1. Manuals
  2. Brands
  3. Desa Manuals
  4. Heater
  5. "A" Models
  6. Owner's operation and installation manual

Desa "A" Models Owner's Operation And Installation Manual

Unvented (vent-free) gas log heater
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
("A" Models) 18", 24" and 30" Remote-Ready
Remote-Ready and Variable Manually-Controlled Models
Also Design-Certified As Vented Decorative Appliances
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.
For more information, visit www.desatech.com
and Variable Manually-Controlled
Save this manual for future reference.

Advertisement

Table of Contents
loading

Related Manuals for Desa "A" Models

Summary of Contents for Desa "A" Models

  • Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL ("A" Models) 18", 24" and 30" Remote-Ready and Variable Manually-Controlled Remote-Ready and Variable Manually-Controlled Models Also Design-Certified As Vented Decorative Appliances 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 fireplace, or in a listed ventless firebox enclosure.

  • Page 3: Safety Information

    SAFETy INFORMATION WARNING: Do not allow fans to blow directly into the fireplace. WARNING: This product con- Avoid any drafts that alter burner tains and/or generates chemicals flame patterns. Ceiling fans can known to the State of California create drafts that alter burner to cause cancer or birth defects flame patterns.
  • Page 4 12. Do not use this heater to cook food or burn SAFETy INFORMATION paper or other objects. Continued 13. Do not use heater if any part has been exposed 1. This appliance is only for use with the type of to or under water.

  • Page 5: Product Information

    PRODUCT UNPACkING INFORMATION CAUTION: Do not remove the Log Set data plates from the grate as- sembly. The data plates contain important warranty and safety information. 1. Remove logs and heater base assembly from carton. Note: Do not pick up heater base as- sembly by burners.

  • Page 6: Air For Combustion And Ventilation

    AIR FOR COMbUSTION Unusually Tight Construction The air that leaks around doors and windows AND VENTILATION may provide enough fresh air for combustion and ventilation. However, in buildings of unusually WARNING: This heater shall tight construction, you must provide additional not be installed in a confined fresh air.
  • Page 7 Example: 51,200 Btu/Hr (maximum the AIR FOR COMbUSTION space can support) AND VENTILATION 73,000 Btu/Hr (actual amount of Continued Btu/Hr used) The space in the above example is a confined DETERMINING FRESH-AIR FLOW space because the actual Btu/Hr used is more FOR HEATER LOCATION than the maximum Btu/Hr the space can support.

  • Page 8: Installation

    AIR FOR COMbUSTION INSTALLATION AND VENTILATION NOTICE: This heater is intended Continued for use as supplemental heat. Use this heater along with your primary heating system. Do not 12" install this heater as your pri- Ventilation mary heat source. If you have a Ventilation Grills Grills Into Into Adjoining Room,...
  • Page 9 INSTALLATION WARNING: This appliance Continued is equipped for (natural or pro- pane/LP) gas. Field conversion WARNING: Seal any fresh is not permitted. air vents or ash clean-out doors located on floor or wall of fire- INSTALLATION AND CLEARANCES place. If not, drafting may cause FOR VENT-FREE OPERATION pilot outage or sooting.
  • Page 10 INSTALLATION Noncombustible Requirements for Continued Material Distance (A) Safe Installation Note: When installing your gas logs into 12" or more Noncombustible a manufactured firebox, follow firebox material OK. manufacturer’s instructions for minimum Between 8" and 12" 24" or 30" Models: clearances to combustible materials.
  • Page 11 INSTALLATION NOTICE: If your installation does Continued not meet the minimum clear- 12" ances shown, you must do one Underside of 10" Mantel Shelf 8" of the following: 6" All minimum " • operate the logs only with the distances are Minimum in inches Noncombustible...
  • Page 12 INSTALLATION Damper Continued Clamp Damper INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED Damper OPERATION Clamp Note: When used as a vented heater, appliance must be installed only in a solid-fuel burning fireplace with a working flue and constructed of Damper Damper noncombustible material.
  • Page 13 4. For Variable Manually-Controlled Models INSTALLATION mark screw locations through holes in mount- Continued ing brackets (see Figure 13). For Remote- Ready Models mark screw locations through Installation Items Needed • hardware package (provided with heater) holes in front panel of base (see Figure 14). •...
  • Page 14 For propane/LP units, the installer must supply INSTALLATION an external regulator. The external regulator will Continued reduce incoming gas pressure. You must reduce incoming gas pressure to between 11" and 14" of CONNECTING TO GAS SUPPLY water. If you do not reduce incoming gas pres- sure, heater regulator damage could occur.
  • Page 15 INSTALLATION CAUTION: Avoid damage to Continued gas control. Hold gas control with wrench when connecting WARNING: Use pipe joint it to gas piping and/or fittings sealant that is resistant to liquid (Remote-Ready Models Only). petroleum (LP) gas. We recommend that you install a sediment trap in CSA Design- supply line as shown in Figures 16 or 17, depend- Approved...
  • Page 16 4. Check all joints from equipment shutoff valve INSTALLATION to control valve (Manually-Controlled Mod- Continued els), or to gas control (Remote-Ready Models) (see Figures 19 and 20). Apply noncorrosive PRESSURE TESTING GAS SUPPLY leak detection fluid to all joints. Bubbles form- PIPING SYSTEM ing show a leak.

  • Page 17: Installing Logs

    INSTALLATION Center Log (#2) Continued INSTALLING LOGS WARNING: Failure to posi- Metal Post tion the parts in accordance with these diagrams or failure to use only parts specifically Grate approved with this heater may result in property damage or personal injury. Metal It is very important to install these logs exactly Post...

  • Page 18: Operating Heater

    WHAT TO DO IF YOU SMELL GAS INSTALLATION • Do not try to light any appliance. Continued • Do not touch any electric switch; do not use 5. Place the right crossover log (#6) on the center any phone in your building. log and the front log as shown in Figure 25.
  • Page 19 8. Push in and turn control knob counter- OPERATING HEATER clockwise to the HI position. Both Continued burners should light. Set control knob to Note: Home owners generally prefer to op- desired setting. erate their heater with the chimney damper closed.
  • Page 20 OPERATING HEATER LIGHTING INSTRUCTIONS Continued MANUAL LIGHTING WARNING PROCEDURE • If fireplace has glass doors, 1. Follow steps 1 through 5 under Lighting Instructions, page 19. never operate this heater with 2. Depress control knob and light pilot with glass doors closed. If you op- match.
  • Page 21 10. Wait one minute and switch selector switch OPERATING HEATER to the ON position to light burners. Note: Continued AUTO is only functional when using GWMT1 or GWMS2 optional accessories. WARNING: Burners will 11. Set flame adjustment knob to any level come on automatically within between HI and LO.

  • Page 22: Remote Operation

    OPERATING HEATER ON/OFF SERIES (MODEL HRC100) Hold the control button on the hand-held Continued remote until burner turns on. Hold the con- MANUAL LIGHTING trol button again until burner turns off (see Figure 34). PROCEDURE 1. Follow steps 1 through 6 under Lighting To Lock press both buttons on hand-held Instructions, page 20.

  • Page 23: Inspecting Burners

    OPERATING HEATER INSPECTING bURNERS Check pilot flame pattern and burner flame pat- Continued terns often. Manual Mode 1. Press the POWER and LOCK buttons PILOT FLAME PATTERN together to turn on the hand-held remote Figure 34 shows a correct pilot flame pattern. control.

  • Page 24: Cleaning And Maintenance

    INSPECTING bURNERS CLEANING AND Continued MAINTENANCE FRONT BURNER FLAME PATTERN WARNING: Turn off heater Figure 36 shows correct front burner flame pat- and let cool before cleaning. tern. Figure 37 shows incorrect front burner flame pattern. The incorrect burner flame pattern shows yellow tipping at top of blue flame.

  • Page 25: Replacement Parts

    When calling please have your model and serial Pilot Assembly numbers of your heater ready. You can also visit DESA’s technical services web Figure 39 - Pilot Inlet Air Hole (Your pilot site at www.desatech.com. may vary from pilots shown) CLEANING LOGS •...

  • Page 26: Troubleshooting

    TROUbLESHOOTING WARNING: Turn off and unplug 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 POSSIBLE CAUSE REMEDY...
  • Page 27 TROUbLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame goes 1. C o n t r o l k n o b n o t f u l l y 1. Press in control knob fully out when control knob is re- pressed in leased 2.
  • Page 28 TROUbLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Yellow flame in front burner dur- 1. Not enough air 1. Check burner(s) for dirt ing burner combustion and debris. If found, clean burner(s) (see Cleaning and Maintenance, page 24) 2. Gas regulator defective 2.
  • Page 29 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. Fol- low the gas supplier’s instructions.

  • Page 30: Specifications

    SPECIFICATIONS E18N-A, VS18N-A, E18NR-A, E18P-A, VS18P-A, E18PR-A, VS18NR-A VS18PR-A • Rating (Variable): 16,000/26,000 Btu/Hr • Rating (Variable): 16,000/26,000 Btu/Hr • Gas Type: Natural • Gas Type: Propane/LP • Ignition: Piezo • Ignition: Piezo • Manifold Pressure: 3.4" W.C. • Manifold Pressure: 7.9" W.C. •...

  • Page 31: Accessories

    If they can not supply these accessories, call (Not Shown) For all Remote-Ready Models. The desired com- DESA at 1-866-672-6040 for referral information. fort setting can be selected on the wall thermostat You can also write to the address listed on the back page of this manual.

  • Page 32: Illustrated Parts Breakdown And Parts List

    ILLUSTRATED PARTS bREAkDOWN VARIABLE MANUALLY-CONTROLLED SPLIT OAK MODELS VS18N-A, E18N-A, VS18P-A, E18P-A, VS24N-A, E24N-A, VS24P-A, E24P-A, VS30N-A AND VS30P-A 23-1 23-2 30" Models Only www.desatech.com 112471-01B...

  • Page 33: Parts List

    PARTS LIST VARIABLE MANUALLY-CONTROLLED SPLIT OAK MODELS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. PART NUMBER VS18N-A VS18PVC VS24N-A VS24P-A E18N-A E18P-A E24N-A E24P-A VS30N-A VS30P-A DESCRIPTION...
  • Page 34 ILLUSTRATED PARTS bREAkDOWN REMOTE-READY VARIABLE CONTROL VS18NR-A, E18NR-A, VS18PR-A, E18PR-A, VS24NR-A, E24NR-A, VS24PR-A, E24PR-A, VS30NR-A, E30NR-A, VS30PR-A AND E30PR-A 30" Models Only www.desatech.com 112471-01B...
  • Page 35 PARTS LIST REMOTE-READY VARIABLE CONTROL This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 25 of this manual. PART NUMBER VS18NR-A VS18PR-A VS24NR-A VS24PR-A VS30NR-A VS30PR-A E18NR-A E18PR-A E24NR-A E24PR-A E30NR-A...

  • Page 36: 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.

Table of Contents