Lennox MPDT33RPM, MPDBSRNM, MPD35RPM, MPD40CNM, MPD40RNM Care And Operation Instructions Manual

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Page 1

CARE AND OPERATION INSTRUCTIONS

See Page 2 For Details

SAFETY

GUARD

PROTECTS AGAINST BURNS

MPD Direct-Vent Gas Fireplaces

P/N 506017-06 Rev. A 08/2012

This manual is one of a set of two supporting this product. Refer to P/N 506015-07 for Installation Instructions.

Ce manuel est disponible en francais, simplement en faire la demande. Numéro de la pièce 506223-44.

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

[EN FRANÇAIS] L’information 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 IT AWAY!

This manual contains

important operating

and safety

information.

WARNING

INSTALLER: Leave this manual with the appliance. CONSUMER: Retain this manual for future reference.

INSTALLATEUR : Laissez cette notice avec l'appareil. CONSOMMATEUR : Conservez cette notice pour consultation ultérieure.

AVERTISSEMENT

MODELS

MPDT33RNM MPDT33RPM MPDR33RNM MPDR33RPM MPD35CNM MPD35RNM

OTL Report No. 116-F-13g-5

MILLIVOLT: ELECTRONIC:

MPD35RPM MPD40CNM MPD40RNM MPD40RPM MPD45RNM MPD45RPM

Portland

MPDT33RNE MPDR33RNE MPD35CNE MPD35RNE

MPD40CNE MPD40RNE MPD45RNE

AVISO

s(/4',!337),,#!53%  "52.3

s$/./44/5#(',!33  5.4),#//,%$

s.%6%2!,,/7#(),$2%.  4/4/5#(',!33

s5.%352&!#%6)42»%#(!5$%  0%54#!53%2$%3"2Ä,52%3

s,!)33%22%&2/)$)2,!352&!#%  6)42»%!6!.4$g94/5#(%2

s.%0%2-%44%:*!-!)3Ã5.%.&!.4  $%4/5#(%2,!352&!#%6)42»%

WARNING: If the information in these instructions is not followed exactly, a ﬁre or explosion may result, causing property damage, personal injury, or death.

$ONOTSTOREORUSEGASOLINEOROTHERFLAMMABLE

vapors and liquids in the vicinity of this or any other appliance.

7(!44/$/)&9/53-%,,'!3  s$ONOTTry to light any appliance.  s$ONOTTOUCHANYELECTRICALSWITCHDONOTUSEANY

phone in your building.

 s)MMEDIATELYCALLYOURGASSUPPLIERFROMA

neighbor’SPHONE&OLLOWTHEGASSUPPLIER’s instructions.

 s)F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.

s%,6)$2)/#!,)%.4%  #!53!2¬15%-!$52!3

s534%$$%"%.5.#!  4/#!2%,6)$2)/#!,)%.4%

s,/3.)¶/3$%"%..5.#!  4/#!2%,6)$2)/

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.

- 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.

15%&!)2%3)6/533%.4%:5.%/$%52$%'!:  s.EPASTENTERDALLUMERDAPPAREIL  s.ETOUCHEZÜAUCANINTERRUPTEUr. Ne pas vous servir des

téléphones se trouvant dans le bâtiment où vous trouvez.

 s!PPELEZIMM£DIATEMENTVOTREFOURNISSEURDEGAZDEPUIS

un voisin. Suivez les instructions du fournisseur.

 s3IVOUSNEPOUVEZREJOINDRELEFOURNISSEURDEGAZ

appelez le service des incindies.

- ,’installation et l’entretien doivent être assurés par un installateur ou un service d’entretien qualiﬁé ou par le fournisseur de gaz.

Page 2

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

Thank you for your purchase. We appreciate your business! Please carefully read and follow all instructions in this manual.

Pay special attention to all warnings and safety information.

Following these safety, care, and operation instructions will help ensure many years of dependable and enjoyable service from your ﬁ replace.

Safety and

Your Fireplace

To help us keep you up-to-date on product information and offers, please take a few moments to register your product online at

www.lennox.com (Hearth / Owner Resources)

•

FREE

The Lennox® SAFETY GUARD protects against

severe burns and injuries by preventing direct contact

To receive your FREE SAFETY GUARD, call 1-800-786-7976

SAFETY GUARD

with the front glass surface of your ﬁ replace.

or visit

www.lennox.com (Hearth / Owner Resources).

Note: Safety Guards may not be available for some

older models that are no longer in production.

OFFER

•

Table of Contents

Safety and Your Fireplace. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Attaching Safety-in-Operation Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Appliance Installation, Service, and Maintenance Notices . . . . . . . . . . . . . . . . . 6

Appliance Operation Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

BTU Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Gas Pressure Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Oriﬁ ce Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Burn-In Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Operation and Care of Your Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Gas Controls/Control Compartment Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Variable Flame Height Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Front Glass Enclosure Panel, Removal and Installation . . . . . . . . . . . . . . . . . . 11

Install Volcanic Stone, Glowing Embers, and Logs . . . . . . . . . . . . . . . . . . . . . 12

Burner Flame Appearance and Sooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Burner Flame Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Millivolt Appliance Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Electronic Appliance Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Ordering Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Product Reference Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Accessory Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Lighting Instructions – Millivolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Lighting Instructions – Electronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Troubleshooting Guide – Millivolt Gas Control System . . . . . . . . . . . . . . . . . . 28

Troubleshooting Guide – Electronic Gas Control System . . . . . . . . . . . . . . . . . 29

Replacement Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

All parts of your Lennox

Hearth Products ﬁ replace

get EXTREMELY HOT!

 To prevent severe burns and injuries, install

a screen or physical barrier to prevent direct contact with the glass.

To order a FREE Lennox® SAFETY GUARD for your ﬁ replace, see details at left.

 Follow the safety instructions below

and be sure everyone in your household understands this burn hazard:

• The surfaces on your ﬁ replace get EXTREMELY HOT!

• The glass on the front of the ﬁ replace reaches EXTREMELY HIGH temperatures and can cause severe burns if touched.

• Keep children away from an operating ﬁ replace. Closely supervise children in any room where a ﬁ replace is operating to prevent contact with glass.

• Keep clothing, furniture, gasoline, and other ﬂ ammable liquids away from the ﬁ replace.

• Even after the gas is turned off, ﬁ replace surfaces remain extremely hot.

 Be sure to attach the enclosed Safety-in-

Operation Warnings where you turn on your

ﬁ replace, to help remind everyone of the dangers associated with high temperatures (see page 5).

 Read Important Safety Information on

page 4.

Page 3

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

[FRENCH] [SPANISH]

La sécurité et

votre foyer

Toutes les parties de votre foyer

Lennox Hearth Products deviennent

EXTRÊMEMENT CHAUDES !

 Aﬁ n 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.

Pour commander un PANNEAU DE PROTECTION Lennox® GRATUIT pour votre foyer, consultez les détails dans la partie gauche.

 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 :

• Les surfaces de votre foyer deviennent EXTRÊMEMENT CHAUDES !

• La vitre située à l'avant du foyer atteint des températures EXTRÊMEMENT ÉLEVÉES et peut causer de graves blessures en cas de contact.

• Tenez les enfants à l'écart du foyer lorsqu'il fonctionne. Surveillez attentivement les enfants dans les pièces où un foyer est utilisé aﬁ n d'éviter qu'ils ne soient en contact avec la vitre.

• Tenez tous les vêtements, les meubles, l'essence et tout autre liquide inﬂ ammable à l'écart du foyer.

• Même après fermeture du gaz, les surfaces du foyer restent extrêmement chaudes.

Seguridad y

su chimenea

¡Todas las partes de la chimenea

Lennox Hearth Products se ponen

MUY CALIENTES!

 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.

 Siga las instrucciones de seguridad a

continuación y asegúrese de que todos en su hogar sepan acerca de este peligro de quemadura:

• ¡Las superﬁ cies de la chimenea se ponen MUY CALIENTES!

• El vidrio delante de la chimenea alcanza temperaturas EXTREMADAMENTE ALTAS y puede causar quemaduras graves si se toca.

• 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.

• Mantenga la ropa, mobiliario, gasolina y otros líquidos inﬂ amables alejados de la chimenea.

• Aún después de haber apagado el gas, las superﬁ cies de la chimenea permanecen extremadamente calientes.

 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).

 Lisez la section Informations importantes

relatives à la sécurité, page 4.

 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).

 Lea la Información importante de seguridad

en la página 4.

Page 4

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

Important Safety Information

1. WARNING: Do not operate appliance with the glass front removed, cracked or broken.

2. Do not use this appliance if any part has been under water. Immediately call a qualiﬁ ed 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. Due to high temperatures, the appliance should be located out of trafﬁ c and away from furniture and draperies.

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 ﬂ ammable material should not be placed on or near the appliance.

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 ﬁ replace 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.

8. Installation and repair should be done by a qualiﬁ ed 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 10.

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.

2. Ne pas utiliser cet appareil s’il a été plongé, même partiellement, dans l’eau. Appeler un technicien qualiﬁ é pour inspecter l’appareil et remplacer toute partie du système de commande et toute commande qui a été plongée dans l’eau.

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.

4. Les enfants et les adultes devraient être informés des dangers que posent les températures de surface élevées et se tenir à distance aﬁ n d’éviter des brûlures ou que leurs vêtements ne s’enﬂ amment.

5. On ne devrait pas placer de vêtements ni d’autres matières inﬂ ammables sur l’appareil ni à proximité.

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.

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. L’installation et la réparation devrait être conﬁ ées à un technicien qualiﬁ é. L’appareil 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 10.

[SPANISH]

Información importante de seguridad

1. ADVERTENCIA: No opere el artefacto con el frente de vidrio quitado, agrietado o roto.

2. No use este artefacto si alguna de sus partes ha estado bajo agua. Llame de inmediato a un técnico de servicio caliﬁ cado para que inspeccione el artefacto y reemplace cualquier parte del sistema de control y cualquier control de gas que haya estado bajo agua.

3. Debido a las altas temperaturas, el artefacto debe situarse fuera de las áreas de tráﬁ co y lejos del mobiliario y cortinas.

4. Se debe alertar a los niños y adultos sobre los peligros de las altas temperaturas en la superﬁ cie y que se mantengan alejados para evitar quemaduras o ignición de la ropa.

5. No debe colocarse ropa u otros materiales inﬂ amables sobre y cerca del artefacto.

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 superﬁ cies calientes.

7. Cualquier malla o resguardo de seguridad quitado para dar servicio a un artefacto, debe reinstalarse antes de operar el artefacto.

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 10.

Page 5

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

HOMEOWNER’S INSTRUCTIONS—ATTACHING SAFETY-IN-OPERATION WARNINGS

ATTACHING SAFETY-IN-OPERATION WARNINGS

Your ﬁ replace has been furnished with safety instruction labels that are to be afﬁ xed to the operation and control point of the ﬁ replace. A safety instruction label should be afﬁ xed to the wall switch plate where the ﬁ replace is turned on and off (See Figure A) or wall thermostat (See Figure B) and if used on the remote control handheld transmitter (Figure C). The warnings should already have been put in place when the ﬁ replace initial set-up was completed. If they are not afﬁ xed at these spots, locate the multi-lingual adhesive labels provided with these instructions and proceed as follows:

1. Locate the wall switch or wall thermostat that controls the ﬁ replace (verify the switch operates the ﬁ replace by turning it on and off). Clean the wall switch plate or wall thermostat thoroughly to remove any dust and oils. Afﬁ x the label to the surface of the plate of the wall switch that controls the ﬁ replace (Figure A) or the wall thermostat (Figure B). Choose the language primarily spoken in the home.

2. If a remote control is used to control the ﬁ replace, locate the transmitter and clean it thoroughly to remove any dust and oils. Afﬁ x the label to the surface of handheld transmitter (Figure C). Choose the language primarily spoken in the home.

3. If you are unable to locate the labels, please call Lennox Hearth Products or your nearest Lennox Hearth Products dealer to receive additional safety instruction labels free of charge.

Cat. No. H8024 Replacement Label Kit

LENNOX HEARTH PRODUCTS 1-800-655-2008

Note: English is red text on clear label. French and Spanish are white text on black label.

APPOSITION DES MISES EN GARDE RELATIVES À LA SÉCURITÉ D’UTILISATION

Votre foyer a été livré avec des étiquettes de sécurité qui doivent être collées à côté des dispositifs de contrôle du foyer. Une étiquette de sécurité doit être collée sur la plaque de l’interrupteur contrôlant l’allumage du foyer (voir Figure A) ou sur le thermostat mural (voir Figure B) et, le cas échéant, sur le boîtier de la télécommande (Figure C). Les mises en garde auraient dû être collées au moment de l’installation initiale du foyer. Si ce n’est pas le cas, prenez les étiquettes adhésives multilingues fournies avec ces instructions et procédez comme suit:

1. Repérez l’interrupteur ou le thermostat mural qui contrôle le foyer (vériﬁ ez que l’interrupteur contrôle le fonctionnement du foyer en le faisant basculer de Marche à Arrêt, et vice-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 principalement parlée dans la résidence du propriétaire.

2. Si une télécommande est utilisée pour contrôler 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 (Figure C). Choisissez la langue qui est principalement parlée dans la résidence du propriétaire.

3. Si vous ne trouvez pas les étiquettes, veuillez appeler Lennox Hearth Products ou votre distributeur Lennox Hearth Products local pour recevoir gratuitement des étiquettes supplémentaires.

Étiquettes de remplacement, n° cat. H8024

LENNOX HEARTH PRODUCTS 1-800-655-2008

Remarque : Le texte anglais est rouge sur un support transparent. Le texte français et espagnol est blanc sur un support noir.

COLOCACIÓN DE ADVERTENCIAS DE SEGURIDAD EN OPERACIÓN

Su chimenea incluye etiquetas de instrucciones de seguridad que deben colocarse en el punto de operación y control de la chimenea. Se debe colocar una etiqueta de instrucciones de seguridad en la placa del interruptor de pared desde el cual se enciende y se apaga la chimenea

(ver la Figura A) o en el termostato de pared (ver la Figura B) y en el transmisor de control remoto (Figura C) si

se usa. Las advertencias ya deben haberse colocado cuando se completó la instalación inicial de la chimenea. Si no están colocadas en estos lugares, encuentre las etiquetas adhesivas multilingües proporcionadas con estas instrucciones y prosiga de la siguiente manera:

1. Identiﬁ que el interruptor o el termostato de pared que controla la chimenea (veriﬁ que que el interruptor opera la chimenea encendiéndola y apagándola). Limpie bien la placa del interruptor o el termostato de pared para quitar el polvo y aceite. Pegue la etiqueta en la superﬁ cie de la placa del interruptor que controla la chimenea (Figura A) o en el termostato de pared (Figura B). Seleccione el idioma que más se habla en la casa.

2. Si se usa un control remoto para controlar la chimenea, encuentre el transmisor y límpielo bien para quitar el polvo y aceite. Pegue la etiqueta en la superﬁ cie del transmisor (Figura C). Seleccione el idioma que más se habla en la casa.

3. Si no puede encontrar las etiquetas, sírvase llamar a Lennox Hearth Products o al distribuidor de Lennox Hearth Products más cercano para recibir etiquetas de instrucciones de seguridad adicionales gratuitas.

Juego de etiquetas de repuesto - Nº de cat. H8024

LENNOX HEARTH PRODUCTS 1-800-655-2008

Nota: La etiqueta en inglés es transparente con texto rojo. Las etiquetas en francés y español son negras con texto blanco.

SAFETY LABEL

DIAGRAMS

Figure A

Illustrations are for example only. Your accessories may be different. / Les illustrations sont par exemple uniquement. Vos accessoires peuvent être différents. / Las ilustraciones son sólo ejemplos. Tu accesorios pueden ser diferentes.

DIAGRAMMES DES ÉTIQUETTES

DE SÉCURITÉ

Figure B

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

DIAGRAMAS DE ETIQUETAS

DE SEGURIDAD

Figure C

Page 6

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

APPLIANCE INSTALLATION, SERVICE, AND MAINTENANCE NOTICES

WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to the owner’s information manual provided with this appliance. For assistance or additional information consult a qualiﬁ ed installer, service agency or the gas supplier.

AVERTISSEMENT : Une installation, un réglage, une modiﬁ cation, une réparation ou un entretien mal effectué peut causer des dommages matériels ou des blessures. Voir la notice de l’utilisateur qui accompgne l’appareil. Pour de l’aide ou des renseignements supplémentaires, consultez un installateur, un technicien agréé ou le fournisseur de gaz.

Only trim kit(s) supplied by the manufacturer shall be used in the installation of this appliance.

Seules les trousses de garniture fournies par le fabricant doivent être utilisées pour l’installation de cet appareil.

These appliances must not be connected to a chimney or ﬂ ue serving a separate solid fuel burning 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 ﬁ re, burns, explosion or carbon monoxide poisoning.

CARBON MONOXIDE POISONING Early signs of carbon monoxide

poisoning are similar to the ﬂ u with headaches, dizziness 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 qualiﬁ ed 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 inﬂ uence of alcohol, and those at high altitudes.

Turn off gas and electrical power to the ﬁ replace 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 following the use of the ﬁ replace.

Young children should be carefully supervised when they are in the same area as a hot termination.

APPLIANCE OPERATION NOTICES Do not operate appliance with the glass

front removed, cracked, or broken. These ﬁ replaces are vented gas appli-

ances. Do not burn wood or other material in these appliances.

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 certiﬁ ed kit is used.

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.

Cet appareil doit être utilisé uniquement avec les types de gaz indiqués sur la plaque signalétique. Ne pas l’utiliser avec d’autres gaz sauf si un kit de conversion certiﬁ é est installé.

Provide adequate clearances around air openings and adequate accessibility clearance for service and proper operation. Never obstruct the front openings of the appliance.

Do not use this appliance if any part has been under water. Immediately call a qualiﬁ ed service technician to inspect the appliance and to replace any part of the control system and any gas control that has been under water.

These ﬁ replaces are designed as supplemental heaters. Therefore, it is advisable to have an alternate primary heat source when installed in a dwelling.

CAUTION: Hot while in operation. Do not touch. Severe Burns may result. Keep children, clothing furniture, gasoline and other liquids having ﬂ ammable vapors away.

ATTENTION : L’appareil est chaud lorsqu’il fonctionne. Ne pas toucher l’appareil. Risque de brûlures graves. Surveiller les enfants. Garder les vêtements, les meubles, l’essence ou autres liquides produisant des vapeur inﬂ ammables loin de l’appareil.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

WARRANTY INFORMATION

Your gas appliance is covered by a limited twenty-year warranty. You will ﬁ nd a copy of the warranty accompanying this manual. Please read the warranty to be familiar with its coverage.

Retain this manual. File it with your other documents for future reference.

Failure to comply with the installation and operating instructions provided will result in an improperly installed and operating appliance, voiding its warranty.

Do not attempt to alter or modify the construction of the appliance or its components. Any modiﬁ cation or alteration may void the warranty, certiﬁ cation, and listings of this unit.

GENERAL INFORMATION

The ﬁ replace models covered in this manual are direct-vent sealed combustion gas ﬁ replace heaters designed for residential application. These direct-vent appliances operate with the combustion chamber completely isolated from the indoor environment.

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.

The Millivolt appliances have a millivolt gas control valve with piezo ignition system. If any optional accessories that will require electrical power are to be installed, the electrical power must be provided at the time of appliance installation.

The Electronic appliances are designed to operate on natural or propane gas. An electronic intermittent pilot ignition system provides safe, efﬁ cient operation. External electrical power is required to operate these units. During a power outage the ﬁ replace may be operated using the battery backup.

These appliances comply with National Safety Standards and are tested and listed by OMNI-Test Laboratories, Inc. (Report No. 116-F-13g-5) to ANSI ZZ21.88-2009 (in Canada, CSA-2.33-2009), and CAN/CGA-

2.17-M91 (R2009) in both USA and Canada, as vented gas ﬁ replace heaters.

The Installation must conform to local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1-2009 / NFPA 54—latest edition, or the Natural Gas and Propane Installation Code, CAN/ 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, the latest edition of the National Electrical Code, ANSI/NFPA 70, or the Canadian Electrical Code, CSA C22.1— latest editions.

Page 7

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

GENERAL INFORMATION

(continued)

BTU Input

Millivolt appliances are manually controlled and feature a spark igniter (piezo) that allows the appliance pilot gas to be lit without the use of matches or batteries. This system provides continued service in the event of a power outage.

Millivolt models come standard with a manually-modulated gas valve. Flame appearance and heat output can be controlled at the gas valve.

Both millivolt and electronic systems can be operated during a power outage, and feature manually operated hi-low ﬂ ame control. The BTU Input for these appliances is shown in

Table 1.

Input Rate (BTU/HR)

Models

MPD33

MPD35

MPD40

MPD45

Nat. Gas Prop. Gas

17,500 high

11,700 low

20,000 high

12,800 low

27,000 high

18,500 low

29,000 high

20,500 low

17,500 high

14,000 low

20,000 high

15,200 low

27,000 high

21,500 low

29,000 high

22,500 low

Table 1: Input (BTU/HR) Gas Valves (Millivolt and Electronic)

Gas Pressure—All Models

Tables 2 and 3 show the appliances' inlet and manifold gas pressure requirements:

Fuel # Minimum Maximum

Natural

Gas

Propane

4.5 in. WC (1.12 kPa)

11.0 in. WC (2.74 kPa)

10.5 in. WC (2.61 kPa)

13.0 in. WC (3.23 kPa)

Table 2: Inlet Gas Supply Pressure

Fuel # Low High

Natural

Gas

Propane

1.6 in. WC (0.40 kPa)

6.3 in. WC (1.57 kPa)

3.5 in. WC

(0.87 kPa)

10.0 in. WC (2.49 kPa)

Table 3: Manifold Gas Supply Pressure

Test gauge connections are provided on the front of the millivolt and electronic gas control valve (identiﬁ ed IN for the inlet and OUT for the manifold side). The control valves have a 3/8 in. (10mm) NPT thread inlet and outlet side of the valve (refer to Figures 1 and 2).

Propane tanks are at pressures that will cause damage to valve components. Verify that the tanks have step down regulators to reduce the pressure to safe levels.

The appliance and its appliance main gas valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psi (3.5 kPa).

The appliance must be isolated from the gas supply piping system by closing its equipment shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less

than 1/2 psi (3.5 kPa).

Oriﬁ ce Sizes—Sea Level to High Altitude (All Models)

These appliances are tested and approved for installation at elevations of 0-4500 feet (0-1372 meters) above sea level using the standard burner oriﬁ ce sizes (marked with an "*" in Table 4 ).

For elevations above 4500 feet, contact your gas supplier or qualiﬁ ed service technician.

Model

Series

MPD33

MPD35

MPD40

MPD45

Nat.Gas

drill size (inches)

#47 (0.0785 in.)*

99K74•

#44 (0.086 in.)*

60J80•

#38 (0.102 in.)*

99K76•

#37 (0.104 in.)*

24M10•

* Standard size installed at factory

• Part /Cat. Number

Propane

drill size (inches)

0.048 in. 99K78•

#55 (0.052 in.)*

19L52•

0.062 in. 21L01•

#52 (0.0635 in.)*

37G00•

Table 4: Burner Oriﬁ ce Sizes Elevation 0–4500 ft ( 0–1372 m)

Deration—At higher elevations, the amount of BTU fuel value delivered must be reduced by either using gas that has been derated by the gas company or by changing the burner oriﬁ ce to a smaller size as regulated by the local authorities having jurisdiction and by the (USA) National Fuel Gas Code NFPA 54— latest edition / ANSI Z223.1-2009 or, in Canada, the CAN/CSA-B149.1 codes—latest edition.

Install the appliance according to the regulations of the local authorities having jurisdiction and, in the USA, the National Fuel Gas Code NFPA 54—latest edition / ANSI Z223.1-2009 or, in Canada, the CAN/ CSA-B149.1—latest edition.

Flame breadth, height and width will diminish 4% for every 1,000 feet of altitude.

In Canada - CAN/CGA-2.17-M91 (R2009) (high altitude):

THE CONVERSION SHALL BE CARRIED OUT BY A MANUFACTURER’S AUTHORIZED REPRESENTATIVE, IN ACCORDANCE WITH THE REQUIREMENTS OF THE MANUFACTURER, PROVINCIAL OR TERRITORIAL AUTHORITIES HAVING JURISDICTION AND IN ACCORDANCE WITH THE REQUIREMENTS OF THE CAN/CGA-B149.1 OR CAN/CGA-B149.2 INSTALLATION CODES.

Burn-in Period

During the ﬁ rst few ﬁ res 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.

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.

If an optional blower is installed, do not turn it on during the burn-in period.

NOTICE: A white ﬁ lm may develop

on the glass enclosure panel during the ﬁ rst few ﬁ res as part of the burn-in process.

The first few times you use the ﬁ replace, clean the glass after each use (AFTER THE GLASS HAS COMPLETELY COOLED); otherwise, the white ﬁ lm will bake onto the glass and become difﬁ cult to remove.

See glass cleaning instructions on Page 10.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 8

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

OPERATION AND CARE OF YOUR APPLIANCE

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 ﬁ replace 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.

AVERTISSEMENT

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.

Main Gas Shut-Off Valve

*CPI Switch - Switches from an

intermittent pilot mode to a standing pilot mode (a standing pilot stays lit when the ﬁreplace is off).

DFC Board

Burner Assembly

Battery

Gas Valve

Holder

*CPI Switch Positions (o) = Intermittent Pilot Mode (-) = Standing Pilot Mode

Electronic Model

CPI Switch*

Pilot Assembly

Door Latch

Gas Controls/Control Compartment Access

Operation of millivolt and electronic gas control systems is different. Before lighting and operating your appliance, determine whether you have a millivolt or electronic appliance.

The gas controls can be found behind the lower access panel.

To open the panel, press the upper right corner of the panel until the spring-loaded magnetic catch is released. Then gently pull the panel forward to release the left magnetic catch and allow the panel to swing down to open.

On millivolt systems, the piezo igniter, Hi/ Lo ﬂ ame adjustment knob, pilot and main gas ON/OFF control knob, and gas valve (Figure 1) are located behind the lower access panel.

On electronic systems, the hi/lo ﬂ ame adjustment knob and gas valve are located behind the lower access panel.To remove the lower access panel, slide the hinge pin on the left side of the panel to the RIGHT until it disengages from the left corner post hole. Pull the panel diagonally to the LEFT, away from the ﬁ replace.

To ease panel replacement, press the springloaded catches to temporarily lock them in their retracted position, and then close the panel.

Refer to Figure 1 for access to the gas control valve. Millivolt appliances will be ﬁ tted with the gas control valve shown in Figure 2.

Appliances with electronic systems will be ﬁ tted with the electronic valve shown in Figure 3. Familiarize yourself with the gas control valve that your appliance uses.

Figure 1: Control Compartment

Main Gas Shut-Off Valve

Burner Assembly

Gas Valve

(Optional) Burner ON/OFF Switch

Millivolt Model

Pilot Assembly

Piezo

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Door Latch

Page 9

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

Main Gas

Control Knob

Inlet Pressure Port

OUT

Manifold Pressure Port

TPTH TP TH

HI/LO Flame Control Knob

Note: The piezo igniter is located behind the lower access panel (see Figure 1).

Figure 2: SIT Millivolt Gas Valve

(from DFC Wire Harness)

Line (IN) Test Port

Manifold (OUT) Test Port

Orange Wire

(from DFC Wire

Harness)

Green Wire

Hi/Lo Flame Control Knob

Variable Flame Height Adjustment

All Millivolt and electronic appliances are equipped with a variable gas control valve. Flame height for these models may be adjusted through a range between ﬁ xed low and high settings, alternately, while the appliance is in operation.

Adjust the ﬂ ame height as desired after lighting the appliance by rotating the variable adjustment control knob located on the front of the valve (refer to Figure 2).

Main Gas Inlet

3/8 in. NPT

Figure 3: SIT Electronic Gas Valve

Millivolt Appliances

To light millivolt appliances, refer to the detailed lighting instructions found on Page 26 (English) and Page 27 (French).

Millivolt appliance lighting instructions may also be found on the pull-out lighting instruction labels attached to the gas control valve.

Millivolt units are not provided with any factory-installed controls; therefore, one of the optional control switches is required to operate the unit (ON/OFF Wall Switch, Unit-Mountable ON/OFF Switch, Thermostat, Remote Control). See “Accessories” in this manual for details.

Once the pilot is lit, use the switch or remote control to turn the appliance on or off.

Yellow Ground Wire (from DFC Wire Harness)

Electronic Appliances

To light electronic appliances, refer to the detailed lighting instructions on Page 28 (English) and Page 29 (French). Electronic

appliance lighting instructions may also be found on the pull-out lighting instruction label attached to the gas control valve.

If your electronic appliance is equipped with an optional wall switch or remote control kit, the appliance main burner may be turned ON and OFF using the wall switch or remote control.

CPI switch located to the left of the gas valve switches the pilot from intermittent operation (pilot goes out when the ﬁ replace is turned off) to continuous pilot mode. The rocker switch will not turn the burner on or off.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 10

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

MAINTENANCE (See Maintenance Schedule, Page 25 )

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.

WARNING

Turn off gas and electrical power to the ﬁ replace and allow it to cool before cleaning or servicing the appliance.

CAUTION: Wear gloves and safety glasses for protection while doing required maintenance.

Verify proper operation after servicing. S'assurer que l'appareil fonctionne

adéquatement une fois l'entretien terminé.

Always turn off gas to the pilot (millivolt appliances) before cleaning. Before relighting, refer to the lighting instructions in this manual. Instructions are also found on a pull-out panel located on the ﬂ oor of the appliance.

Always keep the appliance area clear and free from combustible materials, gasoline and other ﬂ ammable liquids.

Remember, Millivolt appliances have a continuous burning pilot ﬂ ame. Exercise caution when using products with combustible vapors.

Inspect Venting System

The appliance and venting system should be thoroughly inspected before initial use and at least annually by a qualiﬁ ed service technician (inspection should include ensuring that exhaust or intake passages are unobstructed and vent components are properly assembled and not damaged).

Homeowner must contact a qualiﬁ ed service technician at once if any abnormal condition is observed.

If the venting system is disassembled for any reason, a qualiﬁ ed 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.

Cleaning Glass

(see Front Glass Enclosure Panel, Removal and Installation on Page 11).

Note: Clean glass after ﬁ rst two weeks of operation (after Burn-In period is over) and then only when necessary and when the ﬁ replace is cool. Wipe surface with a clean, dampened, soft cloth. Follow with a dry, soft towel as desired. Take care not to scratch the glass surface.

WARNING: Do not use abrasive cleaners on glass. Never clean the glass when it is hot.

The viewing glass should be cleaned periodically to remove any build-up caused from the following:

• During start-up, it is normal for condensation to form on the inside of the glass (this condensation and fog will usually disappear in a few minutes). The moisture can cause lint, dust and other airborne particles to cling 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 ﬁ lm on the glass.

• A white coating may form on the glass as a result of impurities and minerals in the fuel.

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:

• Non-ammonia based household cleaner

• 50%-50% mix of white vinegar and water

• Gas ﬁ replace/stove glass cleaner

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 ﬁ rmly.

Clean Control Compartment

Keep control compartment clean by vacuuming 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 and circulating air passageways of the appliance be kept clean.

Clean Logs And Burner

Carefully remove the logs (use care when handling the ﬁ ber logs, as they become quite fragile 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).

Note: Improper positioning of logs can create carbon build-up and will alter the performance of the appliance.

Replacing Logs

If the logs become damaged by accident or improper handling and need replacement, use only the proper replacement logs from manufacturer (see Pages 13,14 and 15 for ordering information).

Reinstall Embers and Logs

Carefully follow placement instructions on Pages 12 through 15. All logs should ﬁ t onto corresponding pins and/or log stoppers. This will ensure a proper ﬂ ame and safe combustion.

Inspect Wiring

Refer to wiring diagrams on Page 18.

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

ATTENTION: Au moment de l'entretien des commandes, étiquetez tous les fils avant de les débrancher. Des erreurs de cáblage peuvent entraîner un fonctionnement inadéquat et dangereux.

Inspect and clean all wire connections. Ensure that there is no melting or damage. Inspection should include:

• Terminals at the Valve

• CPI Switch (Pilot Mode)

• (Optional Control Switch) Wall Thermostat, Remote Control or Remote Wall Switch Kit

Inspect Burner Flame and Pilot Flame Appearance

Periodically do a visual check of the burner and pilot ﬂ ames.

See Burner Flame Appearance on Page 16. See Pilot Flame Appearance on Page 17.

Contact a qualiﬁ ed service technician at once if any abnormal condition is observed.

Small Area Paint Touch-up

Only use a factory supplied paint kit for touch-ups. Paint is available at your local Lennox Hearth Products dealer. Never attempt to paint a hot ﬁ replace.

Do not attempt to repaint the appliance until the ﬁ nish is completely cured (see Burn-In Period on Page 4). If the surface later becomes stained or marred, it may be lightly sanded and touched up with spray paint.

Page 11

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

Front Glass Enclosure Panel, Removal and Installation

WARNING

• Do not attempt to substitute the materials used on this door, or replace cracked or broken glass.

• Handle this glass with extreme care! Glass is susceptible to damage – Do not scratch or handle roughly while reinstalling the glass door frame.

• The glass door of this appliance must only be replaced as a complete unit as provided by the manufacturer. Do not attempt to replace broken, cracked or chipped glass separately.

• Do not attempt to touch the front enclosure glass with your hands while the ﬁ replace is in use.

WARNING

Do not operate appliance with the glass front removed, cracked or broken.

AVERTISSEMENT

Ne pas utiliser l'appareil si le panneau frontal en verre n'est pas en place, est craqué ou brisé.

WARNING

Any safety screen or guard removed for servicing the appliance must be replaced prior to operating the appliance.

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 certiﬁ ed with the appliance shall be used.

Seules des portes certiﬁ ées pour cet appareil doivent être utilisées.

WARNING: 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 panels are installed. Generally the front glass enclosure panel should not be removed except to gain access to the components within the ﬁ rebox.

Removing Glass Enclosure Panels (see Figure 4 )

Remove the top louver assembly or radiant panel.

To access the glass door securing latches, ﬁ rst open the lower control compartment door (Figure 4 ) by pushing in simultaneously the left and right top corners of the door. (The door is hinged at the bottom.) Remove the bottom compartment door by sliding the hinge pin, located at the door’s left side, to the right until it disengages from the left corner post hole. Pull the door diagonally to the left, away from the ﬁ replace.

Locate the two (2) latches at the top of the control compartment and disengage them from the door frame bottom vee-ﬂ ange, pulling down on their handles to open them.

REINSTALLING THE GLASS ENCLOSURE PANEL

Retrieve the glass door. Visually inspect the gasket on the backside of the frame. Gasket surface must be clean, free of irregularities and seated ﬁ rmly.

Position the door in front of the ﬁ rebox opening with the bottom of the door held away from the ﬁ replace (Figure 4 ). Hook the top ﬂ ange of the door frame over the top of the ﬁ rebox frame.

Let the bottom of the door frame swing gently in towards the ﬁ replace ensuring that the gasket seats evenly as the door frame draws shut. Fasten the two latches located underneath the ﬁ rebox ﬂ oor to the door's vee-ﬂ ange. Close both the latches securely.

Lower Compartment Door and Hinge

Glass Door

Glass Door Frame Bottom Vee-flange

Glass Door Latch

Figure 4

Glass Door Frame Top Flange

Firebox Floor

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 12

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

INSTALL VOLCANIC STONE, GLOWING EMBERS, AND LOGS

NOTE: Turn off all electricity to the appliance before you install volcanic stone, embers and logs.

WARNING

• 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 engineered to give the appliance a safe, reliable, and attractive ﬂ ame pattern. Any attempt to use a different log set in the ﬁ replace will void the warranty and will result in incomplete combustion, sooting, and poor ﬂ ame 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, embers and logs.

•

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.

•

If logs are not installed according to the log installation instructions, ﬂ ame impingement and improper combustion could occur and result in soot and/or excessive production of carbon monoxide (CO), a colorless, odorless, toxic gas.

Glowing Embers

Figure 6

Step 1. Remove the appliance front door (see Removing Glass Enclosure panel on page 11.

Step 2. Install and volcanic stone—Sprinkle the volcanic stone in a pleasing pattern. The volcanic stone should be placed directly on top of the ﬁ rebox bottom, along the front and to the back at the right and left sides of the burner. Position any optional ceramic ﬁ ber liners before placing the volcanic stone. Logs should be positioned after the volcanic stone.

Note: 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 3. Separate the Glowing Ember (Rockwool) into pieces about the size of a

Glowing Embers

Separate into Quarter

Size (separate) Pieces

Bag of Glowing

Embers (rockwool)

Figure 5

quarter (Figure 5). Keep the pieces ﬂ uffed up, not matted. Distribute these pieces over the front surface of the burner, as shown in Figure 6. Do not use more than is necessary. When properly positioned, the Glowing Embers will cover approximately 65% of the front burner and with no appreciable gaps or openings. Ensure that the main burner ports remain uncovered by the ember material.Step 4. Placement of Logs—All top logs that rest on lower logs,

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

do so over notches, indents or nubs. Proper log placement is critical to prevent sooting. Logs should be placed in the gaps between the ﬂ ame peaks and should be positioned so they do not impinge the ﬂ ames.

Step 5. Position the individual logs as shown in Figures 7, 8, and 9. Logs should be placed in the order shown. All logs that have notches to ﬁ t over the grate tines should be positioned with these notches directly against the grate. Handle logs carefully to prevent

breakage.

Proper log placement is critical to encourage outstanding ﬂ ame appearance and prevent sooting. When positioned properly as shown, logs will be positioned between ﬂ ame peaks and will not impinge any ﬂ ames.

Refer to Figure 7 for MPD33 series appliances, Figure 8 for MPD35 and MPD40 series appliances, and Figure 9 for MPD45 series appliances.

Firebox Accessories / Parts

Cat. No. Model No. Description

88L53 FGE Bag of Glowing Embers

80L42 FDVS

Bag of Decorative Volcanic Stone

Page 13

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

MPD33 LOG PLACEMENT

Log Number Description (Stamped #)

Position the individual logs as shown below. Logs should be

placed in the order shown. Position the rear log on the brackets at the rear of the ﬁ rebox with the log's notches directly over the brackets. Position the right log (log no. 3) by inserting the pin from the rear log into the hole on its upper end. Place the left log and then the smaller left and right top logs. All logs that have notches to ﬁ t over the grate tines should be positioned with these notches directly against the grate. All top logs that rest on lower logs, do so over ﬂ attened mounting faces in the bottom logs.

Proper log and twig placement is critical to encourage outstanding ﬂ ame appearance and prevent sooting.

1 Log, Rear (39-12) 2 Log, Left (39-1) 3 Log, Right (39-2) 4 Log, Top Center (39-13) 5 Log, Top/Left (39-3 ) 6 Log, Top/Right (39-4)

Catalog Number for the entire log set: 24M15

Figure 7

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 14

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

MPD35 LOG PLACEMENT

Log

Number Description (Stamped #)

1 Log, Rear (39-5) 2 Log, Left (39-1) 3 Log, Right (39-2) 4 Log, Top Center (39-6) 5 Log, Top/Left (39-3) 6 Log, Top/Right (39-4)

Catalog Number for the entire log set: H6197

Position the individual logs as shown below. Logs should be placed in the order shown. Position the rear log on the brackets at the rear of the ﬁ rebox with the log's notches directly over the brackets. Position the right log (log no. 3) by inserting the pin from the rear log into the hole on its upper end. Place the left log and then the smaller left and right top logs. All logs that have notches to ﬁ t over the grate tines should be positioned with these notches directly against the grate. All top logs that rest on lower logs, do so over ﬂ attened mounting faces in the bottom logs.

Proper log and twig placement is critical to encourage outstanding ﬂ ame appearance and prevent sooting.

4 3

Figure 8

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 15

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

MPD40 AND MPD45 LOG PLACEMENT

Log

Number Description (Stamped #)

1 Log, Center (39-8) 2 Log, Rear (138) 3 Log, Right (39-10) 4 Log, Left (39-9) 5 Log, Top/Left (39-11) 6 Log, Top/Right (39-11)

Catalog Number for the entire log set: 24M25

Position the individual logs as shown below. Logs should be placed in the order shown. Position the center log on the burner ﬁ rst, then place the glowing embers as shown in Figure 6. Place the rear log, both the right and left, and then the smaller left and right top logs. All logs that have notches to ﬁ t over the grate tines should be positioned with these notches directly against the grate. All top logs that rest on lower logs, do so over ﬂ attened mounting faces in the bottom logs.

Proper log and twig placement is critical to encourage outstanding ﬂ ame appearance and prevent sooting.

Figure 9

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 16

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

BURNER ADJUSTMENTS

(QUALIFIED TECHNICIANS ONLY)

Flame Appearance and Sooting

Proper ﬂ ame appearance is a ﬂ ame which is blue at the base and becomes yellowish-

orange in the body of the ﬂ ame. When the appliance is ﬁ rst lit, the entire

ﬂ ame may be blue and will gradually turn yellowish-orange during the ﬁ rst 15 minutes of operation. If the ﬂ ame remains blue, or if the ﬂ ame 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 ﬂ ames. 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 combustion in the ﬂ ames and lack of combustion air entering the air shutter opening. To achieve a warm yellowish-orange ﬂ ame with an orange body that does not soot, the shutter opening must be adjusted between these two extremes.

Air Shutter Adjustment Guidelines

• If there is smoke or soot present, ﬁ rst check the log set positioning to ensure that the ﬂ ames 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.

• The more offsets in the vent system, the larger the air shutter opening will need to be.

• An appliance operated with the air shutter opened too far, may have ﬂ ames that appear blue and transparent. These weak, blue and transparent ﬂ ames are termed anemic.

• Propane models may exhibit ﬂ ames 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 ﬂ ame normalizes and the ﬂ ames do not appear sooty.

The following chart is provided to aid you in achieving the correct air shutter adjustment for your installation.

Figure 10 : MPD33

Figure 11: MPD35

Figure 12: MPD40 and MPD45

Air Shutter Adjustment Guidelines:

Amount of

Primary Air

If air shutter is closed too far

If air shutter is open too far

Flame

Color

Flame will be orange

Flame will be blue

Air Shutter

Adjustment

Air shutter gap should be increased

Air shutter gap should be decreased

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 17

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

WARNING

• Air shutter adjustment should only be performed by a qualiﬁ ed professional service technician.

•

Ensure front glass panel is

in place and sealed during adjustment.

CAUTION

• Soot will be produced if the air shutter is closed too much. Any damage due to sooting, resulting from improperly setting the air shutter, is not covered under the warranty.

• The air shutter door and nearby appliance surfaces are HOT. Exercise caution to avoid injury while adjusting ﬂ ame appearance.

BURNER FLAME ADJUSTMENTS

1. Refer to Figures 10, 11, and 12 for

proper ﬂ ame appearance. To adjust the ﬂ ame, rotate the adjustment rod toward the back or toward the front of the ﬁ replace (rod located in the lower control area). Position the air shutter to the factory setting as shown in the table in Figure 13.

2. Light appliance (follow lighting procedure

on lighting label in control compartment or in this Care and Operation Instructions).

3. Allow the burner to operate for at least

15 minutes while observing the ﬂ ame continuously to ensure that the proper ﬂ ame appearance has been achieved. If the following conditions are present, adjust accordingly.

• If ﬂ ame appears weak or sooty, adjust the air shutter, incrementally, to a more open position until the proper ﬂ ame appearance is achieved.

• If ﬂ ame remains blue, adjust the air shutter, incrementally, to a more closed position until the proper ﬂ ame appearance is achieved.

4. When satisﬁ ed that the burner ﬂ ame

appearance is normal, turn the ON/OFF control (unit-mounted or remote switch, depending on your application) to the OFF position.

5. Reinstall the lower control access panel,

then proceed to ﬁ nish the installation.

Adjusting Set Screw

Adjustment Rod Up

(minimum air

Burner Tube

Air Shutter

opening position)

Millivolt Appliance Checkout

To light the burner, rotate the gas valve control knob counterclockwise to the ON position (“ON” will be at the top side of the valve).

The pilot ﬂ ame should be steady, not lifting or ﬂ oating. Flame should be blue in color with traces of orange at the outer edge.

The top 3/8 in. (10 mm) at the pilot generator (thermopile) and the top 1/8 in. minimum (tip) of the quick drop out thermocouple should be engulfed in the pilot ﬂ ame.

The ﬂ ame should project 1 in. (25 mm) beyond the hood at all three ports (see Figure 14). Replace logs if removed for pilot inspection.

Hood Igniter Rod

Thermocouple

3/8 in. Min. (9 mm)

Pilot Nozzels

Thermopile

Figure 14

Electronic Appliance Checkout

Turn the ON/OFF control (unit-mounted or remote switch, depending on your application) to the ON position.

The pilot ﬂ ame should engulf the ﬂ ame rod, as shown in Figure 15.

Igniter

Pilot Hood

Adjustment Rod Down

(fully open position)

saG

sledoM

MPD33

MPD35

MPD40

MPD45

Figure 13

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

epyT

.taN23/1)8.O(

.porP61/3)67.4(

.taN23/1)8.O(

.porP61/3)67.4(

.taN8/1)2.3(

.porP2/1)31(

.taN8/1)2.3(

.porP2/1)31(

RETTUHS

GNITTES

Flame Rod (Sensor)

RIAYROTCAF

)mm(sehcni

Figure 15: SIT Electronic Pilot

Page 18

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

WIRING DIAGRAMS

Wiring diagrams are provided here for reference purposes only. This information is also provided on schematics attached directly to the appliance on a pullout panel located within the control compartment.

THERMOPILE

APPLIANCE- MOUNTED ON/OFF SWITCH

BK/W(1)

WALL-MOUNTED ON/OFF SWITCH (OPTIONAL) WALL RECEIVER (OPTIONAL) THERMOSTAT (OPTIONAL)

WALL MOUNTED CONFIGURATION FOR FAN SWITCH (OPTIONAL)

(OPTIONAL)

BK/W(1)

FAN

TP-TH

JUNCTION BOX

GAS VALVE

BLACK

120 V

Figure 16: Wiring Diagram— Millivolt Gas Valves

When ordering repair parts, always provide:

CAUTION: LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS APPLIANCE OPERATION.

ORDERING REPLACEMENT PARTS

A complete parts list is found at the end of this manual. Use only parts supplied from the manufacturer.

With proper care and maintenance, your appliance will provide many years of enjoyment. If you should experience any problem, ﬁ rst refer to the troubleshooting guide in this manual. If problem persists, contact your Lennox Hearth Products dealer or distributor.

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.

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.

If you encounter any problems or have any questions concerning the installation or application of this system, please contact your dealer or distributor.

LENNOX HEARTH PRODUCTS 1508 Elm Hill Pike, Suite 108

Nashville, TN 37210 visit us at www.LennoxHearthProducts.com 1-800-

655-2008

PRODUCT REFERENCE INFORMATION

We recommend that you record the important reference information about your ﬁ replace in the space provided below.

Please call Lennox Hearth Products for the phone number of your nearest Lennox Hearth Products dealer who will answer your questions or address your concerns.

Fireplace Model Number ________________________________________________

Fireplace Serial Number _________________________________________________

Date Installed _________________________________________________________

Type of Gas Used in Fireplace ____________________________________________

Dealer Name _________________________________________________________

JUNCTION BOX

120V AC

OPTIONAL

REMOTE RECEIVER

ON/OFF SWITCH

WALL SWITCH

WIRING COLOR CODE

B = BLACK BR = BROWN GY = GRAY PU = PURPLE R = RED

P/N 580491-01

SCHEMATIC REPRESENTATION ONLY

HOT

NEUTRAL

GROUND

LIMIT SWITCH

B-VENT MODELS

BL = BLUE G = GREEN O = ORANGE W = WHITE Y = YELLOW

ONLY

Figure 17: Wiring Diagram—Electronic Gas Valves

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

AC/DC POWER ADAPTOR

Y G

BATTERY HOLDER

PROFLAME VALVE

PILOT TUBE

SPARK WIRE CABLE

PILOT GROUND WIRE

ELECTRONIC PILOT ASSEMBLY

HOOD

Y G

W BL

OPTIONAL CPI SWITCH OFF (O) = INTERMITTENT PILOT MODE ON (-) = STANDING PILOT MODE

IGNITER ROD

FLAME SENSOR

PROFLAME DFC BOARD

DFC WIRE HARNESS

PILOT SENSOR CABLE

Page 19

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

ACCESSORY COMPONENTS

Economy G-Fire Remote Control System

Simple operation switches your ﬁ replace on and off. The remote receiver may be wallmounted (recommended for longer battery life) or placed in the control compartment.

G-Fire Remote Control System H8840

Digital Wall Thermostat

The wall thermostat kit provides temperature control for optimum comfort.

Wall Thermostat Kit, White H4635 DWTK

Touch-Up Paint Kit

Repair of minor scratches and discoloration of the appliance painted surfaces may be accomplished with the touch-up paint kit.

Touch-Up Paint (Black) Kit 90L73 TPK-B

Standard Remote Control System

The Model RCL (Standard) Remote Control System features a simple ON/OFF control function for the ﬁ replace. Includes a handheld transmitter, a remote receiver with wallmount coverplate, and all required hardware to install the unit. The remote receiver can be wall- or hearth-mounted.

Remote Control System (Standard) H0249 RCL

ON/OFF Wall Switch Kit

The ON/OFF wall switch may be used to control the operation of the ﬁ replace burner as an alternative to the optional unitmountable ON/OFF rocker switch. Install the wall switch in a convenient location near the ﬁ replace.

ON/OFF Wall Switch Kit 85L87 FWSK

Unit-Mountable ON/OFF Rocker Switch Kit (Millivolt systems only)

The rocker switch may be used to provide ON/OFF operation as an alternative to the optional wall switch. The rocker switch installs directly in the gas valve mounting bracket (millivolt gas valve-equipped ﬁ replaces only).

Rocker Switch Kit 80L41 FRS

Deluxe Remote Control System

The Model RCL-T (Deluxe) Remote Control System has all of the features of the standard system along with an added easy-to-read LCD screen that provides access to many enhancements, including battery power level indicator, timer, mode of operation, thermostatic display with room temperature in either F° or C°, ﬂ ame indicator, and clock. Fully programmable, the Model RCL-T allows for command over nearly all operational and temperature variables using the hand-held remote control transmitter.

Remote Control System (Deluxe) H0251 RCL-STAT

(FBK-200 Models Only)

Forced Air Blower Kit

The FBK-100 blower assembly provides constant-velocity forced-air circulation.

The FBK-200 blower assembly provides variable-speed forced-air circulation and includes a wall-mountable variable-speed switch.

The FBK-250 blower assembly provides variable-speed forced-air circulation and includes a unit-mountable variable-speed switch.

Forced Air Blower Kits:

Single Speed 80L84 FBK-100

Variable Speed with wall-mountable switch 80L85 FBK-200

Variable Speed with unit-mountable switch 80L86 FBK-250

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 20

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

ACCESSORY COMPONENTS (continued)

stiKrevuoLdelbmessA

.oNgolataC

ledoM

.oN

MPD33

MPD35

MPD40

MPD45

Black Louvers

LVR33C-2

LVR35C-2

LVR40C-2

LVR45C-2

These louvers are designed to replace the standard radiant panels that are provided with the appliance.

.oNledoM

H8839

88L24

88L25

88L26

stiKlenaPneercS

.oNledoM

MPD33

MPD35

MPD40

MPD45

.oNgolataC

.oNledoM

40L89

33GH

84M62

M53GH

94M62

M04GH

05M62

M54GH

These screen panels can be installed on the glass enclosure panel to provided protection from the hot glass surface. The screen panel kits cannot be used in conjunction with either of the arch door kits or door frame kits.

Termination Shroud

(Fits H1968)

Deluxe Termination

Guard (Fits 94L10)

Square Termination

Guard (Fits 94L10)

Termination Guard Kits

The vent termination guards may be used to cover the vent termination on the exterior of the home to minimize exposure to the hot surface of the termination.

Firebox Liner Kits

Models Catalog No. Model No. MPDT33 H0912 MBLK33T MPDR33 H8614 BLKC-MP33R

MPD35 H8595 BLKC-MP35

MPD40 H8596 BLKC-MP40

MPD45 H0915 MBLK45

The ﬁ rebox liner kits include ceramic panels of the side walls, the rear and the bafﬂ e of the ﬁ rebox. The panels have brick-like features in relief.

Termination Guard Kits (all models)

Cat. No. Model No. Description

H5820 4.5HTSK Termination Shroud

87L02 SV4.5HGS Termination Guard,

Deluxe

17M52 SV4.5HGS-1 Termination Guard,

Square

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 21

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

ACCESSORY COMPONENTS (continued)

Style View Doors

Style View doors come in three styles. They are easy to install onto the standard glass door frame. Includes heavy-duty magnetic door latches and functional twin-pane doors.

Arch Design

Arch Pane Design

ARCH DESIGN KITS

Cat. No. Model Description Model Series

H8769 AD35B-2 35 in. Arch Doors, Black H8770 AD35SP-2 35 in. Arch Doors, Satin Pewter H8771 AD40B-2 40 in. Arch Doors, Black H8772 AD40SP-2 40 in. Arch Doors, Satin Pewter H8773 AD45B-2 45 in. Arch Doors, Black H8774 AD45SP-2 45 in. Arch Doors, Satin Pewter

ARCH PANE DESIGN KITS

H8775 APD35B-2 35 in. Arch Pane Doors, Black H8776 APD35SP-2 35 in. Arch Pane Doors, Satin Pewter H8777 APD40B-2 40 in. Arch Pane Doors, Black H8778 APD40SP-2 40 in. Arch Pane Doors, Satin Pewter H8779 APD45B-2 45 in. Arch Pane Doors, Black H8780 APD45SP-2 45 in. Arch Pane Doors, Satin Pewter

MPD35

MPD40

MPD45

MPD35

MPD40

MPD45

Square Pane Design

SQUARE PANE DESIGN KITS

H8781 SPB35B-2 35 in. Sq. Pane Doors, Black H8782 SPB35SP-2 35 in. Sq. Pane Doors, Satin Pewter H8783 SPB40B-2 40 in. Sq. Pane Doors, Black H8784 SPB40SP-2 40 in. Sq. Pane Doors, Satin Pewter H8785 SPB45B-2 45 in. Sq. Pane Doors, Black H8786 SPB45SP-2 45 in. Sq. Pane Doors, Satin Pewter

MPD35

MPD40

MPD45

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 22

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

ACCESSORY COMPONENTS (continued)

Grille Kits

The distinctive sunrise design grille is available in black or satin pewter ﬁ nish. This grille may be used to replace the standard radiant panels or optional louvered panels. Upper and lower grilles are sold seperately.

“Sunrise” Grille Kits

Cat. No. Model Description Model Series

H3565 SUGK35C 35 in. Sunrise Upper Grille Kit, Black

SUGK35SP

H3567

H3569 SLGK35C 35 in. Sunrise Lower Grille Kit, Black

H3571

SLGK35SP

H3573 SUGK40C 40 in. Sunrise Upper Grille Kit, Charcoal

SUGK40SP

H3575 H3577 SLGK40C 40 in. Sunrise Lower Grille Kit, Black H3579

SLGK40SP

H3581 SUGK45C 45 in. Sunrise Upper Grille Kit, Black

SUGK45SP

H3583 H3585 SLGK45C 45 in. Sunrise Lower Grille Kit, Black

H3587

SLGK45SP

35 in. Sunrise Upper Grille Kit, Satin Pewter

35 in. Sunrise Lower Grille Kit, Satin Pewter

40 in. Sunrise Upper Grille Kit, Satin Pewter

40 in. Sunrise Lower Grille Kit, Satin Pewter

45 in. Sunrise Upper Grille Kit, Satin Pewter

45 in. Sunrise Lower Grille Kit, Satin Pewter

MPD35

MPD40

MPD45

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 23

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

MAINTENANCE SCHEDULE

Annually (Before the onset of the Burning Season)

Maintenance Task Accomplishing Person Procedure

Inspect and Clean Burner, Logs and Controls

Check Flame Patterns and Flame Height

Inspect and Clean Pilot and Burner

Check Vent System

Appliance Checkout

Qualiﬁ ed Service Technician

Inspect valve and ensure it is properly operating. Check piping for leaks. Vacuum the control compartment, ﬁ replace logs and burner area.

Refer to Figures 10 (MPD33), 11 (MPD35) or 12 (MPD40 & MPD45) on page 16 and verify the ﬂ ame pattern and height displayed by the appliance conforms to the picture. Flames must not impinge on the logs. Ensure ﬂ ames are steady (not lifting or ﬂ oating).

Refer to Figure 13 (SIT) or Figure 14 (Honeywell) on page 17. Remove any surface build-up on pilot and burner assembly. Wipe the pilot nozzles, igniter/ﬂ ame rod and hood. Ensure the pilot ﬂ ame engulfs the ﬂ ame sensor as shown. Inspect the vent system at the top and at the base (within the ﬁ rebox) for signs of blockage or obstruction. Look for any signs of dislocation of the vent components (reconnect or replace as necessary).

Perform the appropriate appliance checkout procedure detailed in this manual.

Replace Glowing Embers

Homeowner/Qualiﬁ ed Services Technician

Remove old ember materials and vacuum the rockwool placement area. Place new rockwool as described in this document.

Periodically (After the Burning Season)

Maintenance Task Accomplishing Person Procedure

Clean Firebox Interior

Homeowner

Carefully remove logs, glowing embers and decorative volcanic stone. Vacuum out interior of the ﬁ rebox. Clean ﬁ rebox walls and log grate. Replace logs, glowing embers and volcanic stone as detailed in this manual.

Check Flame Patterns and Flame Height

Homeowner

Refer to Refer to Figures 10 (MPD33),

11 (MPD35) or 12 (MPD40 & MPD45) on Page 16 and verify the ﬂ ame pattern and height

displayed by the appliance conforms to the picture. Flames must not impinge on the logs.

Check Vent System

Homeowner

Inspect the vent system at the top and at the base (within the ﬁ rebox) for signs of blockage or obstruction. Look for any signs of dislocation of the vent components (reconnect or replace as necessary).

Clean Front Glass Enclosure Panel

Homeowner

Clean as necessary following the directions provided in this manual. DO NOT TOUCH OR ATTEMPT TO CLEAN GLASS WHILE HOT.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 24

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

OUT

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 by a piezo

igniter. When lighting the pilot, follow these instructions exactly.

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.

WHAT TO DO IF YOU SMELL GAS:

• Do not try to light any appliance.

• Do not touch any electric 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.

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, don’t try to repair it, call a qualified service technician. Force or attempted repair may result in a fire or explosion.

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.

LIGHTING INSTRUCTIONS

1. STOP! Read the safety information above on this label.

2. (If applicable) Set the thermostat to lowest setting. Turn wall on/off switch, unit mounted on/off switch or remote control switch "OFF."

3. Turn OFF all electric power to the appliance.

4. Access the control compartment.

5. Push in gas control knob slightly and turn clockwise to "OFF."

NOTE: Knob cannot be turned from "PILOT" to "OFF" unless knob is

pushed in slightly. Do Not force.

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 on this label. If you don't smell gas, go to the next step.

7. Find pilot—located in firebox on the same plane as the top of the burner.

8. Turn knob on gas control counterclockwise to "PILOT."

9. Push in control knob all the way and hold in. Immediately light the pilot by triggering the piezo 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 9.

• If knob does not pop up when released, stop and immediately call your service technician or gas supplier.

• If the pilot will not stay lit after several tries, turn the gas control knob to "OFF" and call your service technician or gas supplier.

10. Turn gas control knob counterclockwise to "ON."

11. Close control compartment.

12. (If applicable) Turn on all electrical power to the appliance.

13. (If applicable) Set thermostat to desired setting. Turn wall on/off switch, unit mounted on/off switch or remote control switch "ON."

SIT

Robertshaw

Gas Control Valves

OUT

Gas Control Knobs

PILO

OFF

PILOT

IN OUT

Pilot Assemblies

TPTH TP TH

TO TURN OFF GAS TO APPLIANCE

1. (If applicable) Set the thermostat to lowest setting. Turn wall on/off switch, unit mounted on/off switch or remote control switch "OFF."

Turn OFF all electric power to the appliance, if service is to be performed.

Access the control compartment.

Push in gas control knob slightly and turn clockwise to "OFF." Do not force.

5. Close the main line gas shut-off valve.

6. Close control compartment.

WARNING

HOT GLASS WILL CAUSE BURNS.

DO NOT TOUCH GLASS UNTIL COOLED.

NEVER ALLOW CHILDREN TO TOUCH GLASS.

P/N 62L2901_4

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 25

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

OUT

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.

A.Cet appareil est muni d’une veilleuse qui doit être allumée

avec un allumeur piézo-électrique. Respectez les instructions ci-dessous à la lettre.

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.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ :

• Ne pas tenter d’allumer d’appareil.

• Ne touchez à aucun interrupteur ; ne pas vous servir des téléphones se trouvant dans le bâtiment.

• Appelez immédiatement votre fournisseur de gaz depuis un voisin. Suivez les instructions du fournisseur.

• 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 tentez 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.

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.

INSTRUCTIONS D’ALLUMAGE

1. ARRÊTEZ ! Lisez les instructions de sécurité sur la portion supérieure de cette étiquette.

2. (Si applicable) Réglez le thermostat à la température la plus basse. Tournez l’interrupteur murale, l’interrupteur sur l’unité ou le contrôle à distance à "OFF. "

3. Coupez l’alimentation électrique de l’appareil.

4. Accédez au compartiment de contrôle.

5. Enfoncez légèrement le bouton de réglage du gaz et tournez-le dans le sens des aiguilles d’une montre jusqu’à la position d’arrêt “OFF”.

Remarque: Il est impossible de tourner le bouton de “PILOT” à “OFF” à

moins qu’il ne soit légèrement enfoncé. Ne le forcez pas.

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 de cette étiquette. S’il n’y a pas d’odeur de gaz, passez à l’étape suivante.

7. Trouver le pilote –

Situé dans l’âtre sur la même surface que le dessus du

brûleur.

8. Tournez le bouton de contrôle sur la valve à gaz dans le sens antihoraire

vers "Pilote".

9. 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 pendant environ 90 secondes après l’allumage de la veilleuse. Relâchez le bouton et il sortira subitement. La veilleuse devrait rester allumée. Si

elle s’éteint, répétez les étapes 5 à 8

inclusivement.

• Si la manette ne se soulève pas d’elle-même lorsqu’on la relâche, arrêter et appeler immédiatement un technicien qualifié ou le fournisseur de gaz.

• Si la veilleuse ne reste pas allumée après plusieurs tentatives, réglez la manette d’admission du gaz à la position OFF et appelez un technicien qualifié ou le fournisseur de gaz.

10. Tournez le bouton de réglage du gaz en sens inverse des aiguilles d’une montre jusqu’à sa position de marche “ON”.

11. Fermer le compartiment de contrôle.

12. (Si applicable) Mettez l’appareil sous tension.

13. (Si applicable) Réglez le thermostat à la température désirée.

l’interrupteur murale, l’interrupteur sur l’unité ou le contrôle à distance à "ON."

SIT

Robertshaw

Vanne Gaz Millivolt

Bouton de réglage du gaz

PILOT

OFF

PILOT

OUT

O L

IN OUT

Tournez

Millivolt Pilot

TPTH TP TH

COMMENT COUPER L’ADMISSION DE GAZ DE L’APPAREIL

1. (Si applicable) Réglez le thermostat à la température la plus basse. Tournez l’interrupteur murale, l’interrupteur sur l’unité ou le contrôle à distance à "OFF. "

Coupez l’alimentation électrique de l’appareil s’il faut procéder à l’entretien.

Accédez au compartiment de contrôle.

4. Enfoncez légèrement le bouton de réglage du gaz et tournez-le dans le sens des aiguilles d’une montre jusqu’à la position d’arrêt “OFF”. Ne forcez pas le bouton.

5. Fermer la valve de gaz principale.

6. Fermer le compartiment de contrôle.

AVERTISSEMENT

UNE SURFACE VITRÉE CHAUDE PEUT CAUSER DES BRÛLURES.

LAISSER REFROIDIR LA SURFACE VITRÉE AVANT D'Y TOUCHER.

NE PERMETTEZ JAMAIS À UN ENFANT DE TOUCHER LA SURFACE VITRÉE.

P/N 62L3001_3

REMARQUE : LES SCHÉMAS ET LES ILLUSTRATIONS NE SONT PAS À L’ÉCHELLE

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 26

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

LIGHTING 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.

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.

WHAT TO DO IF YOU SMELL GAS:

• Do not try to light any appliance.

• Do not touch any electric 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.

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.

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.

OPERATING INSTRUCTIONS

1. STOP! Read the safety information above on this label.

2. Read the Care and Operation manual including the section on "Remote Control System," (if applicable).

3. Slide the switch on the receiver, wall switch or ON/OFF switch to "OFF."

4. Turn "OFF" all electric power to the appliance. Note: The control may have a battery backup (remove batteries, if installed).

5. This appliance is equipped with an ignition device which automatically lights the pilot. Do not try to light the pilot by hand.

6. Wait five (5) minutes to clear out any gas. If you then smell gas, STOP! Follow “B” in the safety information above on this page. If you do not smell gas, go to the next step.

7. Turn on all electric power to the appliance. Note: The control may have a battery backup (install batteries, if applicable).

8. Slide the switch on the receiver to REMOTE or ON/OFF switch / wall switch to ON.

9. (if applicable) Press ON/OFF button on remote control transmitter to "ON."

10. (if applicable) Set thermostat on remote control to desired setting.

11. If the appliance will not operate, follow the instructions "To Turn Off Gas To Appliance" and call your service technician or gas supplier.

Electronic Gas Control

Electronic Pilot Assembly

Valve—SIT

TO TURN OFF GAS TO APPLIANCE

1. Slide the switch on the receiver, wall switch or ON/OFF switch to "OFF.

2. (if applicable) Press ON/OFF button on remote control transmitter to "OFF."

WARNING

HOT GLASS WILL CAUSE BURNS.

DO NOT TOUCH GLASS UNTIL COOLED.

NEVER ALLOW CHILDREN TO TOUCH GLASS.

P/N 580491-01, REV. 00

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

3. Turn off all electric power to the appliance if service is to be performed. Note: The control may have a battery backup (remove batteries, if installed).

4. Close the main line gas shut-off valve.

Page 27

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

INSTRUCTIONS D’ALLUMAGE—ELECTRONIC

POUR PLUS DE SÉCURITÉ, LIRE AVANT DE METTRE EN MARCHE

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.

A. Cet appareil est muni d’un dispositif d’allumage qui allume

automatiquement la veilleuse. Ne tentez pas d’allumer la veilleuse manuellement.

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.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ :

• Ne pas tenter d’allumer d’appareil.

• Ne touchez à aucun interrupteur; ne pas vous servir des téléphones se trouvant dans le bâtiment.

• Appelez immédiatement votre fournisseur de gaz depuis un

voisin. Suivez les instructions du fournisseur.

• Si vous ne pouvez rejoindre le fournisseur, appelez le service des incendies.

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.

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.

INSTRUCTIONS DE MISE EN MARCHE

1. ARRÊTEZ ! Lisez les avertissements de sécurité à l’endos de cette étiquette.

2. Lisez le manuel d’utilisation et d’entretien incluant la section « Système de télécommande » (si applicable).

3. Placez l’interrupteur mural ou "on/off" en position "off."

4. Coupez l’alimentation électrique de l’appareil. Note: Le contrôleur peut avoir une batterie de secours (retirer les batteries au besoin).

5. Cet appareil est muni d’un dispositif d’allumage qui allume automatiquement la veilleuse. Ne tentez pas d’allumer la veilleuse manuellement.

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 a pas d’odeur de gaz, passez à l’étape suivante.

7. Mettez l’appareil sous tension. Note: Le contrôleur peut avoir une batterie de secours (installer les batteries au besoin).

8. Placez l’interrupteur du récepteur en position “REMOTE” (ou l’interrupteur mural en position ON).

9. (Si applicable) Appuyez sur le bouton “ON/OFF” pour sélectionner “ON”.

10. (Si applicable) Ajustez le thermostat sur la télécommande à l’ajustement désiré.

11. Si l’appareil ne se met pas en marche, suivez les instructions intitulées « Comment couper l’admission de gaz de l’appareil » et appelez un technicien qualifié ou le fournisseur de gaz.

Valve électronique—SIT

Module de veilleuse

électronique

COMMENT COUPER L’ADMISSION DE GAZ DE L’APPAREIL

1. Placez l’interrupteur mural ou "on/off" en position "off."

2. (Si applicable) Sélectionnez OFF sur le récepteur.

AVERTISSEMENT

UNE SURFACE VITRÉE CHAUDE PEUT CAUSER DES BRÛLURES.

LAISSER REFROIDIR LA SURFACE VITRÉE AVANT D'Y TOUCHER.

NE PERMETTEZ JAMAIS À UN ENFANT DE TOUCHER LA SURFACE VITRÉE.

P/N 580456-01, REV. 00

REMARQUE : LES SCHÉMAS ET LES ILLUSTRATIONS NE SONT PAS À L’ÉCHELLE

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

3. Coupez l’alimentation électrique de l’appareil s’il faut procéder à l’entretien. Note: Le contrôleur peut avoir une batterie de secours (retirer les batteries au besoin).

4. Fermer la valve de gaz principale.

Page 28

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • 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) is in the

“ON” position.

Note: Valve system troubleshooting should only be performed by a qualiﬁ ed service technician.

1. Spark igniter will not light

pilot after repeated triggering of igniter button.

2. Pilot will not stay lit after

carefully following the lighting instructions.

3. Pilot burning, no gas to

burner, Valve knob “ON,” Wall Switch “ON.”

POSSIBLE CAUSES

A. Defective igniter

(no spark at electrode).

B. Defective or misaligned electrode

at pilot (spark at electrode).

C. Gas supply pressure errant.

D. Pilot oriﬁ ce plugged.

A. Defective pilot generator

(thermocouple).

A. Wall switch or wires defective.

CORRECTIVE ACTIONSYMPTOM

Check for spark at electrode and pilot; if no spark and electrode wire is properly connected, replace igniter.

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 light – check gap at electrode and pilot – should be 1/8 in. to have a strong spark. If gap measures 1/8 in., replace pilot (Figure 14 on page 17).

Check inlet gas pressure. It should be within the limits as marked on the rating plate.

Clean or replace pilot oriﬁ ce.

Check pilot ﬂ ame, it must impinge on thermocouple (Figure 14 on page 17). Clean and/or adjust pilot for maximum ﬂ ame impingement on thermocouple. Ensure that the connection between the valve and thermocouple are tight and secure.

Check wall switch and wires for proper connections. Jumper wire across terminals at wall switch, if burner comes on, replace defective wall switch. If okay, jumper wires across wall switch wires at valve, if burner comes on, wires are faulty or connections are bad.

4. Frequent pilot/burner outage

problem.

B. Thermopile may not be generating

sufﬁ cient millivoltage.

C. Plugged burner oriﬁ ce.

A. Pilot ﬂ ame may be too low or

blowing (high) causing the pilot/ valve safety to drop out.

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 speciﬁ ed minimum.

Check burner oriﬁ ce for stoppage and remove.

Clean and/or adjust pilot ﬂ ame for maximum ﬂ ame impingement on thermocouple (Figure 14 on page 17).

Page 29

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • 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) is in the

“ON” position.

Note: Valve system troubleshooting should only be performed by a qualiﬁ ed service technician.

SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION

1. Nothing happens

when the ﬁ replace is turned ON/OFF.

2. The main burner

does not light and the igniter is sparking.

A. Remote control system is

not functioning properly.

B. Unit is not receiving power.

C. Gas is not reaching the

ﬁ replace.

A. Gas is not reaching the

ﬁ replace.

B. Unit is not receiving power.

To use the remote control system, the wall switch plate must be set to REMOTE. Manually operate the ﬁ replace using the wall switch (ON/OFF). Replace the batteries in the handheld remote and/or behind the wall switchplate. Check/replace batteries behind the wall switchplate. Replace unit battery backup. Check building circuit breakers to ensure power is on to the ﬁ replace. Check the gas supply and gas shutoff valves (call a service technician, if required).*

Check the gas supply and gas shutoff valves (call a service technician, if required).*

Replace unit battery backup.

3. The burner lights,

then immediately goes out.

4. Soot is present on

the glass and panels.

5. Poor ﬂ ame and/or

blue ﬂ ame.

C. Loose wires to the valve. D. Loose wires to ignition

module.

E. Air in the gas line. A. Gas is not reaching the

ﬁ replace.

B. Loose wires to the valve

or ignition module.

C. Pilot ﬂ ame is not engulﬁ ng

the sensor.

D. Obstructed vent system. A. Initial ﬁ replace operation.

B. Excessive ﬂ ame

impingement on panels and ﬁ replace ceiling.

C. Improper air shutter

opening.

D. Improper vent restrictor

setting.

Door seal is not properly aligned, causing gaps and air leaks.

Check control compartment for any obvious loose wiring (call a service technician). Check control compartment for any obvious loose wiring (call a service technician).

Purge gas line of air (call a service technician). Check the gas supply and gas shutoff valves (call a service technician, if required).*

Check the gas supply and gas shutoff valves (call a service technician, if required).*

Call a service technician.

Call a service technician. A white ﬁ lm may develop on the glass during the ﬁ rst few ﬁ res as part of the burn-in

process.

The ﬁ rst few times you use the ﬁ replace, clean the glass after each use (AFTER THE GLASS HAS COMPLETELY COOLED); otherwise, the white ﬁ lm will bake onto

the glass and become difﬁ cult to remove.

See glass cleaning instructions in the MAINTENANCE section of this manual. Properly position the media as detailed in the instructions provided with the Media Kit.

Open the air shutter by adjusting the air shutter adjustment lever according to the instructions in this manual.

Remove and realign the door so the gasket seal is fully engaged around the door frame.

*The unit may have multiple gas supply shutoffs (the main gas supply valve in the house, the gas supply valve in the ﬁ replace control compartment, and/or an additional shutoff valve near the ﬁ replace).

Page 30

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

REPLACEMENT PARTS LIST

Item No. Description

1 Hood H4574 1 97K51 1 97K52 1 2 Radiant Panel Assembly, Upper

2a Louvered Panel Assembly, Upper H4577 1

3 Radiant Panel Assembly, Lower H8664* 1

3a Louvered Panel Assembly, Lower H4578* 1

4 Enclosure, Glass Front (Complete) H8142 1

5 Nameplate (Brand) 12L15 1 12L15 1 12L15 1 12L15 1 6 Door Latch Spring H1264 2 H1264 2 H1264 2 H1264 2 7 Catch, Door, Magnetic 69L31 2 69L31 2 69L31 2 69L31 2 8 Log Set (Complete) 24M15 1 H6197 1 24M25 1 24M25 1

9 Burner Assembly H8585 1 H8585 1 H8587 1 H8587 1 10 Grate Assembly H6526 1 H6526 1 H6314 1 H6314 1 11 Oriﬁ ce, Main Burner—Natural Gas 99K74 1 60J80 1 99K76 1 24M10 1 11 Oriﬁ ce, Main Burner—LP Gas 99K78 1 19L52 1 21L01 1 37G00 1 12 Bag Of Embers (Rockwool) 88L53 1 88L53 1 88L53 1 88L53 1 13 Bag Of Decorative Volcanic Stone 80L42 1 80L42 1 80L42 1 80L42 1 14 Gas Line Flexible Connector 93L32 1 93L32 1 93L32 1 93L32 1

MPD33 MPD35 MPD40 MPD45

Part No. Qty. Part No. Qty. Part No. Qty. Part No. Qty.

97K53

H8660

H8661

H6337 H8665* H6344*

H6554

1 1 1 1 1

H8662

H2727 H8666* H6345*

H8122

1 1 1 1 1

H8663

H3146 H8667* H6346*

H6225

1 1 1 1 1 1

Gas Controls—SIT Millivolt

Item

Description

No.

15 Gas Valve, SIT H1657 1 88J53 1 16 Piezo Igniter 10K86 1 10K86 1 17 Pilot Assembly 69L17 1 69L18 1 18 Pilot Generator 60J79 1 60J79 1 19 Thermocouple 74L57 1 74L57 1 20 Pilot Tube 74L56 1 74L56 1 21 Electrode And Cable H6212 1 H6212 1 22 Pilot Shield H6347 1 H6347 1

Natural Gas Propane Gas

Part No. Qty. Part No. Qty.

Gas Controls—SIT Electronic

Item

Description

No.

23 Gas Valve, SIT H8562 1 H8594 1 24 Pilot Assembly H7268 1 H7269 1 25 Transformer H8006 1 H8006 1 26 Pilot Shield H3737 1 H3737 1

DIgital Flame

Control Module 28 Battery Holder H8803 1 H8803 1 29 DFC Wiring Harness H8601 1 H8601 1 30 CPI On/Off Switch 27K30 1 27K30 1

Natural Gas Propane Gas

Part No. Qty. Part No. Qty.

H7272 1 H7272 1

* Lennox Nameplate Logo, 12L15, is not included.

Contact a 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.

WARNING

Failure to position the parts in accordance with these diagrams or failure to use only parts speciﬁ cally approved with this appliance may result in property damage or personal injury.

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 spéciﬁ quement approuvées avec cet appareil sont utilisées.

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 31

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

REPLACEMENT PARTS

40/45

33/35

40/45

33/35

40/45

33/35

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Page 32

LENNOX HEARTH PRODUCTS • MERIT PLUS® DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • CARE AND OPERATION INSTRUCTIONS

Lennox Hearth Products reserves the right to make changes at any time, without notice, in design, materials, speciﬁ cations, prices and also to discontinue colors, styles and products. Consult your local distributor for ﬁ replace code information.

LENNOX®, the LENNOX design, DAVE LENNOX, the image of DAVE LENNOX and other related LENNOX marks are registered or common law trademarks of Lennox Industries Inc. and are used with permission.

P/N 506017-06 Rev. A 08/2012

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

1508 Elm Hill Pike, Suite 108 • Nashville, TN 37210

Lennox MPDT33RPM, MPDBSRNM, MPD35RPM, MPD40CNM, MPD40RNM Care And Operation Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual