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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
Remote-Ready Models Also Design-Certified As Vented Decorative Appliances
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 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.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
For more information, visit www.desatech.com
24" REMOTE-READy MODELS
CSG3924NRA AND CSG3924PRA
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Summary of Contents for Desa CSG3924NRA
- Page 1 UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL 24" REMOTE-READy MODELS CSG3924NRA AND CSG3924PRA Remote-Ready Models Also Design-Certified As Vented Decorative Appliances 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.
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Page 2: Table Of Contents
TABLE OF CONTENTS Safety ..............2 Cleaning and Maintenance ........ 23 Product Identification ........... 5 Troubleshooting ..........25 Optional Remote Control Accessories ....5 Wiring Diagram ..........29 Local Codes............5 Specifications ............ 29 Unpacking............6 Parts ..............30 Product Features ..........6 Replacement Parts .......... - Page 3 SAFETy Continued WARNING: This product con- WARNING: This appliance is tains and/or generates chemicals for installation only in a solid-fu- known to the State of California el burning fireplace or approved to cause cancer or birth defects ventless firebox enclosure. or other reproductive harm.
- Page 4 SAFETy Continued 8. To prevent the creation of soot, follow the Keep the appliance area clear instructions in Cleaning and Maintenance, and free from combustible ma- page 26. terials, gasoline and other flam- 9. Before using furniture polish, wax, carpet mable vapors and liquids.
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Page 5: Product Identification
PRODUCT IDENTIFICATION Pilot Rear Grate Assembly Burner Selector Switch (Optional) Piezo ON/OFF/ Front Ignitor PILOT Knob Base Burner Assembly Middle Burner Front and Rear Burner Control Remote Control (Optional) Knob Figure 1 - Product Identification OPTIONAL REMOTE CONTROL ACCESSORIES There are four optional remote controls that See Accessories, page 33. -
Page 6: Unpacking
UNPACkING Note: Do not pick up heater base as- CAUTION: Do not remove the sembly by burners. This could damage heater. Always handle base assembly by data plates from the grate as- the sides of assembly. sembly. The data plates contain 2. - Page 7 AIR FOR COMBUSTION AND VENTILATION Continued Unusually tight construction is defined as Example: Space size 20 ft. (length) x 16 ft. construction where: (width) x 8 ft. (ceiling height) = 2,560 cu. ft. (volume of space) a. walls and ceilings exposed to the out- If additional ventilation to adjoining room side atmosphere have a continuous is supplied with grills or openings, add the...
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Page 8: Installation
AIR FOR COMBUSTION AND VENTILATION Continued ceiling and one within 12" of the floor on the WARNING: If the area in which wall connecting the two spaces (see options 1 the heater may be operated does and 2, Figure 2). You can also remove door into not meet the required volume for adjoining room (see option 3, Figure 2). - Page 9 INSTALLATION Continued NOTICE: State or local codes may CAUTION: This heater cre- only allow operation of this appli- ates warm air currents. These ance in a vented configuration. currents move heat to wall sur- Check your state or local codes. faces next to heater.
- Page 10 INSTALLATION Continued Carefully follow the instructions below. This Minimum Noncombustible Material will ensure safe installation into a masonry, Clearances UL127-listed manufactured fireplace or certi- If Not Using Mantel fied vent-free firebox. Note: If using a mantel, proceed to If Using Mantel below.
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Page 11: Mantel Clearances
INSTALLATION Continued Noncombustible Requirements for Material Distance (A) Safe Installation 12" or more Noncombustible material okay. Between 8" Install fireplace hood and 12" accessory (GA6050, GA6052 or GA6053, see Accessories, page 33). Less than 8" Noncombustible material must be extended to at least 8". See Between 8"... - Page 12 INSTALLATION Continued Determining Minimum Mantel Clearance NOTICE: If your installation does when Using a Hood not meet the minimum clear- If minimum clearances in Figure 6 (see page 11) ances shown, you must do one are not met, you must have a hood. When using of the following: a hood there are still certain minimum mantel clearances required.
- Page 13 INSTALLATION Continued INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED Damper OPERATION Note: When used as a vented heater, ap- pliance must be installed only in a solid-fuel Damper burning fireplace with a working flue and con- Clamp structed of noncombustible material. For Massachusetts Residents Only: Instal- Damper Damper...
- Page 14 INSTALLATION Continued IMPORTANT: Make sure the heater burners are level. If heater is not level, heater will not work properly. Installation Items Needed • hardware package (provided with heater) • approved flexible gas hose (if allowed by local codes) • sealant (resistant to propane/LP gas, not Mounting provided) Flange...
- Page 15 INSTALLATION Continued Installation Items Needed Installation must include a equipment shutoff Before installing heater, make sure you have valve, union and plugged 1/8" NPT tap. Locate the items listed below. NPT tap within reach for test gauge hook up. • external regulator (supplied by installer) NPT tap must be upstream from heater (see •...
- Page 16 INSTALLATION Continued into heater controls. If sediment trap is not 4. Check all joints of gas supply piping sys- installed or is installed wrong, heater may tem. Apply a commercial leak detection not run properly. solution to all joints. Bubbles forming show a leak.
- Page 17 INSTALLATION Continued Propane/LP It is very important to install the logs exactly Equipment Supply as instructed. Do not modify logs. Only use Shutoff Valve Tank logs supplied with heater. Before installing logs, make sure log alignment screws are in place and straight. 1.
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Page 18: 2 Www.desatech.com
INSTALLATION Continued 4. Place log #4 onto two alignment screws ATTACHING GRATE TO BASE to the rear of base (see Figure 20). ASSEMBLY 5. Place back of log #5 on notch in log #4 (as Locate the two slots in the front of the base shown in Figure 21), across back part of assembly. -
Page 19: Operation
OPERATION FOR YOUR SAFETY LIGHTING READ BEFORE LIGHTING INSTRUCTIONS WARNING: If you do not fol- WARNING low these instructions exactly, • If fireplace has glass doors, a fire or explosion may result never operate this heater with causing property damage, per- glass doors closed. - Page 20 OPERATION Continued 4. Press in and turn control knobs clockwise CAUTION: Do not try to ad- to the OFF position. just heating levels by using the 5. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the equipment shutoff valve.
- Page 21 OPERATION Continued TO TURN OFF GAS Control Knob Rear Burner TO APPLIANCE Control Knob 1. Turn control knob clockwise to the OFF position. 2. Turn rear burner control knob clockwise to the OFF position. 3a. Set selector switch in the OFF position. Ignitor Button 3b.
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Page 22: Inspecting Burners
OPERATION Continued Digital heat from the fireplace will turn off the fire- Indicator Display place. Ideally, place hand-held remote in the Light Shows center of the room facing towards fireplace. AUTO Locks Temperature ROOM Note: Do not hold the hand-held remote for TEMP TEMP System to... -
Page 23: Cleaning And Maintenance
INSPECTING BURNERS Continued Note: The pilot flame on natural gas units will If front and/or middle burner flame patterns have a slight curve, but flame should be blue are incorrect, as shown in Figure 32 and have no yellow or orange color. •... - Page 24 CLEANING AND MAINTENANCE Continued Ports/Slots 1. Shut off unit, including pilot. Allow unit to cool for at least thirty minutes. Injector 2. Inspect burners, pilot and primary air inlet Holder holes on injector holder for dust and dirt (see Figures 33 or 34). 3.
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Page 25: 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 26 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame 1. Control knob not fully 1. Press in control knob fully goes out when control knob pressed in is released 2. Control knob not pressed in 2. After ODS/pilot lights, keep long enough control knob pressed in 30 seconds...
- Page 27 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Yellow flame in front/middle 1. Not enough air 1. Check burner(s) for dirt burner during burner com- and debris. If found, clean bustion burner(s) (see Cleaning and Maintenance, page 23) 2. Gas regulator defective 2.
- Page 28 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.
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Page 29: Wiring Diagram
• Ignition: Piezo • Manifold Pressure: 8" W.C. • Inlet Gas Pressure (in. of water): Maximum 14" W.C., Minimum* 11" W.C. • Certified Standards: Z21.11.2-2007, Z21.60-1996, CGA2.26-M96 CSG3924NRA • 10,000/40,000 Btu/hr • Type Gas: Natural • Ignition: Piezo • Manifold Pressure: 3" W.C. -
Page 30: Parts
PARTS REMOTE-READY MODELS CSG3924NRA AND CSG3924PRA Items 12 & 22 Natural Gas Models Only www.desatech.com 123639-01D... - Page 31 PARTS REMOTE-READY MODELS This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 32 of this manual. NO. PART NO. DESCRIPTION Burner Carriage • • 110328-01 Front and Rear Burner Tube •...
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Page 32: Replacement Parts
PARTS LOG MODELS CSG3924NRA AND CSG3924PRA PART NO. DESCRIPTION QTY. 110020-03 Log Set 110103-02 Log Ember Bed 110107-01 Log, Right Front 110107-02 Log, Left Front 110107-03 Log, Back 110107-04 Log, Right Crossover 110104-01 Log, Left Crossover REPLACEMENT PARTS Log Set for Models: CSG3924NT, CSG3924PT Note: Use only original replacement parts. -
Page 33: Accessories
ACCESSORIES NOTICE: All accessories may not be available for all fireplace models. Purchase these accessories from your RECEIVER AND HAND-HELD local dealer. If they can not supply these THERMOSTAT REMOTE CONTROL accessories call DESA Heating, LLC at KIT - HRC200 1-866-672-6040 for information. - Page 34 NOTES ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ www.desatech.com 123639-01D...
- Page 35 NOTES ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ 123639-01D www.desatech.com...
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Page 36: Warranty
WARRANTy kEEP THIS WARRANTy Model (located on product or identification tag) _____________________________ Serial No. (located on product or identification tag) __________________________ Date Purchased __________________________ Keep receipt for warranty verification. DESA HEATING, LLC LIMITED WARRANTIES New Products Standard Warranty: DESA Heating, LLC warrants this new product and any parts thereof to be free from defects in material and workmanship for a period of one (1) year from the date of first purchase from an authorized dealer provided the product has been installed, maintained and operated in accordance with DESA Heating, LLC’s warnings and instructions.