Lennox MLDVT-30NE - Manuals

Page 2 - LENNOX HEARTH PRODUCTS • MERIT; TABLE OF CONTENTS; Please read and understand these; WARNING; GENERAL INFORMATION

2 LENNOX HEARTH PRODUCTS • MERIT ® SERIES DIRECT-VENT GAS FIREPLACES • MODELS MLDVT-30/35/40/45 • INSTALLATION INSTRUCTIONS TABLE OF CONTENTS Packaging .........................................Page 2Introduction ......................................Page 2General Information ...........................

Page 3 - edition; Table 1

3 LENNOX HEARTH PRODUCTS • MERIT ® SERIES DIRECT-VENT GAS FIREPLACES • MODELS MLDVT-30/35/40/45 • INSTALLATION INSTRUCTIONS WARNING Improper installation, adjust- ment, alteration, service or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional informat...

Page 4 - Table 3; Series; Table 4; REQUIREMENTS FOR THE COMMON-; Table 2

4 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Figure 2 - Dexen Electronic Gas Valve Pilot Stage Terminal Pressure-Tap (Inlet) Pilot Gas Outlet Supply Gas Inlet Pressure-Tap (Manifold) Burner Stage Terminal Ground (TP) PILOT OUT VENT LO TH TP TH TP HI IN IN Regulator Mounting Screw Test gaug...

Page 5 - Figure 3; HORIZONTAL VENT; Note: When the unit is installed with one; LOCATION

5 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. LENNOX HEARTH PRODUCTS • MERIT ® SERIES DIRECT-VENT GAS FIREPLACES • MODELS MLDVT-30/35/40/45 • INSTALLATION INSTRUCTIONS Figure 3 - Typical Locations N O IT A CI L P P A T N E V P O T APPLICATION TOP VENT TN EV PO T NOI TA CI LP PA RECESSED INS...

Page 6 - VENT TERMINATION CLEARANCES; These instructions should be used as a; Vertical Vent Termination Clearances; Termination Heights For Vents; Figure 6; Horizontal Vent Termination Clearances; Side Elevation View; Minimum; Figure 4 - Multiple Terminations

6 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. 12 X Roof Pitch is X/12 2 FT MIN. 2 FT MIN. Lowest Discharge Opening H* *H = MINIMUM HEIGHT FROM ROOF TO LOWEST DISCHARGE OPENING OF VENT TERMINATION HEIGHTS FOR VENTS ABOVE FLAT OR SLOPED ROOFS Horizontal Overhang Vertical Wall Vent Termination...

Page 7 - EXTERIOR HORIZONTAL VENT TERMINATION CLEARANCE REQUIREMENTS; Figure 7

7 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. EXTERIOR HORIZONTAL VENT TERMINATION CLEARANCE REQUIREMENTS Figure 7 V V V V V F C Fixed Closed Window Operable Window B B A B H M I = Area where Termination is not Permitted = Air Supply Inlet X = Vent Termination V D V 3 ft. 3 ft. A A A = 9” i...

Page 8 - Minimum Mantel Clearances; Top Vent - with One 90 Degree Elbow; Minimum Distance to Unprotected Side Wall; MINIMUM CLEARANCES TO COMBUSTIBLES; When; Table 5; ing flanges on each side of the unit and any adjacent screw heads.; Hearth Extension; Shelf Height Minimum Clearances With Top Venting

8 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. 5 (127) 8-1/4 (209) 14 (356) 12 (305) 19 (483) *Shelf Height ( see table) Do not insulate the space between the appliance and the area above it. Shelf Above Fireplace With Top Venting Figure 9 - Minimum Mantel Clearances 8 (203) 2 (51) 4 (102) 6...

Page 9 - PRE-INSTALLATION STEPS; Removing Glass Panels on Page 31.; Figure 12 - Nailing Flanges; DO NOT; TYPICAL INSTALLATION SEQUENCE; (Page 11) Route gas supply line to; a. Millivolt Appliances –

9 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. WARNING Failure to position the parts in accordance with these diagrams or failure to use only parts specifi- cally approved with this appliance may result in property damage or personal injury. AVERTISSEMENT Risque de dommages ou de blessures s...

Page 10 - FIREPLACE AND FRAMING SPECIFICATIONS; Vent Size; Vertical Venting Through the Ceiling:; Frame ceiling opening; Viewable Glass Size; Framing; Framing should be; Front View

10 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. FIREPLACE AND FRAMING SPECIFICATIONS Vent Size Coaxial DV Vent Size 4-1/2" Inner 7-1/2" Outer Vertical Venting Through the Ceiling: Frame ceiling opening - Use a plumb line from the ceiling above the appliance to locate center of the ve...

Page 11 - FIREPLACE FRAMING SPECIFICATIONS; Table 6; Proper Sizing of Gas Line; Figure 15 - Route Gas Line; Left Side Front; Step 2. ROUTING GAS LINE; mm

11 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. FIREPLACE FRAMING SPECIFICATIONS Schedule 40 Black Iron Pipe Inside Diameter (Inches) Schedule 40 Pipe Length (feet) Natural Gas Propane Gas 0-10 1/2 3/8 10-40 1/2 1/2 40-100 1/2 1/2 100-150 3/4 1/2 150-200 3/4 1/2 Table 6 Notes: • All applianc...

Page 12 - Note: The restrictor is included within the; Approved Vent Components; With the appliance secured in framing, determine

12 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Installation of Vent Restrictor A vent restrictor may be needed with this appliance. The restrictor is installed in the appliance top flue outlet as shown in Figure 16, either before adding vent, from above, or after installation of vent from b...

Page 13 - Note: Convert inches into metric equivalent; Effective Vent Length; Model; Table 7; 7 on Pages 16 and 17 and their associated; Secure VentTM; Figure 5; on; of Vent Restrictor on Page 14 for guidelines.

13 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Note: Convert inches into metric equivalent measurement, as follows: Millimeters (mm) = Inches x 25.4 Centimeters (cm) = Inches x 2.54 Meters (M) = Inches x .0254 T R A H C H T G N E L N O I T C E S T N E V l a n i m o N h t g n e L n o it c e ...

Page 14 - Pages 16 and 17 to select the type

14 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Push the vent component against the previous section until it fully engages, then twist the component clockwise running the dimples down and along the incline channels until they seat at the end of the channels. This seating position is indicat...

Page 15 - Swivel Joint; Figure 22 - Roof Framing; Storm

15 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. If the vent system extends more than 5 feet (1.5m) above the roof flashing, stabilizers may be necessary. Additional screws may be used at section joints for added stability. Guide wires may be attached to the joint for additional sup- port on ...

Page 16 - Figure; be used in this; VERTICAL VENT FIGURES/TABLES; Under no circumstances may sepa-; vent will be required.

16 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. u Ceiling Firestop / Spacer (SV4.5VF) u When using Secure Flex, use Firestop/Spacer SF4.5VF A Vent Restrictor, as shown in Figure 16 Page 12 , must be used in this application Figure 25 - Top Vent - STRAIGHT u Ceiling Firestop / Spacer (SV4.5VF...

Page 17 - Ceiling; Top Vent - THREE ELBOWS; Page 18, and Figures 29

17 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Maintain a minimum 1" (25 mm) clearance to combustibles on the vertical sections. Clear- ances for the horizontal runs are; 3" (76 mm) on top, 1" (25 mm) on sides, and 1" (25 mm) at the bottom. B. Frame exterior wall opening - L...

Page 18 - and SV4.5E90 elbows in the same manner as

18 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Support Brackets Building Support Framing SV4.5E90 Elbow Ceiling Fireplace SV4.5L6/12/24/36/48 Vent Sections Vertical Rise Support Bracket Spacing Every 5 ft (1.52 m) See Figure 17 on Page 13 or Figure 20 on Page 14 for vertical vent section su...

Page 19 - Figure 30 and Table 8.; Termination Guard; Venting Connection and Exterior Wall Recessing; Table 8; See

19 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. LENNOX HEARTH PRODUCTS • MERIT ® SERIES DIRECT-VENT GAS FIREPLACES • MODELS MLDVT-30/35/40/45 • INSTALLATION INSTRUCTIONS J. Assemble vent run to exterior wall - If not previously measured, locate the center of the vent at the exterior wall. Pr...

Page 20 - Wall; Secure Vent; When using Secure Flex,; Typical termination shown.; horizontal vent run is needed,; Under no circumstances, may separate sections of

20 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. See Table 8 as an aid in venting component selection for a particular range of exterior wall thicknesses. See Table 8 as an aid in venting component selection for a particular range of exterior wall thicknesses. H u Wall Firestop/Spacer (SV4.5H...

Page 21 - HORIZONTAL VENT FIGURES / TABLES; to a maximum horizontal run of 20 feet.

21 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. V H H1 Wall Firestop/Spacer (SV4.5HF) Wall Firestop/Spacer (SV4.5HF) When using Secure Flex, use Firestop/Spacer SF4.5HF. Ceiling Firestop/Spacer (SV4.5VF) Note - When using Secure Flex TM , use Firestop/Spacer SF4.5VF. Table E H + H 1 Maximum ...

Page 22 - See Table 8 on Page 20 as

22 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Example: If 20 feet total (H+H 1 ) horizontal vent run is needed, then 4 feet minimum of (V) vertical vent will be required. This table shows a 1(V) to 5(H) ratio. For every 1 foot of (V) vertical, you are allowed 5 feet of (H+ H 1 ) horizontal...

Page 23 - When Secure Flex; firestop / spacer for ceilings and the SF4.5 HF; NOTE: Outer pipe is pulled away to

23 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. D. Install Firestop / Spacers at ceilings and walls - When Secure Flex penetrates a wall or ceiling, a firestop / spacer is required: use the SF4.5 VF firestop / spacer for ceilings and the SF4.5 HF firestop / spacer for walls. See the appropri...

Page 24 - Note: The electronic appliance must be con-; INTERMITTENT ELECTRONIC WIRING DIAGRAM; switch (rocker switch) is factory installed; CAUTION; Verify proper operation after servicing.

24 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. LENNOX HEARTH PRODUCTS • MERIT ® SERIES DIRECT-VENT GAS FIREPLACES • MODELS MLDVT-30/35/40/45 • INSTALLATION INSTRUCTIONS Step 4. FIELD WIRING B. Electronic Wiring (see Figure 38 ) Note: The electronic appliance must be con- nected to the main ...

Page 25 - Note: Remote receiver should be located in the; BLOWER CONTROL CIRCUIT WIRING; Junction Box; WIRING: OPTIONAL FORCED; Blower Access

25 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. LENNOX HEARTH PRODUCTS • MERIT ® SERIES DIRECT-VENT GAS FIREPLACES • MODELS MLDVT-30/35/40/45 • INSTALLATION INSTRUCTIONS Note: Remote receiver should be located in the wall, or if installed in the control compartment, pulled all the way forwar...

Page 26 - Step 6. CONNECTING GAS LINE; 0 illustrates two methods for connecting the; Gas; Min; external to the appliance between the appliance

26 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Gas Flex Line Gas Shut-Off Valve Valve Piezo Spring Door Latch Lower Control Compartment LENNOX HEARTH PRODUCTS • MERIT ® SERIES DIRECT-VENT GAS FIREPLACES • MODELS MLDVT-30/35/40/45 • INSTALLATION INSTRUCTIONS Figure 41 Step 6. CONNECTING GAS ...

Page 27 - Note: Using a soapy water solution is an effec-; C. When the gas lines are tested and leak free,; Never use an open flame to; Step 7. VERIFYING APPLIANCE; tongues of flame on the burner. Make sure; Note: Lighting Instructions are also found on; Millivolt Appliance Checkout; To light the burner turn “ON” the remote wall; TEST ALL CONNECTIONS FOR GAS LEAKS

27 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Turn on gas supply and test for gas leaks, us- ing a gas leak test solution (also referred to as bubble leak solution). Note: Using a soapy water solution is an effec- tive leak test solution but it is not recommended, because the soap residue ...

Page 28 - Glowing Embers; Bag of Glowing; GLOWING EMBERS, AND LOGS; Turn off all electricity to the appliance; Place Volcanic

28 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. REFERENCE Firebox Accessories / Parts Cat. No. Model No. Description 88L53 FGE Bag of Glowing Embers 80L42 FDVS Bag of Decorative Volcanic Stone Glowing Embers Bag of Glowing Embers (rockwool) Separate into Quarter Size (separate) Pieces Step 8...

Page 29 - Catalog Number for the entire log set:

29 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. MLDVT-30 & MLDVT-35 LOG PLACEMENT (model-35 shown; model-30 similar) Figure 47 Step 2 Step 3 Step 4 Step 1 Log Number Description 1 Rear Log 2 Left Front Log 3 Right Front Log 4 Left Cross Log 5 Right Cross Log Catalog Number for the entire...

Page 31 - sure spacing on both sides is equal.

31 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Step 9. INSTALLATION AND REMOVAL OF GLASS DOOR Air Shutter Adjustment Guidelines : Amount of Primary Air Flame Color Air Shutter Adjustment If air shutter is closed too far Flame will be orange Air shutter gap should be increased If air shutter...

Page 32 - Main Burner Factory Air Shutter; Air Shutter; - Burner Air Shutter Adjustment; Adjustment Rod Up; 0 (adjustment rod is located in the lower; When satisfied that the burner flame appear; Burner Air Shutter Adjustment Procedure

32 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. WARNINGS • 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 t...

Page 33 - HOOD INSTALLATION; (Refer to Figure 53) All models must have a hood installed prior to; FINISHING REQUIREMENTS - Wall Details; See Page 5 for Cold Climate Insulation; This area must; - Combustible Wall Framing

33 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Step 11. HOOD INSTALLATION (Refer to Figure 53) All models must have a hood installed prior to operating. Install hood by sliding it into the slots on the lower edge of the cabinet top. FINISHING REQUIREMENTS - Wall Details Complete finished in...

Page 34 - Si vous ne trouvez pas les étiquettes, veuillez; COLOCACIóN DE ADVERTENCIAS DE; (ver la Figura A) o en el termostato de pared (ver la Figura; WARNINGS; the fireplace by turning it on and off). Clean the; Figure A

34 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Step 12. 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 ap...

Page 35 - 5 Degree Elbow; INSTALLATION ACCESSORIES; Listed Secure VentTM Components; High Wind

35 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Cat. No. Model Description 77L70 SV4.5L6 6 Inch (152 mm) 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-...

Page 36 - Through Wall Shield Kit; INSTALLATION ACCESSORIES CONTINUED; All compressed flex vents can be expanded up to two times.

36 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Flex LENNOX HEARTH PRODUCTS • MERIT ® SERIES DIRECT-VENT GAS FIREPLACES • MODELS MLDVT-30/35/40/45 • INSTALLATION INSTRUCTIONS Cat. # Model Description H1969 SF4.5HT-2 Horizontal Square Termina- tion for flex (without flex) 77L87 SFKIT12S Squar...

Page 37 - assume les responsabilités liées à la conversion.

37 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Millivolt SIT Systems Propane Gas to Natural Gas Conversion Kits Models Catalog No. MLDVT-30 H6165 MLDVT-35 H7293 MLDVT-40 H7294 MLDVT-45 85L66 Millivolt SIT Systems Natural Gas To Propane Gas Conversion Kits Models Catalog No. MLDVT-30 H7672 M...

Page 38 - Millivolt Appliances; SIT Systems; 8 and the instructions provided with the; Burner Assembly; Note: If the igniter is damaged, a replacement

38 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. Figure 55 Millivolt Appliances Step 5. SIT Systems - Refer to Figure 55 and the instructions provided with the kit. Using a Torx T20 (with 1/4" shank and center hole), tool or standard flat screwdriver remove and discard the three pressure ...

Page 39 - VERIFY THE PROPER ORIFICE SIZE; Table 9 for orifice sizes for natural and pro-; BURNER; Table 9

39 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. LENNOX HEARTH PRODUCTS • MERIT ® SERIES DIRECT-VENT GAS FIREPLACES • MODELS MLDVT-30/35/40/45 • INSTALLATION INSTRUCTIONS Step 10. Reassemble the remaining compo- nents by reversing the procedures outlined in the preceding steps. Step 11. Attac...