Lennox MPDT33RNM Installation Instructions Manual

Merit plus series mpd direct-vent gas fireplaces

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P/N 506015-07 Rev. NC 05/2012
This manual is one of a set of two supporting this product.
Refer to P/N 506017-06 for Care and Operation Instructions.
Ce manuel est disponible en francais, simplement
en faire la demande. Numéro de la pièce 506223-43.
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.
This appliance may be installed in an aftermarket permanently located, manufactured home (USA only) or mobile
home, where not prohibited by local codes. This appliance is only for use with the type of gas indicated on the rating
plate. This appliance is not convertible for use with other gases, unless a certified kit is used.
WARNING / AVERTISSEMENT / AVISO
• HOT GLASS WILL CAUSE
BURNS.
• DO NOT TOUCH GLASS
UNTIL COOLED.
• NEVER ALLOW CHILDREN
TO TOUCH GLASS.
WARNING: If the information in these instructions
is not followed exactly, a fire or explosion may
result, causing property damage, personal injury,
or death.
- Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
- WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the fire
department.
- Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
INSTALLATION INSTRUC TIONS
MPD Direct-Vent
Gas Fireplaces
MODELS
MILLIVOLT:
MPDT33RNM
MPDT33RPM
MPDR33RNM
MPDR33RPM
MPD35RNM
MPD35RPM
OTL Report No. 116-F-13-4
Please read and understand these instructions
• 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.
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.
- QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ :
• Ne pas tenter d'allumer d'appareil.
• Ne touchez à aucan interrupteur. Ne pas vous servir des
téléphones se trouvant dans le bâtiment où vous trouvez.
• Appelez immédiatement votre fournisseur de gaz depuis
un voisin. Suivez les instructions du fournisseur.
• Si vous ne pouvez rejoindre le fournisseur de gaz,
appelez le service des incindies.
- L'installation et l'entretien doivent être assurés par un
installateur ou un service d'entretien qualifié ou par le
fournisseur de gaz.
MPD40RNM
MPDT33RNE
MPD40RPM
MPDR33RNE
MPD45RNM
MPD35RNE
MPD45RPM
Portland
US
before starting installation.
• EL VIDRIO CALIENTE
CAUSARÁ QUEMADURAS.
• USTED DEBE NUNCA
TOCAR EL VIDRIO CALIENTE.
• LOS NIÑOS DEBEN NUNCA
TOCAR EL VIDRIO.
ELECTRONIC:
MPD40RNE
MPD45RNE

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Summary of Contents for Lennox MPDT33RNM

  • Page 1 INSTALLATION INSTRUC TIONS MPD Direct-Vent Gas Fireplaces MODELS P/N 506015-07 Rev. NC 05/2012 MILLIVOLT: ELECTRONIC: MPDT33RNM MPD40RNM MPDT33RNE MPD40RNE This manual is one of a set of two supporting this product. Refer to P/N 506017-06 for Care and Operation Instructions. MPDT33RPM...
  • Page 2: Table Of Contents

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® PACKAGING GENERAL INFORMATION TABLE OF CONTENTS The assembled vented gas fireplace heater is Packaging ............ 2 WARNING packaged with: Introduction ..........2 • (1 set) Logs (packaged in a carton inside General Information ........
  • Page 3 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® These appliances comply with National WARNING WARNING Safety Standards and are tested and listed by OMNI-Test Laboratories, Inc. (Report Failure to position the parts in...
  • Page 4: Requirements For The Commonwealth Of Massachusetts

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® Gas Pressure—All Models Install the appliance according to the Model Nat.Gas Propane regulations of the local authorities having Series drill size (inches) drill size (inches)
  • Page 5: Cold Climate Insulation

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® COLD CLIMATE INSULATION For cold climate installations, seal all cracks around your appliance with noncombustible material and wherever cold air could enter the room. It is especially important to...
  • Page 6: Vent Termination Clearances

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® VENT TERMINATION CLEARANCES Vertical Vent Termination Clearances The vent / air intake termination clearances These instructions should be used as a above the high side of an angled roof are as...
  • Page 7 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® NOTE: Local Codes Or Regulations May Require Different Clearances. See Item D in the Text Below. NOTE: Location Of The Vent Termination Inside Exterior Wall...
  • Page 8: Appliance And Vent Clearances

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® MINIMUM CLEARANCES TO COMBUSTIBLES 1/2 in. (13 mm) Back 0 in. (0 mm) from Spacers Or Appliance And Vent Clearances Dimples The appliance is approved with zero clearance to combustible 1/2 in.
  • Page 9 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® Wall Finishes / Surrounds / Mantels Note: Combustible wall finish materials and/or surround materials must not be allowed to encroach the area defined by the appliance front face (black sheet metal).
  • Page 10: Pre-Installation Steps

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® DETAILED INSTALLATION STEPS PRE-INSTALLATION STEPS TYPICAL INSTALLATION SEQUENCE Step 1. FRAMING The typical sequence of installation is The appliance is shipped with all gas controls outlined below;...
  • Page 11: Fireplace And Framing Specifications

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® Framing VENT FRAMING: Framing should be TOP VENT WITH ONE constructed of 2x4 10-1/2 90° ELBOW or larger lumber. . n i 33 1/4 —...
  • Page 12: Step 2. Routing Gas Line

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® FIREPLACE FRAMING SPECIFICATIONS . n i 24 1/4 MPDT33 MPD and MPDR units MPDR33 . n i 7" MPD35 MPD and MPDT units (178 mm) .
  • Page 13: Step 3. Preparing Appliance Vent Collar

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® Step 3. PREPARING APPLIANCE VENT Use only approved vent components (see Select Venting System—Horizontal or Approved Vent Components on Page 2). Vertical COLLAR ( MPD35/-40/-45 models with...
  • Page 14: Vertical Termination Systems

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® VERTICAL TERMINATION SYSTEMS (ROOF) i t c i t c See Figure 19 and Figures 30 through i t c i t c 32 on Page 17 and their associated...
  • Page 15 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® Vertical (Offset) Installation The dimpled end of the vent components E. Support the vertical vent run sections— Note: Proper venting support is very fit over the appliance collar to create the Analyze the vent routing and determine the positive twist lock connection.To attach a...
  • Page 16 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® F. Change vent direction to horizontal/ K. Install the vertical termination—The inclined run—At transition from or to a final step involves installation of the horizontal/inclined run, install the SV4.5E45 SV4.5CGV-1 Vertical Termination.
  • Page 17: Vertical Vent Tables And Figures

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® VERTICAL VENT FIGURES/TABLES TABLE A Ceiling Note: Secure Vent (rigid vent pipe) is ® Firestop/Spacer H Maximum V Minimum shown in the figures; Secure Flex (flexible ®...
  • Page 18 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® VERTICAL VENT FIGURES/TABLES (continued) TABLE C Maximum H Maximum V Minimum (meters) (meters) (meters) feet feet feet (1.524) (0.610) (0.305) Ceiling Firestop/Spacer (3.048) (1.219) (0.610) SV4.5VF*...
  • Page 19: Horizontal Termination System

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® TYPICAL HORIZONTAL VENT INSTALLATION HORIZONTAL (OUTSIDE WALL) Support Horizontal / Inclined Run Building Brackets SV4.5HT-2 TERMINATION SYSTEM Support Termination Framing Figure 33, and Figures 39 to 44 on SV4.5E90...
  • Page 20 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® J. Assemble vent run to exterior wall—If To help minimize water not previously measured, locate the center infiltration it is recommended that of the vent at the exterior wall. Prepare an the Firestop/Spacer (SV4.5HF)
  • Page 21: Horizontal Vent Tables And Figures

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® HORIZONTAL VENT FIGURES/TABLES Note: Install the U-shaped vent TABLE F restrictor in any vent run with Note: Secure Vent components (rigid vent pipe and terminal) are ®...
  • Page 22 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® HORIZONTAL VENT FIGURES/TABLES (continued) TABLE H Maximum H Maximum V Minimum (meters) (meters) feet (meters) feet feet (1.524) (0.610) (0.305) (3.048) (1.219) (0.610) Ceiling (4.572) (1.829)
  • Page 23 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® HORIZONTAL VENT FIGURES/TABLES (continued) TABLE K Wall Firestop/Spacer SV4.5HF** Maximum H Maximum V Minimum feet feet feet (meters) (meters) (meters) (1.524) (0.610) (0.305) (3.048) (1.219) (0.610)
  • Page 24: Venting Using Flexible Vent Pipe

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® VERTICAL OR HORIZONTAL VENTING USING FLEX VENT NOTE: OUTER PIPE IS PULLED AWAY TO SECURE FLEX ® KITS AND COMPONENTS SHOW THE DETAIL OF THE INNER PIPE...
  • Page 25: Step 5. Field Wiring

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® Step 5. FIELD WIRING Refer to Section A for millivolt appliances THERMOPILE and Section B for electronic appliances. The APPLIANCE- MOUNTED gas valve is set in place and pre-wired at the...
  • Page 26: Step 6. Optional Blower Kit Wiring

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® BLOWER CONTROL CIRCUIT WIRING Note: Remote receiver should be located These appliances are equipped with a gas flex 120V, 60HZ, 1PH in the wall, or if installed in the control...
  • Page 27: Step 8. Verifying Appliance Operation

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® Millivolt Appliance Checkout Optional Gas Flex Line Connector The pilot flame should be steady, not lifting 3/8" NPT x 3/8" 1/2" x 3/8" Flare or floating. Flame should be blue in color...
  • Page 28: Step 9. Installing Logs

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® Step 9. INSTALL VOLCANIC STONE, Glowing Embers GLOWING EMBERS AND LOGS WARNING • DO NOT attempt to install the logs until the appliance installa- tion has been completed, the gas...
  • Page 29 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® MPD33 LOG PLACEMENT Number Description (Stamped #) Log, Rear (39-12) Log, Left (39-1) Log, Right (39-2) Log, Top Center (39-13) Log, Top/Left (39-3) Log, Top/Right (39-4) Catalog Number for the entire log set: 24M15 Position the individual logs as shown below.
  • Page 30 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® MPD35 LOG PLACEMENT Number Description (Stamped #) Log, Rear (39-5) Log, Left (39-1) Log, Right (39-2) Log, Top Center (39-6) Log, Top/Left (39-3) Log, Top/Right (39-4) Catalog Number for the entire log set: H6197 Position the individual logs as shown below.
  • Page 31 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® MPD40 AND MPD45 LOG PLACEMENT Number Description (Stamped #) Log, Center (39-8) Log, Rear (138) Log, Right (39-10) Log, Left (39-9) Log, Top/Left (39-11) Log, Top/Right (39-11) Catalog Number for the entire log set: 24M25 Position the individual logs as shown below.
  • Page 32: Step 10. Remove/Install Glass Door

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® Step 10. REMOVING AND INSTALLING Step 11. BURNER ADJUSTMENTS Removing the Glass Enclosure Panel (see Figure 56) THE GLASS DOOR Flame Appearance and Sooting Remove the top louver assembly or radiant...
  • Page 33 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® 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.
  • Page 34: Step 12. Hood Installation

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® Step 12. HOOD INSTALLATION Adjusting Set Screw Combustible Finished Wall Refer to Figures 65 and 66. All models This area must remain Adjustment Rod Up...
  • Page 35: Step 13. Attaching Safety-In-Operation Warnings

    3. If you are unable to locate the labels, please llamar a Lennox Hearth Products o al distribuidor proprié taire. En cas de doute, collez l’étiquette call Lennox Hearth Products or your nearest de Lennox Hearth Products más cercano para...
  • Page 36: Installation Accessories

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® INSTALLATION ACCESSORIES Listed Secure Vent Components Listed Secure Vent Components ® ® Cat. No. Model Description Cat. No. Model Description 77L70 SV4.5L6 6 Inch (152 mm) H1968 SV4.5HT-2...
  • Page 37 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® INSTALLATION ACCESSORIES CONTINUED Listed Secure Flex Components ® Listed Secure Flex Components ® Cat. # Model Description Cat. # Model Description These termination kits include firestop/spacer, gear clamps and flex adaptor.
  • Page 38: Gas Conversion Kits

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® GAS CONVERSION KITS Electronic SIT Systems Natural Gas To Propane Gas WARNING Conversion Kits Models Catalog No. This conversion kit shall be installed by a qualified service agency in accordance with the manufacturer’s instructions and all applicable codes...
  • Page 39: Millivolt Valve

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® Step 4. Carefully remove the logs. Exercise Step 9. Refer to Figure 64 and replace the Step 13. Turn on gas supply and test for gas care so as not to break the logs.
  • Page 40 DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION 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.

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