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UNVENTED (VENT-FREE)
GAS LOG HEATER
OWNER’S OPERATION AND
INSTALLATION MANUAL
For more information, visit www.desatech.com
For more information, visit www.desatech.com
Also Design-Certified As Vented Decorative Appliances
MODELS
LDL3924NR
LDL3924PR
LDL3930NR
LDL3930PR
24" and 30" Remote-Ready Models
WARNING: Improper installation, adjust-
WARNING: If the information in this manual
ment, alteration, service, or maintenance
is not followed exactly, a fire or explosion
can cause injury or property
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TABLE OF CONTENTS 2 SAFETY INFORMATION TABLE OF CONTENTS SAFETY INFORMATION ...................................................................2 TROUBLESHOOTING .....................................................................19 LOCAL CODES ..................................................................................3 ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST .............. 22 UNPACKING ......................................................................................3 SPECIFICATIO
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SAFETY INFORMATION 3 LOCAL CODES 3 UNPACKING SAFETY INFORMATION Continued 1. This appliance is only for use with the type of gas indicated on 14. Do not operate heater if any log is broken. Do not operate the rating plate. This appliance is not convertible for use with heater if a log is chipped (dime-sized or larger). other gases. 15. Turn heater off and let cool before servicing, installing, or re- 2. Do not place propane/LP supply tank(s) inside any structure. Lo- pairing. Only a qualified se
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PRODUCT IDENTIFICATION 4 REMOTE CONTROL ACCESSORIES PRODUCT FEATURES AIR FOR COMBUSTION AND VENTILATION Providing Adequate Ventilation PRODUCT IDENTIFICATION AIR FOR COMBUSTION AND VENTILATION 8 Piece WARNING: This heater shall not be installed in a Log Set confined space or unusually tight construction un- less provisions are provided for adequate combus- tion and ventilation air. Read the following instruc- tions to insure proper fresh air for this and other fuel- burning appliances in your h
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AIR FOR COMBUSTION AND VENTILATION 5 Providing Adequate Ventilation (Cont.) 5 Determining Fresh-Air Flow for Heater Location AIR FOR COMBUSTION AND VENTILATION Continued c. caulking or sealants are applied to areas such as 3. Add the Btu/Hr of all fuel burning appliances in the space. joints around window and door frames, between sole Vent-free heater _____________ Btu/Hr plates and floors, between wall-ceiling joints, between Gas water heater* _____________ Btu/Hr wall panels, at penetrations f
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AIR FOR COMBUSTION AND VENTILATION Ventilation Air 6 AIR FOR COMBUSTION AND VENTILATION Continued VENTILATION AIR 12" Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must Ventilation provide two permanent openings: one within 12" of the ceiling and Ventilation Grills Grills one within 12" of the floor on the wall connecting the two spaces Into Adjoining Room, Into Adjoining Or Option 2 (s
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INSTALLATION 7 Check Gas Type 7 Installation and Clearances for Vent-Free Operation INSTALLATION NOTICE: This heater is intended for use as supple- CAUTION: This heater creates warm air currents. mental heat. Use this heater along with your primary These currents move heat to wall surfaces next to heating system. Do not install this heater as your heater. Installing heater next to vinyl or cloth wall primary heat source. If you have a central heating coverings or operating heater where impuriti
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INSTALLATION Installation and Clearances for Vent-Free Operation (Cont.) 8 INSTALLATION Continued Carefully follow the instructions below. This will ensure safe noncombustible material behind it. Noncombustible material must installation into a masonry, UL127-listed manufactured fireplace, extend at least 8" up. If noncombustible material is less than 12", you or listed vent-free firebox. must install the fireplace hood accessory. See Figure 5 for minimum clearances. Minimum Clearances For Side
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INSTALLATION 9 Mantel Clearances 9 Floor Clearances INSTALLATION Continued Mantel Shelf MANTEL CLEARANCES 12" Underside of 10" Mantel Shelf In addition to meeting noncombustible material clearances, you must 8" also meet required clearances between fireplace opening and mantel 6" shelf. If you do not meet the clearances listed below, you will need a hood. 1 2 /2" All minimum distances are Determining Minimum Mantel Clearance in inches Minimum Non- Combustible If you meet minimum clearance betw
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INSTALLATION Installing Damper Clamp Accessory for Vented Operation 10 Installing Heater Base Assembly INSTALLATION Continued INSTALLING DAMPER CLAMP ACCESSORY INSTALLING HEATER BASE ASSEMBLY FOR VENTED OPERATION WARNING: You must secure this heater to fire- Note: When used as a vented heater, appliance must be installed place floor. If not, heater will move when you adjust only in a solid-fuel burning fireplace with a working flue and controls. Moving heater may cause a gas leak or log constru
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INSTALLATION 11 Installing Heater Base Assembly (Cont.) 11 Installing Batteries for Remote Receiver and Hand-Held Remote Control INSTALLATION Continued 5. Center heater base and logs front-to-back and side-to-side in fireplace. Cover 6. Carefully remove logs without moving heater base. 4 AA 7. Mark screw locations through one hole on each side of the Batteries base (see Figure 12). If installing in a brick-bottom fireplace, Slot mark screw locations in mortar joint of bricks. Battery 8. Drill ho
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INSTALLATION Connecting To Gas Supply 12 INSTALLATION Continued IMPORTANT: Install equipment shutoff valve in an accessible CONNECTING TO GAS SUPPLY location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance. WARNING: This appliance requires a 1/2" NPT (National Pipe Thread) inlet connection to the pres- Check your building codes for any special requirements for locating sure regulator. equipment shutoff valve to fireplaces. Apply pipe joint sealant lightly
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INSTALLATION 13 Checking Gas Connections 13 INSTALLATION Continued 3. Make sure control knob of heater is in the OFF position. CHECKING GAS CONNECTIONS 4. Check all joints to gas control (see Figures 18 or 19). Apply WARNING: Test all gas piping and connections, noncorrosive leak detection fluid to all joints. Bubbles form- internal and external to unit, for leaks after installing ing show a leak. or servicing. Correct all leaks at once. 5. Correct all leaks at once. 6. Light heater (see Operat
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INSTALLATION Installing Logs 14 INSTALLATION Continued 3. Place left front log (log #3) on grate prongs as shown in Figure 22. INSTALLING LOGS 4. Place right front log (log #4) on peg of log #3 and grate prongs as shown in Figure 22. WARNING: Failure to position the parts in accor- dance with these diagrams or failure to use only parts 5. Place left crossover log (log #5) on pegs of log #2 and #3 (see specifically approved with this heater may result in Figure 23). Place middle crossover log (l
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O L I P F F O OPERATING HEATER 15 For Your Safety Read Before Lighting 15 Lighting Instructions OPERATING HEATER Note: Home owners generally prefer to operate their heater FOR YOUR SAFETY with the chimney damper closed. This will put all the heat into READ BEFORE LIGHTING the room. However, there may be times you will desire the full flames of the highest heat setting but will find the heat output excessive. You can open the chimney damper (if you have one) WARNING: If you do not follow these i
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OPERATING HEATER Lighting Instructions (Cont.) 16 To Turn Off Gas To Appliance Manual Lighting Procedure Hand-Held Remote Operation OPERATING HEATER Continued 8. With control knob pressed in, press and release ignitor but- MANUAL LIGHTING ton. This will light pilot. The pilot is attached to the rear of PROCEDURE the front burner. If needed, keep pressing ignitor button until pilot lights. 1. Follow steps 1 through 7 under Lighting Instructions, page 15. Note: If pilot does not stay lit, contact
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OPERATING HEATER 17 Hand-Held Remote Operation (Cont.) 17 INSPECTING BURNERS Pilot Flame Pattern Burner Primary Air Holes Main Burner OPERATING HEATER INSPECTING BURNERS Continued Check pilot flame pattern and burner flame patterns often. Setting Flame Height PILOT FLAME PATTERN Press the up or down key until the small triangle is to the left of Figure 30 shows a correct pilot flame pattern. Figure 31 shows an large flame icon at the top of LCD display (see Figure 29, page incorrect pilot flame
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CLEANING AND MAINTENANCE Cleaning Burner Injector Holder and Pilot Air Inlet Hole 18 Logs Main Burner CLEANING AND MAINTENANCE Clean the pilot assembly also. A yellow tip on the pilot flame WARNING: Turn off heater and let cool before indicates dust and dirt in the pilot assembly. There is a small pilot cleaning. air inlet hole about two inches from where the pilot flame comes out of the pilot assembly (see Figure 33). With the unit off, lightly blow air through the air inlet hole. You may blow
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TROUBLESHOOTING 19 19 TROUBLESHOOTING Note: For additional help, visit DESA CAUTION: Never use a wire, WARNING: Turn off heater Heating Products’ technical service web needle, or similar object to clean and let cool before servicing. Only site at www.desatech.com. ODS/pilot. This can damage ODS/ a qualified service person should pilot unit. service and repair heater. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY When ignitor button is
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TROUBLESHOOTING 20 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY 1. Inlet gas pressure is too low Burner does not light after ODS/pilot is lit 1. Contact local natural or propane/LP gas company 2. Burner orifice(s) clogged 2. Clean burner(s) (see Cleaning and Mainte- nance, page 18) or replace burner orifice 3. Thermopile leads disconnected or im- 3. Reconnect leads (see Wiring Diagram, properly connected page 24) 4. Burners will not come on in remote po- 4. Replace battery in
