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Desa Tech CBN20 - page 1
UNVENTED (VENT -FREE) BLUE FLAME GAS HEA TER SAFETY INFORMATION AND INSTALLATION MANUAL For more information, visit www.desatech.com For more information, visit www.desatech.com 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 s ...
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Desa Tech CBN20 - page 2
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 2 TABLE OF CONTENTS SAFETY INFORMATION WARNING ICON G 001 WARNINGS IMPORTANT: Read this owner ’ s manual carefully and completely before trying to assemble, operate, or ser- vice this heater. Improper use of this heater can cause serious injury or ...
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Desa Tech CBN20 - page 3
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 3 3 SAFETY INFORMATION LOCAL CODES PRODUCT IDENTIFICATION UNPACKING PRODUCT FEATURES 3. 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 • ...
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Desa Tech CBN20 - page 4
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 4 AIR FOR COMBUSTION AND VENTILA TION Today’s homes are built more energy efficient 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 ...
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Desa Tech CBN20 - page 5
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 5 5 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 work sheet to determine if you have a confined or unconfined space. Space: Includes the ...
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Desa Tech CBN20 - page 6
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 6 Figure 3 - Ventilation Air from Outdoors 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 s ...
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Desa Tech CBN20 - page 7
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 7 7 INST ALLA TION WARNING: A qualified service person must in- stall heater. Follow all local codes. CHECK GAS TYPE Use only the correct type of gas (natural or propane/LP). If your gas supply is not the correct gas type, do not install heater. Cal ...
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Desa Tech CBN20 - page 8
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 8 INSTALLATION Thermostat Sensing Bulb Installing Heater To Wall WARNING: Maintain minimum clearances shown in Figure 8, page 9. If you can, provide greater clear- ances from floor and joining wall. Marking Screw Locations 1. T ape mounting bracket ...
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Desa Tech CBN20 - page 9
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 9 9 INSTALLATION Installing Heater To Wall (Cont.) INST ALLA TION Continued 2. Mark screw locations on wall (see Figure 8). Note: Only mark last hole on each end of mounting bracket. Insert mounting screws through these holes only . 3. Remove tape a ...
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Desa Tech CBN20 - page 10
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 10 Figure 12 - Installing Bottom Mounting Screws Side View Front View Wall Spacer Heater INST ALLA TION Continued INSTALLATION Installing Heater To Wall (Cont.) Mounting Heater To Floor MOUNTING HEATER TO FLOOR Mounting Base Feet to Heater 1. Lay he ...
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Desa Tech CBN20 - page 11
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 11 11 INST ALLA TION Continued INSTALLATION Connecting To Gas Supply For propane/LP gas, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 a ...
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Desa Tech CBN20 - page 12
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 12 INST ALLA TION Continued INSTALLATION Checking Gas Connections WARNING: Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at once. WARNING: Never use an open flame to check for a leak. Apply a noncorro ...
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Desa Tech CBN20 - page 13
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 13 13 OPERATING HEATER For Your Safety Read Before Lighting Lighting Instructions OPERA TING HEA TER FOR YOUR SAFETY READ BEFORE LIGHTING A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follo w these instruction ...
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Desa Tech CBN20 - page 14
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 14 TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1. T ur n control knob c lockwise to the OFF position. 2. T ur n off all electric power to the appliance if service is to be perfor med. Shutting Off Burner Only (pilot stays lit) Turn control knob ...
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Desa Tech CBN20 - page 15
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 15 15 INSPECTING HEATER Burner Flame Heater CLEANING AND MAINTENANCE ODS/Pilot and Burner Cleaning Burner Pilot Air Inlet Cabinet NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles enter the heater and burn causin ...
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Desa Tech CBN20 - page 16
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 16 TECHNICAL SER VICE You may have further questions about installation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-866-672-6040. When calling please have your model and serial numbers of y ...
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Desa Tech CBN20 - page 17
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 17 17 TROUBLESHOOTING 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. T ...
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Desa Tech CBN20 - page 18
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 18 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 whe ...
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Desa Tech CBN20 - page 19
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 19 19 TROUBLESHOOTING 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 ’ ...
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Desa Tech CBN20 - page 20
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 20 ILLUSTRA TED P ARTS BREAKDOWN CBN20 CBP20 ILLUSTRATED PARTS BREAKDOWN CBN20, CBP20 2 3 5 6 8 9 9 10 11 12 13 14 16 18 19 4 7 1 21 20 15 17 22 ...
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Desa Tech CBN20 - page 21
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 21 21 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 24 of this manual. PARTS LIST CBN20, CBP20 KEY PART NUMBER FOR NO. CBN20 CBP20 DESCRIPTI ...
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Desa Tech CBN20 - page 22
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 22 ILLUSTRA TED P ARTS BREAKDOWN CBN20T, CBP20T CBN30T, CBP30T ILLUSTRATED PARTS BREAKDOWN CBN20T, CBP20T, CBN30T, CBP30T 2 9 10 10 11 12 13 14 16 18 19 4 7 1 15 17 3 5 6 8 20 ...
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Desa Tech CBN20 - page 23
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 23 23 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 24 of this manual. PARTS LIST CBN20T, CBP20T, CBN30T, CBP30T KEY PART NUMBER FOR NO. CBN ...
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Desa Tech CBN20 - page 24
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 24 REPLACEMENT PARTS ACCESSORIES REPLACEMENT P AR TS Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty. PARTS UNDER WARRANTY Contact authorized dealers of this product. If they can? ...
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Desa Tech CBN20 - page 25
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 25 25 1. Where will the product be used? ❍ Living/Family Room ❍ Office/W arehouse ❍ Utility Shed/Outbuilding ❍ Garage ❍ Bedroom ❍ Bathroom ❍ Other 2. If you bought this product yourself, did you plan to purchase this type of product be ...
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Desa Tech CBN20 - page 26
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 26 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 Postage Required TM T APE T APE ...
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Desa Tech CBN20 - page 27
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 27 27 Baltimore Electric 5 Manila Ave Hamden, CT 06514-0322 1-800-397-7553 203-248-7553 Portable Heater Parts 342 N. County Rd. 400 East Valparaiso, IN 46383-9704 219-462-7441 1-888-619-7060 www.portableheaterparts.com sales@portableheaterparts.com ...
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Desa Tech CBN20 - page 28
107882-01E For more information, visit www.desatech.com For more information, visit www.desatech.com 28 KEEP THIS WARRANTY W ARRANTY INFORMA TION 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 wri ...
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