Desa CGN20TB 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 caus- ing property damage, personal injury, or loss of life. — Do not store or use gasoline or other flammable vapors an[...]

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. Some people are more affected by carbon monoxide than o[...]

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. 1430 Broadway New York, NY 10018 National Fire P[...]

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. D[...]

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. Space: Includes the room in which you will install heater plus any adjoining rooms with doorle[...]

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. When ventilating to an adjoining unconfined space, you must pro- vide two permanent openings: one within 12" of the ceiling and one withi[...]

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. INSTALLATION ITEMS Before installing heater, make sure you have the[...]

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. Remove front panel of heater (see Fig- ure 7). 2. Locate thermostat sensing bulb[...]

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. 1. Drill holes at marked locations using 9/64" drill bit. 2. Place mounting bracket on[...]

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. Typical Inlet Pipe Diameters 20,000 Btu/Hr Models 3/8" or greater 30,000 Btu/Hr Models 1/2" or greater Installation must include an equipment shutoff valve, union, and plugged 1/[...]

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. Bubbles forming show a leak. Correct all leaks at once. Pressure Testin[...]

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. 3. T urn control knob clockwise Clockwise to the OFF position. 4. W ait fi ve [...]

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. Figure 21 shows an incorrect burner flame pattern. The incorre[...]

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. This can damage ODS/ pilot unit. POSSIBLE CAUSE 1. Ignitor electrode positioned wr[...]

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. Clean burner (s[...]

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. Follow the gas supplier’s instructions. • I[...]

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.desatech.com. SER VICE PUBLICA TIONS You can purchase a [...]

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. You can also write to the address listed on the[...]

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. County Rd. 400 East Valpara[...]

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. 20,000 Btu/Hr 30,000 Btu/Hr DESCRIPTION QTY. 1 098304-01 0[...]

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[...]