Desa LDL3924NR Owner's Operation And Installation Manual

Unvented (vent-free) gas log heater. 24 inch and 30 inch remote-ready models

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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
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.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Available from Allparts Equipment and Accessories - 1-877-475-5660 - www.allpartsinc.com
24" and 30" Remote-Ready Models
MODELS LDL3924NR, LDL3924PR,
LDL3930NR AND LDL3930PR
Also Design-Certified As Vented Decorative Appliances

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Summary of Contents for Desa LDL3924NR

  • Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL 24" and 30" Remote-Ready Models MODELS LDL3924NR, LDL3924PR, LDL3930NR AND LDL3930PR 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.
  • Page 2: Table Of Contents

    TAbLE OF CONTENTS Safety Informa ion .......... Troubleshooting ..........3 Local Codes............4 Replacement Parts ..........7 Unpacking............5 Service Hints ............. 7 Product Identification ........... 5 Technical Service..........7 Product Features ..........5 Illustrated Parts Breakdown and Parts List..8 Specifications ............
  • Page 3: Safety Information

    SAFETy INFORMATION WARNING: Do not allow fans Continued to blow directly into the fireplace. Avoid any drafts that alter burner WARNING: This product con- flame patterns. Ceiling fans can tains and/or generates chemicals create drafts that alter burner known to the state of California flame patterns.
  • Page 4: Local Codes

    11. Do not run heater SAFETy INFORMATION • where flammable liquids or vapors are used Continued or stored 1. This appliance is only for use with the type of • under dusty conditions gas indicated on the rating plate. This appliance 12.
  • Page 5: Unpacking

    UNPACkING SAFETY DEVICE This heater has a pilot with an Oxygen Deple- tion Sensing (ODS) safety shutoff system. The CAUTION: Do not remove the ODS/pilot is a required feature for vent-free room data plates from the grate as- heaters. The ODS/pilot shuts off the heater if there sembly.
  • Page 6 AIR FOR COMbUSTION DETERMINING FRESH-AIR FLOW AND VENTILATION FOR HEATER LOCATION Determining if You Have a Confined or Continued Unconfined Space Unusually Tight Construction Use this work sheet to determine if you have a The air that leaks around doors and windows confined or unconfined space.
  • Page 7 AIR FOR COMbUSTION VENTILATION AIR Ventilation Air From Inside Building AND VENTILATION This fresh air would come from an adjoining un- Continued confined space. When ventilating to an adjoining unconfined space, you must provide two perma- 4. Compare the maximum Btu/Hr the space can nent openings: one within 12"...
  • Page 8: Installation

    INSTALLATION WARNING: Seal any fresh air NOTICE: This heater is intended vents or ash clean-out doors located for use as supplemental heat. on floor or wall of fireplace. If not, Use this heater along with your drafting may cause pilot outage or primary heating system.
  • Page 9 INSTALLATION Continued Example INSTALLATION AND CLEARANCES FOR VENT-FREE OPERATION WARNING: Maintain the minimum clearances. If you can, provide greater clearances from floor, ceiling, and adjoin- *Minimum 16" from Side Wall ing wall. Figure 4 - Minimum Clearance for MINIMUM FIREPLACE CLEARANCE TO Combustible to Wall COMBUSTIBLE MATERIALS NOTICE: Manual control heaters...
  • Page 10: Mantel Clearances

    IMPORTANT: If you cannot meet these minimum INSTALLATION clearances, you must operate heater with chimney Continued flue damper open. Go to Installing Damper Clamp Accessory for Vented Operation, page 11. Noncombustible Requirements for Material Safe Installation MANTEL CLEARANCES Distance (A) In addition to meeting noncombustible material clearances, you must also meet required clearances 1"...
  • Page 11 INSTALLATION INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED Continued OPERATION NOTICE: Surface temperatures of Note: When used as a vented heater, appliance adjacent walls and mantels be- must be installed only in a solid-fuel burning come hot during operation. Walls fireplace with a working flue and constructed of and mantels above the firebox noncombustible material.
  • Page 12 4. Place logs in their proper position on heater INSTALLATION base (see Installing Logs, page 16). Continued 5. Center heater base and logs front-to-back INSTALLING HEATER BASE and side-to-side in fireplace. ASSEMBLY 6. Carefully remove logs without moving heater base. WARNING: You must secure 7.
  • Page 13 INSTALLATION CONNECTING TO GAS SUPPLY Continued WARNING: This appliance Installing Batteries in Receiver requires a 1/2" NPT (National 1. Locate slot on battery cover of receiver (see Pipe Thread) inlet connection to Figure 13). Firmly insert tool such as a small the pressure regulator.
  • Page 14 We recommend that you install a sediment trap in INSTALLATION supply line as shown in Figure 16. Locate sediment Continued trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment trap where trapped matter is not CAUTION: Use only new, likely to freeze.
  • Page 15 INSTALLATION Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa) Continued 1. Close equipment shutoff valve (see Figure 17). 2. Pressurize supply piping system by either opening CHECKING GAS CONNECTIONS propane/LP supply tank valve for propane/LP gas WARNING: Test all gas pip- or opening main gas valve located on or near gas meter for natural gas, or using compressed air.
  • Page 16 INSTALLATION Log #1 Continued PRESSURE TESTING HEATER GAS CONNECTIONS 1. Open equipment shutoff valve (see Figure 17, page 15). 2. Open main gas valve located on or near gas meter for natural gas or open propane/LP supply tank valve. 3. Make sure control knob of heater is in the OFF position.
  • Page 17: Operating Heater

    INSTALLATION OPERATING HEATER Continued FOR YOUR SAFETY 4. Place right front log (log #4) on peg of log #3 and READ BEFORE LIGHTING grate prongs as shown in Figure 22, page 16. 5. Place left crossover log (log #5) on pegs of WARNING: If you do not fol- log #2 and #3 (see Figure 23).
  • Page 18 OPERATING HEATER 1. STOP! Read the safety information on page 17. Continued 2. Make sure equipment shutoff valve is fully LIGHTING open. 3. Remove control cover log (see Figure 25). INSTRUCTIONS 4. Set remote selector switch in the AUTO position (see Figure 26). WARNING 5.
  • Page 19: Remote Operation

    OPERATING HEATER TO TURN OFF GAS TO APPLIANCE Continued Shutting Off Heater 8. With control knob pressed in, press and Press on/off key on remote control and turn release ignitor button. This will light pilot. control knob clockwise to the OFF posi- The pilot is attached to the rear of the front tion (see Figure 26, page 18).
  • Page 20 OPERATING HEATER LOW BATTERY DETECTION AND BACKUP Continued A battery icon will be displayed on the LCD FAHRENHEIT/CELSIUS TEMPERATURE display when batteries are low in the remote control (see Figure 29). INDICATION When the receiver detects a low battery condition; To toggle between temperature degrees Fahren- heit and Celsius perform the following steps.
  • Page 21: Inspecting Heater

    INSPECTING HEATER CLEANING AND Check pilot flame pattern and burner flame pat- MAINTENANCE terns often. WARNING: Turn off heater PILOT FLAME PATTERN and let cool before cleaning. Figure 30 shows a correct pilot flame pattern. Figure 31 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the CAUTION: You must keep thermocouple.
  • Page 22 CLEANING AND Ports/Slots MAINTENANCE Burner Tube Continued 4. Blow air through the ports/slots and holes in Pilot the burner. Assembly 5. Check the injector holder located at the end of the burner tube again. Remove any large Pilot Air particles of dust, dirt, lint, or pet hair with a Inlet Hole soft cloth or vacuum cleaner nozzle.
  • Page 23: Troubleshooting

    TROUbLESHOOTING 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 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 24 TROUbLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame 1. Control knob not fully 1. Press in control knob fully goes out when control knob is pressed in 2. Control knob not pressed in 2. After ODS/pilot lights, keep released long enough control knob pressed in 30...
  • Page 25 TROUbLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Slight smoke or odor during 1. Not enough air 1. Check burner for dirt and debris. If found, clean burner initial operation (see Cleaning and Mainte- nance, page 21) 2. Gas regulator defective 2.
  • Page 26 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 27: Replacement Parts

    • type of gas used (propane/LP or natural gas) model and serial numbers of your heater ready. • purchase date You can also visit DESA Heating Products’ techni- Usually, we will ask you to return the part to the cal services web site at www.desatech.com.
  • Page 28: Illustrated Parts Breakdown

    ILLUSTRATED PARTS bREAkDOWN MODELS LDL3924NR, LDL3924PR, LDL3930NR AND LDL3930PR 27-2 27-3 27-4 27-5 27-1 27-6 27-8 27-7 Available from Allparts Equipment and Accessories - 1-877-475-5660 - www.allpartsinc.com...
  • Page 29: Parts List

    This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 27 of this manual. PART NUMBER LDL3924NR LDL3924PR LDL3930NR LDL3930PR DESCRIPTION QTY. ASM, Low Profile Base, Painted 1077-01 1077-01 1077-01 1077-01 Dual Burner...
  • Page 30: Specifications

    SPECIFICATIONS Btu (Variable) 26,000/39,000 26,000/39,000 Type Gas Propane/LP Natural Ignition Piezo Piezo Manifold Pressure 8.0" W.C. 3.5" W.C. Inlet Gas Pressure(in. of water) Maximum 14" 10.5" Minimum* 11" 5" * For purpose of input adjustment WIRING DIAGRAM White Black Available from Allparts Equipment and Accessories - 1-877-475-5660 - www.allpartsinc.com...
  • Page 31: Accessories

    If they can not supply these accessories, For all models. Order when additional rock is desired. (1.8 lb. bag) call DESA Heating Products at 1-866-672-6040 for referral information. You can also write to the CLEANING KIT - GCK address listed on the back page of this manual.

This manual is also suitable for:

Ldl3924prLdl3930nrLdl3930pr

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