INSTALLATION INSTRUCTIONS MPD35 Direct-Vent Gas Fireplaces P/N 850024M Rev. J 01/2011 MODELS This manual is one of a set of two supporting this product. Refer to P/N 875025M for Care and Operation Instructions. Ce manuel est disponible en francais, simplement en faire la demande. Numéro de la pièce 850024CF. MILLIVOLT: MPD35ST-NM-B MPD35ST-PM-B MPD35PF-NM-B MPD35PF-PM-B ELECTRONIC: MPD35ST-NE-B MPD35PF-NE-B Portland US INSTALLER: Leave this manual with the appliance.
PACKAGING TABLE OF CONTENTS Packaging..........................................Page Introduction.......................................Page General Information...........................Page Requirements for the Commonwealth of Massachusetts..Page New York City Approval......................Page Cold Climate Insulation......................Page Manufactured Home Requirements...Page Location.............................................Page Vent Termination Clearances . ...........
WARNING Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the gas supplier. WARNING Failure to comply with these installation instructions will result in an improperly installed and operating appliance, voiding its warranty. Any change to this appliance and/or its operating controls is dangerous.
11.0" WC (2.74 kPa) 13.0" WC (3.23 kPa) Table 2 Manifold Gas Supply Pressure (all models) Fuel # Low High Natural Gas (Lo) 2.2" WC (0.55 kPa) (Hi) 3.5" WC (0.87 kPa) Propane (Lo) 6.3" WC (1.57 kPa) (Hi) 10.0" WC (2.49 kPa) Table 3 Test gauge connections are provided on the front of the millivolt and electronic gas control valve (identified IN for the inlet and OUT for the manifold side).
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 outside chase cavity between studs and under floor on which appliance rests, if floor is above ground level. Gas line holes and other openings should be caulked or stuffed with unfaced fiberglass insulation.
Be aware that this is a heat producing appliance. Objects placed above the unit are exposed to elevated temperatures. Do not insulate the space between the appliance and the area above it (see Figure 8 ). Vertical Vent Termination Clearances TERMINATION HEIGHTS FOR VENTS ABOVE FLAT OR SLOPED ROOFS Horizontal Overhang 2 FT MIN. 2 FT MIN. The minimum height from the base of the appliance to the underside of combustible materials used to construct a utility shelf in this fashion is shown in Figure 8.
Exterior HORIZONTAL Vent TERMINATION Clearance Requirements NOTE: Local Codes Or Regulations May Require Different Clearances. * See Item D in the Text Below. P N NOTE: Location Of The Vent Termination Must Not Interfere With Access To The Electrical Service. Inside Corner Detail Exterior Wall *18” Horizontal Termination G V 6” N O Q V V Ventilated Soffit A Inside Corner in U.S. A == 9” 12” in Canada Detail D H 3 ft.
MINIMUM CLEARANCES TO COMBUSTIBLES Appliance And Vent Clearances The appliance is approved with zero clearance to combustible materials on all sides (as detailed in Table 5), 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 extend beyond the front edge of the unit. In addition, when the unit is recessed, the side walls surrounding the unit must not extend beyond the front edge of the unit (see Figure 3). *Note: 3 in.
MINIMUM CLEARANCES* WARNING Inches (millimeters) Sides 1/2 in. (13) 0 (0) from Spacers Or Dimples ** Top Spacers 0 (0) Floor 0 (0) From Bottom of Unit To Ceiling 72 (1829) Vent 3 (76) Top* / 1 (25.4) Sides & Bottom Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this appliance may result in property damage or personal injury. AVERTISSEMENT SERVICE CLEARANCES Feet (meters) Front, Back, Sides 3 feet (0.
Step 4. (Page 14) Install the vent system and exterior termination. Pressure Relief Plates REMOVE CARDBOARD BEFORE USING Step 5. (Page 26) Field Wiring REMOVE CARDBOARD BEFORE USING Remove Cardboard Before Using Appliance Figure 11 TYPICAL INSTALLATION SEQUENCE The typical sequence of installation is outlined below. However, each installation is unique and may result in variations to the steps described. a.
fireplace specifications - mpd35st Fireplace Framing Specifications SPECIFICATIONS Natural Gas BTU Input 30,000 Propane Gas BTU Input 28,000 Co-axial DV Vent Size 4-1/2" Inner / 7-1/2" Outer Notes: • Inches (millimeters) • Minimum Framing Stud Size is 2 x 4 • See side views of fireplace below for gas line inlet location options. ***This dimension does not include the addition of drywall to the inside of framing or clearance for the Side Vent Seal Cap. Adjust accordingly for your installation.
fireplace specifications - mpd35PF Fireplace Framing Specifications SPECIFICATIONS Natural Gas BTU Input 30,000 Propane Gas BTU Input 28,000 Co-axial DV Vent Size 4-1/2" Inner / 7-1/2" Outer Notes: • Inches (millimeters) • Minimum Framing Stud Size is 2 x 4 • See side views of fireplace below for gas line inlet location options. ***This dimension does not include the addition of drywall to the inside of framing or clearance for the Side Vent Seal Cap. Adjust accordingly for your installation.
Step 2. Routing Gas Line Route a 1/2" (13 mm) gas line to the left side of the appliance as shown in Figure 15. Gas lines must be routed, constructed and made of materials that are in strict accordance with local codes and regulations. All appliances are factory-equipped with a flexible gas line connector and 1/2 inch shutoff valve. (See Step 6 on Page 27). 3-1/8" (79 mm) 5-5/8" (143 mm) Also see Figures 13 and 14.
Securing Screws Step 4. Install the Vent System Top Vent Vent Seal Cap General Information (OUTSIDE of Appliance) These instructions should be used as a guideline and do not supersede local codes in any way. Install venting according to local codes, these instructions, the current National Fuel Gas Code (ANSI-Z223.1) in the USA or the current standards of CAN/CSA-B149.1 in Canada.
Vertical Termination Systems (Roof) See Figure 19 and Figures 29 through 34 on Pages 18, 19 and 20 and their associated Vertical Vent Tables which illustrate the various vertical venting configurations that are possible for use with these appliances. Secure Vent™ pipe applications are shown in these Figures; Secure Flex™ pipe may also be used.
Vertical (Offset) Installation Analyze the vent routing and determine the quantities of vent sections and number of elbows required. Refer to Vertical Vent Figures and Tables on page 15 to select the type of vertical installation desired. Vent sections are available in net lengths of 4-1/2" (114 mm), 10-1/2" (267 mm), 22-1/2" (572 mm), 34-1/2" (876 mm) and 46-1/2" (1181 mm). Refer to the Effective Vent Length Chart on page 15 for an aid in selecting length combinations.
F. Change vent direction to horizontal/inclined run - At transition from or to a horizontal/inclined run, install the SV4.5E45 and SV4.5E90 elbows in the same manner as the straight vent sections. The elbows feature a twist section to allow them to be routed about the center axis of their initial collar section to align with the required direction of the next vent run element.
VERTICAL Vent Figures/Tables Note: Secure Vent (rigid vent pipe) is shown in the figures; Secure Flex (flexible vent pipe) may also be used. Table A H Maximum feet (meter) feet (meter) 2 (0.610) 1 (0.305) 4 (1.219) 2 (0.610) 6 (1.829) 3 (0.914) 8 (2.438) 4 (1.
VERTICAL Vent Figures / Tables (continued) Table C H+H1 Maximum H Maximum H1 V Minimum feet (meter) feet (meter) feet (meter) 5 (1.524) 2 (0.610) 1 (0.305) 10 (3.048) 4 (1.219) 2 (0.610) 15 (4.572) 6 (1.829) 3 (0.914) 20 (6.096) 8 (2.438) 4 (1.219) V + V1 + H + H1 = 40 feet (12.2 m) Max H = 8 feet (2.438 meters) Max. H + H1 = 20 feet (6.096 meters) Max. u Ceiling Firestop / Spacer (SV4.5VF) vWall Firestop/ Spacer (SV4.5HF) V1 u Ceiling Firestop / Spacer (SV4.
Horizontal (Outside Wall) Termination System Figures 34, and Figures 37 to 42 on pages 22 to 24 and their associated Horizontal Vent Table illustrate the various horizontal venting configurations that are possible for use with these appliances. Secure Vent pipe applications are shown in these figures; Secure Flex pipe may also be used.
J. Assemble vent run to exterior wall - If not previously measured, locate the center of the vent at the exterior wall. Prepare an opening as described in Step B. Assemble the vent system to point where the terminus of the last section is within 7 in. (178 mm) to 11-1/4 in. (286 mm) inboard of the exterior surface to which the SV4.5 HT termination is to be attached, see Figure 36. If the terminus of the last section is not within this distance, use the telescopic vent section SV4.
HORIZONTAL Vent Figures/Tables Note: Secure Vent components (rigid vent pipe and terminal) are shown in the figures; Secure Flex components (flexible vent pipe and terminal) may also be used. Note: Two 45 degree elbows may be used in place of one 90 degree elbow. The same rise to run ratios, as shown in the venting figures for 90 elbows, must be followed if 45 degree elbows are used.
HORIZONTAL Vent Figures/Tables (continued) Table G H+H1 Maximum H H1 vWall Firestop/ Spacer (SV4.5HF) feet (meter) feet (meter) feet (meter) 5 (1.524) 2 (0.610) 1 (0.305) 10 (3.048) 4 (1.219) 2 (0.610) 15 (4.572) 6 (1.829) 3 (0.914) 20 (6.096) 8 (2.438) 4 (1.219) u Ceiling Firestop / Spacer (SV4.5VF) Square termination (SV4.5HT-2) shown V Minimum H Maximum V + H + H1 = 40 feet (12.2 m) Max H = 8 feet (2.438 meters) Max. H + H1 = 20 feet (6.096 meters) Max.
HORIZONTAL Vent Figures/Tables (continued) uWhen using Secure Flex, use Firestop / Spacer SF4.5VF vWhen using Secure Flex, use Firestop / Spacer SF4.5HF Example: If 20 feet total (H+H1+H2) horizontal vent run is needed, then 4 feet minimum of (V) vertical vent will be required. v Wall Firestop / Spacer (SV4.5HF) Note: See Table 8 as an aid in venting component selection for a particular range of exterior wall thicknesses. This table shows a 1(V) to 5(H) ratio.
Vertical or Horizontal Venting Using Secure Flex Kits and Components Secure Flex venting kits and components may be used in any venting application where rigid Secure Vent (SV4.5) direct vent components can be used. All restrictions, clearances and allowances that pertain to the rigid piping apply to the flexible venting. Secure Flex kits may not be modified; also, under no circumstances may separate sections of flex pipe be joined together.
Step 5. Field Wiring Refer to Section A for millivolt appliances and Section B for electronic appliances. The gas valve is set in place and pre-wired at the factory on both models. CAUTION Ground supply lead must be connected to the wire attached to the green ground screw located on the outlet box. See Figures 46 & 47. Failure to do so will result in a potential safety hazard.
Important Note: The gas valve OFF/ON switch is shown in Figure 46 on Page 26. It is integral with the gas valve and should be set to the ON position. WARNING Electronic models of these appliances are equipped with a threeprong (grounding) plug utilized in connecting the electronic components to the junction box in the lower compartment. This grounding plug provides protection against shock hazard and should be plugged directly into the properly grounded threeprong receptacle.
Plug blower into this receptacle Green White Ground - Green Neutral - White 120 VAC - Black Black Junction Box Blower Ground * Wall-mounted ON/ OFF Blower Switch or Variable Speed Control Switch. Tab Broken Tab Intact Red Green Ground Screw View A J-Box Wiring when using unit mounted relay module. J-BOX WIRING FOR WALL SWITCH BLOWER CONTROL Hot Side of Receptacle Optional Blower Junction Box Step 8.
The flame should project 1" (25 mm) beyond the hood at all three ports (see Figure 52). Replace logs if removed for pilot inspection. Optional Gas Flex-Line Connector 3/8" NPT x 3/8" Flare Fitting Gas Valve 1/2" x 3/8" Flare Shut-Off Valve To light the burner; turn “ON” the remote wall switch and rotate the gas valve control knob counterclockwise to the “ON” position (“ON” will be at the top side of the valve).
Bottom View of Logs (in packaging) Log set - iDENTIFICATION LOG SET Catalog Number H3210 * Item Description A MPD-33/35/40/45 Log B Log, Left Rear C Log, Right D Log, Top Center E Log, Top/Left F Log, Top/Right C A B F * Item "letters" above correspond to photos on right D E REFERENCE Firebox Accessories / Parts Cat. No. Model No.
INSTALLATION STEPS: 7. Place Log (B) as shown in Figure 57. READ WARNINGS ON Page 32 BEFORE PROCEEDING 1. Remove the front glass enclosure panel (see Glass Enclosure Panel Removal Instructions, Page 33 ). 2. Remove the following from firebox; log set, bag of embers and bag of vermiculite. Handle logs carefully to prevent breakage. 3. Ensure the Grate is properly installed in the firebox with the 4 legs of the grate fitting into the 4 dimples on the firebox floor. 4.
10. Place Log (E) as shown in Figure 60. Position The Round End Of Log (E) Against The Notch Of Log (D) Here. Two Charred Spots Face The Front E D C Position Small End of Log (E) on The Notch of Log (C) Here (Valve Access Side) Figure 60 11. Place Log (F) as shown in Figure 61.
Step 10. Removing and Installing the Glass Door WARNING • Do not attempt to substitute the materials used on these doors, or replace cracked or broken glass. • Handle this glass with extreme care! Glass is susceptible to damage – Do not scratch or handle roughly while reinstalling the glass door frame. • The glass door(s) of this appliance must only be replaced as a complete unit as provided by the manufacturer. Do not attempt to replace broken, cracked or chipped glass separately.
WARNINGS • Air shutter adjustment should only be performed by a qualified professional service technician. • 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 sooting, resulting from improperly setting the air shutter, is not covered under the warranty. • The air shutter door and nearby appliance surfaces are hot. Exercise caution to avoid injury while adjusting flame appearance.
Decrease Shutter Opening In This Direction Combustible Wall Framing Combustible Finished Wall Materials Orifice Increase Shutter Opening In This Direction Air Shutter Adjusting Rod Ref. Air shutter Patent: U.S. Pat. 5,553,603 Note - Burners are omitted in this view for clarity. MPD35ST/PF Figure 64 Natural Gas Propane Gas 1/8” 3.2mm 1/4” 6.4mm 1 in. Min. (25 mm) Drywall Bracket/Spacer Top of Appliance Louvers Top of Door Frame Hood must be installed as shown.
STEP 13. ATTACHING SAFETY-IN-OPERATION 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.
Installation Accessories Listed Secure Vent™ Components Cat. No. H1968 H2152 H4687 Model SV4.5HT-2 SV4.5CGV-1 SV4.5CTS Cat. No. Description Horizontal Square Termination With Firestop / spacer (H2246) & Adaptor (74L61) SV4.5CTS-B 77L70 SV4.5L6 6 Inch (152 mm) (Rigid) 77L71 SV4.5L12 12 Inch (305 mm) 77L72 SV4.5L24 24 Inch (610 mm) 77L73 SV4.5L36 36 Inch (914 mm) 77L74 SV4.5L48 48 Inch (1219 mm) 77L75 SV4.5LA Telescopic Length Slip Section (2" to 7-1/2" rigid) 77L76 SV4.
INSTALLATION ACCESSORIES CONTINUED Listed Secure Vent™ Components Listed Secure Flex™ Components Cat. # Model Description 17M52 SV4.5HGS-1 Te r m i n a t i o n G u a r d , Square (1 pack) Ref. Cat. # SV4.5HGS-12 60L10 SV4.5HGS SF-18 98K03 SF-12 H5816 750,247M SV4.5HTSK SV4.5TWSK10 Termination Shroud (Guard) for Horizontal Square Termination (1 pack) (ref. instr. #750246M) Through Wall Shield Kit (used to shield the directvent pipe from blown insulation) Ref. instr.
Gas Conversion Kits WARNING This conversion kit shall be installed by a qualified service agency in accordance with the manufacturer’s instructions and all applicable codes and requirements of the authority having jurisdiction. If the information in these instruction is not followed exactly, a fire, explosion or production of carbon monoxide may result causing property damage, personal injury or loss of life. The qualified service agency is responsible for the proper installation of this kit.
I OFF ON CONTROL Pan Burner PSI Venturi Tube Arm Valve Access Side of Fireplace Manifold Pressure Test Port Slotted Cap Adjusting Screw Firebox Subfloor Figure 66 Spring Figure 69 c.. Locate the two (2) latches at the top of the control compartment. To disengage the two latches from the bottom vee-flange of the glass enclosure panel, reach for the handles located towards the back of the latches and pull the handles down toward the front of the appliance. d..
b. Install the burner as shown in Figure 72. Ensure that the arm of the venturi of the burner is hooked onto the air shutter adjustment lever (refer to Figure 66 on Page 40 ). The primary air opening can be adjusted by rotating the adjustment lever from beneath the firebox floor. Refer to Figure 64 on Page 35 for the recommended minimum primary air shutter opening setting. Step 9. Reassemble the remaining components by reversing the procedures outlined in the preceding steps.
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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. Printed in U.S.A. © 2005 by Lennox Hearth Products 44 P/N 850024M REV. J 01/2011 1508 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.