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HOMEOWNER'S CARE AND
OPERATION INSTRUCTIONS
DIRECT VENT SEE-THROUGH
®
MERIT PLUS SERIES
DIRECT-VENT GAS FIREPLACE HEATERS
P/N 875,025M REV. NC 04/2005
MODELS
Millivolt Models Electronic Models
MPD35ST-NM MPD35ST-NE
MPD35ST-PM
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNING: IF THE INFORMATION IN THIS MANUAL
IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLO-
SION MAY RESULT CAUSING PROPERTY DAMAGE,
A French manual is available upon request. Order P/N 875,025CF
PERSONAL INJURY OR LOSS OF LIFE.
C
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These appliances are designed to operate on natural CONGRATULATIONS! gas or propane gas only. 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. dependable fi replace to be found anywhere. Its a beautiful, prestigious alternative to a wood burning fi replace. Welcome to a Family of tens of thousands of satisfi ed Millivolt Models - BTU Input LEN
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Burn-in Period Manifold Gas Supply Pressure WARNING (electronic models) During the fi rst few fi res of this appliance there will be some odor due to the curing of the Fuel # Fixed Do not use these appliances if paint and burning off of lubricants used in the any part has been under water. 3.5" WC manufacturing process. Natural Gas (.87 kPa) Immediately call a qualifi ed, Depending on your use, the burn-in period may professional service technician 10.0" WC take a few hours or a
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O I O L I P T O TPTH TP TH it TPTH TP TH L I P F LO F WARNING Note:The gas supply line must be installed in accordance with Carbon monoxide poisoning: building codes by a early signs of carbon monoxide qualifi ed installer approved and/or poisoning are similar to the fl u licensed as requed with headaches, dizziness and/or by the locality. In OFF/PILOT/ON (gas control knob) the Commonwealth nausea. If you have these signs, of Massachusetts, HI/LO (fl ame height obtain fr
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IGNITER OFF ON CONTROL Once the pilot is lit, if your electronic appliance is equipped with an optional burner control switch WARNING IMPORTANT kit the appliance main burner may be turned on and off using the optional switch (See optional Turn off gas and electrical power Do not use abrasive cleaners accessories on Page 12 - Wall Switch, Wall on glass. Never clean the glass before servicing the appliance. Thermostat Or Remote Control Receiver). when it is hot. • During star
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Removing Glass Enclosure Panels Inspect and clean all wire connections. Ensure (see Figure 4) that there is no melting or damage. Inspection WARNING should include: 1. Remove the top louver assembly or radiant • Terminals at the Valve Do not attempt to touch the front panel by pulling it out and off. • OFF/ON Switch enclosure glass with your hands • (Optional Control Switch) Wall Thermostat, while the fi replace is in use. 2. Open the control compartment access panel. Remote Control o
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INSTALL GRATE, VERMICULITE, GLOWING EMBERS AND LOGS Bottom View of Logs (in packaging) LOG SET - IDENTIFICATION LOG SET Catalog Number H3210 * Item Description A Log, Center B Log, Left Rear C A C Log, Left Front B D Log, Right Rear E Log, Top Center F F Log, Front Center * Item "letters" above correspond to photos on right D E REFERENCE Firebox Accessories / Parts Cat. No. Model No. Description 88L53 FGE Bag of Glowing Embers Top View of Logs (1 oz. rockwool) Vermiculite, Bag (2 liters) 42363
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READ LOG WARNINGS ON PAGE 9 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- B ment Access Instructions on Page 4.). b. Remove the glass panel enclosure (see Removing Glass Enclosure Panel instructions on Page 6. 2. Remove the following from fi rebox; log set, embers (rockwool) and vermiculite. Handle logs carefully
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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. Handle only when logs are cool. Turn off all electricity to the E appliance before you install grate and logs. D BURNER ADJUSTMENTS (QUALIFIED TECHNICIANS ONLY) If the air shutter openings closed too far, sooting may develop. Sooting is indicated by black p
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2. Light appliance (follow lighting procedure on Millivolt Appliance Checkout Electronic Appliance Checkout lighting label in control compartment or see homeowners manual). The pilot fl ame should be steady, not lifting To light the burner, refer to the lighting instruc- 3. Allow the burner to operate for at least 15 min- or fl oating. Flame should be blue in color with tions on Page 16. Ensure the igniter lights the utes while observing the fl ame continuously traces of orange at the outer ed
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TH TH TP TP WIRING DIAGRAMS Electronic Wiring Diagram (Honeywell) Showing Blower Wiring for Optional FBK-100, FBK-200 & FBK-250 Kits Schematic Representation Only Wiring diagrams are provided here for refer- ence purposes only. This information is also Wall Mounted Blower Speed Control Switch or ON/OFF Switch for Blower Kit (optional) Auxiliary View A provided on schematics attached directly to the J-Box Wiring when Relay Module C/W FBK-250 only. Plug blower appliance on a pullout panel l
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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 Cat. No. Model No. Description Cat. No. Model No. Description H0249 RCL Remote Control System H0251 RCL-STAT Remote Control System (Standard) (Deluxe) (ref. Form # 750,127M) (ref. For
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Note: Door & Trim Kits are for 1 side only. If set is desired, order 2 kits. ACCESSORY COMPONENTS Arch Design 2-Piece Louver Kits 3 Piece Trim Kit Arch Pane Cat. No. Model No. Description Design Cat. No. Model No. Description 2 Pc. Louver Kit, 96L05 2LVR35PB 96K21 TK35PB3 35” 3 Piece Finish Trim Kit, Polished Brass Polished Brass 2 Pc. Louver Kit, 96L09 2LVR35BS (ref. Form # 750,147M) Brushed Stainless (ref. Form # 504,224M) Polished Brass 3-Piece Trim Kit This kit contains brass trim piece
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P A ACCESSORY COMPONENTS * 35" Eyebrow Hood Kits Cat. No. Model No. Description Hood Kit, Polished 96K67 EB35PB Brass * 35" Screen Heat Guard Kit * 35" Arch Door Kits Hood Kit, Brushed Cat. No. Model No. Description Cat. No. Model No. Description 88L49 EB35BS Stainless 26M48 HG35M 35" Screen Heat Guard Kit 26M43 ADK35CMPB Arch Door, Polished Brass * These hood kits replace the standard hood that * Order 2 for set if desired. 26M44 ADK35CMBS Arch Door, Brushed Stainless comes with these fi repla
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I O O L I P T O i it t TPTH TP TH L I P F L F O 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 • Do not use any phone in your building. igniter. When lighting the pilot, follow these instructions • Immediately call your gas supplier from a neighbor’s exa
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IGNITER OFF ON CONTROL 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 • Immediately call your gas supplier from a neighbor’s exactly. phone. • If your gas supplier cannot be reached, call the fi re B. BEFORE OPERATING smell all around the appliance area department. f
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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. Check Flame Patterns and Flame Qualifi ed Service Technician Refer to Figure 13 on Page 9 and verify the fl ame pattern and Height height displayed by the appliance
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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 CORRECTIVE ACTION 1. Spark igniter will not light pilot after A. Defective igniter Check for spark at electrode and pilot; if
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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 Disconnect Control Harness. NO Limit controller 2 should be 24V between Set Thermostat To Call For Heat. Thermostat thermostat or pressure Wiring switch and 24V common and 24V hot. YES Plug control harn
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REPLACEMENT PARTS - MPD35ST ItemPart/Cat.No.Qty Description Where Used Item Part/Cat. Qty Description Where Used SIT Millivolt Only Misc. Replacement Parts 1 H3357 1 Gas Train Assembly, NG, MV MPD35ST-NM 14 H3210 1 Log Set All 1 H3355 1 Gas Train Assembly, LP, MV MPD35ST-PM Louver Assembly, Upper 15 LB-92449B 2 All Charcoal Honeywell Electronic Only Louver Assembly, Lower, 2 H3356 1 Gas Train Assembly, NG, Elecrtr. MPD35ST-NE 16 LB-92652B 1 All Charcoal (valve access side) MPD35ST-NE & 3 42J
