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UNVENTED (VENT-FREE)
NATURAL GAS LOG HEATER
ALSO DESIGN-CERTIFIED AS A VENTED DECORATIVE APPLIANCE
OWNER’S OPERATION AND INSTALLATION MANUAL
VFN18MV,
VFN24MV
VFN30MV
LO
PILOT
OFF
Variable Manually- HI
Controlled
™
EMBER MASTER
WARNING: Improper installation, ad-
WARNING: If the information in this
justment, alteration, service, or main-
manual is not followed exactly, a fire or
tenance can cause injury or property
explosion may result causing property
damage. Refer to this manual for cor-
damage
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER 4. Before installing in a solid fuel burn- SAFETY Due to high temperatures, the ing fireplace, the chimney flue and fire- appliance should be located out INFORMATION box must be cleaned of soot, creosote, of traffic and away from furniture ashes, and loose paint by a qualified and draperies. chimney cleaner. Creosote will ignite WARNINGS if highly heated. Inspect chimney flue Do not place clothing or other for damage. If dam
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OWNERS MANUAL SAFETY LOCAL CODES UNPACKING INFORMATION Install and use heater with care. Follow all CAUTION: Do not remove the local codes. In the absence of local codes, use Continued metal data plates attached to the the latest edition of The National Fuel Gas heater base assembly. The data 13. Do not operate heater if any log is bro- Code, ANS Z223.1, also known as NFPA 54*. plates contain important warranty ken. Do not operate heater if a log is *Available from: information. chipped (dime-
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER Confined and Unconfined Space PROVIDING ADEQUATE AIR FOR VENTILATION The National Fuel Gas Code, ANS Z223.1 COMBUSTION AND defines a confined space as a space whose The following are excerpts from National VENTILATION volume is less than 50 cubic feet per 1,000 Fuel Gas Code, NFPA 54/ANS Z223.1, Sec- 3 Btu per hour (4.8 m per kw) of the aggre- tion 5.3, Air for Combustion and Ventilation. gate input rating of all appliances ins
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OWNERS MANUAL AIR FOR COMBUSTION AND VENTILATION Continued 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 heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms. 1. Determine the volume of the space (length x width x height). Length x Width x Height = __________________ cu
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER AIR FOR 12" COMBUSTION AND VENTILATION Ventilation Continued Ventilation Grills Grills Into Adjoining Room, Into Adjoining VENTILATION AIR Or Option 2 Room, Remove Ventilation Air From Inside Option 1 Door into Building Adjoining This fresh air would come from an adjoining Room, unconfined space. When ventilating to an Option adjoining unconfined space, you must pro- 3 vide two permanent openings: one within 12" of the ceili
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OWNERS MANUAL INSTALLATION LOG SIZING REQUIREMENTS WARNING: Never install the Minimum Firebox Size heater NOTICE: This heater is intended • in a bedroom or bathroom un- Log Front Rear* for use as supplemental heat. Use less installed as a vented ap- Size Height Depth Width Width this heater along with your pri- pliance, see page 10 18" 17" 14" 20" 14" mary heating system. Do not in- • in a recreational vehicle 24" 17" 14" 26" 18" stall this heater as your primary • where curtains, furniture, 3
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER IMPORTANT: If you cannot meet these If Using Mantel INSTALLATION minimum clearances, you must operate You must have noncombustible material(s) Continued heater with chimney flue damper open. Go above the fireplace opening. Noncombus- to Installing Damper Clamp Accessory for NOTICE: Manual control heaters tible materials (such as slate, marble, tile, Vented Operation, page 10. may be used as a vented product. etc.) must be at le
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OWNERS MANUAL Mantel Shelf INSTALLATION 10" Underside of Continued 8" Mantel Shelf 6" MANTEL CLEARANCES 1 2 /2" In addition to meeting noncombustible mate- rial clearances, you must also meet required All minimum distances are clearances between fireplace opening and in inches mantel shelf. If you do not meet the clear- Minimum Non- ances listed below, you will need a hood. (A) Combustible Log Set Material 12" 18" 20" 22" 24" 24" Models 24" and 30" Models Determining Minimum Mantel 8" 14" 17
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER Damper Clamp INSTALLATION Continued INSTALLING DAMPER CLAMP ACCESSORY FOR Damper Damper VENTED OPERATION Clamp Damper Note: When used as a vented heater, appli- Damper ance must be installed only in a solid-fuel burning fireplace with a working flue and constructed of noncombustible material. If your heater is a manually-controlled model, you may use this heater as a vented Masonry Fireplace Manufactured Fireplace product. Ther
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OWNERS MANUAL IMPORTANT: Install an equipment shutoff Installation Items Needed INSTALLATION valve in an accessible location. The equip- Before installing heater, make sure you have ment shutoff valve is for turning on and Continued the items listed below. shutting off the gas to the appliance. 10. Attach mounting brackets to fireplace • piping (check local codes) Apply pipe joint sealant lightly to male floor using masonry screws (in hard- • sealant (resistant to propane/LP gas) threads. This
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER Test Pressures Equal To or Less Than Pressure Testing Heater Gas INSTALLATION 1/2 PSIG (3.5 kPa) Connections Continued 1. Close equipment shutoff valve (see Fig- 1. Open equipment shutoff valve (see Fig- ure 14). CHECKING GAS ure 14). 2. Pressurize supply piping system by ei- CONNECTIONS 2. Open main gas valve located on or near ther using compressed air or opening gas meter. main gas valve located on or near gas 3. Make sure c
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OWNERS MANUAL Front Log (#1L) Peg Groove INSTALLATION in Back Continued Rear Log of Log Front Log (#1R) (#3) INSTALLING LOGS Grate Prong Notch WARNING: Failure to posi- tion the parts in accordance with these diagrams or failure to use only parts specifically approved with this heater may result in prop- erty damage or personal injury. Each log is marked with a number. These numbers will help you identify the log when Grate Prongs installing. It is very important to install Metal Grate Bar th
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER 4. Wait five (5) minutes to clear out any LIGHTING OPERATING gas. Then smell for gas, including INSTRUCTIONS HEATER near the floor. If you smell gas, STOP! Follow “B” in the safety in- WARNING: FOR YOUR SAFETY formation, column 1. If you don’t • If fireplace has glass doors, smell gas, go to the next step. READ BEFORE never operate this heater with 5. Press in control knob and turn coun- LIGHTING glass doors closed. If you op-
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OWNERS MANUAL FRONT BURNER FLAME OPERATING INSPECTING PATTERN HEATER BURNERS Figure 25 shows correct front burner flame Check pilot flame pattern and burner flame Continued pattern. Figure 26 shows incorrect front patterns often. burner flame pattern. The incorrect burner VARIABLE CONTROL flame pattern shows yellow tipping at top of PILOT FLAME PATTERN OPERATION blue flame. Figure 23 shows a correct pilot flame pat- The variable control valve can be set to tern. Figure 24 shows an incorrect pil
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER 4. Check the injector holder located at the Injector Holder CLEANING AND end of the burner tube again. Remove MAINTENANCE any large particles of dust, dirt, lint, or pet hair with a soft cloth or vacuum Ports/Slots cleaner nozzle. WARNING: Turn off heater and let cool before cleaning. 5. Blow air into the primary air holes on the injector holder. Burner 6. In case any large clumps of dust have Tube CAUTION: You must keep now
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OWNERS MANUAL TROUBLESHOOTING CAUTION: Never use a wire, WARNING: Turn off and un- needle, or similar object to clean plug heater and let cool before Note: For additional help, visit DESA ODS/pilot. This can damage ODS/ servicing. Only a qualified ser- International’s technical service web vice person should service and pilot unit. site at www.desatech.com. repair heater. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY When ignitor bu
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY One or both burners do not light after ODS/ 1. Inlet gas pressure is too low 1. Contact local natural gas company pilot is lit 2. Burner orifice(s) clogged 2. Clean burner(s) (see Cleaning and Maintenance, page 16) or replace burner orifice(s) 3. Mislocated crossover tube 3. Contact qualified service person 4. Burner orifice(s) diameter is too small 4. Replace bur
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OWNERS MANUAL 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
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FIREPLACE MANUFACTURERS INCORPORATED UNVENTED NATURAL GAS LOG HEATER 4 5 ILLUSTRATED PARTS BREAKDOWN VARIABLE MANUALLY- CONTROLLED MODELS 3 VFN18MV VFN24MV VFN30MV 2 1L 26 26-1 26-2 20 1R 24 6-2 27 9 6-1 28 6 27 7 8 27 22 21 10 23 12 20 11 24 16 15 25 14 18 13 17 19 105070 20
