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Desa VN10TA - page 1
Save this manual for future reference. ® VN10T A INFRARED VENT -FREE NA TURAL GAS HEA TER OWNER’S OPERA TION AND INST ALLA TION MANUAL WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal in- jury, or loss of life. — Do not store or use gasoline or other flammable ...
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Desa VN10TA - page 2
2 104086 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 include pregnan ...
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Desa VN10TA - page 3
3 104086 OWNER’S MANUAL 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 Protection Association, Inc. ...
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Desa VN10TA - page 4
4 104086 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 is not less ...
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Desa VN10TA - page 5
5 104086 OWNER’S MANUAL AIR FOR COMBUSTION AND VENTILA TION Continued 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 pas ...
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Desa VN10TA - page 6
6 104086 NA TURAL GAS HEA TER ® VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoin- ing unconfined space. When ventilating to an adjoining unconfined space, you must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two space ...
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Desa VN10TA - page 7
7 104086 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 Mounting Screw Locations 10 7 / 8 " Minimum To Maintain 8" Clearance From Wall 7 3 / 4 " 20 1 / 4 " Minimum To Ma ...
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Desa VN10TA - page 8
8 104086 NA TURAL GAS HEA TER ® Figure 9 - Location Of Keyhole Slots On Back Panel Of Heater Removing Front Panel Of Heater 1. Remove two screws near bottom cor- ners of front panel. 2. Lift straight up on grill guard until it stops. Grill guard will slide up about 1/4". 3. Pull bottom of front panel forward, then down. Installing Bottom Moun ...
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Desa VN10TA - page 9
9 104086 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 VN10TA - page 10
10 104086 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 liquid soap ...
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Desa VN10TA - page 11
11 104086 OWNER’S MANUAL 1. Remove fr ont panel (see Figure 10, page 8). 2. Follow steps 1 thr ough 5 under Light- ing Instructions . 3. With contr ol knob pr essed in, str ike match. Hold match to pilot until pi- lot lights. 4. Keep contr ol knob pressed in f or 10 seconds after pilot is lit. After 10 sec- onds, release contr ol knob. F ollow st ...
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Desa VN10TA - page 12
12 104086 NA TURAL GAS HEA TER ® Figure 19 - Correct Burner Flame Pattern Figure 20 - Incorrect Burner Flame Pattern CLEANING AND MAINTENANCE ODS/PILOT AND BURNER ORIFICE • Use a vacuum cleaner , pressurized air , or small, soft bristled brush to clean. CLEANING BURNER PILOT AIR INLET HOLE We recommend that you clean the unit every 2,500 hours o ...
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Desa VN10TA - page 13
13 104086 OWNER’S MANUAL TROUBLESHOOTING POSSIBLE CAUSE 1. Ignitor cable pinched or wet 2. Ignitor electrode not connected to ignitor cable 3. Piezo ignitor nut is loose 4. Broken ignitor cable 5. Ignitor electrode broken 6. Bad piezo ignitor 7. Ignitor electrode positioned wrong 1 . Gas supply turned off or equipment shutoff valve closed 2. Cont ...
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Desa VN10TA - page 14
14 104086 NA TURAL GAS HEA TER ® OBSERVED PROBLEM Burner plaques do not light after ODS/pilot is lit Delayed ignition of burner plaques Burner backfiring during combustion POSSIBLE CAUSE 1. Burner orifice(s) is clogged 2. Burner orifice(s) diameter is too small 3. Inlet gas pressure is too low 1. Manifold pressure is too low 2. Burner orifice(s) i ...
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Desa VN10TA - page 15
15 104086 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 VN10TA - page 16
16 104086 NA TURAL GAS HEA TER ® 12 A B 16 7 8 4 6 5 3 2 1 11 14 13 19 18 6 17 15 16 10 9 7-1 ODS/PILOT 7-2 ILLUSTRA TED P ARTS LIST VN10TA ...
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Desa VN10TA - page 17
17 104086 OWNER’S MANUAL P ARTS LIST VN10TA 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 098454-06CD Front Panel 1 3 099318-03 Grill Guard 1 4 101108-01 Rem ...
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Desa VN10TA - page 18
18 104086 NA TURAL GAS HEA TER ® ACCESSOR Y Purchase this heater accessory from your local dealer. If they cannot supply this ac- cessory, call DESA International’s Parts Department at 1-800-972-7879 for referral information. You can also write to the ad- dress listed on the back page of this manual. EQUIPMENT SHUTOFF VALVE - GA5010 Equipment sh ...
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Desa VN10TA - page 19
19 104086 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _____________________________ ...
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Desa VN10TA - page 20
2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 www.desatech.com 104086-01 Rev. D 03/00 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 our standard written warranty. We make no other warranty ...
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