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Desa INTERNATIONAL UNVENTED (VENT-FREE) GAS LOG HEATER manual

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Table of contents for the manual

  • Page 1

    INTERNA TIONAL UNVENTED (VENT -FREE) GAS LOG HEA TER OWNER’S OPERATION AND INSTALLATION MANUAL Remote-Ready Models Also Design-Certified As Vented Decorative Appliances Save this manual for future reference. Save this manual for future reference. WARNING: If the information in this manual is not followed exactly, a fire or explosion may result ca[...]

  • Page 2

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 2 SAFETY INFORMA TION DANGER: Carbon monoxide poisoning may lead to death! 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[...]

  • Page 3

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 3 3 SAFETY INFORMA TION Continued 1. This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not con vertible for use with other gases. 2. Do not place propane/LP supply tank(s) inside any structure. Locate p[...]

  • Page 4

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 4 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 Z223.1/NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway [...]

  • Page 5

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 5 5 AIR FOR COMBUSTION AND VENTILA TION Today’s homes are built more energy efficient than ever. New mate- rials, increased insulation, and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and[...]

  • Page 6

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 6 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 room in which you will install heater plus any adjoi[...]

  • Page 7

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 7 7 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 provide two permanent openin[...]

  • Page 8

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 8 INST ALLA TION NOTICE: This heater is intended for use as supple- mental heat. Use this heater along with your primary heating system. Do not install this heater as your primary heat source. If you have a central heating system, you may run system ’[...]

  • Page 9

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 9 9 Heat Resistant Material (A) Carefully follow the instructions below. This will ensure safe installation into a masonry, UL127-listed manufactured fireplace, or listed vent-free firebox. Minimum Clearances For Side Combustible Material, Side Wall, an[...]

  • Page 10

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 10 Hearth 5" Min. Combustible Material Hearth Combustible Material 5" 14" Min. Combustible Material Non-Combustible Material Minimum Non- Combustible Material 8" Min. 12" 15" 18" All minimum distances are in inches 20&[...]

  • Page 11

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 11 11 INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION (Remote-Ready Models Only) Note: When used as a vented heater, appliance must be installed only in a solid-fuel burning fireplace with a working flue and constructed of noncombustible material[...]

  • Page 12

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 12 INST ALLA TION Continued 2. Locate two masonry scre ws in hardw are package. 3. Place heater base in f ireplace. 4. Place logs in their proper position on heater base (see Installing Logs, p ag es 1 5 through 17) . 5. Center heater base and logs fron[...]

  • Page 13

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 13 13 INST ALLA TION Continued Propane/LP Supply Tank External Regulator Figure 13 - External Regulator With Vent Pointing Down Vent Pointing Down Installation must include an equipment shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap[...]

  • Page 14

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 14 ON POSITION OFF POSITION INST ALLA TION Continued 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 noncorrosive leak detecti[...]

  • Page 15

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 15 15 INSTALLATION Installing Logs INSTALLING LOGS WARNING: Failure to position the parts in accor- dance with these diagrams or failure to use only parts specifically approved with this heater may result in property damage or personal injury. CAUTION: [...]

  • Page 16

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 16 INST ALLA TION Continued Models VGX24NT, VGX24PT, VGX30NT, VGX30PT, VGX24NR, VGX24PR, VGX30NR, VGX30PR, EX24NR, EX24PR, EX30NR AND EX30PR 1. Place log #1 (ember bed) onto the base. Position the log over the shoulder bolts on either side of the front [...]

  • Page 17

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 17 17 INST ALLA TION Continued Models LGX3924NT and LGX3924PT 1. Place log #1 (ember bed) onto the base. Position the log ov er the shoulder bolts on either side of the front burner . The log will sit on top of the front burner (see Figure 28). 2. Place[...]

  • Page 18

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 18 INST ALLA TION Continued Figure 33 - Attaching Grate to Base Assembly (Logs and Base Will Vary According to Model) Grate Slots in Base ATTACHING GRATE TO BASE ASSEMBLY Locate the two slots in the front of the base assembly. Carefully slide the decora[...]

  • Page 19

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 19 19 Note: Home owners generally prefer to operate their heater with the chimney damper closed. This will put all the heat into the room. However, there may be times you will desire the full flames of the Hi heat setting but will find the heat output e[...]

  • Page 20

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 20 OPERA TING HEA TER Continued 1. Follo w steps 1 through 5 under Lighting Instructions , page 19. 2. Depress contr ol knob and light pilot with match. 3. Keep contr ol knob pr essed in f or 30 seconds after lighting pilot. After 30 seconds, release co[...]

  • Page 21

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 21 21 Figure 38 - Pilot (Propane/LP) Ignitor Electrode Pilot Burner Thermocouple Figure 39 - Pilot (Natural) Ignitor Electrode Pilot Burner Thermocouple Shutting Off Heater 1. T ur n control knob clockwise to the OFF position. 2. T ur n rear b urner con[...]

  • Page 22

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 22 OPERA TING HEA TER Continued OPTIONAL REMOTE OPERATION O F F P I L O T O N L O H I ON OFF REMOTE Figure 40 - Control Knobs, Selector Switch and Ignitor Button Locations for Remote Operation Rear Burner Control Knob Selector Switch Ignitor Button Cont[...]

  • Page 23

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 23 23 Yellow Tipping At Top of Blue Flame Pilot Burner Thermocouple Pilot Burner Pilot Burner Thermocouple FRONT BURNER FLAME PATTERN Figure 44 shows correct front burner flame pattern. Figure 45 shows incorrect front burner flame pattern. The incorrect[...]

  • Page 24

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 24 WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burners, and circulating air passageways of heater clean. In- spect these areas of heater before each use. Have heater inspected yearly by a qualified servic[...]

  • Page 25

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 25 25 TROUBLESHOOTING Note: All troubleshooting items are listed in order of operation. WARNING: Turn off heater and let cool before servicing. Only a qualified service person should service and repair heater. CAUTION: Never use a wire, needle, or simil[...]

  • Page 26

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 26 TROUBLESHOOTING TROUBLESHOOTING Continued OBSERVED PROBLEM One or both burners do not light after ODS/ pilot is lit Delayed ignition of one or both burners Burner backfiring during combustion Yellow flame in front burner during burner combustion Slig[...]

  • Page 27

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 27 27 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 neighb[...]

  • Page 28

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 28 OPTIONAL POSITIONING OF THERMOST A T SENSING BULB (THERMOSTAT-CONTROLLED MODELS ONLY) FOR MASONRY AND FACTORY-BUILT METAL FIREPLACE If your log set cycles to pilot, but the room temperature drops to a lower than ideal comfort level before the log set[...]

  • Page 29

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 29 29 SPECIFICA TIONS 24" Remote-Ready 30" Remote-Ready Btu (Variable) 10,000/39,000 10,000/39,000 10,000/39,000 10,000/39,000 Type Gas Propane/LP Natural Propane/LP Natural Ignition Piezo Piezo Piezo Piezo Manifold Pressure 8.0" W.C. 3.5[...]

  • Page 30

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 30 ILLUSTRA TED P ARTS BREAKDOWN LOGS ILLUSTRATED PARTS BREAKDOWN Logs VGX24NR, VGX24PR, VGX30NR, VGX30PR VGX24NT, VGX24PT, VGX30NT, VGX30PT EX24NR, EX24PR, EX30NR, EX30PR CGX3924NR, CGX3924PR, CGX3924NT, CGX3924PT, CGX3930NT, CGX3930PT LGX3924NT, LGX39[...]

  • Page 31

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 31 31 PART NUMBER FOR VGX24NR VGX30NR VGX24PR VGX30PR VGX24NT VGX30NT CGX3924NR VGX24PT VGX30PT CGX3924PR KEY EX24NR EX30NR CGX3924NT CGX3930NT LGX3924NT NO. EX24PR EX30PR CGX3924PT CGX3930P T LGX3924PT DESCRIPTION QTY. 1 108102-01 108102-02 108102-03 1[...]

  • Page 32

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 32 ILLUSTRA TED P ARTS BREAKDOWN THERMOSTAT-CONTROLLED VGX24NT, VGX24PT VGX30NT, VGX30PT CGX3924NT, CGX3924PT CGX3930NT, CGX3930PT ILLUSTRATED PARTS BREAKDOWN Thermostat-Controlled VGX24NT, VGX24PT, VGX30NT, VGX30PT CGX3924NT, CGX3924PT, CGX3930NT, CGX3[...]

  • Page 33

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 33 33 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 38 of this manual. THERMOSTAT-CONTROLLED PARTS LIST Thermostat-Controlled VGX24NT, VGX24PT, [...]

  • Page 34

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 34 ILLUSTRA TED P ARTS BREAKDOWN REMOTE-READY VGX24NR, VGX24PR VGX30NR, VGX30PR EX24NR, EX24PR EX30NR, EX30PR CGX3924NR, CGX3924PR ILLUSTRATED PARTS BREAKDOWN Remote-Ready Models VGX24NR, VGX24PR, VGX30NR, VGX30PR EX24NR, EX24PR, EX30NR, EX30PR CGX3924N[...]

  • Page 35

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 35 35 This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 38 of this manual. P AR TS LIST REMOTE-READY PARTS LIST Remote-Ready Models VGX24NR, VGX24PR, VGX30NR, VG[...]

  • Page 36

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 36 ILLUSTRA TED P ARTS BREAKDOWN THERMOSTAT-CONTROLLED LGX3924NT, LGX3924PT ILLUSTRATED PARTS BREAKDOWN Thermostat-Controlled LGX3924NT, LGX3924PT 1 20 17 3 2 22 13 Natural Gas Models Only 25 8 9 5 7 6 19 26 18 4 7 14 12 10 15 11 2 21 16 24 12 23[...]

  • Page 37

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 37 37 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 38 of this manual. THERMOSTAT-CONTROLLED PARTS LIST Thermostat-Controlled LGX3924NT, LGX3924[...]

  • Page 38

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 38 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’t supply original replacement pa[...]

  • Page 39

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 39 39 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 before[...]

  • Page 40

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 40 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 INTERNA TIONAL Postage Required[...]

  • Page 41

    108114 For more information, visit www.desatech.com For more information, visit www.desatech.com 41 41 NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _________________________________________________[...]

  • Page 42

    INTERNA TIONAL 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 www.desatech.com 108114-01 Rev. C 07/01 NOT A UPC 108114 01[...]