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Desa CGN10A - page 1
Save this manual for future reference. BLUE FLAME VENT-FREE NATURAL GAS HEATER OWNER’S OPERATION AND INSTALLATION MANUAL MODELS: CGN10A AND CGN6 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 fla ...
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Desa CGN10A - page 2
2 101870 NA TURAL GAS HEA TER CGN10A AND CGN6 Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning re- semble 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 ...
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Desa CGN10A - page 3
3 101870 OWNER’S MANUAL PRODUCT IDENTIFICA TION Control Knob 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 ANSI Z223.1, also known as NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 Na ...
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Desa CGN10A - page 4
4 101870 NA TURAL GAS HEA TER CGN10A AND CGN6 WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space, provide ad- equate combustion and ventila- tion air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1, 1992, Section 5.3 or applicable local codes. FRESH AIR FOR COMBUST ...
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Desa CGN10A - page 5
5 101870 OWNER’S MANUAL FRESH AIR FOR COMBUSTION AND VENTILA TION Continued Or Remove Door into Adjoining Room, Option 3 Ventilation Grills Into Adjoining Room, Option 2 12" 12" Ventilation Grills into Adjoining Room, Option 1 WARNING: Rework work- sheet, adding the space of the adjoining unconfined space. The combined spaces must have ...
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Desa CGN10A - page 6
6 101870 NA TURAL GAS HEA TER CGN10A AND CGN6 Continued 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 8 7/8" Minimum To Maintain 6" Clearance From Wall 7 3/4" 20 1/4 ...
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Desa CGN10A - page 7
7 101870 OWNER’S MANUAL ANCHOR Installing Two Mounting Screws Note: Wall anchors and mounting screws are in hardware package. The hardware pack- age is provided with heater. Attaching to wall stud method For attaching mounting screw to wall stud 1. Drill hole at marked location using 9/64" drill bit. 2. Insert mounting screw into wall stud. ...
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Desa CGN10A - page 8
8 101870 NA TURAL GAS HEA TER CGN10A AND CGN6 IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping and/ or fittings. * An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional A.G.A. design-certified manual shutoff valve from your d ...
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Desa CGN10A - page 9
9 101870 OWNER’S MANUAL Gas Meter CHECKING GAS CONNECTIONS WARNING: Test all gas pip- ing and connections for leaks after installing or servicing. Cor- rect all leaks at once. WARNING: Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once. PRESSU ...
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Desa CGN10A - page 10
10 101870 NA TURAL GAS HEA TER CGN10A AND CGN6 TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1. T ur n control knob clockwise to the PILO T position. 2. Press in contr ol knob and turn clock- wise to the OFF position. Shutting Off Burner Only (pilot stays lit) 1. T ur n control knob clockwise to the PILO T position. 4. W ait f ive (5) minutes to ...
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Desa CGN10A - page 11
11 101870 OWNER’S MANUAL Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 17 shows a correct pilot flame pat- tern. Figure 18 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will ...
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Desa CGN10A - page 12
12 101870 NA TURAL GAS HEA TER CGN10A AND CGN6 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 ODS/pilot. This can damage ODS/ pilot ...
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Desa CGN10A - page 13
13 101870 OWNER’S MANUAL TROUBLESHOOTING Continued 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 opera- tion Heater produces a whistling noise when burner is lit POSSIBLE CAUSE 1. Burner orifice ...
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Desa CGN10A - page 14
14 101870 NA TURAL GAS HEA TER CGN10A AND CGN6 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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Desa CGN10A - page 15
15 101870 OWNER’S MANUAL TECHNICAL SER VICE You may have further questions about in- stallation, operation, or troubleshooting. If so, contact DESA International’s Techni- cal Service Department at 1-800-323-5190. CGN6 CGN10A Btu (Variable) 4,400/6,000 5,000/10,000 Type Gas Natural Only Natural Only Ignition Piezo Piezo Pressure Regulator Setti ...
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Desa CGN10A - page 16
16 101870 NA TURAL GAS HEA TER CGN10A AND CGN6 12-2 12-1 ODS/PILOT HEATER EXPLODED VIEW 10 12 11 1 2 3 4 5 6 7 9 8 10 13 14 15 16 17 18 21 23 24 27 22 26 25 19 20 28 29 ILLUSTRA TED P AR TS LIST ...
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Desa CGN10A - page 17
17 101870 OWNER’S MANUAL P AR TS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 15 of this manual. PART NUMBER FOR CGN6 CGN10A KEY NO. DESCRIPTION QTY. 1 098304-01 098304-01 Screw, #10 x 3/8" 2 2 099467-02 099467-02 Front Panel Assembly 1 3 09 ...
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Desa CGN10A - page 18
18 101870 NA TURAL GAS HEA TER CGN10A AND CGN6 P ARTS CENTRALS These Parts Centrals are privately owned businesses. They have agreed to support our customer’s needs by providing original replacement parts and accessories. Baltimore Electric 1348 Dixwell Avenue Hamden, CT 06514 1-800-397-7553 203-248-7553 Parts Department Portable Heater Parts 342 ...
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Desa CGN10A - page 19
19 101870 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _____________________________ ...
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Desa CGN10A - page 20
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 our standard written warranty. We make no other warranty, expressed or implied. LIMITED WARRANTY COMFORT GLOW VENT-FREE RESIDENTIA ...
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