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Desa Comfort Glow CGD3924NR Owner's Operation And Installation Manual

Desa owner's operation and installation manual yellow flame design unvented (vent-free) natural gas log heater cgd3924nr
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UNVENTED (VENT-FREE)
NATURAL GAS LOG HEATER
This appliance may be installed in an aftermarket* manufactured (mobile) home, where
not prohibited by state or 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
OWNER'S OPERATION AND INSTALLATION MANUAL
24" Remote/
Thermostatically-
Controlled Model
CGD3924NR
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 build-
ing.
• 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.
YELLOW FLAME DESIGN
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
assistance or additional information
consult a qualified installer, service
agency, or the gas supplier.
WARNING: This gas log set is for instal-
lation in a masonry solid fuel burning
fireplace or a U.L. listed manufactured
solid fuel burning fireplace.
WARNING: This is an unvented gas-
fired heater. It uses air (oxygen) from
the room in which it is installed. Provi-
sions for adequate combustion and ven-
tilation air must be provided. Refer to
Air for Combustion and Ventilation sec-
tion in this manual.
®

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Summary of Contents for Desa Comfort Glow CGD3924NR

  • Page 1 * Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer OWNER’S OPERATION AND INSTALLATION MANUAL 24" Remote/ Thermostatically- Controlled Model CGD3924NR 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.

  • Page 2: Table Of Contents

    CONTENTS SAFETY INFORMATION SECTION Safety Information ... 2 Product Identification ... 4 Local Codes ... 4 Unpacking... 4 Product Features ... 4 Air for Combustion and Ventilation ... 5 Installing ... 8 Check Gas Type ... 8 Installation and Clearances (Vent-Free Operation Only) ... 9 Installing Heater Base Assembly ...
  • Page 3 SAFETY INFORMATION WARNING: Any change to this heater or its controls can be dangerous. 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.

  • Page 4: Product Identification

    PRODUCT IDENTIFICATION Remote Control LOCAL CODES UNPACKING PRODUCT FEATURES Crossover Log Front Log Piezo Remote Ignitor Selector Switch Flame Adjustment Control Knob Knob Figure 1 - Vent-Free Gas Log Heater Install and use heater with care. Follow all local codes. In the absence of local codes, use the latest edition of The National Fuel Gas Code ANSI Z223, also known as NFPA 54*.

  • Page 5: Air For Combustion And Ventilation

    AIR FOR COMBUSTION VENTILATION 103343 This heater shall not be installed in a confined space unless provisions are provided for adequate combustion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home. Today’s homes are built more energy efficient than ever.
  • Page 6 Example: 2560 cu. ft. (volume of space) 50 cu. ft. = 51.2 or 51,200 (maximum Btu/Hr the space can support) 3. Add the Btu/Hr of all fuel burning appliances in the space. Vent-free heater Gas water heater* Gas furnace Vented gas heater Gas fireplace logs Other gas appliances* Total Example: Gas water heater...

  • Page 7: Ventilation Air

    AIR FOR COMBUSTION VENTILATION Continued 103343 If the area in which the heater may be operated is smaller than that defined as an unconfined space, provide adequate combus- tion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1, 1992, Section 5.3.

  • Page 8: Installing

    INSTALLING A qualified service person must install heater. Follow all local codes. State or local codes may only allow operation of this appliance in a vented configuration. Check your state or local codes. Make sure the remote selector switch is in the OFF position before installing heater.

  • Page 9: Installation And Clearances (Vent-Free Operation Only)

    INSTALLING Continued 103343 INSTALLATION AND CLEARANCES (Vent-Free Operation Only) Maintain the minimum clearances. If you can, provide greater clear- ances from floor, ceiling, and adjoining wall. MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE MATERIALS Log Size Side Wall 24" 16" LOG SIZING REQUIREMENTS Minimum Firebox Size Size Height...
  • Page 10 INSTALLING Continued Minimum Non Combustible Material Clearances If Not Using Mantel Note: If using a mantel, go to page 11. If not using a mantel, follow the informa- tion on this page. You must have non combustible material(s) above the fireplace opening. Non combustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick.
  • Page 11 INSTALLING Continued 103343 Minimum Non Combustible Material Clearances If Using Mantel You must have non combustible material(s) above the fireplace opening. Non combustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have non combustible material behind it. Non combustible material must extend at least 8 inches up (for all models).
  • Page 12 INSTALLING Continued 12" 10" 8" 6" " Minimum Non- Combustible Material Hood (GA6050, GA6052) Figure 7 - Minimum Mantel Clearances When Using Hood If your installation does not meet the above minimum clearances, you must: • operate the logs only with the flue damper open, OR •...

  • Page 13: Installing Heater Base Assembly

    INSTALLING Continued 103343 INSTALLING HEATER BASE ASSEMBLY You must secure this heater to fireplace floor. If not, heater will move when you adjust controls. Moving heater may cause a gas leak. If installing in a sunken fireplace, special care is needed. You must raise the fireplace floor to allow access to heater control panel.
  • Page 14 INSTALLING Continued Fitting Figure 10 - Attaching Flexible Gas Hose to Heater Figure 11 - Attaching Base Assembly to Fireplace Floor Flexible Gas Hose (if allowed by local codes) Masonry Screw Mounting Flanges 103343...

  • Page 15: Connecting To Gas Supply

    INSTALLING Continued 103343 CONNECTING TO GAS SUPPLY A qualified service person must connect heater to gas supply. Follow all local codes. Installation Items Needed Before installing heater, make sure you have the items listed below. • piping (check local codes) •...

  • Page 16: Checking Gas Connections

    INSTALLING Continued Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings. A.G.A. Design-Certified Manual Shutoff Valve With 1/8" NPT Tap* Approved Flexible Gas Hose (if allowed by local codes) Control Figure 12 - Gas Connection * Purchase the optional A.G.A.
  • Page 17 INSTALLING Continued 103343 3. Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter. 4. Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak. 5.

  • Page 18: Installing Logs

    INSTALLING Continued INSTALLING LOGS Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this heater may result in property damage or personal injury. Each log is marked with a number. These numbers will help you identify the log when installing.

  • Page 19: Operating Heater

    OPERATING HEATER 103343 FOR YOUR SAFETY READ BEFORE LIGHTING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance has a pilot which must be lighted by hand. When lighting the pilot, follow these instructions exactly.
  • Page 20 OPERATING HEATER Continued 4. Press in and turn control knob clockwise Selector Switch in OFF Position Ignitor Button Figure 19 - Control Knob and Ignitor Button Location 5. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor.

  • Page 21: Manual Lighting Procedure

    OPERATING HEATER Continued 103343 TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1. Turn control knob clockwise 2. Set remote selector switch in the OFF position to keep from draining battery. Shutting Off Burners Only (pilot stays lit) You may shut off the burners and keep the pilot lit by doing one of the following: •...

  • Page 22: Inspecting Burners

    OPERATING HEATER Continued INSPECTING BURNERS 3. Use the STATUS button on the hand-held remote control unit to see the operation mode being used and the temperature setting selected. A red light will come on beside the operation mode being used when the status button is pressed. 4.

  • Page 23: Cleaning And Maintenance

    CLEANING MAINTENANCE TROUBLE- SHOOTING Note: All troubleshoot- ing items are listed in order of operation. 103343 Turn off heater and let cool before cleaning. You must keep control areas, burner, and circulating air passage- ways of heater clean. Inspect these areas of heater before each use.
  • Page 24 TROUBLE- SHOOTING Continued OBSERVED POSSIBLE PROBLEM CAUSE When ignitor button 1. Gas supply turned off or is pressed, there is manual shutoff valve spark at ODS/pilot closed but no ignition 2. Control knob not in PILOT position 3. Control knob not pressed in while in PILOT position 4.
  • Page 25 TROUBLE- SHOOTING Continued 103343 OBSERVED POSSIBLE PROBLEM CAUSE Burner does light 1. Burner orifice clogged after ODS/pilot is lit 2. Inlet gas pressure is too low 3. Burner orifice diameter is too small 4. Thermopile leads disconnected or improperly connected 5.
  • Page 26 TROUBLE- SHOOTING Continued 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.

  • Page 27: Technical Service

    SERVICE SPECIFICATIONS SERVICE HINTS WIRING DIAGRAM 103343 You may have further questions about installation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-800-DESA LOG (1-800-337-2564). CGD3924NR Btu (Variable) 20,000/39,000 Type Gas Natural Gas Only Ignition Piezo Manifold Pressure 3.5"...

  • Page 28: Replacement Parts

    Parts Not Under Warranty Contact authorized dealers of this product. If they can’t supply original replace- ment part(s), either contact your nearest Parts Central (see Below) or call DESA International’s Parts Department at 1-800-972-7879 for referral information. When calling DESA International, have ready •...

  • Page 29: Accessories

    Purchase these fireplace accessories from your local dealer. If they can not supply these accessories, either contact your nearest Parts Central (see page 28) or call DESA International’s Sales Department at 1-800-972-7879 for referral informa- tion. You can also write to the address listed on the back page of this manual.

  • Page 30: Illustrated Parts Lists

    ILLUSTRATED PARTS BREAKDOWN CGD3924NR 103343...
  • Page 31 PARTS LIST 103343 This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 28 of this manual. PART NUMBER DESCRIPTION 103008-01 Back Log (#1) 103009-01 Middle Log (#2) 103010-01 Front Log (#3) 103011-01 Crossover Log (#4)

  • Page 32: Warranty Information

    COMFORT GLOW VENT-FREE NATURAL GAS LOG HEATERS DESA International warrants this product to be free from defects in materials and components for two (2) 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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