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Vanguard Heating VMH26TN - page 1
Save this manual for future reference. OWNER’S OPERA TION AND INST ALLA TION MANUAL VENT -FREE NA TURAL GAS COMP ACT CLASSIC HEARTH FIREPLACE ® Shown with Optional Cabinet Mantel/Hearth Base Accessory ® 14,000 to 26,000 Btu/Hr with Thermostat VMH26TN This appliance may be installed in an aftermarket* manufactured (mobile) home, where not pr ...
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Vanguard Heating VMH26TN - page 2
2 102885 CONTENTS SECTION PAGE Safety Information continues on next page Safety Information ................................................................................... 2 Product Identification .............................................................................. 4 Local Codes ........................................................ ...
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Vanguard Heating VMH26TN - page 3
3 102885 SAFETY INFORMA TION Continued WARNING ICON G001 W ARNINGS Continued WARNING: Any change to this fireplace or its controls can be dangerous. 1. 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. 2. If you smell gas • shut off gas supply • do not ...
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Vanguard Heating VMH26TN - page 4
4 102885 PRODUCT IDENTIFICA TION LOCAL CODES Install and use fireplace with care. Follow all local codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code ANSI Z223, also known as NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National Fire Protection Associ ...
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Vanguard Heating VMH26TN - page 5
5 102885 ASSEMBL Y ASSEMBLING FIREPLACE Tools Required: Phillips screwdriver, 5/16" hex wrench, and slotted screwdriver Installing Log 1. Remove back log, branch, and hood from log box. Discard protective packaging. 2. Remove two shipping screws above screen (see Figure 2). 3. Lift screen up and pull out to remove. 4. An optional blower is ava ...
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Vanguard Heating VMH26TN - page 6
6 102885 AIR FOR COMBUSTION AND VENTILA TION WARNING ICON G 001 W ARNING This heater shall not be installed in a confined space unless provisions are provided for adequate combustion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home. Today’s homes are built more ...
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Vanguard Heating VMH26TN - page 7
7 102885 AIR FOR COMBUSTION AND VENTILA TION Continued DETERMINING FRESH-AIR FLOW FOR FIREPLACE LOCATION Determining if You Have a Confined or Unconfined Space Use this worksheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install fireplace plus any adjoining rooms with doorless passageways or ...
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Vanguard Heating VMH26TN - page 8
8 102885 AIR FOR COMBUSTION AND VENTILA TION Continued Figure 4 - Ventilation Air from Inside Building Shown with Optional Mantel WARNING ICON G001 W ARNING If the area in which the heater may be operated is smaller than that defined as an unconfined space, provide adequate combus- tion and ventilation air by one of the methods described in the Nat ...
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Vanguard Heating VMH26TN - page 9
9 102885 AIR FOR COMBUSTION AND VENTILA TION Continued Figure 5 - Ventilation Air from Outdoors Shown with Optional Mantel Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor. Connect these items d ...
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Vanguard Heating VMH26TN - page 10
10 102885 INST ALLA TION NOTICE A qualified service person must install fireplace. Follow all local codes. You can recess firebox into the wall. You can also position fireplace in the optional cabinet or corner mantels. IMPORTANT: Only use optional cabinet or corner mantels specified in this manual. Purchase the optional mantel from your dealer (se ...
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Vanguard Heating VMH26TN - page 11
11 102885 Figure 7 - Mounting Clearances As Viewed From Front of Fireplace Shown with Optional Mantel WARNING ICON G 001 CAUTION If you install the fireplace in a home garage • fireplace pilot and burner must be at least 18 inches above floor. • locate fireplace where moving vehicle will not hit it. INST ALLA TION Continued For convenience and ...
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Vanguard Heating VMH26TN - page 12
12 102885 INST ALLING Continued 36 5/8" 25 7/8" 51 3/4" 26 7/8" Figure 9 - Rough Opening for Installing in Corner 2. An optional blower accessory is available (see Accessories , page 29). There are two options for connecting blower to electrical source. Option one: Have a licensed electrician install a properly grounded, three- ...
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Vanguard Heating VMH26TN - page 13
13 102885 INST ALLING Continued Continued 6. Attach flexible gas line to fireplace gas regulator. See Connecting Fireplace to Gas Supply, page 17. 7. If the optional blower has been installed connect blower to electrical source. Option one: Route blower electrical cord through side or rear access door of fireplace. Plug electrical cord into electri ...
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Vanguard Heating VMH26TN - page 14
14 102885 INST ALLING Continued Figure 12 - Attaching Brass Trim to Fireplace Shoulder Screws Assembled Brass Trim OPTIONAL MANTEL INSTALLATION Note: Refer to instructions provided with the mantel for assembly instructions. Refer to instructions below for system installation. Refer to instructions on page 5 for firebox assembly. Blower accessory sh ...
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Vanguard Heating VMH26TN - page 15
15 102885 Attaching Wood Base to Solid Floor For attaching base to solid floors (concrete or masonry) Note: Floor anchors and mounting screws are in hardware package. The hardware package is provided with fireplace. 1. Drill holes at marked locations using 5/16" drill bit. For solid floors (concrete or masonry), drill at least 1" deep. 2. ...
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Vanguard Heating VMH26TN - page 16
16 102885 CONNECTING T O GAS SUPPL Y NOTICE A qualified service person must connect fireplace to gas supply. Follow all local codes. IMPORTANT: Check gas line pressure before connecting fireplace to gas line. Gas line pressure must be no greater than 14 inches of water. If gas line pressure is higher, fireplace regulator damage could occur. Install ...
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Vanguard Heating VMH26TN - page 17
17 102885 CONNECTING T O GAS SUPPL Y Continued Continued Figure 17 - Removing Twig Support From Fireplace CONNECTING FIREPLACE TO GAS SUPPLY Installation Items Needed • Phillips screwdriver • sealant (resistant to propane gas, not provided) 1. Remove fireplace screen. Remove two screws that hold fireplace screen in place for shipping. These scr ...
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Vanguard Heating VMH26TN - page 18
18 102885 ON POSITION OFF POSITION PRESSURE TESTING GAS SUPPLY PIPING SYSTEM Test Pressures In Excess Of 1/2 PSIG 1. Disconnect fireplace and its individual manual shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig will damage fireplace regulator. 2. Cap off open end of gas pipe where manual shutoff valve was connected. 3. ...
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Vanguard Heating VMH26TN - page 19
19 102885 OPERA TING FIREPLACE FOR YOUR SAFETY READ BEFORE LIGHTING Continued WARNING ICON G 001 W ARNING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. LIGHTING INSTRUCTIONS 1. STOP! Read the safety information above. 2. Make sure manual shutoff valve is ful ...
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Vanguard Heating VMH26TN - page 20
20 102885 4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information at the top of page 19. If you don’t smell gas, go to the next step. 5. Turn control knob counterclockwise C-clockwise to the PILOT position. Press in control knob for five (5) seco ...
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Vanguard Heating VMH26TN - page 21
21 102885 T O TURN OFF GAS TO APPLIANCE Shutting Off Fireplace 1. Turn control knob clockwise Clockwise to the OFF position. 2. Turn off all electric power to the appliance if service is to be performed. Shutting Off Burner Only (pilot stays lit) 1. Turn control knob clockwise Clockwise to the PILOT position. THERMOST A T CONTROL OPERA TION The the ...
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Vanguard Heating VMH26TN - page 22
22 102885 INSPECTING BURNER Thermocouple Pilot Burner Figure 23 - Correct Pilot Flame Pattern Thermocouple Pilot Burner Figure 24 - Incorrect Pilot Flame Pattern Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 23 shows a correct pilot flame pattern. Figure 24 shows an incorrect pilot flame pattern. The incorrect ...
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Vanguard Heating VMH26TN - page 23
23 102885 BURNER FLAME PATTERN Figure 25 shows a correct burner flame pattern. Figure 26 shows an incorrect burner flame pattern. The incorrect burner flame pattern shows yellow tipping of the flame. It also shows the flame higher than one inch above the log. Note: When using the fireplace the first time, the flame will be yellow for approxi- matel ...
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Vanguard Heating VMH26TN - page 24
24 102885 CLEANING AND MAINTENANCE ODS/PILOT AND BURNER • Use a vacuum cleaner, pressurized air, or small, soft bristled brush to clean. CABINET Air Passageways • Use a vacuum cleaner or pressurized air to clean. Exterior • Use a soft cloth dampened with a mild soap and water mixture. Wipe the cabinet to remove dust. TROUBLE- SHOOTING Note: A ...
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Vanguard Heating VMH26TN - page 25
25 102885 Continued TROUBLE- SHOOTING Continued REMEDY 1. Turn on gas supply or open manual shutoff valve 2. Turn control knob to PILOT position 3. Press in control knob while in PILOT position 4. Continue holding down control knob. Repeat igniting opera- tion until air is re- moved 5. Clean ODS/pilot (see Cleaning and Mainte- nance, page 24) or re ...
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Vanguard Heating VMH26TN - page 26
26 102885 OBSERVED PROBLEM Burner does not light after ODS/pilot is lit Delayed ignition of burner Burner backfiring during combustion Yellow flame during burner combustion Slight smoke or odor during initial operation Fireplace produces a whistling noise when burner is lit REMEDY 1. Clean burner (see Cleaning and Mainte- nance , page 24) or replac ...
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Vanguard Heating VMH26TN - page 27
27 102885 TROUBLE- SHOOTING Continued WARNING ICON G 001 W ARNING 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 canno ...
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Vanguard Heating VMH26TN - page 28
28 102885 TECHNICAL SER VICE You may have further questions about installation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-800-323-5190. SPECIFICA TIONS REPLACEMENT P ARTS Btu (Variable) 14,000/26,000 Type Gas Natural Only Ignition Piezo Pressure Regulator Setting 3" W.C. Inlet Gas Pr ...
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Vanguard Heating VMH26TN - page 29
29 102885 ACCESSORIES Purchase these fireplace accessories from your local dealer. If they cannot supply these accessories call DESA International’s Sales Department at 1-800-458-2472 for referral information. You can also write to the address listed on the back page of this manual. CABINET MANTEL WITH BUILT-IN HEARTH BASE Unfinished - GM921U Fin ...
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Vanguard Heating VMH26TN - page 30
30 102885 12-1 12-2 23 29 32 36 37 13 7 33 11 8 10 17 17 8 7 30 3 1 2 9 19 6 22 31 21 40 27 38 39 16 15 18 24 28 5 34 26 25 20 35-1 35-2 12 24 12-1 25 14 4 VMH26TN ...
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Vanguard Heating VMH26TN - page 31
31 102885 P ARTS LIST This list contains replaceable parts used in your fireplace. When ordering parts, follow the instructions listed under Replacement Parts on page 28 of this manual. KEY VMH26TN NO. PART NO. DESCRIPTION QTY. 1 102633-01 Outer Casing Top 1 2 102624-02 Outer Casing 1 3 099230-02 Shoulder Screw 4 4 098304-01 Screw, #10 x 3/8" ...
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Vanguard Heating VMH26TN - page 32
2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 102885-01 REV. D 06/97 LIMITED WARRANTY VENT-FREE NATURAL GAS COMPACT CLASSIC HEARTH FIREPLACE DESA International warrants this product to be free from defects in materials and components for three (3) years and five (5) years on stainless steel burners from the date of first pur ...
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