INSTALLATION INSTRUCTIONS Montebello® Direct Vent Gas Fireplaces MODELS MILLIVOLT: P/N 850026M Rev. G 06/2011 LSM40MN-2 LSM40MP-2 This manual is one of a set of two supporting this product. Refer to P/N 875027M for Care and Operation Instructions. Ce manuel est disponible en francais, simplement en faire la demande. Numéro de la pièce 850026CF. LSM45MN-2 LSM45MP-2 ELECTRONIC: LSM40EN-2 LSM45EN-2 Portland INSTALLER: Leave this manual with the appliance.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS TABLE OF CONTENTS Packaging..........................................Page Introduction.......................................Page General Information...........................Page Massachusetts and New York Requirements.................................Page Cold Climate Insulation......................Page Manufactured Home Requirements...Page Location...............................
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS WARNING 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 • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Inlet Gas Supply Pressure (all models) Fuel # Minimum Maximum Natural Gas 5.5" WC (1.37 kPa) 10.5" WC (2.61 kPa) Propane 11.0" WC (2.74 kPa) 13.0" WC (3.23 kPa) Table 2 Manifold Gas Supply Pressure (all models) Fuel # Low High Natural Gas (Lo) 2.2" WC (.55 kPa) (Hi) 3.5" WC (.87 kPa) Propane (Lo) 6.3" WC (1.57 kPa) (Hi) 10.0" WC (2.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Cet appareil peut être installé cómme du matériel d'origine dans une maison préfabriquée (É.U. seulement) ou mobile et doit être installé selon les instructions du fabricant et conformément à la norme Manufactured Home Constructions and Safety, Title 24 CFR, Part 3200 aux Unis ou à la norme Can/CSA-Z240 Série MM, Maisons mobiles au Canada.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS VENT TERMINATION CLEARANCES These instructions should be used as a guideline and do not supersede local codes in any way. Install vent according to local codes, these instructions, the current National Fuel Gas Code (ANSI-Z223.1) in the USA or the current standards of CAN/CSA-B149.1 in Canada.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Exterior HORIZONTAL Vent TERMINATION Clearance Requirements * See Item D in the Text Below. Center Line of Termination Exterior Wall *18” 24" Horizontal Termination NOTE: Local Codes Or Regulations May Require Different Clearances. Inside Corner Detail NOTE: Location Of The Vent Termination Must Not Interfere With Access To The Electrical Service.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS MINIMUM CLEARANCES TO COMBUSTIBLES The appliance is approved with zero clearance to combustible materials on all sides (as detailed in Table 5), with the following exception: When the unit is installed with one side flush with a wall, the wall on the other side of the unit must not extend beyond the front edge of the unit.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS WARNING Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this appliance may result in property damage or personal injury.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS fireplace AND FRAMING specifications Framing Dimensions Models LSM40-2 LSM45-2 A B C in. 50-3/4 43 75-1/8 mm 1289 1092 1908 in. 56-7/8 48 80-1/16 mm 1445 1219 2034 VENT FRAMINGTOP VENT WITH 2 FEET VERTICAL VENT AND ONE 90° ELBOW 13 (330) 6-1/2 (165) Efficiencies % Natural Gas P4 P4 LSM40M 35% 38.1 LSM40E 35.8 50.8 LSM45E 51.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Model No. LSM40-2 LSM45-2 A B C D in. 50-5/8 83-5/8 59-1/8 41-7/8 mm 1286 2124 1502 1064 in. 56-3/4 89-7/8 63-1/2 44-7/8 mm 1441 2283 1613 1140 C D A B Back wall of chase/enclosure (including any finishing materials) Figure 13 - Corner Framing with Square Termination (SV8HTS) Step 2.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Step 3. Install the Vent System Installation of Vent Restrictor General Information A vent restrictor may be needed with this appliance. The restrictor is installed in the appliance top flue outlet as shown in Figure 15, AIR INLET BAFFLE These instructions should be used as a guideline and do not supersede local codes in any way.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Vertical Termination Systems (Roof) See Figure 17 and Figures 25 through 27 on Page 16 and their associated Vertical Vent Tables which illustrate the various vertical venting configurations that are possible for use with these appliances. Secure Vent™ pipe applications are shown in these Figures.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Vertical (Offset) Installation Analyze the vent routing and determine the quantities of vent sections and number of elbows required. Refer to Vertical Vent Figures and Tables on Page 16 to select the type of vertical installation desired. Vent sections are available in net lengths of 4-1/2" (114 mm), 10-1/2" (267 mm), 22-1/2" (572 mm), 34-1/2" (876 mm) and 46-1/2" (1181 mm).
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS One method of support is by utilizing field provided support straps (conventional plumber's tape). Secure the plumber's tape to the framing members with nails or screws. Strap the tape around the vent, securing the ends of the tape to the framing. If desired, sheet metal screws #6 x 1/2" length may be used to secure the support straps to the vent pipe. See Figure 20. F.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS VERTICAL VENT FIGURES/TABLES Notes: • Secure Vent™ (rigid vent pipe) is shown in the Figures.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Horizontal (Outside Wall) Termination System See Figures 28, 31, 32 and 33 on Pages 17, 19 and 20 and their associated Horizontal Vent Table which illustrate the various horizontal venting configurations that are possible for use with these appliances. Secure Vent™ pipe applications are shown in these Figures.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS J. Assemble vent run to exterior wall - If not previously measured, locate the center of the vent at the exterior wall. Prepare an opening as described in Step B. Assemble the vent system to point where the terminus of the last section is within 5 in. (127 mm) to 8-1/2 in.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS See Table 8 as an aid in venting component selection for a particular range of exterior wall thicknesses. Venting Components Required for Various Exterior Wall Thicknesses, when using Square Termination Kit (SV8HTS) Vent Components Required Exterior Wall Thickness - inches (mm) Termination Kit Only 5 to 8-1/2 (127 to 216) Termination Kit and 6 In.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS HORIZONTAL Vent Figures/Tables (continued) Wall Firestop/Spacer (SV8HF) Table D H + H1 Maximum H H1 V Wall Firestop/Spacer (SV8HF) Ceiling Firestop/Spacer (SV8BF) V Minimum feet (meter) feet (meter) 3.5 (1.07) 2.5 (0.762) 6.5 (1.98) 3.5 (1.07) 8.5 (2.6) 4.5 (1.37) 10.5 (3.2) 5.5 (1.68) 12.5 (3.8) 6.5 (1.98) 14.5 (4.4) 7.5 (2.3) 16.5 (5.0) 8.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS CAUTION Ground supply lead must be connected to the wire attached to the green ground screw located on the outlet box. See Figures 35 and 36. Failure to do so will result in a potential safety hazard. The appliance must be electrically grounded in accordance with local codes or, in the absence of local codes, the National Electrical Code, ANSI/ NFPA 70-latest edition.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Ground - Green Neutral - White 120 VAC - Black Step 6. Connecting Gas Line J-BOX/RECEPTIACLE WIRING 120V, 60HZ, 1PH Junction Box Black Green White Tab Intact Tab Intact Field Wired Factory Wired Hot Side of Receptacle Neutral Side of Receptacle Green Ground Screw Figure 36- J-BOX WIRING All codes require a shut-off valve mounted in the supply line.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS TEST ALL CONNECTIONS FOR GAS LEAKS (FACTORY AND FIELD): WARNING Never use an open flame to check for leaks. Turn on gas supply and test for gas leaks using a gas leak test solution (also referred to as bubble leak solution).
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Step 8. LOG, VERMICULITE, VOLCANIC STONE AND GLOWING EMBER PLACEMENT 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.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS LSM40-2 & LSM45-2 Log Placement 2 3 6 5 2 1 7 Log Number 4 1 Log, Center 2 Log, Rear 3 Log, Center/Left 4 Log, Center/Right 5 Log, Rear/Top 6 Log, Front/Left 7 Log, Front/Center Align Groove At The Bottom Of Log (2) Over The Grate And Push It Towards The Rear.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Step 9. INSTALLATION AND REMOVAL OF GLASS DOOR WARNING • When reinstalling the glass door, the door latch screws must be securely tightened to prevent the glass door from falling out, which could potentially cause damage and possible injury. • Do not attempt to substitute the materials used on this door, or replace cracked or broken glass.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Burner Air Shutter Adjustment Procedure Air Shutter Opening WARNING • Air shutter adjustment should only be performed by a qualified professional service technician. • Ensure that the front glass door assembly is in place and sealed After adjustment. Main Burner Factory Air Shutter Opening Setting - Inches (millimeter) Model Nat.Gas Propane Gas LSM40-2 1/16 (1.59) 9/32 (7.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Finishing Requirements Wall Details Non-combustible materials, such as surrounds and other appliance trim, may be installed on the appliance front face with the exceptions. Complete finished interior wall. To install the appliance facing flush with the finished wall, position framework to accommodate the thickness of the finished wall (Figure 53).
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Step 11. ATTACHING SAFETY-IN-OPERATION WARNINGS It is the installers responsibility to ensure these warnings are properly affixed during installation. These warning labels are a critical step in informing consumers of safe operation of this appliance.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Installation Accessories Listed Secure Vent™ Components Cat. No. Model No.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Gas Conversion Kits Step 1. TURN OFF THE GAS SUPPLY TO THE APPLIANCE and disconnect power supply at the circuit breaker. Ensure appliance is cold. WARNING This conversion kit shall be installed by a qualified service agency in accordance with the manufacturer’s instructions and all applicable codes and requirements of the authority having jurisdiction.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS SIT Millivolt Pilot Assembly Shown SIT Millivolt Gas Valve Shown Burner Orifice Sizes Elevation 0-4500 feet ( 0-1372 meters) Model Pressure Regulator Pilot Orifice Thermopile (on millivolt pilot assemblies only) Nat.Gas Propane drill size (inches) drill size (inches) LSM40-2 .1405" (#28)* .086" (#44)* LSM45-2 .161" (#20)* .
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS NOTES 33 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
LENNOX HEARTH PRODUCTS • MONTEBELLO® DV GAS FIREPLACES (LSM40/45MN-2, LSM40/45MP-2, LSM40/45EN-2) • INSTALLATION INSTRUCTIONS Lennox Hearth Products reserves the right to make changes at any time, without notice, in design, materials, specifications, and prices, and also to discontinue colors, styles, and products. Consult your local distributor for fireplace code information. Printed in U.S.A. © 2005/2011 Lennox Hearth Products 34 P/N 850026M Rev.