Desa CGD3924N - Manuals - manualsarea.com

Page 2 - CONTENTS; SECTION; SAFETY; WARNINGS; Carbon monoxide poisoning may lead to death!; Natural Gas

2 102828 CONTENTS SECTION PAGE SAFETY INFORMATION WARNINGS IMPORTANT: Read this owner’s manual carefully and completely beforetrying to assemble, operate, or service this heater. Improper use of thisheater can cause serious injury or death from burns, fire, explosion,electrical shock, and carbon mon...

Page 3 - Continued

3 102828 SAFETY INFORMATION Continued WARNINGS 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 o...

Page 5 - WARNING; Unconfined Space; PROVIDING ADEQUATE VENTILATION; Unusually Tight Construction; and

5 102828 AIR FOR COMBUSTION AND VENTILATION WARNING This heater shall not be installed in a confined space unlessprovisions are provided for adequate combustion and ventilationair. Read the following instructions to insure proper fresh air forthis and other fuel-burning appliances in your home. Toda...

Page 6 - Determining if You Have a Confined or Unconfined Space

6 102828 AIR FOR COMBUSTION AND VENTILATION 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 adjoin...

Page 7 - VENTILATION AIR; Ventilation Air From Inside Building; Figure 3 - Ventilation Air from Outdoors; Ventilation Air From Outdoors; Figure 2 - Ventilation Air from Inside Building

7 102828 AIR FOR COMBUSTION AND VENTILATION Continued WARNING If the area in which the heater may be operated is smaller thanthat defined as an unconfined space, provide adequate combus-tion and ventilation air by one of the methods described in theNational Fuel Gas Code, ANSI Z223.1, 1992, Section ...

Page 8 - INSTALLING; Never install the heater; CHECK GAS TYPE; Vent-free heaters add moisture to the air. Although this is benefi-

8 102828 INSTALLING NOTICE A qualified service person must install heater. Follow all local codes. WARNING Before installing in a solid fuel burning fireplace, the chimney flueand firebox must be cleaned of soot, creosote, ashes and loose paintby a qualified chimney cleaner. Creosote will ignite if ...

Page 9 - Minimum Wall and Ceiling Clearances (see Figure 4); should not be less than 16 inches.; LOG SIZING REQUIREMENTS

9 102828 INSTALLATION AND CLEARANCES (Vent-Free Operation Only) WARNING Maintain the minimum clearances. If you can, provide greater clear-ances from floor, ceiling, and adjoining wall. INSTALLING Continued Carefully follow the instructions below. This will ensure safe installation into amasonry or ...

Page 10 - NOTICE; Installing Damper Clamp; Minimum Non Combustible Material Clearances; If you cannot meet these minimum clearances, you must operate; Requirements for

10 102828 INSTALLING Continued NOTICE You may use this heater as a vented product. If so, you mustalways run heater with chimney flue damper open. If runningheater with damper open, non-combustible material above fire-place opening is not needed. Go to Installing Damper Clamp Accessory for Vented Op...

Page 11 - If Using Mantel; Mantel Clearances

11 102828 INSTALLING Continued Minimum Non Combustible Material Clearances If Using Mantel You must have non combustible material(s) above the fireplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inchthick. With sheet metal, you must have non combustib...

Page 12 - Floor Clearances

12 102828 14"Min. Combustible Material Non-Combustible Material Hearth 5"Min. Combustible Material Minimum Non-Combustible Material 8"Min. 12" 15" 18" All minimum distances arein inches Log Set 24" Model 20" 2 1 /2 " 6" 8" 10" 12" Distances to Unde...

Page 14 - Make sure the heater burner is level. If heater is not level, heater; Installation Items Needed; Hold gas regulator with wrench when connecting flexible gas hose.

14 102828 INSTALLING Continued INSTALLING HEATER BASE ASSEMBLY IMPORTANT: Make sure the heater burner is level. If heater is not level, heater will not work properly. Installation Items Needed • hardware package (provided with heater)• approved flexible gas hose (not provided) (if allowed by local c...

Page 15 - Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator; Figure 12 - Attaching Base Assembly to Fireplace Floor

15 102828 INSTALLING Continued Masonry Screw MountingBracket Heater GasRegulator 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

Page 16 - CAUTION

16 102828 INSTALLING 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 LP ga...

Page 17 - Figure 13 - Gas Connection; CHECKING GAS CONNECTIONS; Pressure Testing gas Supply Piping system; Test Pressures In Excess Of 1/2 PSIG

17 102828 Tee Joint Pipe Nipple Cap 3" Minimum Sediment Trap GasRegulator From Gas Meter (5" W.C.** to 10.5" W.C. Pressure) A.G.A. Design-CertifiedManual Shutoff ValveWith 1/8" NPT Tap* Approved FlexibleGas Hose (if allowedby local codes) CAUTION Avoid damage to regulator. Hold gas r...

Page 18 - Test Pressures Equal To or Less Than 1/2 PSIG; gas valve located on or near gas meter.; Pressure Testing Heater Gas Connections; internal joints for leaks.; Figure 14 - Manual Shutoff Valve; Figure 15 - Checking Gas Joints

18 102828 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-c...

Page 19 - INSTALLING LOGS

19 102828 INSTALLING Continued WARNING Failure to position the parts in accordance with these diagrams or failureto use only parts specifically approved with this heater may result inproperty damage or personal injury. INSTALLING LOGS Each log is marked with a number. These numbers will help you ide...

Page 20 - FOR YOUR SAFETY READ BEFORE LIGHTING; LIGHTING INSTRUCTIONS; fireplace screen is closed before running heater.

20 102828 OPERATING HEATER 1. STOP! Read the safety information above. 2. Make sure manual shutoff valve is fully open. 3. Press and turn control knob clockwise to the OFF position. Figure 20 - Control Knob and Ignitor Button Location Control Knob Ignitor Button 4. Wait five (5) minutes to clear out...

Page 21 - TO TURN OFF GAS TO APPLIANCE; Shutting Off Heater; Do not operate heater between PILOT and HIGH positions.; VARIABLE CONTROL OPERATION

21 102828 OPERATING HEATER Continued TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1. Press in and turn control knob clockwise to the HIGH position. 2. Turn control knob clockwise to the pilot position. 3. Press in control knob and turn clockwise to the OFF position. Shutting Off Burners Only (pi...

Page 22 - Check pilot flame pattern and burner flame patterns often.; PILOT FLAME PATTERN; Figure 22 - Correct Pilot; Figure 23 - Incorrect Pilot; MANUAL LIGHTING PROCEDURE; release control knob. Now follow step 8 on page 21.; OPERATING

22 102828 INSPECTING BURNERS Check pilot flame pattern and burner flame patterns often. PILOT FLAME PATTERN Figure 22 shows a correct pilot flame pattern. Figure 23 shows an incorrect pilot flamepattern. The incorrect pilot flame is not touching the thermocouple. This will cause thethermocouple to c...

Page 23 - Turn off heater and let cool before cleaning.; SHOOTING; ing items are listed in; REMEDY; LOGS

23 102828 CLEANING AND MAINTENANCE WARNING 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 eachuse. Have heater inspected yearly by a qualified service person.Heater may ...

Page 26 - If you smell gas; See Warning; Operating heater where impurities in air exist may create odors.

26 102828 TROUBLE- SHOOTING 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 n e i g h b o r ’ s p h o n e . F o l l o w t h e g a ssup...

Page 27 - SPECIFICATIONS; When gas pressure is too low; SERVICE

27 102828 TECHNICAL SERVICE You may have further questions about installation, operation, or troubleshooting.If so, contact DESA International’s Technical Service Department at1-800-DESA LOG (1-800-337-2564). SPECIFICATIONS 24" Model Btu (Variable) 20,000/39,000 Type Gas Natural Gas Only Ignitio...

Page 28 - age for parts replaced under warranty.; Parts Under Warranty; Parts Not Under Warranty; When calling DESA International, have ready; REPLACEMENT

28 102828 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 Departme...

Page 29 - ACCESSORIES

29 102828 ACCESSORIES Purchase these fireplace accessories from your local dealer. If they can not supplythese accessories, call DESA International’s Sales Department at 1-800-972-7879for referral information. You can also write to the address listed on the back pageof this manual. MANUAL SHUTOFFVAL...

Page 31 - PARTS LIST

31 102828 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. PARTS LIST CGD3924N KEYNO. PART NUMBER DESCRIPTION QTY. 1 103008-01 Back Log (#1) 1 2 103009-01 Middle Log (#2) 1 3 103010-01 Fron...

Page 32 - KEEP THIS WARRANTY; WARRANTY INFORMATION

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 thedate of first purchase, provided that the product has been properly installed, operated and maintained in accordance w...