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NATURAL GAS LOG HEATER
VARIABLE MANUALLY-CONTROLLED MODELS ALSO DESIGN-CERTIFIED AS
OWNER'S OPERATION AND INSTALLATION MANUAL
VFN18R
VFN24R
VFN30R
18", 24", and 30"
Remote-Ready
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 sup-
plier, call the fire department.
— Installation and service must be per-
formed by a qualified installer, service
agency, or the gas supplier.
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 4 of this manual.
This appliance may be installed in an aftermarket*, permanently located, manufac-
tured (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
UNVENTED (VENT-FREE)
VENTED DECORATIVE APPLIANCES
EMBER MASTER
Save this manual for future reference
™
WARNING: Improper installation, adjust-
ment, alteration, service, or maintenance
can cause injury or property damage.
Refer to this manual for correct installa-
tion and operational procedures. For as-
sistance or additional information con-
sult a qualified installer, service agency,
or the gas supplier.
WARNING: This appliance is for installa-
tion only in a solid-fuel burning masonry
or UL127 factory-built fireplace, or in an
approved ventless firebox. It is design-
certified for these installations in accor-
dance with ANS Z21.11.2. Exceptions: Do
not install this appliance in a factory-built
fireplace that includes instructions stat-
ing it has not been tested or should not be
used with unvented gas logs.
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Summary of Contents for FMI VFN18R
- Page 1 UNVENTED (VENT-FREE) NATURAL GAS LOG HEATER VARIABLE MANUALLY-CONTROLLED MODELS ALSO DESIGN-CERTIFIED AS VENTED DECORATIVE APPLIANCES OWNER’S OPERATION AND INSTALLATION MANUAL VFN18R VFN24R VFN30R 18", 24", and 30" Remote-Ready 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.
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Page 2: Safety Information
FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER SAFETY INFORMATION WARNINGS IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, oper- ate, or service this heater. Im- proper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning. -
Page 3: Local Codes
SAFETY INFORMATION Continued 14. Turn heater off and let cool before servic- ing, installing, or repairing. When using the hand-held remote accessory, make sure the selector switch is in the OFF position. Only a qualified service person should in- stall, service, or repair heater. 15. -
Page 4: Air For Combustion And Ventilation
FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER AIR FOR COMBUSTION AND VENTILATION WARNING: This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ven- tilation air. Read the following in- structions to insure proper fresh air for this and other fuel-burning appliances in your home. -
Page 5: Determining Fresh-Air Flow For Heater Location
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. - Page 6 FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER AIR FOR COMBUSTION AND VENTILATION Continued 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 pro- vide two permanent openings: one within 12"...
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Page 7: Check Gas Type
INSTALLATION NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your pri- mary heating system. Do not in- stall this heater as your primary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. - Page 8 FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER 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.
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Page 9: Mantel Clearances
INSTALLATION Continued MANTEL CLEARANCES In addition to meeting noncombustible mate- rial clearances, you must also meet required clearances between fireplace opening and mantel shelf. If you do not meet the clear- ances 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... -
Page 10: Installing Damper Clamp Accessory For Vented Operation
FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER INSTALLATION Continued INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION Note: When used as a vented heater, appli- ance must be installed only in a solid-fuel burning fireplace with a working flue and constructed of noncombustible material. -
Page 11: Connecting To Gas Supply
INSTALLATION Continued Gas Control Flexible Gas Hose (if allowed by local codes) Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator Masonry Screw Masonry Screw Figure 12 - Attaching Base to Fireplace Floor CONNECTING TO GAS SUPPLY WARNING: This appliance re- quires a 1/2"... -
Page 12: Checking Gas Connections
FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER INSTALLATION Continued CHECKING GAS CONNECTIONS WARNING: Test all gas pip- ing and connections for leaks after installing or servicing. Cor- rect all leaks at once. WARNING: Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. -
Page 13: Installing Logs
INSTALLATION Continued INSTALLING LOGS 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 installing. -
Page 14: Operating Heater
FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER OPERATING HEATER FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not fol- low these instructions exactly, a fire or explosion may result caus- ing property damage, personal injury or loss of life. A. -
Page 15: To Turn Off Gas To Appliance
OPERATING HEATER Continued 8. 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, contact a qualified service person or gas supplier for repairs. -
Page 16: Pilot Flame Pattern
FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER OPERATING HEATER Continued IMPORTANT: This remote control has been specially engineered to take an air temperature sample every 5.5 minutes in the auto mode. It will not respond immediately to the tempera- ture setting being turned up or down. -
Page 17: Cleaning And Maintenance
INSPECTING BURNERS Continued 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. WARNING: If yellow tipping occurs, your heater could pro- duce increased levels of carbon monoxide. -
Page 18: Troubleshooting
FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER TROUBLESHOOTING Note: For additional help, visit DESA International’s technical service web site at www.desatech.com. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM When ignitor button is pressed, there is no... - Page 19 TROUBLESHOOTING Continued OBSERVED PROBLEM One or both burners do not light after ODS/ pilot is lit Delayed ignition of one or both burners Burner backfiring during combustion Yellow flame in front burner during burner combustion Slight smoke or odor during initial operation Moisture/condensation noticed on windows Heater produces a whistling noise when burners are lit...
- Page 20 FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER 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.
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Page 21: Specifications
TECHNICAL SERVICE You may have further questions about in- stallation, operation, or troubleshooting. If so, contact Fireplace Manufacturers Incorporated's Technical Service Depart- ment at 1-888-427-8322. You can also visit DESA International’s technical services site www.desatech.com. REPLACEMENT PARTS Note: Use only original replacement parts. -
Page 22: Illustrated Parts Breakdown
FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER ILLUSTRATED PARTS BREAKDOWN VFN18R VFN24R VFN30R 105072... -
Page 23: Parts List
PARTS LIST VFN18R VFN24R VFN30R VFN18R 105241-01 — 105243-01 105245-01 105249-01 105247-01 103779-01 098249-01 103780-01 101330-01 101008-01 101007-01 100999-04 103984-01 098271-01 102445-01 103588-01 103782-01 M12461-26 103781-01 098264-02 103784-02 103784-01 103587-01CK M11084-26 099387-12 100609-01 101004-11 101004-11 103783-01 099998-01 103284-02 099918-02 M11084-26... - Page 24 FIREPLACE MANUFACTURERS INC. UNVENTED NATURAL GAS LOG HEATER ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supply these accessories, call Fireplace Manufacturers Incorporated's Parts Department at 1-800- 888-2050 for referral information. You can also write to the address listed on the back page of this manual.
- Page 25 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ 105072...
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Page 26: Warranty Information
VENT-FREE NATURAL GAS LOG HEATERS DESA International warrants this product to be free from defects in materials and components for one (1) year from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions.
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