CARE AND OPERATION INSTRUCTIONS B-Vent Gas Fireplaces MLBV 35/40 Models P/N 506017-03 Rev. B 06/2011 MODELS This manual is one of a set of two supporting this product. Refer to P/N 506015-04 for Installation Instructions. Ce manuel est disponible en francais, simplement en faire la demande. Numéro de la pièce 506223-22. MILLIVOLT: MLBV-35NM MLBV-35PM WHAT'S INSIDE Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety and Your Fireplace . . . . .
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • 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 fireplace.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS [FRENCH] La sécurité et votre foyer Toutes les parties de votre foyer Lennox Hearth Products deviennent EXTRÊMEMENT CHAUDES ! Afin d'éviter de vous brûler gravement ou de vous blesser, installez une grille ou une barrière physique pour empêcher tout contact direct avec la vitre.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Important Safety Information L'information de sûreté importante 1. WARNING: Do not operate appliance with the glass front removed, cracked or broken. Replacement of the glass should be done by a licensed or qualified service person . 1. AVERTISSEMENT. Ne pas utiliser l’appareil si le panneau frontal en verre n’est pas en place, est craqué ou brisé.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS HOMEOWNER’S INSTRUCTIONS: ATTACHING “SAFETY-IN-OPERATION” WARNINGS Attaching “Safety-in-Operation” Warnings Apposition des mises en garde relatives à la sécurité d’utilisation Colocación de advertencias de seguridad en operación Your fireplace has been furnished with safety instruction labels that are to be affixed to the operation and control point of the fireplace.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Appliance Installation, Service, and Maintenance Notices IMPORTANT: Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information, consult a qualified installer, service agency or the gas supplier.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS GENERAL INFORMATION The fireplace models covered in this manual are B-vented decorative gas appliances designed for residential application. Millivolt appliances have a millivolt gas control valve with piezo ignition system. Electronic appliances have a battery backedup electronic intermittent pilot system.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Operation and care of your appliance Gas Controls / Control Compartment Access 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.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Appliance Controls ON/OFF Control Operation of millivolt and electronic gas control systems differs. Before lighting and operating your appliance, determine whether you have a millivolt or electronic appliance, and then familiarize yourself with the location of the Gas Control Valve and Gas Shut-Off Valve on your specific appliance. • For general control location, see Figure 1.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS MAINTENANCE INSTRUCTIONS Clean Glass Enclosure Panel Order Replacement Logs (See Maintenance Schedule, Page 26) (Refer to “Removing and Installaing the Glass Enclosure Panel” on Page 11). Note: Clean glass after first two weeks of operation (after burn-in period is over) and then only when necessary and ONLY WHEN THE APPLIANCE IS COOL. Wipe surface with clean, dampened, soft cloth.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS RemovING and INSTALLING THE Glass enclosure panel 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.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Installing Volcanic Stone, Glowing Embers (Rockwool), and Logs NOTE: Turn OFF all electricity to the fireplace before installing volcanic stone, glowing embers, or logs. 1. Remove the front glass enclosure panel (see “Removing and Installing the Glass Enclosure Panel,” on previous Page). 2. Install ceramic brickaded panel liners. 3. Install decorative volcanic stone. Refer to Figure 7.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS MLBV-35 Log Placement INSTRUCTIONS 4 Left Cross Log 1 Rear Log Note: 5 Right Cross Log • Ceramic fiber logs are FRAGILE! Handle carefully to prevent breakage. • Install volcanic stone and glowing embers BEFORE installing logs. • To prevent sooting, make sure logs do not cover any burner openings. MLBV Firebox Accessories/Parts 2 3 Left Front Log Left Rear Log Bracket Cat.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • 35”/40” MLBV MODELS • CARE AND OPERATION INSTRUCTIONS MLBV-40 Log Placement INSTRUCTIONS 4 Left Cross Log 1 Rear Log Note: 5 Right Cross Log • Ceramic fiber logs are FRAGILE! Handle carefully to prevent breakage. • Install volcanic stone and glowing embers BEFORE installing logs. • To prevent sooting, make sure logs do not cover any burner openings.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Burner AIR SHUTTER Adjustments (QUALIFIED TECHNICIANS ONLY) Flame Appearance and Sooting Proper flame appearance is a flame which is blue at the base and becomes yellowish-orange in the body of the flame. When the appliance is first lit, the entire flame may be blue and will gradually turn yellowish-orange during the first 15 minutes of operation.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Burner Air Shutter Adjustment Procedure WARNING • Air shutter adjustment should only be performed by a qualified professional service technician. • Ensure front glass panel are in place and sealed during adjustment. CAUTION • Soot will be produced if the air shutter is closed too much.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Spillage Test Lintel Screw Hole in Cabinet Top After appliance installation, perform this spillage test to verify proper venting conditions: 1 - Place unit in its normally-operated condition, that is, with the glass enclosure panel in place. Right Side Scoop 2 - Close all doors and windows in the room. Turn on all exhaust fans in the house. 3 - Light the appliance.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS ORDERING Replacement parts PRODUCT REFERENCE INFORMATION A complete parts list is found at the end of this manual. Use only parts supplied from the manufacturer. We recommend that you record the important reference information about your fireplace in the space provided below. With proper care and maintenance, your appliance will provide many years of enjoyment.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS ELECTRONIC IGNITION WIRING DIAGRAM Pilot Burner Assembly J-Box Wiring BK W G 120 VAC IGNITER MODULE 3V NOTES: 1. If any of the original wire as supplied must be replaced, use Type AWM 105°C - 18 gage wire ONLY. 2. 120 VAC, 60 Hz - Less than 3 Amps. CAUTION: label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Accessory Components (continued) Style View Screen Doors These decorative but functional twin-pane screen doors provide a barrier to prevent direct contact with the hot glass surface of the fireplace front enclosure panel. Style View Screen Doors easily install over the standard glass enclosure panel with heavy-duty magnet door latches (no hardware required).
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Accessory Components (continued) PA I N T Ceramic Brickaded Panel Liner Kit Ceramic Brickaded Panel Liner Kits contain a complete set of ceramic panels with brick-like features and detail. Ceramic Brick Liner Kits Cat. No. Model No.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Lighting Instructions – Millivolt GAS VALVE FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A.This appliance has a pilot which must be lighted by a piezo igniter. When lighting the pilot, follow these instructions exactly.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS INSTRUCTIONS D’ALLUMAGE – VANNE GAZ Millivolt POUR PLUS DE SÉCURITÉ, LIRE AVANT D’ALLUMER AVERTISSEMENT. Quiconque ne respecte pas à la lettre les instructions dans la présente notice risque de déclencher un incendie ou une explosion entraînant des dommages, des blessures ou la mort. A.Cet appareil est muni d’une veilleuse qui doit être allumée avec un allumeur piézo-électrique.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • 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.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • 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.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS MAINTENANCE SCHEDULE Annually (before burning season) MAINTENANCE TASK ACCOMPLISHING PERSON PROCEDURE Inspect/Clean Burner, Logs, and Controls Qualified Service Technician Inspect valve and ensure it is properly operating. Check piping for leaks. Vacuum the control compartment, logs, and burner area.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Troubleshooting GUIDE – Millivolt control System Note: Before troubleshooting the gas control system, make sure the external gas shut off valve (located at gas supply inlet) and wall switch (if applicable) are in the “ON” position. Important: Valve system troubleshooting should only be performed by a qualified service technician. SYMPTOM 1.
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Troubleshooting GUIDE – Electronic Ignition System Note: Before troubleshooting, make sure the appliance main line gas shut-off valve, gas control valve, and wall switch (if applicable) are in the “ON” position. Important: Valve system troubleshooting should only be performed by a qualified service technician. Symptom Possible causes Corrective action 1.
Dexen Gas Dexen Gas Controls Controls 16 6 LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES Dexen Gas • MODELS MLBV-35, MLBV-40 • CARE16AND OPERATION INSTRUCTIONS Dexen Gas Controls Controls Replacement Parts List Description Dexen Dexen GasGas 1 Controls 2 Controls 10 10 28 16 16 Hood Lower Control Compartment Panel H7262 Enclosure, Glass Front (Complete) H7264 4 Door Latch Spring H1264 5 Log Set (Complete) 6 Burner Assembly H7717 7 Orifice, Main Burner - Natural Gas H123
LENNOX HEARTH PRODUCTS • MERIT® SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS Lennox Hearth Products reserves the right to make changes at any time, without notice, in design, materials, specifications, prices and also to discontinue colors, styles and products. Consult your local distributor for fireplace code information. Printed in U.S.A. © 2010 Lennox Hearth Products P/N 506017-03 Rev.