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Vanguard Heating VMH3000TN - page 1
Save this manual for future reference. OWNER’S OPERA TION AND INST ALLA TION MANUAL VENT -FREE NA TURAL GAS MINI-HEAR TH ® HEA TER VMH3000TN 15,000 to 30,000 Btu/Hr with Thermostat WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. — Do n ...
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Vanguard Heating VMH3000TN - page 2
2 104431 NA TURAL GAS RESIDENTIAL HEA TERS ® LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code ANS Z223.1 , also known as NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National Fire Prote ...
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Vanguard Heating VMH3000TN - page 3
3 104431 OWNER’S MANUAL PRODUCT FEA TURES SAFETY DEVICE This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS/pilot is a required feature for vent-free room heaters. The ODS/pilot shuts off the heater if there is not enough fresh air. PIEZO IGNITION SYSTEM This heater has a piezo ignitor. This system requir ...
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Vanguard Heating VMH3000TN - page 4
4 104431 NA TURAL GAS RESIDENTIAL HEA TERS ® Truss-Head Screw Nut Front Panel Figure 5 - Attaching Brass Front Trim to Front Panel Brass Front Trim Figure 4 - Assembling Heater Side Brass Trim Top Brass Trim Slot Mitered Edge Slot Set Screws Adjusting Plate Screws Assembled Brass Trim Shim Assembling and Attaching Brass Trim 1. Remove packaging fr ...
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Vanguard Heating VMH3000TN - page 5
5 104431 OWNER’S MANUAL Today’s homes are built more energy effi- cient than ever. New materials, increased insulation, and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in. During heating months, home owners want their homes as air ...
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Vanguard Heating VMH3000TN - page 6
6 104431 NA TURAL GAS RESIDENTIAL HEA TERS ® DETERMINING FRESH-AIR FLOW FOR HEATER 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 heater plus any adjoining rooms with doorless passageways or ventilation gr ...
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Vanguard Heating VMH3000TN - page 7
7 104431 OWNER’S MANUAL VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must pro- vide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two spaces (see ...
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Vanguard Heating VMH3000TN - page 8
8 104431 NA TURAL GAS RESIDENTIAL HEA TERS ® 36" 5" FLOOR CEILING Minimum Minimum To Top Surface Of Carpeting, Tile Or Other Combustible Material 6" Minimum From Sides Of Heater Left Side Right Side Figure 10 - Mounting Clearances As Viewed From Front of Heater CAUTION: If you install the heater in a home garage • heater pilot and ...
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Vanguard Heating VMH3000TN - page 9
9 104431 OWNER’S MANUAL Thermostat Sensing Bulb Clamp THERMOSTAT SENSING BULB The thermostat sensing bulb has been placed inside the heater for protection during shipping. Locating Thermostat Sensing Bulb 1. Remove front panel of heater (see Fig- ure 2, page 3). 2. Locate thermostat sensing bulb just under burner assembly . IMPORTANT: Attach ther ...
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Vanguard Heating VMH3000TN - page 10
10 104431 NA TURAL GAS RESIDENTIAL HEA TERS ® INST ALLA TION Continued Figure 14 - Folding Anchor Figure 15 - Popping Open Anchor Wings For Thin Walls Figure 16 - Mounting Heater Onto Mount- ing Bracket Horizontal Slots Mounting Bracket (attached to wall) Stand-Out Tab Installing Bottom Mounting Screws 1. Locate two bottom mounting holes. These ho ...
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Vanguard Heating VMH3000TN - page 11
11 104431 OWNER’S MANUAL INST ALLA TION Continued Continued Figure 18 - Attaching Heater to Hearth Base Figure 19- Placing Hearth Insert on Heater Base and Attaching Brass Base Trim Mounting Heater to Optional Hearth Base 1. Lay heater on its back on a table with the bottom of heater overhanging the edge of the table. 2. Remove 2 shipping screws ...
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Vanguard Heating VMH3000TN - page 12
12 104431 NA TURAL GAS RESIDENTIAL HEA TERS ® INST ALLA TION Continued C. MOUNTING HEATER TO OPTIONAL MANTEL See Instructions Included With Mantel Kit. Assembling Mantel IMPORTANT: Only use the optional man- tels specified in this manual. See Accesso- ries, pa ge 23 for proper mantel kits. This heater is only approved for use with models GMF800/GM ...
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Vanguard Heating VMH3000TN - page 13
13 104431 OWNER’S MANUAL Pressure Testing Gas Supply Piping System Test Pressures In Excess Of 1/2 PSIG (3.5 kPa) 1. Disconnect appliance with its appliance main gas valve (control valve) and equip- ment shutoff valve from gas supply pip- ing system. Pressures in excess of 1/2 psig will damage heater regulator . 2. Cap of f open end of gas pipe w ...
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Vanguard Heating VMH3000TN - page 14
14 104431 NA TURAL GAS RESIDENTIAL HEA TERS ® OPERA TING HEA TER TO TURN OFF GAS TO APPLIANCE Pilot Burner Thermocouple Figure 24 - Pilot 7. Keep contr ol knob pressed in f or 30 seconds after lighting pilot. After 30 seconds, release contr ol knob . • If contr ol knob does not pop up when released, contact a qualif ied service person or gas sup ...
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Vanguard Heating VMH3000TN - page 15
15 104431 OWNER’S MANUAL OPERA TING HEA TER Continued THERMOSTAT CONTROL OPERATION The thermostatic control used on this heater differs from standard thermostats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. The thermostat adjusts the amount of gas flow to the burner. This ...
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Vanguard Heating VMH3000TN - page 16
16 104431 NA TURAL GAS RESIDENTIAL HEA TERS ® TROUBLESHOOTING WARNING: Turn off and un- plug heater and let cool before servicing. Only a qualified ser- vice person should service and repair heater. REMEDY 1. Replace ignitor 2. Replace ignitor 3. Reconnect ignitor cable 4. Free ignitor cable if pinched by any metal or tubing. Keep ignitor cable dr ...
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Vanguard Heating VMH3000TN - page 17
17 104431 OWNER’S MANUAL REMEDY 1. Clean burner (see Cleaning and Mainte- nance , page 19) or replace burner orifice 2. Replace burner orifice 3. Contact local natural gas company 1. Contact local natural gas company 2. Clean burner (see Cleaning and Mainte- nance , page 19) or replace burner orifice 1. Clean burner (see Cleaning and Mainte- nanc ...
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Vanguard Heating VMH3000TN - page 18
18 104431 NA TURAL GAS RESIDENTIAL HEA TERS ® 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. ...
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Vanguard Heating VMH3000TN - page 19
19 104431 OWNER’S MANUAL CLEANING AND MAINTENANCE 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. W ipe the cabi- net to remove dust. CAUTION: You must keep control areas, burner, and circu- lating air passageways of heater clean. Inspect thes ...
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Vanguard Heating VMH3000TN - page 20
20 104431 NA TURAL GAS RESIDENTIAL HEA TERS ® 12-1 12-2 ILLUSTRA TED PA R T S BREAKDOWN VMH3000TN 1 2 9 10 10 11 12 13 14 15 17 19 20 23 24 25 8 6 6 21 7 1 3 5 16 18 4 22 26 1 ...
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Vanguard Heating VMH3000TN - page 21
21 104431 OWNER’S MANUAL P ARTS LIST VMH3000TN This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 19 of this manual. KEY VMH3000TN NO. PART NO. DESCRIPTION QTY. 1 098304-01 Screw, #10 x 3/8" 6 2 100566-01CK Front Panel 1 3 100573-01BR Screen Assembly 1 ...
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Vanguard Heating VMH3000TN - page 22
22 104431 NA TURAL GAS RESIDENTIAL HEA TERS ® TECHNICAL SER VICE You may have further questions about in- stallation, operation, or Trouble Shooting. If so, contact DESA International’s Techni- cal Service Department at 1-800-323-5190. You can also visit DESA International’s technical service web site at www.desatech.com. SPECIFICA TIONS Btu ( ...
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Vanguard Heating VMH3000TN - page 23
23 104431 OWNER’S MANUAL PREMIER MANTEL Unfinished - GM903U Series Finished - GM902F Series White Lacquer Finish - GM904W (differs slightly from illustration) For use with heater. Features a built-in base. Sturdy hardwood construction with classic styling and attractive molding. Available in a walnut finish or an unfinished hardwood, ready to sta ...
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Vanguard Heating VMH3000TN - page 24
KEEP THIS WARRANTY W ARRANTY INFORMA TION Model ________________________________ Serial No. _____________________________ Date Purchased ________________________ Always specify model and serial numbers when communicating with the factory. We reserve the right to amend these specifications at any time without notice. The only warranty applicable is ...
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