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Lennox Hearth MPB35ST-NE-B manual

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Table of contents for the manual

  • Page 1

    OTL Report No. 116-F-27-5 US Portland MODELS 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 c[...]

  • Page 2

    2 W ARNING B-Vent appliances are not de sign ed to o per ate in n ega tiv ely pressured environments (pres- sure within the home is less than pressures outside). Significant negatively pressured environ - ments caused by weather , home design, or other devices may impact the operation of these appliances. Negativ e pres - sures may result in poor [...]

  • Page 3

    3 W ARNING I mproper installation, adjust - ment, alteration, service or maintenance can cause injur y or property damage. Refer to this manual. For assistance or additional information consult a qualified installer , service agency or the gas supplier . W ARNING Failure to comply with these i ns ta ll a ti on i ns tr uc t io ns wi l l r es u lt in[...]

  • Page 4

    4 NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. Gas Valve Diagrams See Figure 1 for Millivolt models and Figure 2 For Electronic Models. Figure 2 - Honeywell Electronic Gas Valve F F O N I P S I N O L O R T N O C G I N T I ER Manifold Pressure Port ON / OFF Switch Inlet Pressure Port Electronic Gas Control Valve H I L O W H T P T H T P T P [...]

  • Page 5

    NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. 5 COLD CLIMA TE INSULA TION 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 outside chase cavity between studs and under floor on which appliance rests, if floo[...]

  • Page 6

    6 NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. VENT TERMINA TION CLEARANCES Gas Vent Rule - Gas vent caps are not per - mitted within 8 feet (2.4 mm) of a vertical wall or similar obstruction. Gas vent caps that are located 8' or more from a portion of a building which extends at an angle greater than 45° upward from the horizontal m[...]

  • Page 7

    NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. 7 MINIMUM CLEARANCES TO COMBUSTIBLES Appliance And Vent Clearances Maintai n cleara nces from appliance to combustible materia ls as detailed in T able 6 with the following exception: When the unit is installed with one side flush with a wall, the wall on the other side of the unit must not ext[...]

  • Page 8

    NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. 8 T urn nailing tabs down and secure to the floor with 8d nails or other appropriate fasteners on both sides of appliance. * NOTE: INST ALLA TION DIAGRAMS AND INSTRUCTIONS SHOW THE FRONT OF THE APP LIAN CE AS THE SID E WHI CH HAS V AL VE ACCESS, EXCEPT WHERE NOTED. TYPICAL INST ALLA TION SEQUEN[...]

  • Page 9

    NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. 9 FIREPLACE SPECIFICA TIONS - MPB35ST SPECIFICA TIONS Natural Gas BTU Input 30,000 Propane Gas BTU Input 28,000 B-Vent Size 5 in. (127 mm) NOTES Due to Lenn ox' ongo ing commi tmen t to qua lity , all spec ifica tion s, rat ings and dime nsio ns are subject to change without notice. FRAMIN[...]

  • Page 10

    NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. 10 N otes: • Al l app li anc es ar e fac tor y-e qui ppe d wi th a flexible gas line connector and 1/2 inch shutoff valve (see Figure 19 on Page 14 ). • See Massachusetts Requirements on Page 4 fo r a ddi tio nal re qui rem en ts f or ins tal la tio ns in the state of Massachusetts in the U[...]

  • Page 11

    60 Degrees Maximum 12 Feet (3.7 Meters) Minimum 11 NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. 1" (25 mm) Minimum Firestop Note: Refer to the vent manufacturers instal- lation instructions for variations of venting techniques. If common venting of several units is contemplated, it should be discussed with an architect and the local B[...]

  • Page 12

    Figure 14 Thermopile TH TP TH TP White White Black Spill Switch If any of the original wire as supplied must be replaced, it must be replaced with T ype A WM105 C - 18 gage wire. * Optional Kits - OFF/ON wall switch or remote control receiver . Millivolt Wiring Diagram Appliance mounted O FF / ON Sw itch Schematic Represen - tation Only Field Wired[...]

  • Page 13

    NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. 13 Step 5. CONNECTING GAS LINE All codes require a shut-off valve mounted in the supply line. The orientation of the shut-off valve should face the front . Figure 19 illustrates two methods for connecting the gas supply . A Sediment T rap is recommended to prevent moisture and debris in gas line[...]

  • Page 14

    CONTROL COMP ARTMENT ACCESS INSTRUCTIONS ( Ref. Figure 20 ) Opening Control Compartment Door: Gently depress the outer top corners of the louvered Control Compartment Access Panel until the spring-loaded magnetic catches "pop" it free, allowing it to swing out and down to open. Removing Control Compartment Door: With the panel in the open[...]

  • Page 15

    15 NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. The out side air shut ter shou ld be full y op en when the fireplace is in use and completely closed whe n the fire place is not bei ng used . Closin g it when not in use will prevent outside cold air from entering the dwelling. Operate the actuator through several cycles including the clos[...]

  • Page 16

    16 NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. LOG SET Catalog Number H3210 * Item Description A Log, Center B Log, Left Rear C Log, Left Front D Log, Right Rear E Log, T op Center F Log, Front Center * Item "letters" above correspond to photos on right LOG SET - IDENTIFICA TION REFERENCE Firebox Accessories / Parts Cat. No. Mod[...]

  • Page 17

    17 NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. P o si t i o n T h e G r o o v e A t Th e B ot t o m O f L o g ( A ) O v e r T h e G ra t e An d S li d e It Forward Against The Grate Here Figure 27 READ WARNINGS ON Page 15 BEFORE PROCEEDING 1. Remove the front glass enclosure panel (see Glass Enclosure Panel Removal Instructions , Page 18 [...]

  • Page 18

    NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. 18 E F (Valve Access Side) (Valve Access Side) Position The Round End Of Log (E) Against The Notch Of Log (D) Here. T wo Charred Spots Face The Front D Position Small End of Log (E) on The Notch of Log (C) Here C Log (F) Sits in Front of The Grate Figure 31 10. Place Log (E) as shown in Figure 3[...]

  • Page 19

    19 NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. W ARNINGS • Air shutter adjustment should only be performed by a quali- fied professional service tech - nician. • Ensure front glass panel are in place and sealed during adjustment. CAUTIONS • Soot will be produced if the air shutter is closed too much. Any damage due to carboning res[...]

  • Page 20

    NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. 20 17 Combustible W all Framing Combustible Finished Wall Materials Drywall Bracket/Space r To p of Appliance Louver s To p of Door Frame Hood must be installed as shown . 1 in. Min. (25 mm ) To p Spacer s To p of Applianc e Radiant pane l To p of Door Frame Hood must be installed as shown. IF O[...]

  • Page 21

    21 NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. Step 13. A TT ACHING SAFETY -IN-OPERA TION WARNINGS It is the installer ' s responsibility to ensure these warnings are properly affixed during installation. These warning labels are a critical step in informing consumers of safe operation of this appliance. A PP OS IT IO N D ES M IS ES[...]

  • Page 22

    NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. 22 A i r S hu tt er Adjustment Lever Venturi T ube Arm Pan Burner Valve Access Side of Fireplace Firebox Subfloor Figure 38 In Canada: THE CONVERSION SHALL BE CAR - RIED OUT IN ACCORDANCE WITH THE REQUIREMENTS OF THE PROVINCIAL AUTHORITIES HA VING JURISDICTION AND IN ACCORDANCE WITH THE RE- QUI[...]

  • Page 23

    NOTE: DIAGRAMS & ILLUSTRA TIONS ARE NOT TO SCALE. 23 Pressure Regulator Remove These Components P S I OFF I ON CONTROL I G N I T E Gas Valve Assembly Manifold Pressure T est Port Slotted Cap Spring Adjusting Screw Figure 42 Figure 41 Figure 43 Figure 40 Figure 39 Figure 44 All Models Step 7 . (Refer to Figure 38 on Page 22 and Figure 43 ) VERIF[...]

  • Page 24

    Printed in U.S.A. © 2005 Lennox Hearth Products P/N 850023M REV . D 01/2011 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. 1508 Elm Hill Pike, Sui[...]