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Desa VN6D - page 1
Save this manual for future reference. INFRARED VENT -FREE NA TURAL GAS HEA TER OWNER’S OPERA TION AND INST ALLA TION MANUAL ® VN6D VN10A 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 not store or use gasoline or other flammable ...
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Desa VN6D - page 2
2 104274 VENT -FREE NA TURAL GAS HEA TER ® Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, or nausea. If you have these signs, the heater may not be working properly. Get fresh air at once! Have heater serviced. Some people are more affected by carbon monoxide than others. These incl ...
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Desa VN6D - page 3
3 104274 OWNER’S MANUAL PRODUCT IDENTIFICA TION LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of 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 Protec ...
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Desa VN6D - page 4
4 104274 VENT -FREE NA TURAL GAS HEA TER ® Confined and Unconfined Space The National Fuel Gas Code ANS Z223.1 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggre- gate input rating of all appliances installed in that space and an unconfined space as a space whose volume i ...
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Desa VN6D - page 5
5 104274 OWNER’S MANUAL WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANS Z223.1, Section 5.3, or applicable local code ...
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Desa VN6D - page 6
6 104274 VENT -FREE NA TURAL GAS HEA TER ® Figure 3 - Ventilation Air from Outdoors Outlet Air Ventilated Attic Outlet Air Inlet Air Inlet Air Ventilated Crawl Space To Crawl Space To Attic Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts. You must provide two per- manent openings: one within 12" of t ...
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Desa VN6D - page 7
7 104274 OWNER’S MANUAL 2. Mark two mounting screw locations on wall (see Figure 5). INSTALLING HEATER TO WALL Marking Screw Locations 1. Determine where you will locate heater . Figure 5 - Mounting Screw Locations WARNING: Maintain minimum clearances shown in Figure 5. If you can, provide greater clear- ances from floor and joining wall. For con ...
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Desa VN6D - page 8
8 104274 VENT -FREE NA TURAL GAS HEA TER ® Placing Heater On Mounting Screws 1. Locate two keyhole slots on back panel of heater (see Figure 9). 2 . Place large openings of slots over screwheads. Slide heater down until screws are in small portion of slots. Figure 11 - Installing Bottom Mounting Screw Figure 9 - Location Of Keyhole Slots On Back P ...
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Desa VN6D - page 9
9 104274 OWNER’S MANUAL Figure 12 - Gas Connection * A CSA/AGA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA/AGA design-certified equipment shutoff valve from your dealer. See Accessory , page 18. Tee Joint Reducer Bushing to 1/8" NPT 1/8" ...
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Desa VN6D - page 10
10 104274 VENT -FREE NA TURAL GAS HEA TER ® Pressure Testing Heater Gas Connections 1. Open equipment shutoff valve (see Fig- ure 13). 2. Open main gas valve located on or near gas meter . 3. Make sure control knob of heater is in the OFF position. 4. Check all joints from equipment shutoff valve to control valve (see Figure 14). Apply mixture of ...
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Desa VN6D - page 11
11 104274 OWNER’S MANUAL TO SELECT HEATING LEVEL 1. Slightly press in contr ol knob and turn counter c lockwise to the LO W or HIGH positions (VN10A) or ON position (VN6D). IMPOR T ANT : Release downward pressur e while turning control knob . Control knob will lock at the desir ed position. Figure 17 - Burner Patterns WARNING: When running heater ...
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Desa VN6D - page 12
12 104274 VENT -FREE NA TURAL GAS HEA TER ® Figure 20 - Correct Burner Flame Pattern (Model VN10A Shown) Figure 21 - Incorrect Burner Flame Pattern (Model VN10A Shown) CLEANING AND MAINTENANCE ODS/PILOT AND BURNER ORIFICE • Use a vacuum cleaner , pressurized air , or small, soft bristled brush to clean. WARNING: Turn off heater and let cool befo ...
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Desa VN6D - page 13
13 104274 OWNER’S MANUAL POSSIBLE CAUSE 1. Ignitor electrode positioned wrong 2. Ignitor electrode broken 3. Ignitor electrode not connected to igni- tor cable 4. Ignitor cable pinched or wet 5. Piezo ignitor nut is loose 6. Broken ignitor cable 7. Bad piezo ignitor 1 . Gas supply turned off or equipment shutoff valve closed 2. Control knob not i ...
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Desa VN6D - page 14
14 104274 VENT -FREE NA TURAL GAS HEA TER ® TROUBLESHOOTING Continued OBSERVED PROBLEM Burner(s) does not light after ODS/pilot is lit Delayed ignition of burner(s) Burner backfiring during combustion Burner plaque(s) does not glow Slight smoke or odor during initial operation Heater produces a clicking/ticking noise just after burner is lit or sh ...
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Desa VN6D - page 15
15 104274 OWNER’S MANUAL 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 cannot reach your gas supplier, cal ...
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Desa VN6D - page 16
16 104274 VENT -FREE NA TURAL GAS HEA TER ® ILLUSTRA TED PA R T S BREAKDOWN VN6D This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 18 of this manual. 7-1 7-2 ODS/PILOT KEY PART NO. NUMBER DESCRIPTION QTY. 1 098304-01 Screw, #10 x 3/8" 2 2 099467-03 Fro ...
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Desa VN6D - page 17
17 104274 OWNER’S MANUAL 19 18 17 16 15 14 13 10 12 9 9 11 20 7 8 6 6 5 4 3 2 1 A B 21 22 23 23 P ARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 18 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 098304-01 Screw, #10 x 3/8" 2 2 099 ...
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Desa VN6D - page 18
18 104274 VENT -FREE NA TURAL GAS HEA TER ® You may have further questions about in- stallation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-800-323-5190. You can also visit DESA International’s technical service web site at www.desatech.com. TECHNICAL SER VICE SPECIFICA TIONS VN10A VN6D ...
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Desa VN6D - page 19
19 104274 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _____________________________ ...
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Desa VN6D - page 20
INTERNA TIONAL LIMITED WARRANTY VANGUARD VENT-FREE RESIDENTIAL GAS HEATERS 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 ...
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