Instruction/ maintenance manual of the product CGD3924NR Desa
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Save this manual for future reference. 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.
2 103343 CONTENTS SECTION PAGE SAFETY INFORMA TION W ARNINGS 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, electrical shock, and carbon monoxide poisoning.
3 103343 SAFETY INFORMA TION Continued W ARNINGS Continued WARNING: Any change to this heater or its controls can be dangerous. 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.
4 103343 AUTO MAN OFF STATUS ON LO HI TEMP PRODUCT IDENTIFICA TION Figure 1 - Vent-Free Gas Log Heater LOCAL CODES 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*.
5 103343 AIR FOR COMBUSTION AND VENTILA TION W ARNING 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.
6 103343 AIR FOR COMBUSTION AND VENTILA TION Continued DETERMINING AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this work sheet to determine if you have a confined or unconfined space.
7 103343 AIR FOR COMBUSTION AND VENTILA TION Continued W ARNING 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.
8 103343 INST ALLING NOTICE A qualified service person must install heater. Follow all local codes. W ARNING Before installing in a solid fuel burning fireplace, the chimney flue and firebox must be cleaned of soot, creosote, ashes and loose paint by a qualified chimney cleaner.
9 103343 INSTALLATION AND CLEARANCES (Vent-Free Operation Only) W ARNING Maintain the minimum clearances. If you can, provide greater clear- ances from floor, ceiling, and adjoining wall. INST ALLING Continued Carefully follow the instructions below. This will ensure safe installation into a masonry or U.
10 103343 INST ALLING Continued Heat Resistant Material (A) 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.
11 103343 INST ALLING Continued 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.
12 103343 14" Min. Combustible Material Non-Combustible Material Hearth 5" Min. Combustible Material Minimum Non- Combustible Material 8" Min.
13 103343 INST ALLING Continued INSTALLING HEATER BASE ASSEMBLY IMPORTANT: Make sure the heater burners are level. If heater is not level, heater will not work properly.
14 103343 INST ALLING Continued Masonry Screw Mounting Flanges Flexible Gas Hose (if allowed by local codes) Figure 10 - Attaching Flexible Gas Hose to Heater Fitting Figure 11 - Attaching Base Assemb.
15 103343 INST ALLING Continued CONNECTING TO GAS SUPPLY NOTICE 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.
16 103343 Tee Joint Pipe Nipple Cap 3" Minimum Sediment Trap Gas Control From Gas Meter (5" W.C.** to 10.5" W.C. Pressure) A.G.A. Design-Certified Manual Shutoff Valve With 1/8" NPT Tap* Approved Flexible Gas Hose (if allowed by local codes) CAUTION Avoid damage to regulator.
17 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.
18 103343 3 INST ALLING Continued W ARNING 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. INSTALLING LOGS Each log is marked with a number.
19 103343 1. STOP! Read the safety information above. 2. Make sure manual shutoff valve is fully open. 3. Set remote selector switch in the OFF position. FOR YOUR SAFETY READ BEFORE LIGHTING W ARNING If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
20 103343 O F F P I L O T O N L O I H REMO TE OFF ON 4. Press in and turn control knob clockwise to the OFF position. Figure 19 - Control Knob and Ignitor Button Location Control Knob Ignitor Button Selector Switch in OFF Position Flame Adjustment Knob OPERA TING HEA TER Continued 5.
21 103343 OPERA TING HEA TER Continued T O TURN OFF GAS TO APPLIANCE Shutting Off Heater 1. Turn control knob clockwise to the OFF position. 2. Set remote selector switch in the OFF position to keep from draining battery.
22 103343 OPERA TING HEA TER Continued TEMP ST A TUS HI LO MAN ON AUT O OFF Increases Room Temperature Decreases Room Temperature Turns Burners On and Off Shows Current Operation Mode Shows Temperature Setting Allows Burners to be Turned On and Off with the Hand- Held Remote Unit.
23 103343 CLEANING AND MAINTENANCE W ARNING Turn off heater and let cool before cleaning. CAUTION You must keep control areas, burner, and circulating air passage- ways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualified service person.
24 103343 TROUBLE- SHOOTING Continued REMEDY 1. Turn on gas supply or open manual shutoff valve 2. Turn control knob to PILOT position 3 . Press in control knob while in PILOT position 4. Continue holding down control knob. Repeat igniting operation until air is removed 5.
25 103343 OBSERVED PROBLEM Burner does light after ODS/pilot is lit Delayed ignition burner Burner backfiring during combustion Slight smoke or odor during initial operation Moisture/condensa- tion noticed on windows Heater produces a whistling noise when burner is lit REMEDY 1.
26 103343 TROUBLE- SHOOTING Continued W ARNING 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.
27 103343 TECHNICAL SERVICE 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). SPECIFICA TIONS CGD3924NR Btu (Variable) 20,000/39,000 Type Gas Natural Gas Only Ignition Piezo Manifold Pressure 3.
28 103343 Note: Use only original replacement parts. This will protect your warranty cover- age for parts replaced under warranty. Parts Under Warranty Contact authorized dealers of this product. If they can’t supply original replace- ment part(s), call DESA International’s Technical Service Department at 1-800-DESA LOG (1-800-337-2564).
29 103343 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.
30 103343 ILLUSTRA TED P ARTS BREAKDOWN CGD3924NR 7 16 16 17 25 16 3 2 1 4 11 21 10 9 12 15 8 19 18 20 6 14 5 13 27 26 26 REMOTE OFF ON 22 23 24 O F F P I L O T O N H I L O O F F P I L O T O N H I L O.
31 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.
LIMITED WARRANTY 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.
An important point after buying a device Desa CGD3924NR (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Desa CGD3924NR yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Desa CGD3924NR - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Desa CGD3924NR you will learn all the available features of the product, as well as information on its operation. The information that you get Desa CGD3924NR will certainly help you make a decision on the purchase.
If you already are a holder of Desa CGD3924NR, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Desa CGD3924NR.
However, one of the most important roles played by the user manual is to help in solving problems with Desa CGD3924NR. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Desa CGD3924NR along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
