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Desa VRL24NR, VRL24PR, VRL30NR, VRL30PR, CSG3924NR,CSG3924PR Owner's Operating & Installation Manual

Unvented (vent-free) gas log heater 24" and 30" remote-ready and 24" and 30" thermostat models
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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
Patent Pending
VRL24NR, VRL24PR, VRL30NR, VRL30PR, CSG3924NR,
CSG3924PR, CTB3924NR, CTB3924PR, CSG3930NR, CSG3930PR
VRL24NT, VRL24PT, VRL30NT, VRL30PT, CSG3924NT, CSG3924PT,
Remote-Ready Models Also Design-Certified As Vented Decorative Appliances
WARNING: If the information in this manual is not fol-
lowed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
— WHAT TO DO IF YOU SMELL GAS
• 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.
• If you cannot reach your gas supplier, call the fire
department.
— Installation and service must be performed by a quali-
fied installer, service agency or the gas supplier.
24" AND 30" REMOTE-READY MODELS:
24" AND 30" THERMOSTAT MODELS:
CTB3924NT, CTB3924PT
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Summary of Contents for Desa VRL24NR, VRL24PR, VRL30NR, VRL30PR, CSG3924NR,CSG3924PR

  • Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL Patent Pending 24" AND 30" REMOTE-READY MODELS: VRL24NR, VRL24PR, VRL30NR, VRL30PR, CSG3924NR, CSG3924PR, CTB3924NR, CTB3924PR, CSG3930NR, CSG3930PR 24" AND 30" THERMOSTAT MODELS: VRL24NT, VRL24PT, VRL30NT, VRL30PT, CSG3924NT, CSG3924PT, CTB3924NT, CTB3924PT Remote-Ready Models Also Design-Certified As Vented Decorative Appliances WARNING: If the information in this manual is not fol- lowed exactly, a fire or explosion may result causing...

  • Page 2: Table Of Contents

    WARNING: Improper installation, adjustment, altera- tion, service or maintenance can cause injury or prop- erty damage. Refer to this manual for correct installation and operational procedures. For assistance or addi- tional information consult a qualified installer, service agency or the gas supplier. WARNING: This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built fire- place or in a listed ventless firebox enclosure.

  • Page 3: Safety Information

    SAFETY INFORMATION WARNING: This appliance is for installation only in a solid-fuel WARNING: This product con- burning fireplace or approved tains and/or generates chemicals known to the State of California ventless firebox enclosure. to cause cancer or birth defects or other reproductive harm. WARNING: Do not allow fans to blow directly into the fireplace.
  • Page 4 SAFETY INFORMATION 9. Before using furniture polish, wax, carpet cleaner or similar products, turn heater off. If Continued heated, the vapors from these products may create a white powder residue within burner Keep the appliance area clear box or on adjacent walls or furniture. and free from combustible ma- 10.

  • Page 5: Product Identification

    PRODUCT OPTIONAL REMOTE IDENTIFICATION CONTROL ACCESSORIES There are four optional remote controls that can be purchased separately for Remote-Ready Models Only: • wall switch • hand-held ON/OFF remote • wall thermostat • hand-held thermostat remote See Accessories, page 41. The wall thermostat or hand-held thermostat may not be used where vented decorative listing is required.

  • Page 6: Unpacking

    UNPACKING AIR FOR COMBUSTION AND VENTILATION CAUTION: Do not remove the data plates from the grate as- WARNING: This heater shall sembly. The data plates contain not be installed in a confined important warranty and safety space or unusually tight con- information.

  • Page 7: Air For Combustion

    AIR FOR COMBUSTION 1. Determine the volume of the space (length x width x height). AND VENTILATION Length x Width x Height =__________cu. ft. Continued (volume of space) Example: Space size 20 ft. (length) x 16 ft. Unusually tight construction is defined as (width) x 8 ft.

  • Page 8: Installation

    AIR FOR COMBUSTION Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or AND VENTILATION ducts. You must provide two permanent openings: Continued one within 12" of the ceiling and one within 12" of the floor. Connect these items directly to the If the actual Btu/Hr used is less than the maximum outdoors or spaces open to the outdoors.
  • Page 9 INSTALLATION WARNING: Never install the Continued heater • in a bedroom or bathroom WARNING: Installation and unless installed as a vented repair should be done by a quali- appliance, see page 13 (Re- fied service person. The appliance mote-Ready Models Only) should be inspected before use and •...

  • Page 10: Installation And Clearances

    INSTALLATION NOTICE: Manual control heaters Continued may be used as a vented product. If so, you must always run heater INSTALLATION AND CLEARANCES with chimney flue damper open. (Vent-Free Operation Only) If running heater with damper WARNING: Maintain the open, noncombustible material minimum clearances.

  • Page 11: Mantel Clearances

    INSTALLATION Continued Noncombustible Requirements for Material Distance (A) Safe Installation 12" or more Noncombustible material okay. Between 8" Install fireplace hood and 12" accessory (GA6050, GA6052 or GA6053, see Accessories, page 41). Less than 8" Noncombustible material must be extended to at least 8". See Between 8"...
  • Page 12 INSTALLATION Continued Determining Minimum Mantel Clearance NOTICE: If your installation does when Using a Hood not meet the minimum clear- If minimum clearances in Figure 6 (page 11) are ances shown, you must do one not met, you must have a hood. When using a hood of the following: there are still certain minimum mantel clearances required.
  • Page 13 INSTALLATION Continued Damper INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED Damper OPERATION (Remote-Ready Models Only) Clamp Note: When used as a vented heater, appliance must be installed only in a solid-fuel burning Damper Damper fireplace with a working flue and constructed of noncombustible material.
  • Page 14 INSTALLATION Continued IMPORTANT: Make sure the heater burners are level. If heater is not level, heater will not work properly. For thermostat models, avoid damage to thermostat bulb. Avoid nicks or sharp bends in thermostat bulb wire. Keep thermostat bulb in mounting bracket until ready to mount base Mounting to floor.
  • Page 15 INSTALLATION Installation must include a equipment shutoff valve, union and plugged 1/8" NPT tap. Locate NPT tap Continued within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 14 or 15, page Installation Items Needed Before installing heater, make sure you have the 16, depending on your model).
  • Page 16 INSTALLATION CHECKING GAS CONNECTIONS Continued WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once. WARNING: Never use an open flame to check for a leak. Apply a commercial leak de- tection solution to all joints.
  • Page 17 Propane/LP Equipment Supply Shutoff Valve Tank Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa) 1. Close equipment shutoff valve (see Figure 16). 2. Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.
  • Page 18 INSTALLATION Log #5 will seat in this Continued location. INSTALLING LOGS Log #1 WARNING: Failure to posi- tion the parts in accordance with these diagrams or failure to use only parts specifically approved with this heater may result in property damage or personal injury.
  • Page 19 INSTALLATION Log #3 Continued Log #2 5. Place back of log #5 on notch in log #4 (as shown in Figure 22), across back part of log #1 and onto pin on log #2 (see Figure 20, page 18 and Figure 22). 6.

  • Page 20: Operating Heater

    WHAT TO DO IF YOU SMELL GAS • Do not try to light any appliance. • Do not touch any electric switch; do not use any phone in your building. • Immediately call your gas supplier from a neighborʼs phone. Follow the gas supplierʼs instructions.
  • Page 21 OPERATING HEATER 8. Turn control knob counterclockwise to desired heating level. The front burner Continued should light. Set control knob to any heat Note: Home owners generally prefer to op- level between HI and LO. erate their heater with the chimney damper 9.
  • Page 22 OPERATING HEATER C. Use only your hand to push in or turn the gas control knob. Never use tools. If the Continued knob will not push in or turn by hand, donʼt THERMOSTAT CONTROL try to repair it, call a qualified service tech- nician or gas supplier.
  • Page 23 OPERATING HEATER 9. Slightly push in and turn control knob coun- terclockwise to the ON position. Continued 10. Wait one minute and switch selector 1. STOP! Read the safety information, switch to the ON position to light burner. page 22. Note: AUTO is only functional when using 2.
  • Page 24 OPERATING HEATER burner on and off with the hand-held remote control unit. Continued IMPORTANT: Do not leave the selector switch TO TURN OFF GAS in the REMOTE or ON position when the pilot TO APPLIANCE is not lit. This will drain the battery. Shutting Off Heater 1.

  • Page 25: Inspecting Burners

    Digital Turns Hand- Display Held Remote Shows On or Off and Temperature Allows You to and Settings Choose the Manual Setting Turns Burners On Selects Auto or Off Setting Decreases Increases Room Room Temperature Temperature in in AUTO AUTO Mode Mode Figure 35 - Thermostat Hand-Held Remote Control Unit (GHRCTB)

  • Page 26: Cleaning And Maintenance

    INSPECTING BURNERS CLEANING AND Continued MAINTENANCE BURNER FLAME PATTERNS WARNING: Turn off heater Figure 38 shows correct front and/or middle burner and let cool before cleaning. flame patterns. Figure 39 shows incorrect front and/or middle burner flame patterns. The incorrect burner flame patterns show yellow tipping at top CAUTION: You must keep of blue flame.
  • Page 27 Injector Holder 1. Shut off the unit, including the pilot. Allow the unit to cool for at least thirty minutes. 2. Inspect burners, pilot and primary air inlet holes on injector holder for dust and dirt (see Figures 40 or 41). 3.

  • Page 28: Troubleshooting

    TROUBLESHOOTING WARNING: Turn off and unplug heater and let cool before servicing. Only a qualified service 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. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY...
  • Page 29 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame goes 1. Control knob not fully pressed in 1. Press in control knob fully out when control knob is re- 2. Control knob not pressed in 2. After ODS/pilot lights, keep con- leased long enough trol knob pressed in 30 seconds...
  • Page 30 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Yellow flame in front/middle 1. Not enough air 1. Check burner(s) for dirt burner during burner combustion and debris. If found, clean (VRL and CSG models) burner(s) (see Cleaning and Yellow flame in front burner Maintenance, page 26) during burner combustion (CTB 2.
  • Page 31 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. Fol- low the gas supplier’s instructions.

  • Page 32: Optional Positioning Of Thermostat Sensing Bulb

    OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB FOR MASONRY AND FACTORY- BUILT METAL FIREPLACE If your log set cycles to pilot, but the room tem- perature drops to a lower than ideal comfort level before the log set comes back on, you may want to reposition the thermostat sensing bulb.

  • Page 33: Wiring Diagram

    Thermostat Adhesive-backed Sensing Bulb Mounting Clip Capillary Do Not Crimp Capillary Figure 48 - Positioning the Thermostat Sensing Bulb in the Vertical Position with the Capillary at the Bottom 110021-01H www.desatech.com...

  • Page 34: Specifications

    SPECIFICATIONS 24" Thermostat-Controlled 30" Thermostat-Controlled Btu (Variable) 10,000/40,000 10,000/40,000 10,000/40,000 10,000/40,000 Type Gas Propane/LP Natural Propane/LP Natural Ignition Piezo Piezo Piezo Piezo Manifold Pressure 7.4" W.C. 3.0" W.C. 7.4" W.C. 3.0" W.C. Inlet Gas Pressure (in. of water) Maximum 14" 10.5"...

  • Page 35: Illustrated Parts Breakdown

    ILLUSTRATED PARTS BREAKDOWN LOGS Log Set for Models: Log Set for Models: CSG3924NT, CSG3924PT, CSG3924NR, VRL24NT, VRL24PT, VRL24NR, CSG3924PR, CSG3930NR, CSG3930PR, VRL24PR, VRL30NT, VRL30PT, CTB3924NT, CTB3924PT, VRL30NR, VRL30PR CTB3924NR, and CTB3924PR PART NUMBER CSG3924NT CSG3924PT CSG3924NR CSG3924PR VRL24NT VRL30NT CTB3924NT VRL24PT VRL30PT CTB3924PT...
  • Page 36 ILLUSTRATED PARTS BREAKDOWN THERMOSTAT-CONTROLLED MODELS VRL24NT, VRL24PT, VRL30NT, VRL30PT CSG3924NT, CSG3924PT, CTB3924NT, CTB3924PT www.desatech.com 110021-01H...

  • Page 37: Parts List

    PARTS LIST THERMOSTAT-CONTROLLED MODELS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 40 of this manual. PART NUMBER KEY VRL24NT VRL24PT NO. CSG3924NT CSG3924PT VRL30NT VRL30PT CTB3924NT CTB3924PT DESCRIPTION Burner Carriage 110328-01 110061-03 110328-01 110061-03 110328-01 110061-03 Tube, Front and Rear Burner 1 110061-02 110061-02 110061-02 110061-02 110061-02 110061-02 Tube, Middle Burner T-Stat...
  • Page 38 ILLUSTRATED PARTS BREAKDOWN REMOTE-READY MODELS VRL24NR, VRL24PR, VRL30NR, VRL30PR CSG3924NR, CSG3924PR, CTB3924NR, CTB3924PR CSG3930NR, CSG3930PR Items 12 & 22 Natural Gas Models Only www.desatech.com 110021-01H...
  • Page 39 PARTS LIST REMOTE-READY MODELS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 40 of this manual. PART NUMBER KEY VRL24NR VRL24PR CSG3930NR CSG3930PR NO. CSG3924NR VRL30NR CSG3924PR VRL30PR CTB3924NR CTB3924PR DESCRIPTION Burner Carriage 110328-01 110328-01 110061-03...

  • Page 40: Replacement Parts

    REPLACEMENT PARTS TECHNICAL SERVICE Note: Use only original replacement parts. This You may have further questions about installation, will protect your warranty coverage for parts operation or troubleshooting. If so, contact DESA replaced under warranty. Heating Productsʼ Technical Service Department at 1-866-672-6040.

  • Page 41: Accessories

    ACCESSORIES NOTICE: All accessories may not be available for all fireplace models. Purchase these heater accessories from your local dealer. If they can not supply these accessories, RECEIVER AND HAND-HELD call DESA Heating Products at 1-866-672-6040 THERMOSTAT REMOTE CONTROL for referral information. You can also write to the KIT - GHRCTB AND CGHRCTB address listed on the back page of this manual.
  • Page 42 NOTES ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ www.desatech.com 110021-01H...
  • Page 43 NOTES ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ 110021-01H www.desatech.com...
  • Page 44 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 www.desatech.com 110021-01 Rev. H 110021 01 09/04 NOT A UPC...

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