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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
Also Design-Certified As Vented Decorative Appliances When
Not Used With Hand-Held Thermostat Remote
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.
For more information, visit www.desatech.com
MODELS
VGL18NRA, VGL18PRA
VGL24NRA, VGL24PRA
VGL30NRA, VGL30PRA
Save this manual for future reference.
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Related Manuals for Desa VGL18NRA
Summary of Contents for Desa VGL18NRA
- Page 1 • 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. Save this manual for future reference. For more information, visit www.desatech.com MODELS VGL18NRA, VGL18PRA VGL24NRA, VGL24PRA VGL30NRA, VGL30PRA...
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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 fireplace or in a listed ventless firebox enclosure. -
Page 3: Safety Information
SAFETY INFORMATION WARNING: This product con- tains and/or generates chemicals known to the State of California to cause cancer or birth defects or other reproductive harm. IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate or service this heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion,... - Page 4 SAFETY INFORMATION Continued 1. This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases. 2. Do not place propane/LP supply tank(s) in- side any structure. Locate propane/LP supply tank(s) outdoors (propane/LP units only).
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Page 5: Product Identification
PRODUCT IDENTIFICATION Rear Log Left Top Log Left Bottom Log Electronic Ignitor Button Ember Bed Burner Optional Remote Control LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of local codes, use the lat- est edition of The National Fuel Gas Code, ANSI Z223/NFPA 54*. -
Page 6: Air For Combustion And Ventilation
AIR FOR COMBUSTION AND VENTILATION WARNING: This heater shall not be installed in a confined space or unusually tight con- struction unless provisions are provided for adequate combus- tion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home. -
Page 7: Combustion And Ventilation Air
Add the Btu/Hr of all fuel burning appliances in the space. Vent-free fireplace Gas water heater* Gas furnace Vented gas heater Gas fireplace logs Other gas appliances* Total * Do not include direct-vent gas appliances. Di- rect-vent draws combustion air from the outdoors and vents to the outdoors. -
Page 8: Installation
AIR FOR COMBUSTION AND VENTILATION Continued Ventilation Air From Outdoors Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor. Connect these items directly to the outdoors or spaces open to the outdoors. - Page 9 INSTALLATION Continued CAUTION: This heater cre- ates warm air currents. These currents move heat to wall sur- faces next to heater. Installing heater next to vinyl or cloth wall coverings or operating heater where impurities (such as, but not limited to, tobacco smoke, aromatic candles, cleaning flu- ids, oil or kerosene lamps, etc.) in the air exist, may discolor walls...
- Page 10 INSTALLATION Continued Minimum Noncombustible Material Clearances If Not Using Mantel Note: If using a mantel, proceed to If Using Mantel. If not using a mantel, follow the informa- tion below. You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick.
- Page 11 NOTICE: If your installation does not meet the minimum clearances shown, you must do one of the following: • operate the logs only with the flue damper open • raise the mantel to an acceptable height • remove the mantel. Minimum Non- Combustible Material...
- Page 12 INSTALLATION Continued FLOOR CLEARANCES A. If installing appliance on the floor level, you must maintain the minimum distance of 14" to combustibles (see Figure 8). B. If combustible materials are less than 14" to the fireplace, you must install appliance at least 5"...
- Page 13 INSTALLATION Continued INSTALLING HEATER BASE ASSEMBLY CAUTION: Do not remove the data plates attached to the heater base assembly. The data plates contain important warranty and safety information. WARNING: You must secure this heater to fireplace floor. If not, heater will move when you adjust controls.
- Page 14 (not supplied). Install the exter- nal regulator between the heater and propane/LP supply. WARNING: Never connect natural gas heater to private (non- utility) gas wells. This gas is com- monly known as wellhead gas. Installation Items Needed Before installing heater, make sure you have the items listed below.
- Page 15 INSTALLATION Continued WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas. We recommend that you install a sediment trap in supply line as shown in Figure 14. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater.
- Page 16 INSTALLATION Continued 3. Check all joints from propane/LP supply tank to equipment shutoff valve for propane/LP gas (see Figure 16) or from gas meter to equipment shutoff valve for natural gas (see Figure 17). Apply noncorrosive leak detection fluid to gas joints.
- Page 17 INSTALLATION Continued 8. Install remote receiver into receiver bracket using pads and push button clips provided with receiver (see Figure 20). 9. Connect wires to control valve at the TPTH and TH locations as shown in Figure 21. Note: Make sure excess wire does not interfere with burner or pilot.
- Page 18 INSTALLATION Continued INSTALLING LOGS WARNING: Failure to position 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. CAUTION: After installa- tion and periodically thereafter, check to ensure that no flame comes in contact with any log.
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Page 19: Operating Heater
INSTALLATION Continued Figure 27 - Installing Logs #5 and #6 OPERATING HEATER FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not fol- low these instructions exactly, a fire or explosion may result causing property damage, per- sonal injury or loss of life. A. - Page 20 Pilot Burner Ignitor Electrode Figure 20 - Pilot www.desatech.com 112882-01D...
- Page 21 OPERATING HEATER Continued OPTIONAL HAND-HELD REMOTE OPERATION Note: All remote control accessories must be purchased separately (see Accessories, pages 29). Follow instructions included with the re- mote control. NOTICE: You must light the pilot before using the hand-held re- mote control unit. See Lighting Instructions on page 19.
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Page 22: Inspecting Burners
OPERATING HEATER Continued Pilot Burner Thermocouple Propane/LP Gas Natural Gas Figure 33 - Correct Pilot Flame Pattern Figure 34 - Incorrect Pilot Flame Pattern www.desatech.com 112882-01D... -
Page 23: Cleaning And Maintenance
CLEANING AND MAINTENANCE WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burner and circu- lating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a quali- fied service person. -
Page 24: 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 When ignitor button is pressed, there is no spark at ODS/pilot... - Page 25 OBSERVED PROBLEM ODS/pilot lights but flame goes out when control knob is re- leased One or both burners do not light after ODS/pilot is lit Delayed ignition burner Burner backfiring during com- bustion Slight smoke or odor during initial operation 112882-01D TROUBLESHOOTING Continued...
- Page 26 OBSERVED PROBLEM Moisture/condensation noticed on windows Heater produces a whistling noise when burner is lit White powder residue forming within burner box or on adjacent walls or furniture Remote does not function TROUBLESHOOTING Continued POSSIBLE CAUSE 1. Not enough combustion/ven- tilation air 1.
- Page 27 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.
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Page 28: Wiring Diagram
If so, contact DESA Heating Productsʼ Technical Service Department at 1-866-672-6040. When calling, please have your model and serial numbers of your heater ready. You can also visit DESA Heating Productsʼ techni- cal service web site at www.desatech.com. Btu (Variable) Type Gas... -
Page 29: Accessories
ACCESSORIES Purchase these fireplace accessories from your lo- cal dealer. If they can not supply these accessories call DESA Heating Productsʼ Sales Department at 1-866-672-6040 for referral information. You can also write to the address listed on the back page of this manual. -
Page 30: Illustrated Parts Breakdown And Parts List
ILLUSTRATED PARTS BREAKDOWN MODELS VGL18PRA, VGL18NRA VGL24PRA, VGL24NRA VGL30PRA, VGL30NRA www.desatech.com 112882-01D... -
Page 31: Parts List
This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 28 of this manual. PART NUMBER VGL18PRA VGL24PRA VGL18NRA VGL24NRA 114010-02 114010-02 114010-01 114010-01 111646-01 111646-01 103779-01 103779-01 103778-01... -
Page 32: Warranty Information
This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to restore this heater to proper operating condition and an allowance for labor when provided by a DESA Heat- ing Products Authorized Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product and/or DESA Heating Products who will provide original factory replacement parts.