Desa CGD3930N manual

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. — WHAT TO DO IF YOU SMELL GAS ?[...]

2 102990 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. DANGER Carbon monoxide poi[...]

3 102990 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. 2. If you smell gas • shut off gas supply • do not try to light any appl[...]

4 102990 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*. *Available from: American National Standards Institute, Inc. 1430 Broadway New York, NY 1001[...]

5 102990 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. Today’s homes are built more energy efficient t[...]

6 102990 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. Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilatio[...]

7 102990 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 Z223.1, 1992, Section 5.3. VENTILATION AIR Ventilation Air From Ins[...]

8 102990 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. Creosote will ignite if highly heated. Inspect chimney flue for damage[...]

9 102990 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.L. listed manufactured fireplace. Minimum Wa[...]

10 102990 INST ALLING Continued NOTICE You may use this heater as a vented product. If so, you must always run heater with chimney flue damper open. If running heater with damper open, non-combustible material above fire- place opening is not needed. Go to Installing Damper Clamp Accessory for Vented Operation, page 13. Heat Resistant Material (A) [...]

11 102990 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. With sheet metal, you must have non combustible material behind it. Non combustible material[...]

12 102990 14" Min. Combustible Material Non-Combustible Material Hearth 5" Min. Combustible Material Minimum Non- Combustible Material 8" Min. 12" 15" 18" All minimum distances are in inches Log Set 18", 24", 30" Models 20" 2 1 /2 " 6" 8" 10" 12" Distances to Underside of Ma[...]

13 102990 INST ALLING Continued INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION 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 non combustible material. If your heater is a manually controlled model, you may use this heater as a vented product. Th[...]

14 102990 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. For thermostat models, avoid damage to thermostat bulb. Avoid nicks or sharp bends in thermostat bulb wire. Keep thermostat bulb in mounting bracket. Installation Items Needed • [...]

15 102990 INST ALLING Continued Masonry Screw Mounting Bracket Heater Gas Regulator Flexible Gas Hose (if allowed by local codes) Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator Fitting Figure 12 - Attaching Base Assembly to Fireplace Floor[...]

16 102990 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. • piping (check local codes) • sealant (resistant to propane/LP gas) • manual shutoff valve * • t[...]

17 102990 Tee Joint Pipe Nipple Cap 3" Minimum Sediment Trap Gas Regulator 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. Hold gas regulator with wrench when connecting it t[...]

18 102990 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. Correct all leaks at once. 6. Re-connect heater and manual shutoff valve to gas sup[...]

19 102990 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. These numbers will help you identify the log when installing. It is very impo[...]

20 102990 1. STOP! Read the safety information above. 2. Make sure manual shutoff valve is fully open. 3. Press in and turn control knob clockwise Clockwise to the OFF position. 4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information above. If you [...]

21 102990 T O TURN OFF GAS T O APPLIANCE Shutting Off Heater 1. Press in and turn control knob clockwise Clockwise to the HIGH position. 2. Turn control knob clockwise Clockwise to the pilot position. 3. Press in control knob and turn clockwise Clockwise to the OFF position. Shutting Off Burners Only (pilot stays lit) 1. Turn control knob clockwise[...]

22 102990 MANUAL LIGHTING PROCEDURE 1. Follow steps 1 through 5 under Lighting Instructions, pages 20 and 21. 2. Depress control knob and light pilot with match. 3. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Now follow step 8 on page 21. OPERA TING HEA TER Manually- Controlled Models Co[...]

23 102990 LO HI OFF Pilot Figure 22 - Control Knob and Ignitor Button Location 4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information above. If you don’t smell gas, go to the next step. 5. Turn control knob counterclockwise C-clockwise to the PI[...]

24 102990 INSPECTING BURNERS Check pilot flame pattern and burner flame patterns often. PILOT FLAME PATTERN Figure 24 shows a correct pilot flame pattern. Figure 25 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 wil[...]

25 102990 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. Heater may need more frequent cleaning due to excessive l[...]

26 102990 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. Clean ODS/pilot (see Cleaning and Mainte- nance , page 25) or replace ODS/pi[...]

27 102990 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. Clean burner (see Cleaning and Mainte- nance , page 25) or replace bur[...]

28 102990 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. Follow the gas supplier’s instructions. • If you cannot reach your gas su[...]

29 102990 OPTIONAL POSITIONING OF THERMOST A T SENSING BULB For Masonry and Factory-built Metal Fireplace If your log set cycles to pilot, but the room temperature drops to a lower than ideal comfort level before the log set comes back on, you may want to reposition the thermostat sensing bulb. The thermostat sensing bulb is loca ted near the gas v[...]

30 102990 OPTIONAL POSITIONING OF THERMOST A T SENSING BULB For Masonry and Factory-built Metal Fireplace Continued Adhesive-backed Mounting Clip Figure 29 - Locating Thermostat Sensing Bulb on Masonry Fireplace Thermostat Sensing Bulb If you hav e a factory-b uilt metal f ireplace, see Figure 30 for location. Adhesive-backed Mounting Clip Thermost[...]

31 102990 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 18" Model 24" Models 30" Model Btu (Variable) 16,000/30,000 20,000/39,000 20,000/39,0000 Type Gas Natural [...]

32 102990 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). When c[...]

33 102990 ACCESSORIES Purchase these fireplace accessories from your local dealer. If they can not supply these accessories, call DESA International’s Sales Department at 1-800-972-7879 for referral information. You can also write to the address listed on the back page of this manual. MANUAL SHUTOFF VALVE - GA5010 For all models. Manual shutoff v[...]

34 102990 ILLUSTRA TED P ARTS BREAKDOWN V ariable Manually- Controlled Models CGD3018N CGD3924N CGD3930N 5 3 2 1 4 22 11 12 13 21 8 22 22 6 7 10 9 16 15 17 19 23 18 14 19 24 20-2 20-1 20 18 25[...]

35 102990 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. P ARTS LIST KEY CGD3018N CGD3924N CGD3930N NO. PART NUMBER PART NUMBER PART NUMBER DESCRIPTION QTY. 1 103008-02 103008-01 103008-03 Back Log (#1) 1 2 103009-02 103009-01 103009-03[...]

36 102990 ILLUSTRA TED P ARTS BREAKDOWN Thermostatically- Controlled Manuals 5 22 22 22 3 2 1 4 21 8 6 7 11 12 13 9 10 17 19 19 24 20-2 20-1 20 18 23 25 16 22 15 14 CGD3924NT[...]

37 102990 This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 33 of this manual. P ARTS LIST KEY CGD3924NT NO. PART NUMBER DESCRIPTION QTY. 1 103008-01 Back Log (#1) 1 2 103009-01 Middle Log (#2) 1 3 103010-01 Front Log (#3) 1 4 103011-01 Crossover Log (#4) 1 [...]

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39 102990 NOTES ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ _________[...]

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 one (1) year from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions. To make a claim [...]