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Desa LDL3924NR Owner's Operation And Installation Manual

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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
24" AND 30" REMOTE-READY MODELS
LDL3924NR, LDL3924PR, LDL3930NR AND LDL3930PR
Also Design-Certified As Vented Decorative Appliances
WARNING: If the information in this manual is not
followed 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.
For more information, visit www.desatech.com

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  • Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL 24" AND 30" REMOTE-READY MODELS LDL3924NR, LDL3924PR, LDL3930NR AND LDL3930PR Also Design-Certified As Vented Decorative Appliances WARNING: If the information in this manual is not followed 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.............. 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....... 8 Air.For.Combustion.and.Ventilation...... 5 Specifications............. 30 Installation............8 Wiring.Diagram........... 30 Operation............17 Accessories............
  • Page 3 SAFETY 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: Safety

    SAFETY page 5. If heater keeps shutting off, see Troubleshooting,.page.3. Continued 11..Do.not.run.heater 1.. This.appliance.is.only.for.use.with.the.type. • where flammable liquids or vapors are of.gas.indicated.on.the.rating.plate..This. used.or.stored appliance.is.not.convertible.for.use.with. •.under.dusty.conditions other.gases.. 1..Do.not.use.this.heater.to.cook.food.or.burn. .. Do.not.place.propane/LP.supply.tank(s).in- paper.or.other.objects. side.any.structure..Locate.propane/LP.supply. 13..Do.not.use.heater.if.any.part.has.been.ex- tank(s).outdoors.(propane/LP.units.only). posed.to.or.under.water..Immediately.call. 3.. If.you.smell.gas a qualified service technician to inspect •.shut.off.gas.supply the.room.heater.and.to.replace.any.part.

  • Page 5: Unpacking

    UNPACkING ODS/pilot.is.a.required.feature.for.vent-free. room. heaters.. The. ODS/pilot. shuts. off. the. heater.if.there.is.not.enough.fresh.air. CAUTION: Do not remove the data plates from the grate as- PIEZO IGNITION SYSTEM sembly. The data plates contain This heater has a piezo ignitor. This system important warranty and safety requires no matches, batteries, or other sources.to.light.heater.
  • Page 6 AIR FOR COMbUSTION DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION AND VENTILATION Continued Determining if You Have a Confined or Unconfined Space Unusually Tight Construction Use.this.work.sheet.to.determine.if.you.have. The.air.that.leaks.around.doors.and.windows. a confined or unconfined space. may.provide.enough.fresh.air.for.combustion. . Includes. the. room. in. which. you. will. Space: and ventilation.

  • Page 7: Combustion And Ventilation Air

    AIR FOR COMbUSTION ceiling and one within 12" of the floor on the wall.connecting.the.two.spaces.(see.options. AND VENTILATION 1 and 2, Figure 2). You can also remove door Continued into adjoining room (see option 3, Figure 2). . ____________ . Btu/Hr. (maximum. the. Follow.

  • Page 8: Installation

    INSTALLATION NOTICE: This heater is intended WARNING: Never install the for use as supplemental heat. heater Use this heater along with your • in a bedroom or bathroom primary heating system. Do not unless installed as a vented install this heater as your pri- appliance, see page 11 mary heat source.
  • Page 9 INSTALLATION Continued INSTALLATION AND CLEARANCES FOR VENT-FREE OPERATION Example WARNING: Maintain the minimum clearances. If you can, provide greater clearances from floor, ceiling, and adjoin- ing wall. MINIMUM FIREPLACE CLEARANCE TO *Minimum.16".from.Side.Wall. COMBUSTIBLE MATERIALS Side Wall 16", Ceiling 42", Front 36" Figure 4 - Minimum Clearance for Combustible to Wall LOG SIZING REQUIREMENTS...

  • Page 10: Mantel Clearances

    INSTALLATION MANTEL CLEARANCES Continued In.addition.to.meeting.noncombustible.mate- rial clearances, you must also meet required Noncombustible Requirements for clearances between fireplace opening and Material Safe Installation mantel.shelf..If.you.do.not.meet.the.clearances. Distance (A) listed below, you will need a hood. 1".or.more. Noncombustible. Determining Minimum Mantel Clearance If. you. meet. minimum. clearance. between. material.OK.
  • Page 11 INSTALLATION INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED Continued OPERATION NOTICE: Surface temperatures Note: When used as a vented heater, ap- of adjacent walls and mantels be- pliance.must.be.installed.only.in.a.solid-fuel. come hot during operation. Walls burning. fireplace. with. a. working. flue. and. and mantels above the firebox constructed.of.noncombustible.material.
  • Page 12 INSTALLATION 4.. Place.logs.in.their.proper.position.on.heater. 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.. Mark.screw.locations.through.one.hole.on. this heater to fireplace floor. If each.side.of.the.base.(see.Figure.1)..If. not, heater will move when you installing in a brick-bottom fireplace, mark adjust controls.
  • 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. Pipe Thread) inlet connection to (see.Figure.13)..Firmly.insert.tool.such.as. the pressure regulator. a small screwdriver, butter knife, or dime into.the.slot.and.lift.up.to.remove.cover.
  • Page 14 INSTALLATION We. recommend. that. you. install. a. sediment. trap. in. supply. line. as. shown. in. Figure. 16.. Continued Locate.sediment.trap.where.it.is.within.reach. for.cleaning..Install.in.piping.system.between. CAUTION: Use only new, fuel. supply. and. heater.. Locate. sediment. black iron or steel pipe. Inter- trap. where. trapped. matter. is. not. 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.Fig- CHECKING GAS CONNECTIONS ure.17). 2. Pressurize supply piping system by either WARNING: Test all gas piping opening. propane/LP. supply. tank. valve. and connections, internal and for.propane/LP.gas.or.opening.main.gas.
  • Page 16 INSTALLATION Log.#1 Continued PRESSURE TESTING HEATER GAS CONNECTIONS 1.. Open.equipment.shutoff.valve.(see.Figure. 17, page 15). .. Open.main.gas.valve.located.on.or.near. gas. meter. for. natural. gas. or. open. pro- pane/LP.supply.tank.valve. 3.. Make.sure.control.knob.of.heater.is.in.the. OFF.position. 4.. Check.all.joints.to.gas.control.(see.Figures. 18 or 19, page 15). Apply noncorrosive leak detection fluid to all joints. Bubbles Figure 20 - Rear Log (Log #1) Placement forming.show.a.leak.

  • Page 17: Operation

    INSTALLATION OPERATION Continued FOR YOUR SAFETY READ BEFORE LIGHTING 3.. Place.left.front.log.(log.#3).on.grate.prongs. as shown in Figure 22, page 16. WARNING: If you do not fol- 4.. Place.right.front.log.(log.#4).on.peg.of.log. low these instructions exactly, #3.and.grate.prongs.as.shown.in.Figure. 22, page 16. a fire or explosion may result 5..
  • Page 18 OPERATION 1.. STOP!. Read. the. safety. information. on. page.17. Continued .. Make.sure.equipment.shutoff.valve.is.fully. LIGHTING open. INSTRUCTIONS 3.. Remove.control.cover.log.(see.Figure.5). 4.. Set.remote.selector.switch.in.the.AUTO. WARNING position.(see.Figure.6).. • If fireplace has glass doors, 5.. Press. in. and. turn. control. knob. clockwise. never operate this heater with .to.the.OFF.position.(see.Figure.6).
  • Page 19 OPERATION TO TURN OFF GAS TO APPLIANCE Continued Shutting Off Heater Note: If pilot does not stay lit, contact a Press.on/off.key.on.remote.control.and.turn. qualified service person or gas supplier control. knob. clockwise. . to. the. OFF. for repairs. Until repairs are made, light position (see Figure 26, page 18).
  • Page 20 OPERATION 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. INDICATION control.(see.Figure.). To. toggle. between. temperature. degrees. When. the. receiver. detects. a. low. battery. Fahrenheit. and. Celsius. perform. the. follow- condition; ing.steps. •. Three.acoustic."beeps".are.generated.from. 1.. Press.the.up.and.down.key.until.the.small. the.receiver triangle.is.to.the.left.of.the.clock.icon.(see. •. Appliance.is.turned.off.and.will.go.to.the. Figure.).

  • Page 21: Inspecting.heater

    INSPECTING HEATER CLEANING AND MAINTENANCE Check pilot flame pattern and burner flame patterns.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 pat- tern.
  • Page 22 CLEANING AND MAINTENANCE Continued 3. Inspect burner, pilot, and primary air inlet Ports/Slots holes.on.injector.holder.for.dust.and.dirt. (see.Figures.3.and.33). Burner. 4.. Blow.air.through.the.ports/slots.and.holes. Tube in.the.burner. Pilot. 5.. Check.the.injector.holder.located.at.the. Assembly end. of. the. burner. tube. again.. Remove. any large particles of dust, dirt, lint, or pet hair.with.a.soft.cloth.or.vacuum.cleaner.

  • 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 When.
  • 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. pressed.in is.released ..Control. knob. not. pressed. 2. After ODS/pilot lights, keep in.long.enough control.knob.pressed.in.30. seconds 3..Safety. interlock. system. 3..Wait.one.minute.for.safety. has.been.triggered. interlock. system. to. reset.. Repeat.ignition.operation 4..Equipment.
  • Page 25 TROUbLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Slight.smoke.or.odor.during. 1..Not.enough.air 1..Check. burner. for. dirt. and. initial.operation debris. If found, clean burner.(see.Cleaning and Maintenance, page 21) ..Gas.regulator.defective ..Replace.gas.control 3..Residues. from. manufac- 3..Problem. will. stop. after. a. turing.processes.and.logs. few.hours.of.operation curing Heater.produces.a.whistling. 1..Turning.control.knob.to.HI. 1..Turn. control. knob. to. LO. noise.when.burners.are.lit position.when.burners.are.
  • 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

    When. calling. please. have. your. model. and. Usually, we will ask you to return the part to serial.numbers.of.your.heater.ready. the.factory. You can also visit DESA Heating, LLC’s web site.at.www.desatech.com. PARTS NOT UNDER WARRANTY Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA Heating, LLC at 1-866-672-6040 for referral information.
  • Page 28 PARTS MODELS LDL3924NR, LDL3924PR, LDL3930NR AND LDL3930PR 27-2 27-3 27-4 27-5 27-1 27-6 27-8 27-7 www.desatech.com 111515-01J...
  • Page 29 PARTS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions.listed.under.Replacement Parts.on.page.7.of.this.manual. PART NO. DESCRIPTION QTY. ASM, Low Profile Base, Painted • • • • 1077-01 Dual.Burner • • • • 10377-01 ODS.Pilot.(Natural.Gas) • • 103778-01 ODS.Pilot.(Propane/LP) •...

  • Page 30: Specifications

    SPECIFICATIONS LDL3924NR, LDL3930NR LDL3924PR, LDL3930PR • Btu (Variable): 26,000/39,000 • Btu (Variable): 26,000/39,000 •. Type.Gas:.Natural •. Type.Gas:.Propane/LP • Ignition: Piezo • Ignition: Piezo •. Manifold.Pressure:.3.5".W.C. •. Manifold.Pressure:.8".W.C. •. Inlet.Gas.Pressure.(in..of.water) •. Inlet.Gas.Pressure.(in..of.water) Maximum 10.5" W.C., Minimum* 5" W.C. Maximum 14" W.C., Minimum* 11" W.C.

  • Page 31: Accessories

    ACCESSORIES NOTICE: All accessories may not be available for all fireplace models. Purchase. these. accessories. from. your. local. dealer..If.they.can.not.supply.these.accessories. call DESA Heating, LLC at 1-866-672-6040 for FIREPLACE HOOD information..You.can.also.write.to.the.address. Black - GA6050 listed.on.the.back.page.of.this.manual. Brass - GA6052 Antique Brass - GA6053 For all models.

  • Page 32: Warranty

    LIMITED WARRANTIES FOR NEW AND FACTORY RECONDITIONED PRODUCTS New Products: DESA Heating, LLC warrants this heater and any parts thereof, to be free of defects in materials and workmanship for two (2) year from the date of first purchase, when operated and main- tained.in.accordance.with.the.manufacturer's.instructions..These.warranties.are.extended.only.to.the.

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