Lennox MERIT PLUS SERIES Homeowner's Care And Operation Instructions Manual

Direct-vent gas fireplace heaters

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RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
• Hot! Do not touch! The glass and
surfaces of this appliance will be hot
during operation and will retain heat
for a while after shutting off the appli-
ance. Severe burns may result.
• Carefully supervise children in the
same room as appliance.
• If small children are present in the home, it is
recommended that this appliance be fi tted with
a screen door or screen panel kit. See Page 14
for ordering information.
WARNING: IF THE INFORMATION IN THIS MANUAL
IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLO-
SION MAY RESULT CAUSING PROPERTY DAMAGE,
PERSONAL INJURY OR LOSS OF LIFE.
FOR YOUR SAFETY: Do not store or use gasoline
or other fl ammables or liquids in the vicinity of
this or any other appliance.
FOR YOUR SAFETY: What to do if you smell gas:
• DO NOT light any appliance.
• DO NOT touch any electrical switches.
• Do not use any phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow your gas suppliers
instructions.
• If your gas supplier cannot be reached, call
the fi re department.
Installation and service must be performed by
a qualifi ed installer, service agency or the gas
supplier.
WARNINGS
OTL Report No. 116-F-28-5
HOMEOWNER'S CARE AND
OPERATION INSTRUCTIONS
DIRECT VENT SEE-THROUGH
®
MERIT
DIRECT-VENT GAS FIREPLACE HEATERS
P/N 875,025M REV. A 05/2006
MODELS
Millivolt Models
MPD35ST-NM
MPD35ST-PM
A French manual is available upon request. Order P/N 875,025CF
Ce manuel d'installation est disponible en francais, simplement en
faire la demande. Numéro de la pièce 875,025CF
AVERTISSEMENT: ASSUREZ-VOUS DE BIEN
SUIVRE LES INSTRUCTIONS DONNÉ DANS CETTE
NOTICE POUR RÉDUIRE AU MINIMUM LE RISQUE
D'INCENDIE OU POUR ÉVITER TOUT DOMMAGE
MATÉRIEL, TOUTE BLESSURE OU LA MORT.
POUR VOTRE SÉCURITÉ: Ne pas entreposer ni
utiliser d'essence ni d'autre vapeurs ou liquides
infl ammables dans le voisinage de cet appareil ou
de tout autre appareil.
POUR VOTRE SÉCURITÉ: 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 bati-
ment où vous vous trouvez.
• Evacuez la piéce, le bâtiment ou la zone.
• 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 dos incendies.
L'installation et service doit être exécuté par un
qualifi é installeur, agence de service ou le fournis-
seur de gaz.
PLUS SERIES
Electronic Models
MPD35ST-NE

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Summary of Contents for Lennox MERIT PLUS SERIES

  • Page 1 HOMEOWNER'S CARE AND OPERATION INSTRUCTIONS DIRECT VENT SEE-THROUGH ® MERIT PLUS SERIES RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE DIRECT-VENT GAS FIREPLACE HEATERS WARNINGS P/N 875,025M REV. A 05/2006 • Hot! Do not touch! The glass and surfaces of this appliance will be hot during operation and will retain heat MODELS for a while after shutting off the appli-...
  • Page 2: Warning & Safety Information

    SAFETY & WARNIING WARNING WARNING INFORMATION Children and adults should be Do not use these appliances if any part has been under water. alerted to the hazards of high IMPORTANT: PLEASE READ THIS Immediately call a qualifi ed, surface temperatures. Use MANUAL IN ITS ENTIRETY AND professional service technician caution around the appliance...
  • Page 3: Table Of Contents

    The use of other fuels or combination of fuels will degrade the performance In selecting this LENNOX Direct-Vent Gas Appliance you have chosen the fi nest and most of this system and may be dangerous.
  • Page 4: Gas Controls Access

    Burn-in Period OPERATION AND CARE OF YOUR Manifold Gas Supply Pressure APPLIANCE (electronic models) During the fi rst few fi res of this appliance there will be some odor due to the curing of the The standard controls for appliance operation Fuel # Fixed paint and burning off of lubricants used in the...
  • Page 5: Variable Flame Adjustment

    Once the pilot is lit, if your electronic appliance is IMPORTANT equipped with an optional burner control switch SIT Millivolt Gas Valve kit the appliance main burner may be turned on HI/LO Variable Always verify proper operation and off using the optional switch (See optional Inlet Pressure Tap Flame Height accessories on Page 13 - Wall Switch, Wall...
  • Page 6 Paint is - Carefully follow placement instructions on the fuel. available at your local authorized Lennox Hearth Pages 8 to 10). All logs should fi t onto cor- It is recommended that the glass be cleaned Products dealer , cat.
  • Page 7: Front Glass Enclosure Panel, Removal And Installation

    Front Glass Enclosure Panel, Removal These are direct-vent appliances. They are Removing Glass Enclosure Panels designed to operate only when the front glass (see Figure 4) and Installation enclosure panel is installed. Generally the front glass enclosure panel should not be removed 1.
  • Page 8: Install Grate, Vermiculite

    INSTALL GRATE, VERMICULITE, GLOWING EMBERS AND LOGS Bottom View of Logs (in packaging) LOG SET - IDENTIFICATION LOG SET Catalog Number H3210 * Item Description Log, Center Log, Left Rear Log, Left Front Log, Right Rear Log, Top Center Log, Front Center * Item "letters"...
  • Page 9 READ LOG WARNINGS ON PAGE 10 BEFORE PROCEEDING 8. Place Log (B) as shown in Figure 8. 1. Remove front glass enclosure panel from appliance. Position Log (B) Against The Back Of The Grate Here a. Open Control Compartment Access Panel (see Control Compart- ment Access Instructions on Page 4.).
  • Page 10: Burner Flame Adjustments

    10. Place Log (E) as shown in Figure 11. WARNING Position round end of log (E) against the notch of Logs get very hot and will remain hot up to one hour after gas supply is log (D) here. Two charred spots face the front turned off.
  • Page 11: Millivolt Appliance Checkout

    Millivolt Appliance Checkout to the troubleshooting guide in this manual. Burner Air Shutter Adjustment Procedure If problem persists, contact your Lennox The pilot fl ame should be steady, not lifting or fl oating. Flame should be blue in color with distributor.
  • Page 12: Wiring Diagrams

    Switch its coverage. Normally, all parts should be ordered through Field Wired your Lennox distributor or dealer. Parts will be Standard OFF/ON Switch Retain this manual. File it with your other Factory shipped at prevailing prices at time of order.
  • Page 13: Accessory Components

    ACCESSORY COMPONENTS Product Reference Information Cat. No. Model Ship. Ship. Weight Volumn H3201 MPD35ST-NM 220 lbs 46W x 26D x 43H (30 cu.ft.) H3202 MPD35ST-PM 220 lbs 46W x 26D x 43H (30 cu.ft.) H3203 MPD35ST-NE 220 lbs 46W x 26D x 43H (30 cu.ft.) Remote Control Kit, Standard Remote Control Kit, Deluxe...
  • Page 14 Note: Door & Trim Kits are for 1 side only. If set is desired, order 2 kits. ACCESSORY COMPONENTS Arch Design Arch Pane Design Decorative Arch Screen Panel Kit Tall Style View Doors This easy to install optional screen installs over the standard glass enclosure panel to provide protection These decorative screen doors are offered in four from direct contact with the hot glass surface.
  • Page 15 Note: Door & Trim Kits are for 1 side only. If set is desired, order 2 kits. ACCESSORY COMPONENTS Sunrise Style (upper grille shown) Crescent Style (lower grille shown) 4 Piece Trim Kit Cat. No. Model No. Description Cat. No.# Model Description Model Series...
  • Page 16 ACCESSORY COMPONENTS * 35" Arch Door Kits Cat. No. Model No. Description 26M43 ADK35CMPB Arch Door, Polished Brass 26M44 ADK35CMBS Arch Door, Brushed Stainless * Order 2 for set if desired. (ref. Form # 750,021M) Arch Door Kits Two types of arch door kits are available for the Multi- * 35"...
  • Page 17: Lighting Instructions - Millivolt

    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 lit with a piezo •...
  • Page 18 INSTRUCTIONS D’ALLUMAGE – VANNE GAZ MILLIVOLT POUR VOTRE SÉCURITÉ, LISEZ CES INSTRUCTIONS AVANT L’ALLUMAGE AVERTISSEMENT : SI VOUS NE SUIVEZ PAS CES INSTRUCTIONS À LA LETTRE, IL POURRAIT S’EN SUIVRE UN INCENDIE OU UNE EXPLOSION CAUSANT DES DOMMAGES MATÉRIELS, DES BLESSURES CORPORELLES OU MÊME DES PERTES DE VIE. •...
  • Page 19: Lighting Instructions - Electronic

    LIGHTING INSTRUCTIONS — ELECTRONIC 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. When lighting the appliance, follow these instructions •...
  • Page 20 INSTRUCTIONS D’ALLUMAGE — ELECTRONIC POUR VOTRE SÉCURITÉ, LISEZ CES INSTRUCTIONS AVANT L’ALLUMAGE AVERTISSEMENT: SI VOUS NE SUIVEZ PAS CES INSTRUCTIONS À LA LETTRE, IL POURRAIT S’EN SUIVRE UN INCENDIE OU UNE EXPLOSION CAUSANT DES DOMMAGES MATÉRIELS, DES BLESSURES CORPORELLES OU MÊME DES PERTES DE VIE. A.
  • Page 21: Maintenance Schedule

    MAINTENANCE SCHEDULE Annually (Before the onset of the Burning Season) MAINTENANCE TASK ACCOMPLISHING PERSON PROCEDURE Inspecting/Cleaning Burner, Logs Qualifi ed Service Technician Inspect valve and ensure it is properly operating. Check piping and Controls for leaks. Vacuum the control compartment, fi replace logs and burner area.
  • Page 22: Troubleshooting Guide - Millivolt

    TROUBLESHOOTING Note: Before troubleshooting the gas control system, Ensure external gas shut off valve, located at gas supply inlet, (and wall switch, iff applicable), is in the “ON” position. Important: Valve system troubleshooting should only be accomplished by a qualifi ed service technician. TROUBLESHOOTING GUIDE - MILLIVOLT GAS CONTROL SYSTEM SYMPTOM POSSIBLE CAUSES...
  • Page 23 TROUBLESHOOTING PROCEDURE - ELECTRONIC IGNITION SYSTEM START CHECK • Turn Off Gas Supply. • Check for proper volt- • Line voltage power age at control harness • Ensure Valve Switch Is In ON Position. • Low voltage transformer (see insert A). Voltage •...
  • Page 24: Replacement Parts List

    Page 16 Complete Log Set Available Only 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.

This manual is also suitable for:

Mpd35st-neMpd35st-pmMpd35st-nm

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