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V F- 2 4 N- EM U
V F- 2 4 P- EMU
V F- 1 8 N- EM U
V F- 1 8 P- EMU
ANSI Z21.11.2-2002
Approved
Design Dynamics Vent-free Models 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, 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 sup-
plier'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.
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.
Warning: This product must be installed by a Licensed Plumber or Gas Fitter when installed
within The Commonwealth of Massachusetts.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
For more information, visit www.desatech.com
Certified
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 installation and
operational procedures. For assistance
or additional information consult a quali-
fied installer, service agency, or the gas
supplier.
WARNING: This appliance is for instal-
lation 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.
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Related Manuals for Design Dynamics VF-18N-EMU
Summary of Contents for Design Dynamics VF-18N-EMU
- Page 1 V F- 2 4 N- EM U V F- 2 4 P- EMU V F- 1 8 N- EM U V F- 1 8 P- EMU ANSI Z21.11.2-2002 Approved Design Dynamics Vent-free Models 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, per- sonal injury, or loss of life.
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Page 2: Table Of Contents
SAFETY INFORMATION TABLE OF CONTENTS SAFETY INFORMATION...2 PRODUCT IDENTIFICATION...3 OPTIONAL REMOTE CONTROL ACCESSORIES...4 LOCAL CODES ...4 UNPACKING...4 PRODUCT FEATURES ...4 AIR FOR COMBUSTION AND VENTILATION ...4 INSTALLATION...7 OPERATING HEATER...14 INSPECTING BURNERS ...17 CLEANING AND MAINTENANCE ...18 SAFETY INFORMATION WARNINGS IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or ser- vice this heater. -
Page 3: Safety Information
SAFETY INFORMATION Continued 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. Do not place propane/LP supply tank(s) inside any structure. Locate propane/LP supply tank(s) outdoors (propane/LP units only). -
Page 4: Optional Remote Control Accessories
LOCAL CODES UNPACKING PRODUCT FEATURES AIR FOR COMBUSTION AND VENTILATION Providing Adequate Ventilation OPTIONAL REMOTE CONTROL ACCESSORIES There are four optional remote controls that can be purchased separately for Remote-Ready Models Only: • wall switch • hand-held ON/OFF remote • wall thermostat •... -
Page 5: Determining Fresh-Air Flow For Heater Location
AIR FOR COMBUSTION AND VENTILATION Continued 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 kg per pa-sec-m openings gasketed or sealed and b. -
Page 6: Ventilation Air
Ventilation Air 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 provide two permanent openings: one within 12" of the ceiling and one within 12"... -
Page 7: Installation
INSTALLATION NOTICE: This heater is intended for use as supple- mental heat. Use this heater along with your primary heating system. Do not install this heater as your pri- mary 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. - Page 8 Installation and Clearances for Vent-Free Operation (Cont.) INSTALLATION Continued Carefully follow the instructions below. This will ensure safe in- stallation into a masonry, UL127-listed manufactured fireplace, or listed vent-free firebox. Minimum Clearances For Side Combustible Material, Side Wall, and Ceiling A.
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Page 9: Mantel Clearances
INSTALLATION Continued MANTEL CLEARANCES Inadditiontomeetingnoncombustiblematerialclearances,youmustalso 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 10: Installing Damper Clamp Accessory For Vented Operation
Installing Damper Clamp Accessory for Vented Operation Installing Heater Assembly INSTALLATION Continued INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION Note:When used as a vented decorative, appliance must be installed only in a solid-fuel burning fireplace with a working flue and con- structed of noncombustible material. -
Page 11: Connecting To Gas Supply
INSTALLATION Continued WARNING: This appliance requires a 3/8" NPT (National Pipe Thread) inlet connection to the pres- sure regulator. WARNING: A qualified service person must con- nect 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). -
Page 12: Checking Gas Connections
Connecting To Gas Supply (Cont.) Checking Gas Connections INSTALLATION Continued CSA Design-Certified Equipment Shutoff Valve With 1/8" NPT Tap* Approved Flexible Gas Hose (if allowed by local codes) 3" Minimum Gas Control Pipe Cap Nipple Sediment Trap Figure 13 - Gas Connection (Remote-Ready Models Only) * Purchase the optional CSA design-certified equipment shutoff valve from your dealer. - Page 13 INSTALLATION Continued Equipment Shutoff Valve Propane/LP Supply Tank Figure 15 - Checking Gas Joints (propane/LP only) Thermostat Gas Valve or Control Valve Location Gas Meter Figure 16 - Checking Gas Joints (Natural Gas Only) For more information, visit www.desatech.com 111826-05 Thermostat Gas Valve or Control Valve Location...
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Page 14: Operating Heater
OPERATING HEATER (REMOTE-READY MODELS) For Your Safety Read Before Lighting Lighting Instructions OPERATING HEATER REMOTE-READY MODELS 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. -
Page 15: To Turn Off Gas To Appliance
OPERATING HEATER Continued With control knob pressed in, press and release ignitor but- ton. 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 stay lit, contact a qualified service person or gas supplier for repairs. - Page 16 Remote Control Operation (Cont.) OPERATING HEATER Continued IMPORTANT: Do not leave the selector switch in the RE- MOTE or ON position when the pilot is not lit. This will drain the battery. 2. Press the ON/OFF button to turn the burners on and off. When turning burners off, the pilot will remain lit.
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Page 17: Inspecting Burners
INSPECTING BURNERS Check pilot flame pattern and burner flame patterns often. PILOT FLAME PATTERN Figure 22 shows a correct pilot flame pattern. Figure 23 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. -
Page 18: Cleaning And Maintenance
CLEANING AND MAINTENANCE Cleaning Burner Injector Holder and Pilot Air Inlet Hole 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. In- spect these areas of heater before each use. Have heater inspected yearly by a qualified service per- son. -
Page 19: Troubleshooting
TROUBLESHOOTING Note: For additional help, visit DESA 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 spark at ODS/pilot When ignitor button is pressed, there is spark at ODS/pilot but no ignition ODS/pilot lights but flame goes out when... - Page 20 TROUBLESHOOTING TROUBLESHOOTING Continued OBSERVED PROBLEM One or both burner does not light after ODS/pilot is lit Delayed ignition of burner Burner backfiring during combustion Orange flame in burner during burner combustion Slight smoke or odor during initial op- eration Heater produces a whistling noise when burners are lit White powder residue forming within burner box or on adjacent walls or furniture...
- Page 21 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.
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Page 22: Specifications
SPECIFICATIONS VF-18N-EMU Btu (Variable) 24,000/36,000 Type Gas Natural Gas Only Ignition Piezo Manifold Pressure 3.5" W.C. Inlet Gas Pressure (in. of water) Maximum 10.5" W.C. Minimum* 5.0" W.C. Shipping Weight 32 lbs. * For purpose of input adjustment VF-18P-EMU Btu (Variable) -
Page 23: Wiring Diagram
If so, contact DESA 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 technical services web site at www.desatech.com. For more information, visit www.desatech.com 111826-05 REPLACEMENT PARTS Note: Use only original replacement parts. -
Page 24: Illustrated Parts Breakdown And Parts List
ILLUSTRATED PARTS BREAKDOWN VF-18N-EMU, VF-18P-EMU ILLUSTRATED PARTS BREAKDOWN REMOTE-READY MODELS AND REMOTE CONTROLLED MODELS VF-18N-EMU VF-18P-EMU �� REMOTE MODELS ONLY For more information, visit www.desatech.com �� Log sets and mounting plates are ordered as an assembly �� �� GTA Replacement Part Numbers... - Page 25 ILLUSTRATED PARTS BREAKDOWN REMOTE-READY MODELS AND REMOTE CONTROLLED MODELS VF-24N-EMU VF-24P-EMU For more information, visit www.desatech.com 111826-05 REMOTE MODELS ONLY ILLUSTRATED PARTS BREAKDOWN VF-24N-EMU, VF-24P-EMU 3 Log sets and mounting plates are ordered as an assembly GTA Replacement Part Numbers Model Number GTA Part number VF-24N-EMU...
- Page 26 VF-24N-PDG, VF-24P-PDG, VF-24N-BTB, VF-24P-BTB, VF-18N-PDG, VF-18P-PDG, VF-18N-BTB, VF-18P-BTB PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instruc- tions listed under Replacement Parts on page 23 of this manual. VF-18N-EMU VF-18P-EMU 111808-01 111808-01 see table...
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Page 27: Accessories
ACCESSORIES Purchase these heater accessories from your local dealer. If they can not supply these accessories, call DESA International at 1-866-672-6040 for referral information. You can also write to the address listed on the back page of this manual. EQUIPMENT SHUTOFF VALVE - GA5010 For all models. - Page 28 THIS PAGE INTENTIONALLY LEFT BLANK For more information, visit www.desatech.com 111826-05...
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Page 29: Owner's Registration Form
Address: City: Home Phone: E-Mail: Please answer the following questions to register your product with DESA: 1. 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? 3. - Page 30 Postage Required 2701 S. Harbor Blvd. Santa Ana, CA. 92704 www.desatech.com For more information, visit www.desatech.com 111826-05...
- Page 31 NOTES NOTES ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ For more information, visit www.desatech.com 111826-05...
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Page 32: Limited Warranty
DESA International warrants this product to be free from defects in materials and components for four (4) years and five (5) years on stainless steel burners 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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