HOMEOWNER'S CARE AND OPERATION INSTRUCTIONS DIRECT VENT MERIT® LMDV-33/35/40 SERIES DIRECT-VENT GAS FIREPLACE HEATERS P/N 875,028M REV.
CONGRATULATIONS! In selecting this LENNOX Direct-Vent Gas Appliance you have chosen the finest and most dependable fireplace to be found anywhere. Its a beautiful, prestigious alternative to a wood burning fireplace. Welcome to a Family of tens of thousands of satisfied LENNOX Fireplace Owners. Please carefully read and follow all of the instructions found in this manual. Please pay special attention to the safety instructions provided in this manual.
Gas Pressure Tables 4, 5 and 6 show the appliances' gas pressure requirements. Inlet Gas Supply Pressure (all models) Fuel # Minimum Maximum Natural Gas 5.0" WC (1.24 kPa) 10.5" WC (2.61 kPa) Propane 11.0" WC (2.74 kPa) 13.0" WC (3.23 kPa) At the time of installation, it must be determined if the appliance needs to be derated. Contact your local gas supplier for deration requirements for your area.
WARNING These fireplaces are vented heaters. Do not burn wood or other material in these appliances. WARNING 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 Do not place clothing or other flammable materials on or near this appliance. WARNING Carbon monoxide poisoning: early signs of carbon monoxide poisoning are similar to the flu with headaches, dizziness and/or nausea.
If your electronic appliance is equipped with an optional remote wall switch or remote control kit the appliance main burner may be turned on and off with the wall switch or remote control. Electronic Appliances To light electronic appliances refer to the detailed lighting instructions found on Page 18 of these instructions. Electronic appliance lighting instructions may also be found on the pull out lighting instruction labels attached to the gas control valve.
Clean Lower Control Compartment Keep lower control compartment clean by vacuuming or brushing it out at least twice a year (also clean the air venturi with a brush or wire). More frequent cleaning may be required due to accumulation of lint from carpeting, bedding materials, pet hair, spider webs, etc. It is very important that control compartments, burners, circulating air passageways and air venturi on the appliance are NOT obstructed in any way.
Top Flange on Glass Door Glass Door Removing Glass Enclosure Panels (see Figure 6) Installing Glass Enclosure Panels (see Figure 6 ) 1. Remove the top louver assembly by pulling it up and out. 1. Visually inspect the gasket on the backside of the glass panel. The gasket surface must be clean, free of irregularities and seated firmly. 2. Remove the control compartment access door (see removal instructions on Page 4 - Removing Control Compartment Door). Bottom Vee-flange Glass Door 3.
INSTALL VERMICULITE, VOLCANIC STONE, GLOWING EMBERS AND LOGS 1. Remove the front glass enclosure panel (see Removing Glass Enclosure Panels on this page). 2. Carefully remove the old logs, embers volcanic stone and vermiculite from the firebox. Handle logs carefully to prevent breakage. 3. Install Vermiculite - Place some vermiculite on the firebox floor around the burner (the entire bag of vermiculite will NOT be used). See Figures 8 & 9. DO NOT PLACE ANY VERMICULITE ON THE BURNER.
MODEL LMDV-3328 & LMDV-3530 Log Placement Instructions A LOG SET Catalog Number H3366 * Item Description A Log, Rear B Log, Left C Log, Left Center D Log, Right Center E Log, Right D * Item "letters" above correspond to photos B C E Install the Embers, Vermiculite, Volcanic Stone and Logs in the order shown here (1 through 6) and per the instructions on Page 8. DO NOT PLACE EMBERS OVER GAS SLOTS 1 4 Embers Hole on bottom of log (E) fits over pin on log (A).
MODEL LMDV-4035 Log Placement Instructions LOG SET Catalog Number H3365 * Item A Description A Log, Rear B Log, Left C Log, Center D Log, Center Front E Log, Right C B E * Item "letters" above correspond to photos D Install the Embers, Vermiculite, Volcanic Stone and Logs in the order shown here (1 through 6) and per the instructions on Page 8.
BURNER 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. If after a short period the flame stays lowered blue, or if the flame is orange with evidence of sooting (black tip), the air shutter opening may need to be adjusted.
Burner Air Shutter Adjustment Procedure 1. Locate adjustment rod and adjust air shutter to the standard setting as shown in Figure 12 (adjustment rod is located in the lower control compartment). Note: Rotating the adjustment rod clockwise decreases air and counterclockwise increases air. 2. Light appliance (follow lighting procedure on lighting label in control compartment or see homeowners manual). 3.
Wiring diagrams are provided here for reference purposes only. This information is also provided on schematics attached directly to the appliance on a pullout panel located within the control compartment. Electronic Wiring Diagram (Honeywell) Showing Blower Wiring for Optional FBK-100, FBK-200 & FBK-250 Kits Schematic Representation Only Auxiliary View A J-Box Wiring when using unit mounted relay module. BK W G CAUTION Label all wires prior to disconnection when servicing controls.
ACCESSORY COMPONENTS Remote Control Kit, Deluxe Remote Control Kit, Standard Product Reference Information Cat. No. Model Ship. Weight Ship. Volumn H3313 LMDVT-3328CNM 95 lb. 13.08 cu. ft. H3314 LMDVT-3328CPM 95 lb. 13.08 cu. ft. H3315 LMDVR-3328CNM 95 lb. 13.08 cu. ft. H3316 LMDVR-3328CPM 95 lb. 13.08 cu. ft. H3317 LMDVT-3328CNE 95 lb. 13.08 cu. ft. H3318 LMDVR-3328CNE 95 lb. 13.08 cu. ft. H3319 LMDV-3530CNM 113 lb. 15.75 cu. ft. H3320 LMDV-3530CPM 113 lb. 15.75 cu. ft.
ACCESSORY COMPONENTS (CONTINUED) Style View Doors - Arch Design Kits Forced Air Blower Kits Cat. No. Model No. 80L84 FBK-100 Description Blower, Standard (single speed) 80L85 FBK-200 Blower, Variable Speed (w/wall-mounted switch) 80L86 FBK-250 Blower, Variable Speed (w/unit-mounted switch) 94L89 94L90 H0543 FBK-100-36 FBK-200-36 FBK-250-36 Blower, Standard, 36 Pack Blower Kit - Variable Speed with Wall Switch 36 Pack Blower Kit - Variable Speed with Thermo Snap Switch 36 Pack (ref.
ACCESSORY COMPONENTS (CONTINUED) Polished Brass 3Piece Trim Kit This kit contains brass trim pieces used to finish the gaps between the wall board and the fireplace, providing the appliance a brass perimeter highlight. This kit contains the trim pieces and these instructions. 3 Piece Trim Kit Cat. No. Model No.
LIGHTING INSTRUCTIONS – HONEYWELL AND SIT 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 with a piezo igniter. When lighting the pilot, follow these instructions exactly. B. BEFORE OPERATING smell all around the appliance area for gas.
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 exactly. B. BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.
MAINTENANCE SCHEDULE Annually (Before the onset of the Burning Season) MAINTENANCE TASK ACCOMPLISHING PERSON PROCEDURE Inspecting/Cleaning Burner, Logs and Controls Qualified Service Technician Inspect valve and ensure it is properly operating. Check piping for leaks. Vacuum the control compartment, fireplace logs and burner area.
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 qualified service technician. TROUBLESHOOTING GUIDE - MILLIVOLT GAS CONTROL SYSTEM SYMPTOM POSSIBLE CAUSES 1. Spark igniter will not light pilot after repeated triggering of igniter button. 2.
TROUBLESHOOTING PROCEDURE - ELECTRONIC IGNITION SYSTEM START CHECK • Turn Off Gas Supply. • Ensure Valve Switch Is In ON Position. • Disconnect Control Harness. • Set Thermostat To Call For Heat. • Check for proper voltage at control harness (see insert A). Voltage NO 2 should be 24V between thermostat or pressure switch and 24V common and 24V hot.
REPLACEMENT PARTS LIST Item # 1 Description LMDVT-3328 & LMDVR-3328 Hood LMDV-3530 LMDV-4035 Part No. Qty. Part No. Qty. Part No. Qty.
REPLACEMENT PARTS LMDV-4035 8 1 8 LMDVT-3328 & LMDVR-3530 9 7 10 2 13 12 18 15 19 28 6 16 11 20 32 17 3 29 14 5 21 26 31 27 30 4 23 24 22 25 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
LENNOX 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. © 2005 by LENNOX HEARTH PRODUCTS 24 P/N 875,028M REV. C 06/2005 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.