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Desa Tech CGN20TA manual

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Table of contents for the manual

  • Page 1

    1 104190 OWNER’S MANUAL Save this manual for future reference. BLUE FLAME 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 injury, or loss of life. — Do not store or use gasoline or o[...]

  • Page 2

    2 104190 Blue Flame V ent-Fr ee Natural Gas Heater CGN20T A SAFETY INFORMA TION WARNING ICON G 001 WARNINGS IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, oper- ate, or service this heater. Im- proper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and ca[...]

  • Page 3

    3 104190 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 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 Pr[...]

  • Page 4

    4 104190 Blue Flame V ent-Fr ee Natural Gas Heater CGN20T A FRESH AIR FOR COMBUSTION AND VENTILA TION 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 own- ers weather strip and caulk around windows and doors to keep the cold air out a[...]

  • Page 5

    5 104190 OWNER’S MANUAL FRESH 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 doorle[...]

  • Page 6

    6 104190 Blue Flame V ent-Fr ee Natural Gas Heater CGN20T A Or Remove Door into Adjoining Room, Option 3 Ventilation Grills Into Adjoining Room, Option 2 12" 12" Ventilation Grills into Adjoining Room, Option 1 Figure 3 - Ventilation Air from Outdoors FRESH AIR FOR COMBUSTION AND VENTILA TION Continued WARNING: If the area in which the he[...]

  • Page 7

    7 104190 OWNER’S MANUAL INST ALLA TION NOTICE: A qualified service per- son must install heater. Follow all local codes. CHECK GAS TYPE Use only natural gas. If your gas supply is not natural gas, do not install heater. Call dealer where you bought heater for proper type heater. INSTALLATION ITEMS Before installing heater, make sure you have the [...]

  • Page 8

    8 104190 Blue Flame V ent-Fr ee Natural Gas Heater CGN20T A 16" 18 3/4" Min. 7 1/4" Min. Adjoining Wall Only Insert Mounting Screws Through Last Hole On Each End Floor Marking Screw Locations 1. T ape mounting brack et to wall where heater will be located. Make sure mounting bracket is level. Figure 8 - Mounting Bracket Clearances WA[...]

  • Page 9

    9 104190 OWNER’S MANUAL INST ALLA TION Continued Figure 9 - Folding Anchor 3. Insert wall anchor (wings first) into hole. T ap anchor flush to wall. 4. For thin walls (1/2" or less), insert red key into w all anchor. Push r ed key to “pop” open anchor wings. IMPORT ANT : Do not hammer k ey! For thick walls (over 1/2" thick) or solid[...]

  • Page 10

    10 104190 Blue Flame V ent-Fr ee Natural Gas Heater CGN20T A IMPORTANT: Hold pressure regulator with wrench when connecting it to gas pip- ing and/or fittings. Pressure Regulator Tee Joint Reducer Bushing to 1/8" NPT 1/8" NPT Plug Tap Test Gauge Connection* Tee Joint Pipe Nipple Cap 3/8" NPT Pipe Nipple Figure 13 - Gas Connection * A[...]

  • Page 11

    11 104190 OWNER’S MANUAL WARNING: Test all gas pip- ing and connections for leaks after installation or servicing. Correct 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. PRESSURE TESTING GAS SUPPLY PIPING SYSTE[...]

  • Page 12

    12 104190 Blue Flame V ent-Fr ee Natural Gas Heater CGN20T A TO TURN OFF GAS TO APPLIANCE CAUTION: Do not try to adjust heating levels by using the manual shutoff valve. Thermocouple Ignitor Electrode Figure 17 - Pilot Pilot Burner OPERA TING HEA TER FOR YOUR SAFETY READ BEFORE LIGHTING A. This appliance has a pilot which must be lighted by hand. W[...]

  • Page 13

    13 104190 OWNER’S MANUAL OPERA TING HEA TER Continued THERMOSTAT CONTROL OPERATION The thermostatic control used on these models differs from standard thermo- stats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room tem- perature. The thermostat adjusts the amount of gas flow to the burner.[...]

  • Page 14

    14 104190 Blue Flame V ent-Fr ee Natural Gas Heater CGN20T A TROUBLESHOOTING Note: All troubleshooting items are listed in order of operation. WARNING: Turn off and un- plug heater and let cool before servicing. Only a qualified ser- vice person should service and repair heater. CAUTION: Never use a wire, needle, or similar object to clean ODS/pilo[...]

  • Page 15

    15 104190 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 REMEDY 1. Clean burner (see Clean[...]

  • Page 16

    16 104190 Blue Flame V ent-Fr ee Natural Gas Heater CGN20T A 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 ?[...]

  • Page 17

    17 104190 OWNER’S MANUAL TECHNICAL SER VICE 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. CGN20TA Btu (Variable) 10,000/20,000 Type Gas Natural Only Ignition Piezo Pressure Regulator Setting 3" W.C. Inlet Gas Pressure ([...]

  • Page 18

    18 104190 Blue Flame V ent-Fr ee Natural Gas Heater CGN20T A 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 N[...]

  • Page 19

    19 104190 OWNER’S MANUAL ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supply these accessories, either contact your nearest Parts Central (see page 18) or call DESA International’s Parts Department at 1-800- 972-7879 for referral information. You can also write to the address listed on the back page of t[...]

  • Page 20

    20 104190 Blue Flame V ent-Fr ee Natural Gas Heater CGN20T A ILLUSTRA TED PAR TS BREAKDOWN CGN20TA 12 ODS/Pilot Assembly 12-1 12-2 1 2 3 4 5 6 7 8 9 10 10 11 12 13 14 15 17 19 20 21 22 23 24 26 25 18 16[...]

  • Page 21

    21 104190 OWNER’S MANUAL P ARTS LIST CGN20TA This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 17 of this manual. KEY PART NO. NUMBER DESCRIPTION QTY. 1 098304-01 Screw, #10 x 3/8" 2 2 098742-03 Front Panel for CGN20TA (Champagne) 1 3 103476-01 Grill [...]

  • Page 22

    22 104190 Blue Flame V ent-Fr ee Natural Gas Heater CGN20T A NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ ___________________________________________________________________________________________[...]

  • Page 23

    23 104190 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _____________________________[...]

  • Page 24

    LIMITED WARRANTY COMFORT GLOW VENT-FREE NATURAL GAS HEATERS DESA International warrants this product to be free from defects in materials and components for two (2) 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 make a claim und[...]