Lennox MPDT33RNM Installation Instructions Manual
Lennox MPDT33RNM Installation Instructions Manual

Lennox MPDT33RNM Installation Instructions Manual

Merit plus series mpd direct vent gas fireplaces

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P/N 506015-07 Rev.
B 06/2013
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
MPD35CNM
MPD35RNM
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.
MPD35RPM
MPDT33RNE
MPD40CNM
MPDR33RNE
MPD40RNM
MPD35CNE
MPD40RPM
MPD35RNE
MPD45RNM
MPD35RNE-R
MPD45RPM
Portland
US
OTL No. 116-F-13g-5
before starting installation.
EL VIDRIO CALIENTE
CAUSARÁ QUEMADURAS.
USTED DEBE NUNCA
TOCAR EL VIDRIO CALIENTE.
LOS NIÑOS DEBEN NUNCA
TOCAR EL VIDRIO.
ELECTRONIC:
MPD40CNE
MPD40RNE
MPD45RNE
MPD40RNE-R

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Summary of Contents for Lennox MPDT33RNM

  • Page 1 INSTALLATION INSTRUC TIONS MPD Direct-Vent Gas Fireplaces MODELS MILLIVOLT: ELECTRONIC: MPDT33RNM MPD35RPM MPDT33RNE MPD40CNE P/N 506015-07 Rev. B 06/2013 MPDT33RPM MPD40CNM MPDR33RNE MPD40RNE This manual is one of a set of two supporting this product. Refer to P/N 506017-06 for...
  • 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 the General Information ........
  • Page 3 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® These appliances comply with National Safety WARNING WARNING Standards and are tested and listed by OMNI- Test Laboratories, Inc. (Report No. 116-F-13g-5) Improper installation, adjust- Failure to position the parts in to ANSI Z21.88-2009 (in Canada, CSA-2.33-...
  • 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 in the USA, the National Fuel Gas Code NFPA REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS 54 - latest edition / ANSI Z223.1 or, in Canada, Tables 2 and 3 show the appliances' inlet and the CAN/CGA-B149.1 - latest edition.
  • 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 insulate...
  • 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 ® EXTERIOR HORIZONTAL VENT TERMINATION CLEARANCE REQUIREMENTS NOTE: Local Codes Or Regulations May Require Different Clearances. See Item D in the Text Below. NOTE: Location Of The Vent Termination...
  • 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 Combustible Shelf Height - inches (millimeters) Models Appliance And Vent Clearances Top Vent - with One 90 degree Elbow Rear Vent - Straight Out The Back ®...
  • Page 9: 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 outlined The appliance is shipped with all gas controls below;...
  • Page 10: 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 Model or larger lumber. 33-1/4 33-1/4 37-3/4 12-7/8 MPdT33...
  • Page 11: Step 2. Routing Gas Line

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® FIREPLACE FRAMING SPECIFICATIONS Framing Model MPD and MPDR units MPdT33 33-1/8 48-1/2 34-5/16 17-3/16 24-1/4 MPdR33 1232 7" 35-1/8 57-1/2 40-5/8 19-3/16 28-3/4 6-1/8 MPD and MPDT units...
  • Page 12: 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 TOP VENT SEAL AND COVER PLATE REMOVAL COLLAR ( MPd35/-40/-45 models with A vent restrictor may be needed when WHEN USING THE TOP VENT...
  • Page 13: 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 27 through 29 i t c i t c on Page 17 and their associated Vertical...
  • Page 14 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 fit over Support the vertical portion of the venting system every 8 feet (2.4m) above the fireplace...
  • Page 15 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® F. Change vent direction to horizontal/inclined K. Install the vertical termination - The final run - At transition from or to a horizontal/ step involves installation of the SV4.5CGV-1 inclined run, install the SV4.5E45 and SV4.5E90...
  • Page 16: 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 shown ® Firestop/Spacer H Maximum V Minimum in the figures; Secure Flex (flexible vent pipe) ®...
  • Page 17 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 18: 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) TERMINATION SYSTEM Support Horizontal / Inclined Run Building Brackets SV4.5HT-2 Support Figure 32, and Figures 35 to 41 on Pages...
  • Page 19 LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® J. Assemble vent run to exterior wall - If not To help minimize water infil- previously measured, locate the center of the tration it is recommended that vent at the exterior wall.
  • Page 20: 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 21 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 22 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 23: 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 SECURE FlEx ® KITS ANd COMPONENTS NOTE: OUTER PIPE IS PULLED AWAY TO SHOW THE DETAIL OF THE INNER PIPE...
  • Page 24: 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 and THERMOPILE Section B for electronic appliances. The gas APPLIANCE- MOUNTED valve is set in place and pre-wired at the factory...
  • Page 25: 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 in the These appliances are equipped with a gas flex 120V, 60HZ, 1PH wall, or if installed in the control compartment,...
  • Page 26: 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 with...
  • Page 27: 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 instal- lation has been completed, the...
  • Page 28 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 29 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 30 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 31: 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 32 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 33: Step 12. Hood Installation

    LENNOX HEARTH PRODUCTS • MERIT PLUS DIRECT VENT GAS FIREPLACES (MPD33/35/40/45) • INSTALLATION INSTRUCTIONS ® Step 12. HOOd INSTALLATION Combustible Finished Wall Adjusting Set Screw Refer to Figures 61 and 62. All models must This area must remain Materials clear of combustible have hoods installed prior to operating.
  • Page 34: Step 13. Attaching Safety-In-Operation Warnings

    3. Si no puede encontrar las etiquetas, sírvase llamar a Hearth Products dealer to receive additional collez l’étiquette en anglais. Lennox Hearth Products o al distribuidor de Lennox safety instruction labels free of charge. 3. Si vous ne trouvez pas les étiquettes, veuillez Hearth Products más cercano para recibir etiquetas...
  • Page 35: 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 36 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 37: 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...
  • Page 38: Millivolt Valve

    SETTING. NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. 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.

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