITÉ LIRE AVANT DE METTRE EN MARCHE  
AVERTISSEMENT: SI VOUS NE SUIVEZ PAS CES INSTRUCTIONS à LA LETTRE, IL POURRAIT S’EN SUIVRE UN INCENDIE OU  
UNE EXPLOSION CAUSANT DES DOMMAGES MATÉRIELS, DES BLESSURES CORPORELLES OU MÊME DES PERTES DE VIE.  
A. Cet appareil est muni d’un dispositif d’allumage qui allume  
automatiquement la veilleuse. Ne tentez pas d’allumer la veil-  
leuse manuellement.  
Appelez immédiatement votre fournisseur de gaz depuis un  
voisin. Suivez les instructions du fournisseur.  
Sivousnepouvezrejoindrelefournisseur, appelezleservice  
des incendies.  
B. AVANT DE FAIRE FONCTIONNER: reniflez tout autour de  
l’appareil pour déceler une odeur de gaz. Reniflez près du  
plancher, car certains gaz sont plus lourds que l’air et peuvent  
s’accumuler au niveau du sol.  
C. Si un élément de cette unité ne fonctionne pas tel que  
décrit dans les instructions, n’essayez pas de le réparer,  
appelez un technicien qualifié. N’utilisez-pas d’outils. Le  
fait de forcer la manette ou de la réparer peut déclencher  
une explosion ou un incendie.  
QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ :  
D. N’utilisez pas cet appareil s’il a été plongé dans l’eau,  
même partiellement. Faites inspecter l’appareil par un  
technicien qualifié et remplacez toute partie du système  
de contrôle et toute commande qui ont été plongés dans  
l’eau.  
Ne pas tenter d’allumer d’appareil.  
Ne touchez à aucun interrupteur; ne pas vous servir des  
téléphones se trouvant dans le bâtiment.  
INSTRUCTIONS DE MISE EN MARCHE  
1. ARRÊTEZ ! Lisez les instructions de sécurité sur la portion  
6. Attendre cinq (5) minutes pour laisser échapper tout le gaz.  
Reniflez tout autour de l’appareil, y compris près du plancher,  
pour déceler une odeur de gaz. Si vous sentez une odeur de  
gaz, ARRÊTEZ ! Passez à l’étape B des instructions de sécurité  
sur la portion supérieure (à gauche) de cette étiquette. S’il n’y  
supérieure (à gauche) de cette étiquette.  
2. Tournez l’interrupteur mural à la position d’arrêt “OFF” ou plaez  
le thermostat à plssible, si requis.  
a pas d’odeur de gaz, passez à l’étape suivante.  
7. Tournezl'interrupteurmuralàdistanceàlaposition"marche"  
(On) ou placez le thermostat à la temperature désarée, si  
requis.  
3. Tournezl’interrupteur"marche/arrêt"àlaposition"arrêt"(Off)si  
l'etape 2 est appropriee. Cet interrupteur "marche/arrêt" devrait  
toujours être en position "arrêt" (Off).  
8. Tournez l'interupteur "marche/arrét" de l'appareil à la  
position "marche" (On), si aucune odeur de gaz n a été  
détectée à l'étape 6.  
4. Assurez-vous que la soupape d "arrêt" de la canalisation prin-  
cipale est ouverte.  
9. Si l’appareil ne se met pas en marche, suivre les in-  
structions intitulées “Pour fermer le gaz qui alimente  
l’appareil” et appeler un technicien ou le fournisseur de  
gaz.  
HI  
LO  
POUR ÉTEINDRE LAPPAREIL  
Vue De Face  
5. Cet appareil est êquipê d'un dispositif d'allumage qui allume  
automatiquementlebruleur. N'essayezpasd'allumerlebruleur  
à la main.  
1. Coupez tout le courant électrique qui alimente l’appareil  
(interrupteur mural) ou placez le thermostat à la plus basse  
température, si requis.  
COMMENT COUPER LADMISSION DE GAZ DE LAPPAREIL  
1. Pour une fermeture complète, tournez l’interrupteur mural à la  
3. Fermez la soupape d’arrêt de la canalisation principale.  
position d’arrêt “OFF”.  
2. Tournez la manette de réglage du gaz à la position d’arrêt “OFF”.  
Ne la forcez pas.  
REMARQUE : LES SCHÉMAS ET LES ILLUSTRATIONS NE SONT PAS À L’ÉCHELLE  
21  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
MAINTENANCE SCHEDULE  
Turn off gas and electrical power to the fireplace and allow it to cool before cleaning or servicing the appliance.  
Annually (Before the onset of the Burning Season)  
MAINTENANCE TASK  
ACCOMPLISHING PERSON  
PROCEDURE  
Inspect/Clean Burner, Logs  
and Controls  
Qualified Service Technician  
Inspect valve and ensure it is properly operating. Check piping for  
leaks. Vacuum the control compartment, fireplace logs and burner area.  
CheckFlamePatternsandFlameHeight Qualified Service Technician  
Refer to Figure 13 (LSM40-2) or Figure 14 (LSM45-2) on Page 13 and  
verify the flame pattern and height displayed by the appliance conforms  
to the picture. Flames must not impinge on the logs. Ensure flames  
are steady (not lifting or floating).  
Inspect/Clean Pilot and Burner  
Check Vent System  
Qualified Service Technician  
Qualified Service Technician  
Refer to Figure 16 (Millivolt) or Figure 17 (Electronic) on Page 14.  
Remove any surface build-up on pilot and burner assembly. Wipe the  
pilot nozzles, igniter/flame rod and hood. Ensure the pilot flame engulfs  
the flame sensor as shown.  
Inspect the vent system at the top and at the base (within the firebox)  
for signs of blockage or obstruction. Look for any signs of dislocation  
or deterioration of the vent components. Note: Excessive condensation  
cancausecorrosionofcaps, pipe&ttings(excessivecondensationcan  
be caused by long lateral runs, too many elbows and/or exterior portions  
of the system being exposed to cold weather). Also inspect wall straps  
or plumbers's tape to ensure it is secure and in place.  
Appliance Checkout  
Qualified Service Technician  
Perform the appropriate appliance checkout procedure detailed in this  
manual.  
Replace Glowing Embers  
Homeowner/Qualified Service  
Technician  
Remove old ember materials (rockwool) and vacuum the ember place-  
ment area. Place new embers per instructions on Page 11.  
Periodically (After the Burning Season)  
MAINTENANCE TASK  
ACCOMPLISHING PERSON  
PROCEDURE  
Clean Firebox Interior  
Homeowner  
Carefullyremovelogs,rockwool,volcanicstoneandvermiculite. Vacuum  
out interior of the firebox. Clean firebox walls and log grate. Replace  
logs,rockwool,vermiculiteandvolcanicstoneasdetailedinthismanual.  
CheckFlamePatternsandFlameHeight Homeowner  
Refer to Figures 13 and 14 on Page 13 and verify the flame pattern and  
height displayed by the appliance conforms to the picture. Flames must  
not impinge on the logs.  
Check Vent System  
Homeowner  
Homeowner  
Inspect the vent system at the top and at the base (within the firebox)  
for signs of blockage or obstruction. Look for any signs of dislocation  
of the vent components.  
Clean Front Glass Enclosure Panel  
Clean as necessary following the directions provided in this manual. DO  
NOT TOUCH OR ATTEMPT TO CLEAN GLASS WHILE HOT.  
22  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
TROUBLESHOOTING GUIDE - MILLIVOLT GAS CONTROL SYSTEM  
Note: Before troubleshooting the gas control system, make sure the external gas shut off valve, located at gas supply inlet, (and wall switch, if  
applicable), is in the “ON” position.  
Important: Valve system troubleshooting should only be accomplished by a qualified service technician.  
SYMPTOM  
POSSIBLE CAUSES  
CORRECTIVE ACTION  
1. Spark igniter will not light pilot after  
A. Defective igniter  
Check for spark at electrode and pilot; if no spark and  
electrode wire is properly connected, replace igniter.  
repeated triggering of igniter button.  
(no spark at electrode).  
B. Defective or misaligned electrode at pilot  
Using a match, light pilot. If pilot lights, turn off pilot  
and trigger the igniter button again. If pilot lights, an  
improper gas mixture caused the bad lighting and a  
longer purge period is recommended. If pilot will not  
lightcheckgapatelectrodeandpilotshouldbe1/8"  
to have a strong spark. If gap measures 1/8", replace  
pilot (see Figures 16 or 17 on Page 14).  
WARNING: if the pilot will not light  
after 1 minute of attempting, wait  
for at least 5 minutes for gas to  
clear before attempting again.  
(spark at electrode).  
C. Gas supply pressure errant.  
Checkinletgaspressure. Itshouldbewithinthelimits  
as marked on the rating plate.  
D. Pilot orifice plugged.  
Clean or replace pilot orifice.  
2. Pilot will not stay lit after  
carefully following the lighting  
instructions.  
A. Defective pilot generator  
(thermocouple)  
Check pilot flame, it must impinge on thermocouple  
(see Figures 16 or 17 on Page 14). Clean and/or  
adjust pilot for maximum flame impingement on  
thermocouple. Ensure that the connection between  
the valve and thermocouple are tight and secure.  
3. Pilot burning, no gas to burner, Valve A. Wall switch or wires defective.  
knob “ON,” and the (standard) burner  
Check wall switch and wires for proper connections.  
Jumper wire across terminals at wall switch, if burner  
comeson,replacedefectivewallswitch.Ifokay,jumper  
wiresacrosswallswitchwiresatvalve,ifburnercomes  
on, wires are faulty or connections are bad.  
OFF/ON switch is “ON." Read impor-  
tant note below.  
B. Thermopile may not be generating suf-  
Check thermopile with millivolt meter. Take reading  
at thermopile terminals of gas valve. Should read  
325 millivolts minimum with optional wall switch  
“OFF.” Replace faulty thermopile if reading is below  
specified minimum.  
IMPORTANT NOTE: If an optional  
ficient millivolts.  
*remote switch is used for burner  
operation, if the standard burner  
OFF/ON switch is still installed on  
appliance it must be in the "OFF"  
C. Plugged burner orifice.  
Check burner orifice for blockage and remove.  
position.  
D. OFF/ON Switch & *Remote Switch are in  
the "ON" position resulting in excessive  
resistance.  
When turning on the burner using a *remote switch,  
ensure that the standard OFF/ON switch is in the "OFF"  
position. If both switches are in the ON position, it  
may result in excessive resistance (& millivolt drain-  
age) and the burner may not come on.  
*Optional remote switch kits - wall  
switch, wall thermostat or remote  
control.  
4. Frequent pilot/burner outage prob-  
A. Pilot flame may be too low or blowing  
Clean and/or adjust pilot flame for maximum flame  
lem.  
(high) causing the pilot/valve safety to drop impingement on thermocouple (see Figures 16 or  
out. 17 on Page 14).  
23  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
TROUBLESHOOTING GUIDE - ELECTRONIC GAS CONTROL SYSTEM  
Note: Before troubleshooting the gas control system, make sure the external gas shut off valve, located at gas supply inlet, (and wall switch, if  
applicable), is in the “ON” position.  
Important: Valve system troubleshooting should only be accomplished by a qualified service technician.  
SYMPTOM  
POSSIBLE CAUSES  
CORRECTIVE ACTION  
1. Nothing happens when ON/OFF switch is  
A. Low voltage/or bad lead wires.  
Check voltage on AC terminals of module. The value  
should be around 24 VAC. Confirm that wire con-  
nections are secure.  
turned on (pilot does not spark).  
B. Damaged igniter wire.  
Check for visible cracked casing, cuts, etc.  
C. Damaged pilot assembly.  
Check pilot assembly for visibly broken spark elec-  
trode, etc.  
D. Batteries Low  
Check voltage on D.C. terminal of batteries in remote  
control. The value should be around 3.0V  
2. The main burner does not light and the  
A. No fuel supply.  
Ensure that the gas supply is turned on.  
igniter is sparking.  
B. Loose sensor wire.  
Ensure sensor wire connection is secure to purple  
wire of ignition control.  
C. Loose wires to valve.  
Ensure blue and white (2) wires connection is secure  
to valve.  
D. Air in the gas line.  
Purge gas line of air.  
E. Low voltage.  
Test voltage at AC terminals of module for 24 VAC.  
If no voltage, replace module.  
Checkelectricalconnectionsbetweenmoduleandgas  
control. If okay, replace gas control (valve).  
3. The main burner come "ON" but then go  
A. Gas supply is turned "OFF".  
Turned gas supply to "ON".  
Check wire connection.  
"OFF".  
B. Loose wire connection on valve or  
ignition module.  
C. Flame does not engulf flame sensor.  
D. Obstructed vent system.  
Check location of sensor.  
Check vent system for obstructions.  
Check for proper log placement.  
Check for proper air shutter openings.  
4. The log and glass soot.  
A. Flame impingement on the log.  
B. Improper air shutter opening.  
24  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
REPLACEMENT PARTS LIST  
Item Description  
No.  
LSM40-2  
LSM45-2  
Gas Controls - SIT Millivolt  
Cat.  
No.  
Qty. Cat. No. Qty.  
Item Description  
No.  
Natural  
Propane  
Cat. No. Qty. Cat. No. Qty.  
1
Brick Liner Kit (a) - Buff Rustic  
H2219  
H4801  
H2220  
H4803  
H2221  
H2222  
1
1
1
1
1
1
H2223  
H4802  
H2224  
H4804  
H2225  
H2226  
1
1
1
1
1
1
30  
31  
32  
33  
34  
35  
36  
Gas Valve, SIT, Millivolt  
43K07  
10K86  
H2291  
H2294  
H2295  
H2296  
H2297  
1
1
1
1
1
1
1
88J53  
10K86  
H2292  
H2294  
H2295  
H2296  
H2297  
1
1
1
1
1
1
1
Brick Liner Kit (b) - Red Rustic  
Brick Liner Kit (c) - Buff Herringbone  
Brick Liner Kit (d) - Red Herringbone  
Brick Liner Kit (e) - Red Old Cottage  
Brick Liner Kit (f) - Black  
Piezo Igniter  
Pilot Assembly  
Pilot Generator  
Thermocouple  
Pilot Tube  
2
Door Modesty Shield  
Log Set (Oak)  
H4808  
H4799  
H4800  
H2281  
H2274  
H4817  
H1428  
43K85  
H2277  
H2278  
H1427  
H1452  
H2283  
H2285  
H2286  
H2287  
88L53  
H4907  
80L41  
93L32  
H3371  
H3373  
H3369  
80L42  
H3696  
H4805  
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
H4809  
H4799  
H4800  
H2282  
H2274  
H4817  
H1428  
43K85  
H2277  
H2279  
H1169  
H1452  
H2284  
H2285  
H2288  
H4816  
88L53  
H4907  
80L41  
93L32  
H3372  
H3374  
H3370  
80L42  
H3696  
H4806  
1
1
1
1
2
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
3
3
Log Set (Birch)  
Electrode and Cable  
4
Enclosure, Glass Door  
Spring Latch Assembly  
Burner Assembly  
Venturi  
Gas Controls - SIT Electronic  
5
Item Description  
No.  
Natural Gas  
Propane Gas  
6
Part  
No.  
Qty.  
1
Part No.  
Qty.  
7
8
Gasket - Venturi  
**  
**  
Gas Train Assembly Electronic H4190  
LSM40EN  
See Note  
1
9
Access Plate  
u
10  
11  
12  
13  
14  
15  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
Screen Rod  
Gas Train Assembly Electronic H4193  
LSM45EN  
1
See Note  
1
u
Screen  
40  
41  
Gas Valve, SIT  
Pilot Assembly  
99K88  
H2298  
1
1
99K89  
1
1
Gasket, Access Plate  
Gas Line Tubing  
See Note  
v
Connector, Male  
42  
43  
Transformer  
42J32  
H1167  
1
1
42J32  
H1167  
1
1
Orifice, Natural Gas  
Orifice, Propane Gas  
Bag of Rockwool  
Ignition Module (with wire  
harness)  
uIf a propane gas train assembly is needed, order catalog number H4190 (for  
model LSM40-2) or H4193 (for model LSM45-2), NG gas train assembly as  
well as conversion kit, cat. no. H3238 (for model LSM40-2) or H4813 (for  
model LSM45-2)  
Grate Assembly  
On/Off Control Switch  
Gas Line, Flexible Connection  
Modesty Panel, Right Side  
Modesty Panel, Left Side  
Floor Panel  
vIf a propane gas pilot assembly is needed, order H2298 (NG pilot assembly)  
as well as conversion kit, cat. no. H3238 (for model LSM40-2) or H4813 (for  
model LSM45-2)  
Bag of Volcanic Stone (lava rock)  
Bag of Vermiculite  
Barrier Screen Panel  
WARNING  
Failure to position the parts in accordance with these  
diagrams or failure to use only parts specifically  
approved with this appliance may result in property  
damage or personal injury.  
Contact an Authorized Lennox Hearth Products dealer to obtain any of  
these parts. Never use substitute materials. Use of non-approved parts  
can result in poor performance and safety hazards.  
AVERTISSEMENT  
Risque de dommages ou de blessures si les pièces  
ne sont pas installées conformément à ces schémas  
et ou si des pièces autres que celles spécifiquement  
approuvées avec cet appareil sont utilisées.  
25  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
REPLACEMENT PARTS  
18  
16  
13  
3
23  
24  
15  
8
20  
6
14  
21  
5
7
2
40  
31  
4
30  
HI  
LO  
17  
10  
19  
22  
1
36  
33  
1
34  
1
32  
11  
1
(Rustic Pattern Shown)  
35  
12  
42  
41  
9
25  
43  
26  
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
NOTES  
27  
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LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • CARE AND OPERATION INSTRUCTIONS  
Lennox Hearth Products reserves the right to make changes at any time, without notice, in design,  
materials, specifications, prices and also to discontinue colors, styles and products.  
Consult your local distributor for fireplace code information.  
Printed in U.S.A. © 2005/2011 Lennox Hearth Products  
P/N 875027M Rev. H 06/2011  
1508 Elm Hill Pike, Suite 108 • Nashville, TN 37210  
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