Instruction/ maintenance manual of the product CGN20TA Desa Tech
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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.
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.
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.
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.
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.
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 Adjo.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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.
22 104190 Blue Flame V ent-Fr ee Natural Gas Heater CGN20T A NOTES _______________________________________________________________________________________________ _____________________________________.
23 104190 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________.
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.
An important point after buying a device Desa Tech CGN20TA (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Desa Tech CGN20TA yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Desa Tech CGN20TA - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa Tech CGN20TA you will learn all the available features of the product, as well as information on its operation. The information that you get Desa Tech CGN20TA will certainly help you make a decision on the purchase.
If you already are a holder of Desa Tech CGN20TA, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Desa Tech CGN20TA.
However, one of the most important roles played by the user manual is to help in solving problems with Desa Tech CGN20TA. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa Tech CGN20TA along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
