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Vanguard Managed Solutions MBDV41 - page 1
DIRECT -VENT FIREPLACE ® OWNER’S OPERA TION AND INST ALLA TION MANUAL MBDV37 AND MBDV41 Save this manual for future reference. This appliance may be installed as an OEM installation in a manufactured (mobile) home and must be installed in accordance with the manufacturer's instructions and the Manufactured Home Construction and Safety Stand ...
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Vanguard Managed Solutions MBDV41 - page 2
2 106497 DIRECT -VENT FIREPLACE ® SAFETY INFORMA TION 1. Models MBDV37 and MBDV41 use a millivolt gas control valve and a milli- volt ignition system. The fireplace in- cludes a manual variable blower and an ON/OFF hand-held remote control. 2. This appliance is only for use with the type of gas indicated on the rating plate. This appliance is conv ...
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Vanguard Managed Solutions MBDV41 - page 3
3 106497 OWNER’S MANUAL PRODUCT IDENTIFICA TION LOCAL CODES Install and use fireplace with care. Follow all local codes. In the absence to local codes, use the current National Fuel Gas Code, ANS Z223.1 , also known as NFPA 54* (USA) or the current CAN/CGA-B149[.1 or .2] Installation Codes (Canada) . *Available from: American National Standards I ...
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Vanguard Managed Solutions MBDV41 - page 4
4 106497 DIRECT -VENT FIREPLACE ® Fireplace size D x FW x RW 37" 18 1 / 2 " 37" 14" 41" 18 1 / 2 " 41" 18" PRE-INST ALLA TION PREP ARA TION LOCATION AND SPACE REQUIREMENTS Determine the safest and most efficient loca- tion for your Vanguard direct-vent fireplace. Make sure that rafters and wall studs are not ...
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Vanguard Managed Solutions MBDV41 - page 5
5 106497 OWNER’S MANUAL C B A D E F G T op of Louver Opening 3 2 1 4 5 6 7 W all 29" 13" 10 1 / 4 " 8 3 / 4 " 37" 41" 37 1 / 2 " 41 1 / 2 " 58" 9 1 / 4 " 41" Note : Where two numbers are given the top number is exclusive to the 37" Fireplace and the bottom number is exclusive to the 41&q ...
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Vanguard Managed Solutions MBDV41 - page 6
6 106497 DIRECT -VENT FIREPLACE ® Fixed Closed Openable Fixed Closed Openable V V V V V V V V X X V X G G J F B B K N H I A N E L D B M A C B V V A G G B TERMINA TION CAP AIR SUPPL Y INLET GAS METER RESTRICTED AREA (TERMINA TION PROHIBITED) A = clearance above grade, veranda, porch, deck, or balcony [*12 inches (305mm) minimum] B = clearance to wi ...
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Vanguard Managed Solutions MBDV41 - page 7
7 106497 OWNER’S MANUAL WARNING: Read all instruc- tions completely and thoroughly before attempting installation. Failure to do so could result in serious injury, property damage or loss of life. Operation of im- properly installed and maintained venting system could result in serious injury, property damage or loss of life. WARNING: Seal all ve ...
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Vanguard Managed Solutions MBDV41 - page 8
8 106497 DIRECT -VENT FIREPLACE ® INSTALLATION FOR HORIZONTAL TERMINATION 1. Determine the route your horizontal venting will take. Note: The location of the horizontal vent termination on the exterior wall must meet all local and national building codes and must not be easily blocked or obstructed. Snorkel terminations are available for terminati ...
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Vanguard Managed Solutions MBDV41 - page 9
9 106497 OWNER’S MANUAL UP UP VENTING INST ALLA TION Continued (Framing Detail) 10" (254mm) 10" (254mm) 7 1 / 2 " (190mm) V ent Opening Combustible W all V ent Opening Noncombustible W all Figure 12 - Vent Opening Requirements Continued 3. Attach vent pipe assembly to the fire- place. Set fireplace in front of it’ s perma- nent l ...
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Vanguard Managed Solutions MBDV41 - page 10
10 106497 DIRECT -VENT FIREPLACE ® VENTING INST ALLA TION Continued UP UP Horizontal V enting V ertical (V) Horizontal (H) 37" min. 17" max. Figure 16 - Horizontal Termination Con- figuration for Rigid Venting Figure 17 - Horizontal Termination Configuration for Rigid Venting Using One 90 ° Elbow Figure 18 - Horizontal Termination Using ...
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Vanguard Managed Solutions MBDV41 - page 11
11 106497 OWNER’S MANUAL VENTING INST ALLA TION Continued UP V enting with T w o 90 ° Elbows V ertical (V) Horizontal (H 1 ) Horizontal (H 1 ) + Horizontal (H 2 ) 5' min. 2' max. 6' max. 6' min. 4' max. 12' max. 7' min. 6' max. 18' max. 8' min. 8' min. 20' max. 20' max. 8' max ...
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Vanguard Managed Solutions MBDV41 - page 12
12 106497 DIRECT -VENT FIREPLACE ® Note: If an offset is needed to avoid ob- structions, you must support the vent pipe every 3 feet. Use wall straps for this pur- pose (see Figure 21). Whenever possible, use 45 ° elbows instead of 90 ° elbows. The 45 ° elbow offers less restriction to the flow of the flue gases and intake air . 5 . Place the f ...
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Vanguard Managed Solutions MBDV41 - page 13
13 106497 OWNER’S MANUAL VENTING INST ALLA TION Continued Continued Figure 23 - Cathedral Ceiling Support Box Installation Non-hardening Mastic under all edges of support box before nailing Figure 24 - Installed Cathedral Ceiling Support Box Vertical Termination Configurations Figures 25 through 28 show four different configurations for vertical ...
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Vanguard Managed Solutions MBDV41 - page 14
14 106497 DIRECT -VENT FIREPLACE ® V er tical V enting V = 40' max. Figure 28 - Vertical Rigid Venting Con- figuration With No Horizontal Run VENTING INST ALLA TION Continued V enting with T w o 9 0 ° E lbo ws V ertical (V 1 ) Horizontal (H) 5' min. 6' max. 6' min. 12' max. 7' min. 18' max. 8' min. 20' ...
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Vanguard Managed Solutions MBDV41 - page 15
15 106497 OWNER’S MANUAL VENTING INST ALLA TION Continued HIGH ALTITUDE INSTALLATION Your Vanguard direct-vent fireplace has been AGA tested and approved for eleva- tions from 0-2000 feet and CGA certified for elevations from 0-4500 feet. When installing this fireplace at an elevation above 2000 feet (in the USA), you may need to decrease the inp ...
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Vanguard Managed Solutions MBDV41 - page 16
16 106497 DIRECT -VENT FIREPLACE ® CHECK GAS TYPE Use proper gas type for the fireplace unit you are installing. If you have conflicting gas types, do not install fireplace. See dealer where you purchased the fireplace for proper fireplace according to your gas type. FIREPLACE INST ALLA TION NOTICE: This heater is intended for use as supplemental ...
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Vanguard Managed Solutions MBDV41 - page 17
17 106497 OWNER’S MANUAL FIREPLACE INST ALLA TION Continued WARNING: Never touch the blower wheel while in operation. WARNING: Failure to position the parts in accordance with sup- plied diagrams or failure to use only parts specifically approved with this heater may result in dam- age or personal injury. WARNING: A qualified ser- vice person mus ...
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Vanguard Managed Solutions MBDV41 - page 18
18 106497 DIRECT -VENT FIREPLACE ® O F F P I L O T O N P I L O T EA 16AI 7 TPTH TP TH Figure 35 - Wall Switch Wiring Diagram WARNING: Do not wire remote wall switch to main power supply (Standard 120v household current). WALL SWITCH INSTALLATION Since the fireplaces use a valve that operates on millivolt current generated by the pilot, a wall swit ...
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Vanguard Managed Solutions MBDV41 - page 19
19 106497 OWNER’S MANUAL FIREPLACE INST ALLA TION Continued CAUTION: Use only new, black iron or steel pipe. Inter- nally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of 1/2" diameter or greater to allow proper gas volume to fireplace. If pipe is too small, undue loss of pressure will occur. INSTALLING ...
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Vanguard Managed Solutions MBDV41 - page 20
20 106497 DIRECT -VENT FIREPLACE ® O F F P I L O T O N P I L O T EA 16AI 7 TPTH TP TH Pressure Testing Gas Supply Piping System Test Pressures In Excess Of 1/2 PSIG (3.5 kPa) 1. Disconnect fireplace and its individual equipment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig (3.5 kPa) will damage fireplace gas regulato ...
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Vanguard Managed Solutions MBDV41 - page 21
21 106497 OWNER’S MANUAL FIREPLACE INST ALLA TION Continued Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa) 1. Close equipment shutoff valve (see Fig- ure 43). 2. Pressurize supply piping system by ei- ther opening propane/LP supply tank valve for propane/LP gas fireplace or opening main gas valve located on or near gas meter for natural ...
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Vanguard Managed Solutions MBDV41 - page 22
22 106497 DIRECT -VENT FIREPLACE ® REMOVING/REPLACING GLASS DOOR CAUTION: Do not operate this fireplace with a broken glass door panel. Do not operate this fire- place without the glass door panel securely in place. For replace- ment part information see Re- placement Parts , page 35. 1. Remove the upper louver panel by lift- ing upward and out (s ...
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Vanguard Managed Solutions MBDV41 - page 23
23 106497 OWNER’S MANUAL INSTALLING OPTIONAL BRICK LINER D8037A/D8041 WARNING: If fireplace has been running, turn off and un- plug fireplace. Let cool before installing brick liner. This brick liner kit is optional. You may purchase brick liner from your local dealer or see Accessories , page 38. CAUTION: Always handle brick panels with two hand ...
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Vanguard Managed Solutions MBDV41 - page 24
24 106497 DIRECT -VENT FIREPLACE ® 1 2 3 5 7. Pull ember material apart into pieces no larger than a dime. Place these pieces loosely and sparingly directly onto the exposed section of the front burner and along the space between the burner and grate prongs (see Figure 55). This will create the glowing ember ap- pearance as the flame touches the e ...
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Vanguard Managed Solutions MBDV41 - page 25
25 106497 OWNER’S MANUAL OPERA TING GUIDELINES AND MAINTENANCE INSTRUCTIONS When lit for the first time, the appliance may emit a slight odor for about 16 - 24 hours. This is normal and is due to the “curing” of the logs and the “burn-in” of internal paints and lubricants used in the manufacturing process. Keep compartments, logs, burners ...
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Vanguard Managed Solutions MBDV41 - page 26
26 106497 DIRECT -VENT FIREPLACE ® O F F P I L O T O N P I L O T EA 16AI 7 TPTH TP TH OPERA TING FIREPLACE WARNING: If you do not fol- low these instructions exactly, a fire or explosion may result caus- ing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follo ...
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Vanguard Managed Solutions MBDV41 - page 27
27 106497 OWNER’S MANUAL O F F P I L O T O N ON OFF REMOTE ON OFF INSPECTING BURNERS Check pilot flame pattern and burner flame patterns often. PILOT ASSEMBLY The pilot assembly is factory preset for the proper flame height. Alterations may have occurred during shipping and handling. Call a qualified service person to readjust the pilot if necess ...
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Vanguard Managed Solutions MBDV41 - page 28
28 106497 DIRECT -VENT FIREPLACE ® PILOT AND BURNERS • Remove ember material before cleaning burners and replace when cleaning is complete. • Burner and controls should be cleaned with compressed air to remove dust, dirt, or lint. • Use a vacuum cleaner or small, soft bristled brush to remove excess dust, dirt, or lint. WARNING: Only parts s ...
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Vanguard Managed Solutions MBDV41 - page 29
29 106497 OWNER’S MANUAL BEFORE YOU BEGIN The conversion parts are packaged with the fireplace. Please check the contents before beginning this conversion. Each model in- cludes a brass main burner orifice and a smaller sized pilot orifice (see Figure 60). Before proceeding, make sure the gas con- trol valve is in the “OFF” position, all elec ...
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Vanguard Managed Solutions MBDV41 - page 30
30 106497 DIRECT -VENT FIREPLACE ® FINAL PREPARATION 1. Replace logs and embers (see Remov- ing/Replacing Glass Door , page 22). 2 . Reinstall glass door and upper louver panel on fireplace (see Installing Logs, Lava Roc k and Glowing Embers , page 24). The conversion is now complete. Refer to the section on Checking Gas Con- nections (pages 20 an ...
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Vanguard Managed Solutions MBDV41 - page 31
31 106497 OWNER’S MANUAL TROUBLESHOOTING Note: All troubleshooting items are listed in order of operation. WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater. CAUTION: Never use a wire, needle, or similar object to clean pilot. This can damage pilot unit. POSSIBLE CAUSE 1. Igni ...
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Vanguard Managed Solutions MBDV41 - page 32
32 106497 DIRECT -VENT FIREPLACE ® OBSERVED PROBLEM Pilot will not light No gas to burner, although wall switch and valve are set to the ON position Frequent pilot outage Burner goes off after a short time Burner does not light after pilot is lit POSSIBLE CAUSE 1. No gas supply , or shutoff valve is OFF 2. Air in gas line 3. Construction debris cl ...
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Vanguard Managed Solutions MBDV41 - page 33
33 106497 OWNER’S MANUAL OBSERVED PROBLEM Delayed ignition burner Burner backfiring during combustion Slight smoke or odor during initial operation Fireplace produces a whistling noise when burner is lit Glass soots Fireplace produces a clicking/ticking noise just after burners are lit or shut off Remote does not function REMEDY 1. Contact local ...
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Vanguard Managed Solutions MBDV41 - page 34
34 106497 DIRECT -VENT FIREPLACE ® TROUBLESHOOTING Continued WARNING: If you smell gas • Shut off gas supply. • Do not try to light any appliance. • Do not touch any electrical switch; do not use any phone in your building. • Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. • If you ...
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Vanguard Managed Solutions MBDV41 - page 35
35 106497 OWNER’S MANUAL SER VICE HINTS When Gas Pressure Is Too Low • pilot will not stay lit • burners will have delayed ignition • fireplace will not produce specified heat • propane/LP gas supply might be low (propane/LP units only) When Gas Quality Is Bad • pilot will not stay lit • burners will produce flames and soot • firepl ...
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Vanguard Managed Solutions MBDV41 - page 36
36 106497 DIRECT -VENT FIREPLACE ® 34-3 1 2 3 4 6 7 7 8 9 10 11 (Included in Hardware P ac k) 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 28 29 30 31 32 33 42 34-2 34-4 34-1 34-5 35 36 35 37 38 5 5 5 50 51 39 45 46 35 47 48 49 44 6 41 40 43 6 52 ILLUSTRA TED PA R T S BREAKDOWN MBDV37 MBDV41 ...
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Vanguard Managed Solutions MBDV41 - page 37
37 106497 OWNER’S MANUAL P ARTS LIST DIRECT-VENT FIREPLACE MBDV37 MBDV41 This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 31 of this manual. KEY NO. PART NUMBER DESCRIPTION QTY. 1 104547-02 Top Outer Casing-37" 1 104547-03 Top Outer Casing-41" ...
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Vanguard Managed Solutions MBDV41 - page 38
38 106497 DIRECT -VENT FIREPLACE ® ACCESSORIES Purchase these fireplace accessories from your local dealer. If they can not supply these accessories, call DESA International’s Sales Department at 1-800-432-2382. for information. You can also write to the ad- dress listed on the back page of this manual. BRASS PERIMETER TRIM KIT - D9037(37") ...
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Vanguard Managed Solutions MBDV41 - page 39
39 106497 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _____________________________ ...
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Vanguard Managed Solutions MBDV41 - page 40
LIMITED WARRANTY DIRECT-VENT FIREPLACE DESA International warrants this product to be free from defects in materials and components for four (4) years from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions. To make a claim under this warranty the ...
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