Instruction/ maintenance manual of the product CGN20TB Desa
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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 caus- ing property damage, personal injury, or loss of life.
2 104331 BLUE FLAME NA TURAL GAS HEA TER SAFETY INFORMA TION 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.
3 104331 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 ANS Z223.1 , also known as NFPA 54*. *Available from: American National Standards Institute, Inc.
4 104331 BLUE FLAME NA TURAL GAS HEA TER 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 owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in.
5 104331 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 104331 BLUE FLAME NA TURAL GAS HEA TER FRESH AIR FOR COMBUSTION AND VENTILA TION Continued VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space.
7 104331 OWNER’S MANUAL INST ALLA TION WARNING: A qualified ser- vice person 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 104331 BLUE FLAME NA TURAL GAS HEA TER Figure 5 - Attaching Thermostat Sensing Bulb Clamp Thermostat Sensing Bulb THERMOSTAT SENSING BULB The thermostat sensing bulb has been placed inside the heater for protection during shipping. Locating Thermostat Sensing Bulb 1.
9 104331 OWNER’S MANUAL Attaching Mounting Bracket To Wall Note: Wall anchors, mounting screws, and spacers are in hardware package. The hard- ware package is provided with heater. Attaching to wall stud method For attaching mounting bracket to wall studs.
10 104331 BLUE FLAME NA TURAL GAS HEA TER CONNECTING TO GAS SUPPLY WARNING: A qualified service person must connect heater to gas supply. Follow all local codes.
11 104331 OWNER’S MANUAL INST ALLA TION Continued 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 104331 BLUE FLAME NA TURAL GAS HEA TER PILOT LO OFF HI IGNITOR Ignitor Button Control Knob Figure 16 - Control Knob In The OFF Position LIGHTING INSTRUCTIONS 1. STOP! Read the safety inf ormation, column 3, page 11. 2. Make sur e equipment shutoff valve is fully open.
13 104331 OWNER’S MANUAL WARNING: If yellow tipping occurs, your heater could pro- duce increased levels of carbon monoxide. If burner flame pattern shows yellow tipping, follow in- structions at bottom of this page. BURNER FLAME PATTERN Figure 20 shows a correct burner flame pattern.
14 104331 BLUE FLAME NA TURAL GAS HEA TER TROUBLESHOOTING 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/pilot.
15 104331 OWNER’S MANUAL Continued 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 operation Heater produces a whistling noise when burner is lit REMEDY 1.
16 104331 BLUE FLAME NA TURAL GAS HEA TER 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.
17 104331 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. You can also visit DESA International’s technical service web site at www.
18 104331 BLUE FLAME NA TURAL GAS HEA TER ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supply these accessories, either contact your nearest Parts Central (see page 19) or call DESA International’s Parts Department at 1-800- 972-7879 for referral information.
19 104331 OWNER’S MANUAL 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 06514-0322 1-800-397-7553 203-248-7553 Parts Department Portable Heater Parts 342 N.
20 104331 BLUE FLAME NA TURAL GAS HEA TER 1 2 3 4 5 6 7 8 9 10 10 11 12 13 14 16 18 19 20 21 22 15 23 24 17 7 11-1 11-2 ILLUSTRA TED PA R T S BREAKDOWN CGN20TB CGN20TLB CGN30TB CGN30TLB.
21 104331 OWNER’S MANUAL P ARTS LIST CGN20TB CGN20TLB CGN30TB CGN30TLB 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. PART NUMBER FOR KEY CGN20TB/CGN20TLB CGN30TB/CGN30TLB NO.
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 CGN20TB (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 CGN20TB 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 CGN20TB - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa CGN20TB you will learn all the available features of the product, as well as information on its operation. The information that you get Desa CGN20TB will certainly help you make a decision on the purchase.
If you already are a holder of Desa CGN20TB, 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 CGN20TB.
However, one of the most important roles played by the user manual is to help in solving problems with Desa CGN20TB. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa CGN20TB 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
