Design Dynamics VF-24N-PJD Owner's Operation And Installation Manual

Unvented (vent-free) gas log heater

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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
WARNING: If the information in this manual is not fol-
lowed 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 quali-
fied 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
VF-24N-PJD, VF-24P-PJD
VF-18N-PJD, VF-18P-PJD

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Summary of Contents for Design Dynamics VF-24N-PJD

  • Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL VF-24N-PJD, VF-24P-PJD VF-18N-PJD, VF-18P-PJD WARNING: If the information in this manual is not fol- lowed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
  • Page 2: Table Of Contents

    WARNING: Improper installation, adjustment, altera- tion, service or maintenance can cause injury or prop- erty damage. Refer to this manual for correct installation and operational procedures. For assistance or addi- tional 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 fire- place or in a listed ventless firebox enclosure.
  • Page 3: Safety Information

    SAFETY INFORMATION WARNING: This product con- tains 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 heater. Improper use of this heater can cause serious injury or death from burns, fire, explosion,...
  • Page 4: Product Identification

    SAFETY INFORMATION 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) in- side any structure. Locate propane/LP supply tank(s) outdoors (propane/LP units only).
  • Page 5: Local Codes

    LOCAL CODES Install and use heater with care. Follow all local codes. In the absence of local codes, use the lat- est 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.
  • Page 6: Air For Combustion

    AIR FOR COMBUSTION AND VENTILATION Continued Unusually tight construction is defined as construction where: a. walls and ceilings exposed to the out- side atmosphere have a continuous water vapor retarder with a rating of one perm (6 x 10 kg per pa-sec-m with openings gasketed or sealed and b.
  • Page 7: Combustion And Ventilation Air

    AIR FOR COMBUSTION AND VENTILATION Continued If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an uncon- fined space. You will need no additional fresh air ventilation. WARNING: If the area in which the heater may be oper- ated is smaller than that defined as an unconfined space or if the...
  • Page 8: Installation

    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 pri- mary heat source. If you have a central heating system, you may run system’s circulating blower while using heater.
  • Page 9: Combustible Materials

    INSTALLATION Continued INSTALLATION AND CLEARANCES FOR VENT-FREE OPERATION WARNING: Maintain the minimum clearances. If you can, provide greater clearances from floor, ceiling and adjoining wall. MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE MATERIALS Log Size Side Wall Ceiling Floor LOG SIZING REQUIREMENTS Minimum Firebox Size Size Height Depth...
  • Page 10 Noncombustible Material Requirements for Distance (A) Safe Installation 12" or more Noncombustible material OK. Between 8" 24" Model:Install fire place hood accessory and 12" (GA6060, see Accessories, page 25). 18" Model: Noncombustible material OK Less than 8" Noncombustible material must be extended to at least 8".
  • Page 11: Mantel Clearances

    INSTALLATION Continued MANTEL CLEARANCES In addition to meeting noncombustible material clearances, you must also meet required clearances between fireplace openings 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 mantel shelf and top of fireplace opening, a hood is not...
  • Page 12: Connecting To Gas Supply

    INSTALLATION Continued Flexible Gas Hose (if allowed by local codes) Fitting Figure 10 - Attaching Flexible Gas Hose to Regulator CONNECTING TO GAS SUPPLY WARNING: This appliance requires a 1/2" NPT (National Pipe Thread) inlet connection to the pressure regulator. WARNING: A qualified service person must connect heater to gas supply.
  • Page 13 INSTALLATION Continued 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 12). IMPORTANT: Install equipment shutoff valve in an accessible location.
  • Page 14: Operating Heater

    INSTALLATION Continued Equipment Shutoff Valve Figure 13 - Equipment Shutoff Valve Equipment Shutoff Valve Gas Meter Figure 14 - Checking Gas Joints for Natural Gas Propane/LP Supply Tank Figure 15 - Checking Gas Joints for PRESSURE TESTING HEATER GAS CONNECTIONS 1.
  • Page 15: Operating Heater

    OPERATING HEATER Continued 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 neighborʼs phone. Follow the gas supplierʼs instructions.
  • Page 16 OPERATING HEATER Continued Changing The Code • The control is radio frequency operated. A code (chosen from among 4,000 available codes) is preset for all valves, but can be changed if required (15 additional codes available). Change DIP switch position. (The DIP switch is located inside the hand held control at the top of the battery compart- ment.) Then press the receiver's reset button...
  • Page 17: To Turn Gas Off To Appliance

    OPERATING HEATER Continued Set Timer • Switch to timer mode by pressing the SET button briefly. • Press the SET button until P1 • Set the hours with and minutes with • Press SET briefly for the next burner cycle time.
  • Page 18: Inspecting Burners

    OPERATING HEATER Continued 10. Continue holding down metal core for about 10 seconds and then release the metal core. Pilot should stay lit. If not, repeat steps one through 4, page 17. 11. Turn MAN-Knob to ON position - main gas flows.
  • Page 19: Cleaning And Maintenance

    CLEANING AND MAINTENANCE WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep con- trol areas, burner and circulating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualified service person.
  • Page 20: 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 When are pressed...
  • Page 21 OBSERVED PROBLEM Burner backfiring during com- bustion Orange flame in burner during burner combustion Slight smoke or odor during initial operation (first hour) Heater produces a whistling noise when burner is lit White powder residue forming within burner box or on adjacent walls or furniture Moisture/condensation noticed on windows...
  • Page 22 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. Fol- low the gas supplier’s instructions.
  • Page 23: Wiring Diagram

    IDENTIFYING ERROR SIGNALS FROM RECIEVER OBSERVED PROBLEM Long signals (0.8 second tone, 0.2 second break) during ignition 5 second continuous tone 5 short signals (8.2 second tone, 0.2 second break) Thermocouple Battery Compartment 111826-04A TROUBLESHOOTING Continued POSSIBLE CAUSE Battery nearly down. (When signal appears the first time ap- proximately 10 ignitions left) Cable is not connected, ON/OFF...
  • Page 24: Service Hints

    If so, contact DESAʼs Technical Service Department at 1-866-672-6040. When calling please have your model and serial numbers of your appliance ready. You can also visit DESAʼs technical services web site at www.desatech.com REPLACEMENT PARTS Note: Use only original replacement parts. This will protect your warranty coverage for parts replaced under warranty.
  • Page 25: Specifications

    * For purpose of input adjustment Purchase these heater accessories from your local dealer. If they can not supply these accessories, call DESA at 1-866-672-6040 for referral information. You can also write to the address listed on the back page of this manual.
  • Page 26: Illustrated Parts Breakdown And Parts List

    ILLUSTRATED PARTS BREAKDOWN MODELS VF-18N-PJD AND VF-18P-PJD www.desatech.com 111826-04A...
  • Page 27: Parts List

    This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 24 of this manual. PART NUMBER VF-18N-PJD 112791-01 116672-01 116673-01 116673-02 112814-06 116328-01 116559-01 114365-04 114365-05 111824-01 111817-05 116336-01 112812-06 111804-08 112812-05...
  • Page 28 ILLUSTRATED PARTS BREAKDOWN MODELS VF-24N-PJD AND VF-24P-PJD www.desatech.com 111826-04A...
  • Page 29 This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 24 of this manual. PART NUMBER VF-24N-PJD 111811-01 116672-01 116673-01 116673-02 112814-06 112828-01 112829-01 114365-01 114365-02 111824-01 111817-05 112812-02...
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  • Page 32: Warranty Information

    VENT-FREE GAS LOG HEATERS DESA 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.

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