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UNVENTED (VENT-FREE) GAS LOG HEATER
Also Design-Certified As A Vented Decorative Appliance
OWNER'S OPERATION AND INSTALLATION MANUAL
FLAME-MAX
Multi-Sided
Log Design
VYM27NR/PR
FVFM27NR/PR
Remote Control
Ready Model
WARNING: If the information in this manual
is not followed exactly, a fire or explosion
may result causing property damage, per-
sonal 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 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,* 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
®
Save this manual for future reference.
TM
WARNING: Improper installation, ad-
justment, alteration, service, or main-
tenance can cause injury or property
damage. Refer to this manual for cor-
rect installation and operational proce-
dures. For assistance or additional in-
formation consult 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 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.
Patent Pending
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Table of Contents
Related Manuals for Desa FVFM27NR/PR
Summary of Contents for Desa FVFM27NR/PR
- Page 1 OWNER’S OPERATION AND INSTALLATION MANUAL ® FLAME-MAX Multi-Sided Log Design VYM27NR/PR FVFM27NR/PR Remote Control Ready Model WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, per- sonal injury, or loss of life.
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Page 2: Safety Information
® FLAME-MAX UNVENTED GAS LOG HEATER SAFETY INFORMATION WARNINGS WARNING ICON G 001 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: Product Features
SAFETY INFORMATION Continued 13. Do not use this heater to cook food or burn paper or other objects. 14. Do not use heater if any part has been exposed to or under water. Immediately call a qualified service technician to in- spect the room heater and to replace any part of the control system and any gas control which has been under water. -
Page 4: Air For Combustion And Ventilation
® FLAME-MAX UNVENTED 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
3. Add the Btu/Hr of all fuel burning appliances in the space. Vent-free heater _____________ 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. -
Page 6: Ventilation Air
® FLAME-MAX UNVENTED 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"... -
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 ® FLAME-MAX UNVENTED 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 ma- terial clearances, you must also meet re- quired clearances between fireplace open- ings and mantel shelf on each side of the fireplace. If you do not meet the clearances listed below, you will need a hood. Determining Minimum Mantel Clearance If you meet minimum clearance between... -
Page 10: Installing Damper Clamp Accessory For Vented Operation
® FLAME-MAX UNVENTED 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. If your heater is a manually controlled model, you may use this heater as a vented product. -
Page 11: Connecting To Gas Supply
Install the external regulator between the heater and propane/LP supply. WARNING: Never connect natural gas heater to private (non- utility) gas wells. This gas is com- monly known as wellhead gas. Installation Items Needed Before installing heater, make sure you have the items listed below. -
Page 12: Checking Gas Connections
® FLAME-MAX UNVENTED GAS LOG HEATER INSTALLATION Continued We recommend that you install 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 sedi- ment trap where trapped matter is not likely to freeze. -
Page 13: Installing Logs
INSTALLATION Continued Pressure Testing Heater Gas Connections 1. Open equipment shutoff valve (see Fig- ure 15, page 12). 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. -
Page 14: Operating Heater
® FLAME-MAX UNVENTED 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. Note: If pilot goes out, repeat steps 4 through 8. -
Page 16: Inspecting Burners
® FLAME-MAX UNVENTED GAS LOG HEATER OPERATING HEATER Continued IMPORTANT: This remote control has been specially engineered to take an air temperature sample ev- ery 5.5 minutes in the AUTO mode. It will not respond immediately to the temperature setting being turned up or down. -
Page 17: Cleaning And Maintenance
INSPECTING BURNERS Continued BURNER FLAME PATTERN Figure 29 shows a correct burner flame pat- tern. Figure 30 shows an incorrect burner flame pattern. If burner flame pattern is incorrect, • turn heater off (see To Turn Off Gas to Appliance, page 15) •... -
Page 18: Troubleshooting
® FLAME-MAX UNVENTED 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 Burner does not light after ODS/pilot is lit Delayed ignition burner Burner backfiring during combustion Slight smoke or odor during initial operation Moisture/condensation noticed on windows Heater produces a whistling noise when burner is lit White powder residue forming within burner box or on adjacent walls or furniture Remote does not function 108382...
- Page 20 ® FLAME-MAX UNVENTED GAS LOG HEATER TROUBLESHOOTING Continued • 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.
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Page 21: Technical Service
32 lbs. TECHNICAL SERVICE You may have further questions about in- stallation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-866-672-6040. 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
® FLAME-MAX UNVENTED GAS LOG HEATER ILLUSTRATED PARTS BREAKDOWN VYM27NR FVFM27NR VYM27PR FVFM27PR For more information, visit www.desatech.com NOTE: Part numbers 22 and 23 are for natural gas model only. 108382... -
Page 23: Parts List
PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 21 of this manual. VYM27NR FVFM27NR VYM27PR FVFM27PR VYM27NR FVFM27NR 104676-01 103779-01 098249-01 104592-01 098264-02 102843-01 099056-16 104591-01 100609-01 103781-01... - Page 24 ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supply these accessories, call DESA International at 1-800-458-6860 for referral informa- tion. You can also write to the address listed on the back page of this manual.
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Page 25: Owner's Registration Form
Address: City: Home Phone: E-Mail: Please answer the following questions to register your product with DESA International: Where will the product be used? Living/Family Room Office/Warehouse If you bought this product yourself, did you plan to purchase this type of product before going into the store? - Page 26 FLAME-MAX UNVENTED GAS LOG HEATER For more information, visit www.desatech.com ® 2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 Postage Required 108382...
- Page 27 OWNER’S MANUAL NOTES _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ For more information, visit www.desatech.com 108382...
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Page 28: Warranty Information
We make no other warranty, expressed or implied. DESA International warrants this product to be free from defects in materials and components for four (4) years from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions.