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UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL 18", 24", 30" and 36" Variable Manually-Controlled Models VUL18NV, VUL18PV, VUL24NV, VUL24PV, VUL30NV, VUL30PV, VUL36NV and VUL36PV 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 qualified 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 Table of Contents Safety................................................................... 2 Product Identification............................................ 5 Local Codes......................................................... 5 Unpacking............................................................ 5 Product Features.................................................. 5 Air For Combustion and Ventilation...................... 6 Installation............................................................ 8 Operation............................................................ 17 Inspecting Burners............................................. 19 Cleaning and Maintenance................................. 20 Troubleshooting.................................................. 21 Specifications..................................................... 25 Service Hints...................................................... 25 Technical Service............................................... 25 Replacement Parts............................................. 25 Parts................................................................... 26 Accessories........................................................ 30 Warranty...............................................Back Cover Safety WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual for correct installation and operational procedures. For assistance or additional 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. It is design-certified for these installations in accordance with ANSI Z21.11.2. Exception: Do not install this appliance in a factory-built fireplace that includes instructions stating it has not been tested or should not be used with unvented gas logs. 2 WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provisions for adequate combustion and ventilation air must be provided. Refer to Air for Combustion and Ventilation section on page 6 of this manual. This appliance may be installed in an aftermarket,* permanently located, manufactured (mobile) home, where not prohibited by local codes. 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. * Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer www.desatech.com 119677-01G SAFETY Continued WARNING: This product contains 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 fireplace. Improper use of this fireplace can cause serious injury or death from burns, fire, explosion, electrical shock and carbon monoxide poisoning. DANGER: Carbon monoxide poisoning may lead to death! Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness or nausea. If you have these signs, the fireplace may not be working properly. Get fresh air at once! Have fireplace serviced. Some people are more affected by carbon monoxide than others. These include pregnant women, people with heart or lung disease or anemia, those under the influence of alcohol and those at high altitudes. Natural and Propane/LP gases are odorless. An odor-making agent is added to these gases. The odor helps you detect a gas leak. However, the odor added to the gas can fade. Gas may be present even though no odor exists. Make certain you read and understand all warnings. Keep this manual for reference. It is your guide to safe and proper operation of this fireplace. WARNING: Any change to this heater or its controls can be dangerous. WARNING: Do not use a blower insert, heat exchanger insert or other accessory not approved for use with this heater. 119677-01G WARNING: Do not allow fans to blow directly into the fireplace. Avoid any drafts that alter burner flame patterns. Ceiling fans can create drafts that alter burner flame patterns. Altered burner patterns can cause sooting. Due to high temperatures, the appliance should be located out of traffic and away from furniture and draperies. Do not place clothing or other flammable material on or near the appliance. Never place any objects on the heater. Heater base assembly becomes very hot when running heater. Keep children and adults away from hot surface to avoid burns or clothing ignition. Heater will remain hot for a time after shutdown. Allow surface to cool before touching. Carefully supervise young children when they are in the room with heater. You must operate this heater with the fireplace screen and hood in place. Make sure fireplace screen and hood are in place before running heater. Keep the appliance area clear and free from combustible materials, gasoline and other flammable vapors and liquids. www.desatech.com 3 SAFETY 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) inside any structure. Locate propane/LP supply tank(s) outdoors (propane/LP units only). 3. 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. Follow the gas supplier’s instructions • if you cannot reach your gas supplier, call the fire department 4. This heater shall not be installed in a bedroom or bathroom, unless installed as a vented appliance. See Installing Damper Clamp Accessory for Vented Operation, page 12. This gas log set may not be installed as a vented appliance in a bedroom or bathroom in the Commonwealth of Massachusetts. 5. Before installing in a solid fuel burning fireplace, the chimney flue and firebox must be cleaned of soot, creosote, ashes and loose paint by a qualified chimney cleaner. Creosote will ignite if highly heated. A dirty chimney flue may create and distribute soot within the house. Inspect chimney flue for damage. If damaged, repair flue and firebox before operating heater. 6. Do not burn solid-fuel in a masonry or UL127 factory-built fireplace in which a vent-free room heater is installed. 7. If fireplace has glass doors, never operate this heater with glass doors closed. If you operate heater with doors closed, heat buildup inside fireplace will cause glass to burst. Make sure there are no obstructions across openings of fireplace. 4 8. To prevent the creation of soot, follow the instructions in Cleaning and Maintenance, page 20. 9. Before using furniture polish, wax, carpet cleaner or similar products, turn heater off. If heated, the vapors from these products may create a white powder residue within burner box or on adjacent walls and furniture. 10. This heater needs fresh, outside air ventilation to run properly. This heater has an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if enough fresh air is not available. See Air for Combustion and Ventilation, page 6. If heater keeps shutting off, see Troubleshooting, page 21. 11. Do not run heater • where flammable liquids or vapors are used or stored • under dusty conditions 12. Do not use this heater to cook food or burn paper or other objects. 13. Do not use heater if any part has been exposed to or under water. Immediately call a qualified service technician to inspect the room heater and to replace any part of the control system and any gas control which has been under water. 14. Do not operate heater if any log is broken. Do not operate heater if a log is chipped (dime-sized or larger). 15. Turn heater off and let cool before servicing, installing or repairing. Only a qualified service person should install, service or repair heater. 16. Operating heater above elevations of 4,500 feet may cause pilot outage. 17. To prevent performance problems, do not use propane/LP fuel tank of less than 100 lb. capacity (propane/LP units only). 18. Provide adequate clearances around air openings. www.desatech.com 119677-01G Product Identification Log Set Log Set Ignitor Ignitor Cover Log Base Assembly Ignitor Control Knob Control Knob Cover Log Base Assembly VUL18NV/PV and VUL24NV/PV VUL36NV/PV Figure 1 - Product Identification Local Codes Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code, ANSI Z223.1/NFPA 54*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National Fire Protection Association, Inc. Batterymarch Park Quincy, MA 02269 State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the Commonwealth of Massachusetts. Sellers of unvented propane or natural gas-fired supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit. Vent-free gas products are prohibited for bedroom and bathroom installation in the Commonwealth of Massachusetts. Unpacking CAUTION: Do not remove data plates from grate assembly. Data plates contain important warranty and safety information. 1. Remove logs and heater base assembly from carton. Note: Do not pick up heater base assembly by burners. This could damage heater. Always handle base assembly by grate. 2. Remove all protective packaging applied to logs and heater for shipment. 3. Check heater for any shipping damage. If heater is damaged call DESA Heating, LLC at 1-866-672-6040 for replacement parts before returning to dealer. Product Features Operation This heater is clean burning. It requires no outside venting. There is no heat loss out a vent or up a chimney. Heat is generated by both realistic flames and glowing coals. This heater is designed for vent-free operation with flue damper closed. It has been tested and approved to ANSI Z21.11.2 standard for unvented heaters. State and local codes in some areas prohibit the use of vent-free heaters. This heater may also be operated as a vented decorative 119677-01G (ANSI Z21.60) product by opening the flue damper (Non-Thermostat Models Only). Safety Device This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff system. The 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. Electronic Ignition System This heater has an electronic ignitor to light pilot. www.desatech.com 5 Air For Combustion and Ventilation WARNING: This heater shall not be installed in a room or space unless the required volume of indoor combustion air is provided by the method described in the National Fuel Gas Code, ANSI Z223.1/NFPA 54, the International Fuel Gas Code, or applicable local codes. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home. Today’s homes are built more energy efficient than ever. New materials, increased insulation and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in. During heating months, home owners want their homes as airtight as possible. While it is good to make your home energy efficient, your home needs to breathe. Fresh air must enter your home. All fuel-burning appliances need fresh air for proper combustion and ventilation. Exhaust fans, fireplaces, clothes dryers and fuel burning appliances draw air from the house to operate. You must provide adequate fresh air for these appliances. This will insure proper venting of vented fuel-burning appliances. PROVIDING ADEQUATE VENTILATION The following are excerpts from National Fuel Gas Code, ANSI Z223.1/NFPA 54, Air for Combustion and Ventilation. All spaces in homes fall into one of the three following ventilation classifications: 1. Unusually Tight Construction 2. Unconfined Space 3. Confined Space The information on pages 6 through 8 will help you classify your space and provide adequate ventilation. Unusually Tight Construction The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in buildings of unusually tight construction, you must provide additional fresh air. 6 Unusually tight construction is defined as construction where: a. walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one perm (6 x 10-11 kg per pa-sec-m2) or less with openings gasketed or sealed and b. weather stripping has been added on openable windows and doors and c. caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical and gas lines and at other openings. If your home meets all of the three criteria above, you must provide additional fresh air. See Ventilation Air From Outdoors, page 8. If your home does not meet all of the three criteria above, proceed to Determining Fresh-Air Flow For Heater Location, below. Confined and Unconfined Space The National Fuel Gas Code, ANSI Z223.1/ NFPA 54 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconfined space. * Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them. DETERMINING FRESH-AIR FLOW FOR Heater LOCATION Determining if You Have a Confined or Unconfined Space Use this work sheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install fireplace plus any adjoining rooms with doorless passageways or ventilation grills between the rooms. www.desatech.com 119677-01G AIR FOR COMBUSTION AND VENTILATION Continued 1. Determine the volume of the space (length x width x height). Length x Width x Height =__________cu. ft. (volume of space) Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space) If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of the space. 2. Multiply the space volume by 20 to determine the maximum Btu/Hr the space can support. _ ________ (volume of space) x 20 = (Maximum Btu/Hr the space can support) Example: 2560 cu. ft. (volume of space) x 20 = 51,200 (maximum Btu/Hr the space can support) 3. Add the Btu/Hr of all fuel burning appliances in the space. Vent-free fireplace ___________ Btu/Hr Gas water heater* ___________ Btu/Hr Gas furnace ___________ Btu/Hr Vented gas heater ___________ Btu/Hr Gas fireplace logs ___________ Btu/Hr Other gas appliances* +__________ Btu/Hr Total =__________ Btu/Hr * Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors. Example: 40,000 Btu/Hr Gas water heater ___________ 33,000 Btu/Hr Vent-free fireplace +__________ Total =__________ 73,000 Btu/Hr 4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used. _________ Btu/Hr (maximum the space can support) _________ Btu/Hr (actual amount of Btu/Hr used) Example: 51,200 Btu/Hr (maximum the space can support) 73,000 Btu/Hr (actual amount of Btu/Hr used) The space in the above example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support. You must provide additional fresh air. Your options are as follows: A. Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation Air From Inside Building. 119677-01G B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 8. C. Install a lower Btu/Hr fireplace, if lower Btu/Hr size makes room unconfined. If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no additional fresh air ventilation. WARNING: If the area in which the heater may be operated does not meet the required volume for indoor combustion air, combustion and ventilation air shall be provided by one of the methods described in the National Fuel Gas Code, ANSI Z223.1/NFPA 54, the International Fuel Gas Code, or applicable local codes. VENTILATION AIR Ventilation Air From Inside Building This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two spaces (see options 1 and 2, Figure 2). You can also remove door into adjoining room (see option 3, Figure 2). Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Air for Combustion and Ventilation for required size of ventilation grills or ducts. 12" Ventilation Grills Into Adjoining Room, Option 1 Ventilation Grills Into Adjoining Room, Option 2 Or Remove Door into Adjoining Room, Option 3 12" Figure 2 - Ventilation Air from Inside Building www.desatech.com 7 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. These spaces include attics and crawl spaces. Follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, Air for Combustion and Ventilation for required size of ventilation grills or ducts. IMPORTANT: Do not provide openings for inlet or outlet air into attic if attic has a thermostat-controlled power vent. Heated air entering the attic will activate the power vent. Outlet Air Ventilated Attic Outlet Air To Attic To Crawl Space Inlet Air Inlet Air Ventilated Crawl Space Figure 3 - Ventilation Air from Outdoors Installation NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your primary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circulate the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source. WARNING: Before installing in a solid fuel burning fireplace, the chimney flue and firebox must be cleaned of soot, creosote, ashes and loose paint by a qualified chimney cleaner. Creosote will ignite if highly heated. A dirty chimney flue may create and distribute soot within the house. Inspect chimney and firebox flue for damage. If damaged, repair flue and firebox before operating heater. WARNING: A qualified service person must install heater. Follow all local codes. WARNING: Seal any fresh air vents or ash clean-out doors located on floor or wall of fireplace. If not, drafting may cause pilot outage or sooting. Use a heat-resistant sealant. Do not seal chimney flue damper. NOTICE: State or local codes may only allow operation of this appliance in a vented configuration. Check your state or local codes. 8 WARNING: Never install the heater • in a bedroom or bathroom unless installed as a vented appliance, see page 12 • in a recreational vehicle • in high traffic areas • in windy or drafty areas www.desatech.com 119677-01G Installation Continued CAUTION: This heater creates warm air currents. These currents move heat to wall surfaces 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 fluids, oil or kerosene lamps, etc.) in the air exist, may discolor walls or cause odors. Important: Vent-free heaters add moisture to the air. Although this is beneficial, installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture. See Air for Combustion and Ventilation, page 6. CHECK GAS TYPE Use the correct type of gas (natural or propane/LP). If your gas supply is not the correct gas type, do not install heater. Call dealer where you bought heater for proper type heater. WARNING: This appliance is for either natural gas or propane/LP gas but not both. Gas type is indicated on the rating plate Field conversion is not permitted. MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE MATERIALS Side Wall 16", Ceiling 42", Floor 5", Front 36" LOG SIZING REQUIREMENTS Minimum Firebox Size Front Rear* Log Size Height Depth Width Width 18" 17" 14" 20" 14" 24" 17" 14" 26" 18" 30" 21" 14" 32" 22" 36" 21" 14" 38" 27 1/2" *Measured at 14" depth Carefully follow the instructions below. This will ensure safe installation into a masonry, UL127-listed manufactured fireplace or listed vent-free firebox. Minimum Clearances For Side Combustible Material, Side Wall and Ceiling A. Clearances from the side of the fireplace cabinet to any combustible material and wall should follow diagram in Figure 4. Example: The face of a mantel, bookshelf, etc. is made of combustible material and protrudes 3 1/2" from the wall. This combustible material must be 4" from the side of the fireplace cabinet (see Figure 4). Note: When installing your gas logs into a manufactured firebox, follow firebox manufacturer’s instructions for minimum clearances to combustible materials. B. Clearances from top of fireplace opening to ceiling should not be less than 42". INSTALLATION AND CLEARANCES For Vent-Free Operation Example WARNING: Maintain the minimum clearances. If you can, provide greater clearances from floor, ceiling and adjoining wall. * *Minimum 16" from Side Wall Figure 4 - Minimum Clearance for Combustible to Wall 119677-01G www.desatech.com 9 Installation Continued NOTICE: Manual control heaters may be used as a vented product. If so, you must always run heater with chimney flue damper open. If running heater with damper open, noncombustible material above fireplace opening is not needed. Go to Installing Damper Clamp Accessory for Vented Operation, page 12. 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 information on this page. You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2" thick. With sheet metal, you must have noncombustible material behind it. Noncombustible material must extend at least 8" up (for all models). If noncombustible material is less than 12", you must install the fireplace hood accessory (24" and 30" Models Only). See Figure 5 for minimum clearances. If Using Mantel You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2" thick. With sheet metal, you must have noncombustible material behind it. Noncombustible material must extend at least 8" up (for all models). If noncombustible material is less than 12", you must install the fireplace hood accessory (24" and 30" Models Only). Even if noncombustible material is more than 12", you may need the hood accessory to deflect heat away from your mantel shelf. See Figure 5 and Figures 6 and 7, page 9, for minimum clearances. IMPORTANT: If you cannot meet these minimum clearances, you must operate heater with chimney flue damper open. Go to Installing Damper Clamp Accessory for Vented Operation, page 12. 10 Noncombustible Material Requirements for Distance (A) Safe Installation 12" or more Noncombustible material OK. Between 8" and 12" 24", 30" or 36" Models: Install fireplace hood accessory (GA6050, GA6052 or GA6053 see Accessories, page 30). 18" Model: Noncombustible material OK. Less than 8" Noncombustible material must be extended to at least 8". See Between 8" and 12", above. If you cannot extend material, you must operate heater with flue damper open. Heat Resistant Material (A) Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace Mantel Clearances In addition to meeting noncombustible material clearances, you must also meet required clearances between fireplace opening and mantel shelf. If you do not meet the clearances listed below, you will need a hood. Determining Minimum Mantel Clearance If you meet minimum clearance between mantel shelf and top of fireplace opening, a hood is not required (see Figure 6, page 11). Determining Minimum Mantel Clearance When Using a Hood If minimum clearances in Figure 6, page 11, are not met, you must have a hood. When using a hood there are still certain minimum mantel clearances required. Follow minimum clearances shown in Figure 7, page 11, when using hood. www.desatech.com 119677-01G Installation Continued Mantel Shelf NOTICE: Surface temperatures of adjacent walls and mantels become hot during operation. Walls and mantels above the firebox may become hot to the touch. If installed properly, these temperatures meet the requirement of the national product standard. Follow all minimum clearances shown in this manual. 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 Mantel Shelf 10" 8" 6" 2 1/2" 12" 10" Underside of Mantel Shelf 8" 6" 2 1/2" Minimum Noncombustible Material All minimum distances are in inches 8" Min. Hood (GA6050, GA6052, or GA6053) 12" 15" Distances to Underside of Mantel Log Sets 18", 24", 30" & 36" Models Top of Fireplace Opening 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" above the combustible flooring (see Figure 9). Underside of Mantel Shelf Log Set 24"/30"/36" Models 14" 17" 19" 20" 8" 18" Model Top of Fireplace Opening Minimum Distances to Noncombustible Underside of Material Height Mantel Combustible Material 14" Min. (A) 12" 20" Figure 7 - Minimum Mantel Clearances When Using Hood All minimum distances are in inches Minimum Noncombustible Material 18" 18" 20" 22" 24" Noncombustible Material Figure 8 - Minimum Fireplace Clearances If Installed at Floor Level Figure 6 - Minimum Mantel Clearances Without Using Hood Hearth Combustible Material 5" Min. Figure 9 - Minimum Fireplace Clearances Above Combustible Flooring 119677-01G www.desatech.com 11 Installation Continued INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION Note: When used as a vented heater, appliance must be installed only in a solid-fuel burning fireplace with a working flue and constructed of noncombustible material. For Massachusetts Residents Only: Installation of this gas log set as a vented appliance in the Commonwealth of Massachusetts requires the damper be permanently removed or welded in the fully open position. If your heater is a manually-controlled model, you may use this heater as a vented product. There are three reasons for operating your heater in the vented mode. 1. The fireplace does not meet the clearance to combustibles requirements for ventfree operation. 2. State or local codes do not permit ventfree operation. 3. You prefer vented operation. If reasons number 1 or 2 above apply to you, you must permanently open chimney flue damper. You must install the damper clamp accessory (to order, see Accessories, page 30). This will insure vented operation (see Figure 10). The damper clamp will keep damper open. Installation instructions are included with clamp accessory. See charts for minimum permanent flue opening you must provide. Attach damper clamp so the minimum permanent flue opening will be maintained at all times. Damper Damper Clamp Masonry Fireplace Minimum Permanent Flue Opening 39 sq. inches 29 sq. inches INSTALLING HEATER BASE ASSEMBLY WARNING: You must secure this heater to fireplace floor. If not, heater will move when you adjust controls. Moving heater may cause a gas leak. WARNING: If installing in a sunken fireplace, special care is needed. You must raise the fireplace floor to allow access to heater control panel. This will insure adequate air flow and guard against sooting and controls being damaged. Raise fireplace floor with noncombustible material. Make sure material is secure. IMPORTANT: Make sure the heater burners are level. If heater is not level, heater will not work properly. Damper Manufactured Fireplace Figure 10 - Attaching Damper Clamp 12 Chimney Height 6' to 15' 15' to 30' CAUTION: Do not pick up heater base assembly by burners. This could damage heater. Only handle base assembly by grates. Damper Clamp Damper Area of Various Standard Round Flues Diameter Area 5" 20 sq. inches 6" 29 sq. inches 7" 39 sq. inches 8" 51 sq. inches Installation Items Needed • hardware package (provided with heater) • approved flexible gas hose and fittings (not provided) (if allowed by local codes) • sealant (resistant to propane/LP gas, not provided) • electric drill with 3/16” masonry drill bit www.desatech.com 119677-01G Installation Continued 1. Apply pipe joint sealant lightly to male threads of gas fitting (provided). Connect approved flexible gas hose to gas regulator of heater (see Figure 11). IMPORTANT: Hold gas regulator with wrench when connecting flexible gas hose. 2. Position heater base assembly in fireplace. 3. Mark screw locations through holes in front panel of base (see Figure 12). If installing in a brick-bottom fireplace, mark screw locations in mortar joint of bricks. 4. Remove heater base from fireplace. 5. Drill holes at marked locations using 3/16" drill bit. 6. Attach base, through holes in front panel of base, to fireplace floor using masonry screws provided in hardware package (see Figure 12). 7. Connect to gas supply. See Connecting To Gas Supply. Heater Gas Regulator Flexible Gas Hose (if allowed by local codes) Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator Masonry Screw Figure 12 - Attaching Base to Fireplace Floor CONNECTING TO GAS SUPPLY WARNING: This appliance requires a 1/2" NPT (National Pipe Thread) inlet connection to the pressure regulator. 119677-01G WARNING: A qualified service person must connect heater to gas supply. Follow all local codes. CAUTION: Never connect propane/LP fireplace directly to the propane/LP supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and propane/LP supply. WARNING: Never connect natural gas fireplace to private (non-utility) gas wells. This gas is commonly known as wellhead gas. Installation Items Needed Before installing heater, make sure you have the items listed below. • external regulator (supplied by installer) • piping (check local codes) • sealant (resistant to propane/LP gas) • equipment shutoff valve * • test gauge connection * • sediment trap • tee joint • pipe wrench • approved flexible gas line with gas connector (if allowed by local codes) (not provided) * A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certified equipment shutoff valve from your dealer. For propane/LP units, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11" and 14" of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 13, page 14. Pointing the vent down protects it from freezing rain or sleet. www.desatech.com 13 Installation Continued CAUTION: Use only new, black iron or steel pipe. Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of 1/2" diameter or greater to allow proper gas volume to heater. If pipe is too small, undue loss of volume will occur. Installation must include an equipment shutoff valve, union and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 14). IMPORTANT: Install equipment shutoff valve in an accessible location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance. Check your building codes for any special requirements for locating equipment shutoff valve to fireplaces. Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves. 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. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly. CAUTION: Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings. 14 Propane/LP Supply Tank External Regulator with Vent Pointing Down Figure 13 - External Regulator With Vent Pointing Down Propane/LP From External Regulator (11" W.C.** to 14" W.C. Pressure) CSA Design-Certified Equipment Shutoff Valve With 1/8" NPT Tap* Approved Flexible Gas Hose (if allowed by local codes) Natural From Gas 3" Minimum Meter (5" W.C.** Gas to 10.5" Tee Cap Pipe Regulator Joint Nipple W.C. Pressure) Sediment Trap Figure 14 - Gas Connection * Purchase the optional CSA design-certified equipment shutoff valve from your dealer. ** Minimum inlet pressure for purpose of input adjustment. CHECKING GAS CONNECTIONS 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 noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once. www.desatech.com 119677-01G Installation Continued CAUTION: Make sure external regulator has been installed between propane/LP supply and heater. See guidelines under Connecting to Gas Supply, page 13. Pressure Testing Gas Supply Piping System Test Pressures In Excess Of 1/2 PSIG (3.5 kPa) 1. Disconnect appliance with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig will damage heater regulator. 2. Cap off open end of gas pipe where equipment shutoff valve was connected. 3. 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. 4. Check all joints of gas supply piping system. Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. 5. Correct all leaks at once. 6. Reconnect heater and equipment shutoff valve to gas supply. Check reconnected fittings for leaks. Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa) 1. Close equipment shutoff valve (see Figure 15). 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. Equipment Shutoff Valve Open Closed Figure 15 - Equipment Shutoff Valve 119677-01G 3. Check all joints from gas meter to equipment shutoff valve for natural gas or propane/LP supply to equipment shutoff valve for propane/LP (see Figure 16 or 17). Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. 4. Correct all leaks at once. Propane/LP Supply Tank Equipment Shutoff Valve Gas Valve Location Figure 16 - Checking Gas Joints (Propane/LP Only) Equipment Shutoff Valve Gas Meter Gas Valve Location Figure 17 - Checking Gas Joints (Natural Gas Only) Pressure Testing Heater Gas Connections 1. Open equipment shutoff valve (see Figure 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. 4. Check all joints from equipment shutoff valve to gas valve (see Figure 16 or 17). Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. 5. Correct all leaks at once. 6. Light heater (see Operation, page 17). Check all other internal joints for leaks. 7. Turn off heater (see To Turn Off Gas to Appliance, page 18). www.desatech.com 15 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. VUL36 Model Brackets If installing a VUL36 model, attach log support brackets before installing logs. 1. Install left bracket to left side of chassis using 2 screws provided (see Figure 18). 2. Install right bracket to right front of chassis using 2 screws provided (see Figure 18). This bracket will also be used as remote control bracket if remote is installed. Chassis 5. Place middle right log over front right and bottom logs as shown in Figure 20. Be sure hole in middle right log seats over pin in bottom log. 6. Place middle left log over front left and bottom logs as show in Figure 19. Be sure hole in middle left log seats over pin in front left log. 7. For VUL36NV/PV models, the front right and left logs are longer and are supported with brackets on each end (see Figure 20). Place the left and right small front logs under the left bracket and beside the right bracket. Front Left Log Left Log Support Bracket Grate Prongs Right Log Support Bracket Right Front of Chassis Figure 18 - Installing Log Support Brackets Log Installation (All Models) It is very important to install these logs exactly as instructed. Do not modify logs. Only use logs supplied with heater. 1. Place bottom log in center of the base assembly as shown in Figure 19. 2. Rest rear log in back corner sections of base assembly as shown in Figure 19. Make sure log is completely vertical and not leaning in toward burner where the flame will touch the log. 3. Position front right log against right side of grate prongs (see Figure 19). 4. Position front left log against left side of grate prongs (see Figure 19). 16 Base Assembly Rear Log Bottom Log Front Right Log Figure 19 - Installing 18"/24" Log Sets Middle Right Log Middle Left Log Pin on Front Left Log Bottom Log Figure 20 - Installing 36" Log Sets www.desatech.com 119677-01G Installation Continued 8. For VUL36NV/PV models, position left and right control cover logs as shown in Figure 21. These may be placed as desired to hide controls. Do not place these logs on heater base or on other logs. Left Small Bracket Front Log VUL18/24/30 MODELS Left Control Cover Log Bracket Right Control Cover Log Right Small Front Log Figure 21 - Installing VUL36 Model Control Cover Logs VUL36 MODELS Figure 22 - Correct Log Placement Operation for your safety read before lighting WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly. B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor. 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 neighbor’s phone. Follow the gas supplier’s instructions. • If you cannot reach your gas supplier, call the fire department. 119677-01G C. Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, don’t try to repair it, call a qualified service technician or gas supplier. Force or attempted repair may result in a fire or explosion. D. Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water. lighting instructions WARNING: • If fireplace has glass doors, never operate this heater with glass doors closed. If you operate heater with doors closed, heat buildup inside fireplace will cause glass to burst. Make sure there are no obstructions across openings of fireplace. • You must operate this heater with a fireplace screen in place. Make sure fireplace screen is closed before running heater. www.desatech.com 17 OperatiON Continued NOTICE: During initial operation of new heater, burning logs will give off a paper-burning smell. Orange flame will also be present. Open damper or window to vent smell. This will only last a few hours. Note: Home owners generally prefer to operate their heater with the chimney damper closed. This will put all the heat into the room. However, there may be times you will desire the full flames of the High heat setting but will find the heat output excessive. You can open the chimney damper (if you have one) fully or partially to release some of the heat. 7. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. • If control knob does not pop out when released, turn off gas supply and contact a qualified service person or gas supplier for repairs. Note: If pilot goes out, repeat steps 3 through 7. 8. Push in and turn control knob counterclockwise to the HI position. Both burners should light. Set control knob to desired setting. 9. To leave pilot lit and shut off burners only: turn control knob clockwise to the HI position. Press in and turn control knob clockwise to the PILOT position. WARNING: Damper handle will be hot if heater has been running. 1. STOP! Read the safety information on page 17. 2. Make sure equipment shutoff valve is fully open. 3. Press in and turn control knob clockwise to the OFF position. 4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information, page 17. If you don’t smell gas, go to the next step. 5. Press in control knob and turn counterclockwise to the PILOT position. Keep control knob pressed in for five (5) seconds (see Figure 23). Note: You may be running this heater for the first time after hooking up to gas supply. If so, the control knob may need to be pressed in for 30 seconds or more. This will allow air to bleed from the gas system. 6. With control knob pressed in, press and release ignitor button. This will light pilot. The pilot is attached to the front burner. If needed, keep pressing ignitor button until pilot lights. Note: If pilot does not light, contact a qualified service person or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual Lighting Procedure, page 19. 18 ON PILOT OFF Electronic Ignitor Button Control Knob Figure 23 - Control Knob and Ignitor Button Location Ignitor Electrode Pilot Burner Thermocouple Figure 24 - Pilot variable control operation The variable control valve can be set to any heat setting and flame height desired, by simply turning the control knob until that setting is attained. Even the lowest setting provides realistic flames and glowing embers from two burners. Selecting higher settings produces greater heat output. This results in increased heating comfort. WARNING: Do not operate heater between locked positions. CAUTION: Do not try to adjust heating levels by using the equipment shutoff valve. www.desatech.com 119677-01G OperatiON Continued to turn off gas to appliance manual lighting procedure 1. Press in and turn control knob clockwise to the HI position. 2. Turn the control knob clockwise to the PILOT position. 3. Press in control knob and turn clockwise to the OFF position. 4. Close equipment shutoff valve (see Figure 15), page 15. 1. Follow steps 1 through 5 under Lighting Instructions, page 18. 2. Press control knob and light pilot with match. 3. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Now follow step 8 under Lighting Instructions, page 18. Inspecting Burners Check pilot flame pattern and burner flame patterns often. PILOT FLAME PATTERN Figure 25 shows a correct pilot flame pattern. Figure 26 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down. If pilot flame pattern is incorrect, as shown in Figure 26 • turn heater off (see To Turn Off Gas to Appliance • see Troubleshooting, page 21 Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color. Thermocouple Pilot Burner WARNING: If yellow tipping occurs, your heater could produce increased levels of carbon monoxide. If front burner flame pattern shows yellow tipping, follow instructions at bottom of this page. Yellow flame on rear burner is normal. NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles are burned by heater, causing brief patches of orange flame. If front burner flame pattern is incorrect, as shown in Figure 28 • turn heater off (see To Turn Off Gas to Appliance) • see Troubleshooting, page 21 Thermocouple Figure 25 - Correct Pilot Flame Pattern Pilot Burner Thermocouple Thermocouple Figure 26 - Incorrect Pilot Flame Pattern Figure 27 - Correct Front Burner Flame Pattern Yellow Tipping At Top of Blue Flame FRONT BURNER FLAME PATTERN Figure 27 shows correct front burner flame pattern. Figure 28 shows incorrect front burner flame pattern. The incorrect burner flame pattern shows yellow tipping at top of blue flame. 119677-01G Figure 28 - Incorrect Front Burner Flame Pattern www.desatech.com 19 Cleaning and Maintenance WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burners and circulating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualified service person. Heater may need more frequent cleaning due to excessive lint from carpeting, pet hair, bedding material, etc. WARNING: Failure to keep the primary air opening(s) of the burner(s) clean may result in sooting and property damage. Burner Injector Holder and Pilot Air Inlet Hole The primary air inlet holes allow the proper amount of air to mix with the gas. This provides a clean burning flame. Keep these holes clear of dust, dirt, lint and pet hair. Clean these air inlet holes prior to each heating season. Blocked air holes will create soot. We recommend that you clean the unit every three months during operation and have heater inspected yearly by a qualified service person. We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt. To clean these parts we recommend using compressed air no greater than 30 PSI. Your local computer store, hardware store or home center may carry compressed air in a can. If using compressed air in a can, please follow the directions on the can. If you don’t follow directions on the can, you could damage the pilot assembly. 1. Shut off unit, including pilot. Allow unit to cool for at least thirty minutes. 2. Inspect burner, pilot and primary air inlet holes on injector holder for dust and dirt (see Figure 29). 3. Blow air through the ports/slots and holes in the burner. 20 4. Check injector holder located at the end of the burner tube again. Remove any large particles of dust, dirt, lint or pet hair with a soft cloth or vacuum cleaner nozzle. 5. Blow air into the primary air holes on the injector holder. 6. In case any large clumps of dust have now been pushed into the burner repeat steps 3 and 4. Clean pilot assembly also. A yellow tip on the pilot flame indicates dust and dirt in the pilot assembly. There is a small pilot air inlet hole about 2" from where the pilot flame comes out of the pilot assembly (see Figure 30). With the unit off, lightly blow air through the air inlet hole. You may blow through a drinking straw if compressed air is not available. Injector Holder Ports/Slots Burner Tube Primary Air Inlet Holes Figure 29 - Injector Holder On Outlet Burner Tube Pilot Air Inlet Hole Pilot Assembly Figure 30 - Pilot Inlet Air Hole (Your pilot may vary from pilot shown) LOGS • If you remove logs for cleaning, refer to Installing Logs, page 16, to properly replace logs. • Replace log(s) if broken or chipped (dimesized or larger). main burner Periodically inspect all burner flame holes with the heater running. All slotted burner flame holes should be open with yellow flame present. All round burner flame holes should be open with a small blue flame present. Some burner flame holes may become blocked by debris or rust, with no flame present. If so, turn off heater and let cool. Remove blockage, blocked burner flame holes will create soot. www.desatech.com 119677-01G 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 ignitor button is pressed, there is no spark at ODS/pilot 1. Ignitor electrode not connected to ignitor cable 2. Ignitor cable pinched or wet 1. Reconnect ignitor cable 3. Broken ignitor cable 4. Bad ignitor 5. Ignitor electrode positioned wrong 6. Ignitor electrode broken 7. Battery not installed, battery power low or battery not installed correctly (electronic ignition models only) When ignitor button is pressed, there is spark at ODS/pilot but no ignition 1. Gas supply turned off or equipment shutoff valve closed 2. Control knob not in PILOT position 3. Control knob not pressed in while in PILOT position 4. Air in gas lines when installed 5. Depleted gas supply (propane/LP only) 6. ODS/pilot is clogged 7. Gas regulator setting is not correct 119677-01G www.desatech.com 2. Free ignitor cable if pinched by any metal or tubing. Keep ignitor cable dry 3. Replace ignitor cable 4. Replace ignitor 5. Replace pilot assembly 6. Replace pilot assembly 7. Install new alkaline battery in electronic ignitor. Verify battery is installed correctly 1. Turn on gas supply or open equipment shutoff valve 2. Turn control knob to PILOT position 3. Press in control knob while in PILOT position 4. Continue holding down control knob. Repeat igniting operation until air is removed 5. Contact local propane/LP gas company 6. Clean ODS/pilot (see Cleaning and Maintenance, page 20) or replace ODS/pilot assembly 7. Replace gas regulator 21 Troubleshooting Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame goes out when control knob is released 1. Control knob not fully pressed in 2. Control knob not pressed in long enough 1. Press in control knob fully 3. Equipment shutoff valve not fully open 4. Pilot flame not touching thermocouple, which allows thermocouple to cool, causing pilot flame to go out. This problem could be caused by one or both of the following: A) Low gas pressure B) Dirty or partially clogged ODS/pilot 5. Thermocouple connection loose at control valve 6. Thermocouple damaged 7. Control valve damaged One or both burners do not light after ODS/pilot is lit 1. Inlet gas pressure is too low 2. Burner orifice(s) clogged 3. Mislocated crossover tube Delayed ignition of one or both burners 1. Manifold pressure is too low 2. Burner orifice(s) clogged 3. Mislocated crossover tube Burner backfiring during combustion 22 1. Burner orifice is clogged or damaged 2. Wait one minute for safety interlock system to reset. Repeat ignition operation 3. Fully open equipment shutoff valve 4. A) Contact local natural or propane/LP gas company B) Clean ODS/pilot (see Cleaning and Maintenance, page 20) or replace ODS/ pilot assembly 5. Hand tighten until snug, then tighten 1/4 turn more 6. Replace pilot assembly 7. Replace control valve 1. Contact local natural or propane/LP gas company 2. C l e a n b u r n e r ( s ) ( s e e Cleaning and Maintenance, page 20) or replace burner orifice(s) 3. Contact qualified service person 1. Contact local natural or propane/LP gas company 2. C l e a n b u r n e r ( s ) ( s e e Cleaning and Maintenance, page 20) or replace burner orifice(s) 3. Contact qualified service person 2. Damaged burner 3. Gas regulator defective 1. Clean burner (see Cleaning and Maintenance, page 20) or replace burner orifice 2. Replace damaged burner 3. Replace gas regulator www.desatech.com 119677-01G Troubleshooting Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Slight smoke or odor during initial operation 1. Not enough air 1. Check burner(s) for dirt and debris. If found, clean burner(s) (see Cleaning and Maintenance, page 20) 2. Replace gas regulator 2. Gas regulator defective Yellow flame in front burner during burner combustion 1. Residues from manufacturing processes and logs curing 1. Problem will stop after a few hours of operation Heater produces a whistling noise when burners are lit 1. Turning control knob to HI position when burners are cold 2. Air in gas line 1. Turn control knob to LO position and let warm up for a minute 2. Operate burners until air is removed from line. Have gas line checked by local natural or propane/LP gas company 3. Observe minimum installation clearances (see pages 9 through 11) 4. Clean burners (see Cleaning and Maintenance , page 20) or replace burner orifice(s) 3. Air passageways on heater blocked 4. Dirty or partially clogged burner orifice(s) White powder residue forming within burner box or on adjacent walls or furniture 1. When heated, vapors from furniture polish, wax, carpet cleaners, etc. may turn into white powder residue 1. Turn heater off when using furniture polish, wax, carpet cleaners or similar products Moisture/condensation noticed on windows 1. Not enough combustion/ ventilation air 1. Refer to Air for Combustion and Ventilation requirements (page 6) Heater produces a clicking/ ticking noise just after burners are lit or shut off 1. Metal expanding while heating or contracting while cooling 1. This is normal with most heaters. If noise is excessive, contact qualified service person 119677-01G www.desatech.com 23 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. Follow the gas supplier’s instructions. • If you cannot reach your gas supplier, call the fire department. IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These fumes may mix with combustion air and create odors. These odors will disappear over time. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Heater produces unwanted odors 1. Heater burning vapors from paint, hair spray, glues, cleaners, chemicals, new carpet, etc. (See IMPORTANT statement above) 2. Low fuel supply (propane/ LP only) 3. Gas leak. See Warning statement at top of page 1. Open window to ventilate room. Stop using odor causing products while heater is running 1. Not enough fresh air is available 2. Low line pressure 1. Open window and/or door for ventilation 2. Contact local natural or propane/LP gas company 3. C l e a n O D S / p i l o t ( s e e Cleaning and Maintenance, page 20) Heater shuts off in use (ODS operates) 3. O D S / p i l o t i s p a r t i a l l y clogged Gas odor even when control knob is in OFF position 1. Gas leak. See Warning statement at top of page 2. Control valve or gas control defective Gas odor during combustion 24 1. Foreign matter between control valve and burner 2. Gas leak. See Warning statement at top of page www.desatech.com 2. Refill supply tank (propane/ LP only) 3. Locate and correct all leaks (see Checking Gas Connections, page 14) 1. Locate and correct all leaks (see Checking Gas Connections, page 14) 2. Replace control valve or gas control 1. Take apart gas tubing and remove foreign matter 2. Locate and correct all leaks (see Checking Gas Connections, page 14) 119677-01G Specifications VUL18PV VUL24PV, vul30PV and vul36pv • • • • • • • • • • Rating (Variable): 19,000/26,000 Btu/Hr Type Gas: Propane/LP Ignition: Electronic Manifold Pressure: 7.9" W.C. Inlet Gas Pressure (in. of water): Max - 14" W.C., Min - 11" W.C*. Rating (Variable): 24,000/35,000 Btu/Hr Type Gas: Propane/LP Ignition: Electronic Manifold Pressure: 7.9" W.C. Inlet Gas Pressure (in. of water): Max - 14" W.C., Min - 11" W.C.* VUL18Nv VUL24NV, vul30Nv and vul36nv • • • • • • • • • • Rating (Variable): 22,000/29,000 Btu/Hr Type Gas: Natural Ignition: Electronic Manifold Pressure: 3.4" W.C. Inlet Gas Pressure (in. of water): Max - 10.5" W.C., Min - 5" W.C.* Rating (Variable): 24,000/35,000 Btu/Hr Type Gas: Natural Ignition: Electronic Manifold Pressure: 3.4" W.C. Inlet Gas Pressure (in. of water): Max - 10.5" W.C., Min - 5" W.C.* *For purpose of input adjustment Replacement Parts Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty. Usually, we will ask you to return the part to the factory. Parts Under Warranty Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA Heating Products at 1-866-672-6040 for referral information. When calling DESA Heating Products, have ready • model number of your heater • the replacement part number Contact authorized dealers of this product. If they can’t supply original replacement part(s), call DESA Heating Products’ Technical Service Department at 1-866-672-6040. When calling DESA Heating Products, have ready • your name • your address • model and serial numbers of your heater • how heater was malfunctioning • type of gas used (propane/LP or natural gas) • purchase date Parts Not Under Warranty Service Hints Technical Service When Gas Pressure Is Too Low • pilot will not stay lit • burners will have delayed ignition • heater will not produce specified heat • propane/LP gas supply may be low You may feel your gas pressure is too low. If so, contact your local propane/LP or natural gas supplier. You may have further questions about installation, operation or troubleshooting. If so, contact DESA Heating Products’ 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 Products’ technical services web site at www.desatech.com. 119677-01G www.desatech.com 25 Parts Models VUL18NV, VUL18PV, VUL24NV, VUL24PV, VUL30NV, VUL30PV, vul36nv, vul36pv 8 9 3 31 8 4 6 13 5 8 11 7 23 8 10 2 33 2 1 30 8 12 29 15 28 22 23 8 25 26 19 18 32 16 24 21 20 26 17 www.desatech.com 119677-01G PARTS VUL Key No. Part No. 1 ** 2 123651-01 3 112465-01 112465-02 4 112466-01 112466-02 5 PP229 107486-01 6 112713-01 112713-03 7 098249-01 8 M11084-26 9 112782-01 112782-02 112782-03 10 M11084-38 11 101004-04 101004-02 101004-10 12 101004-04 101004-10 101004-22 101004-06 13 107634-01 14 098304-01 15 117934-01 117934-02 16 099387-08 17 098508-01 18 119583-05 119583-06 19 098325-01 20 098462-03 21 098354-01 22 119676-01 23 117944-01 24 117943-01 25 098276-01 26 M11084-37 27 098271-12 28 098867-09 098867-10 29 117935-01 30 119701-01 31 121120-01 32 112717-02CK 33 120761-01CK Description Ramp Burner Assembly • Electronic Ignitor • Ramp Front Burner • Ramp Front Burner Ramp Rear Burner • Ramp Rear Burner O.D.S. Pilot, Natural • O.D.S. Pilot, Propane/LP Pilot Bracket, Natural • Pilot Bracket, Natural Nut, ODS • Screw • Air Deflector Bracket • Air Deflector Bracket Air Deflector Bracket Screw • Rear Burner Injector, Natural • Rear Burner Injector, Propane/LP Rear Burner Injector, Propane/LP Front Burner Injector, Natural • Front Burner Injector, Propane/LP Front Burner Injector, Natural Front Burner Injector, Propane/LP NG Conversion Plate • Screw • Inlet Tube • Inlet Tube Pilot Tube • Valve Retainer Nut • Control Valve, Natural • Control Valve, Propane/LP Roll Pin • Control Rod • Control Knob • Valve Bracket • Manual Valve Bracket • Control Rod Bracket • Plug, 1/8" NPTF Hex-Head • Screw • Ignitor Cable • Gas Regulator, Natural • Gas Regulator, Propane/LP Burner Tube • Log Support Bracket • Air Shield Remote Bracket Log Bracket PARTS AVAILABLE NOT SHOWN 100563-01 Warning Plate • 101054-01 Lighting Instruction Plate • 101055-02 Lighting Instruction Plate 101137-02 Hardware Kit • GA6060 Lava Rock • 120466-01 Flextube with Fitting • ** Not a field replaceable part. 119677-01G www.desatech.com VUL 18N V 18P V VUL 24/3 0NV VUL 24/3 0PV VUL 36N V VUL 36P V This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Qty. 1 1 1 1 1 1 1 1 1 1 2 15 1 1 1 2 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 27 Parts This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. 3 4 5 2 6 1 PART NUMBER 28 KEY VUL18NV NO. VUL18PV VUL24NV VUL24PV VUL30NV VUL30PV DESCRIPTION 1 2 3 4 5 6 121699-11 121699-10 121699-08 121699-09 121699-07 121699-12 121699-17 121699-16 121699-14 121699-15 121699-13 121699-18 Front Right Log Front Left Log Middle Right Log Middle Left Log Bottom Log Rear Log 121699-05 121699-04 121699-02 121699-03 121699-01 121699-06 www.desatech.com QTY 1 1 1 1 1 1 119677-01G Parts Models VUL36NV and vul36pv Log Set This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. 3 6 4 1 7 2 9 5 10 8 KEY NO. 1 2 3 4 5 6 7 8 9 10 119677-01G PART NO. DESCRIPTION 121699-07 121699-14 121699-15 121699-20 121699-21 121699-22 121699-23 121699-24 121699-25 121699-26 Bottom Log Middle Right Log Middle Left Log Front Left Log Front Right Log Back Log Left Small Front Log Right Small Front Log Left Control Cover Log Right Control Cover Log www.desatech.com QTY 1 1 1 1 1 1 1 1 1 1 29 Accessories Purchase these heater accessories from your local dealer. If they can not supply these accessories, call DESA Heating Products at 1-866-672-6040 for referral information. You can also write to the address listed on the back page of this manual. FB32C (CIRCULATING), FB32NC (NON-CIRCULATING) SERIES Fireboxes For 18" and 24" log models. FB36CA, FB42C SERIES CIRCULATING), FB36NCA, FB42NC SERIES fireboxes (NON-CIRCULATING) For all log models. DAMPER CLAMP - GA6080 For all models. Permanently opens chimney flue damper for vented operation. FIREPLACE HOOD LAVA ROCK - GA6060 Black - GA6050 Brass - GA6052 Antique Brass - GA6053 For all models. Helps deflect heat away from mantel or wall above fireplace. Fits openings 28" to 48" wide. For all models. Order when additional rock is desired. VENT-FREE LOGMATE® FIREBOXES VTFB32, VTFB36, VTFB42 CLEANING KIT - CCK For all models. Your vent-free gas appliance requires regular cleaning and maintenance to prevent performance problems. This kit gives you the tools and instructions to make it easy to clean all critical areas of your appliance. For 32", 36" and 42" models. Circulating fireboxes feature louvers and an optional blower. Non-circulating, smooth face models are ideal for custom trim applications such as stone or marble. 30 www.desatech.com 119677-01G NOTES _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ _____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ 119677-01G www.desatech.com 31 Warranty KEEP THIS WARRANTY Model (located on product or identification tag)______________________________ Serial No. (located on product or identification tag)___________________________ Date Purchased ___________________________ Keep receipt for warranty verification. DESA HEATING, LLC LIMITED WARRANTIES New Products Standard Warranty: DESA Heating, LLC warrants this new product and any parts thereof to be free from defects in material and workmanship for a period of four (4) years from the date of first purchase from an authorized dealer provided the product has been installed, maintained and operated in accordance with DESA Heating, LLC’s warnings and instructions. For products purchased for commercial, industrial or rental usage, this warranty is limited to 90 days from the date of first purchase. Factory Reconditioned Products Limited Warranty: DESA Heating, LLC warrants factory reconditioned products and any parts thereof to be free from defects in material and workmanship for 30 days from the date of first purchase from an authorized dealer provided the product has been installed, maintained and operated in accordance with DESA Heating, LLC’s warnings and instructions. Terms Common to All Warranties The following terms apply to all of the above warranties: Always specify model number and serial number when contacting the manufacturer. To make a claim under this warranty the bill of sale or other proof of purchase must be presented. This warranty is extended only to the original retail purchaser when purchased from an authorized dealer, and only when installed by a qualified installer in accordance with all local codes and instructions furnished with this product. This warranty covers the cost of part(s) required to restore this product to proper operating condition and an allowance for labor when provided by a DESA Heating, LLC Authorized Service Center or a provider approved by DESA Heating, LLC. Warranty parts must be obtained through authorized dealers of this product and/or DESA Heating, LLC who will provide original factory replacement parts. Failure to use original factory replacement parts voids this warranty. Travel, handling, transportation, diagnostic, material, labor and incidental costs associated with warranty repairs, unless expressly covered by this warranty, are not reimbursable under this warranty and are the responsibility of the owner. Excluded from this warranty are products or parts that fail or become damaged due to misuse, accidents, improper installation, lack of proper maintenance, tampering, or alteration(s). This is DESA Heating, LLC’s exclusive warranty, and to the full extent allowed by law; this express warranty excludes any and all other warranties, express or implied, written or verbal and limits the duration of any and all implied warranties, including warranties of merchantability and fitness for a particular purpose to four (4) years on new products and 30 days on factory reconditioned products from the date of first purchase. DESA Heating, LLC makes no other warranties regarding this product. DESA Heating, LLC’s liability is limited to the purchase price of the product, and DESA Heating, LLC shall not be liable for any other damages whatsoever under any circumstances including indirect, incidental, or consequential damages. Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. For information about this warranty contact: 119677 01 NOT A UPC DESA Heating, LLC 2701 Industrial Drive Bowling Green, KY 42101 www.desatech.com 1-866-672-6040 119677-01 Rev. G 09/08
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