Desa CGD3924NT, CGD3930NT, CGD3018NT, CGB3924NT, CGB3930NT, CCL3018NT, CCL3924NT, CCL3930NT

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VENT-FREE NATURAL GAS LOG HEATER

SAFETY

INFORMATION

WARNINGS

IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, oper- ate, or service this heater. Im- proper use of this heater can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning.

DANGER: Carbon monoxide poisoning may lead to death!

Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, or nausea. If you have these signs, the heater may not be working properly. Get fresh air at once! Have heater serviced. Some people are more affected by carbon monoxide than others. These include pregnant women, people with heart or lung disease or anemia, those under the influence of alcohol, and those at high altitudes.

Natural Gas: Natural gas is odorless. An odor-making agent is added to the gas. The odor helps you detect a gas leak. However, the odor added to the gas can fade. Gas may be present even though no odor exists.

Make certain you read and understand all warnings. Keep this manual for reference. It is your guide to safe and proper operation of this heater.

WARNING: Any change to this heater or its controls can be dangerous.

WARNING: Do not allow fans to blow directly into the fireplace. Avoid any drafts that alter burner flame patterns. Ceiling fans can create drafts that alter burner flame patterns. Altered burner patterns can cause sooting.

WARNING: Do not use a blower insert, heat exchanger insert or other accessory not ap- proved for use with this heater.

Due to high temperatures, the appliance should be located out of traffic and away from furniture and draperies.

Do not place clothing or other flammable material on or near the appliance. Never place any objects on the heater.

Heater base assembly becomes very hot when running heater. Keep children and adults away from hot surface to avoid burns or clothing ignition. Heater will remain hot for a time after shut- down. Allow surface to cool be- fore touching.

Carefully supervise young chil- dren when they are in the room with heater.

You must operate this heater with a fireplace screen in place. Make sure fireplace screen is closed before running heater.

Keep the appliance area clear and free from combustible materials, gasoline, and other flammable vapors and liquids.

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 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

3.This heater shall not be installed in a bedroom or bathroom, unless installed as a vented appliance (Variable Manu- ally-Controlled Models Only). See In- stalling Damper Clamp Accessory for Vented Operation, page 10.

4.Before installing in a solid fuel burn- ing fireplace, the chimney flue and fire- box 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. If damaged, operate heater with flue damper closed.

5.If fireplace has glass doors, never op- erate this heater with glass doors closed. If you operate heater with doors closed, heat buildup inside fireplace will cause glass to burst. Also if fireplace open- ing has vents at the bottom, you must open the vents before operating heater.

6.This log heater is designed to be smoke- less. If logs ever appear to smoke, turn off heater and call a qualified service person. Note: During initial operation, slight smoking could occur due to log curing and heater burning manufacturing residues.

7.To prevent the creation of soot, follow the instructions in Cleaning and Main- tenance, page 21.

8.Before using furniture polish, wax, car- pet cleaner, or similar products, turn heater off. If heated, the vapors from these products may create a white pow- der residue within burner box or on adjacent walls or furniture.

9.This heater needs fresh, outside air ven- tilation to run properly. This heater has an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if not enough fresh air is available. See Air for Combustion and Ventilation, pages 4 through 6. If heater keeps shutting off, see Trouble- shooting, pages 22 through 24.

10.Do not run heater

•where flammable liquids or vapors are used or stored

•under dusty conditions

11.Do not use this heater to cook food or burn paper or other objects.

12.Do not use heater if any part has been exposed to or under water. Immediately call a qualified service technician to in- spect the room heater and to replace any part of the control system and any gas control which has been under water.

13.Do not operate heater if any log is bro- ken. Do not operate heater if a log is chipped (dime-sized or larger).

For more information, visit www.desatech.com

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Contents CGD3930N What to do if YOU Smell GASCGD3924N CY3124N Safety Information VENT-FREE Natural GAS LOG HeaterLocal Codes Product FeaturesProduct Identification UnpackingPiezo Ignition System Safety PilotAIR for Combustion and Ventilation Providing Adequate VentilationDetermining if You Have a Confined or Unconfined Space AIR for Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation Air From Outdoors Ventilation AIRVentilation Air From Inside Building Check GAS Type InstallationInstallation Minimum Fireplace Clearance To Combustible MaterialsIf Not Using Mantel Minimum Noncombustible Material ClearancesFloor Clearances Determining Minimum Mantel Clearance When Using a HoodMantel Clearances Determining Minimum Mantel ClearanceHeight ft Flue Opening sq. ins Installing Damper Clamp Accessory for Vented OperationChimney Installing Heater Base Assembly Installation Items NeededConnecting to GAS Supply Gas ConnectionChecking GAS Connections Pressure Testing Gas Supply Piping systemPressure Testing Heater Gas Connections Installing Logs Dual Burner Smoky Mountain Oak ModelsInstalling Back Log #2 Dual Burner Premium Aged Split Oak ModelsDual Burner Biltmore Split Oak Models Front Log #1 Grate Fingers Grate BaseInstalling Crossover Log #6 CCL3930NTA Shown Single Burner Mountain Oak ModelsLighting Instructions For Your Safety Read Before LightingOperating Heater To Turn OFF GAS To Appliance Manual Lighting ProcedureVariable Control Operation Shutting Off HeaterThermostat Control Operation Inspecting BurnersPilot Flame Pattern Burner Primary AIR Holes Cleaning and MaintenanceCleaning Burner Injector Holder and Pilot AIR Inlet Hole Main BurnerTroubleshooting Observed Problem Possible Cause RemedyMaintenance, Top Gas leak. See Warning statement at topOptional Positioning of Thermostat Sensing Bulb For Masonry and Factory- built Metal FireplaceSpecifications Replacement PartsService Hints Parts Central Technical ServiceAccessories Fireplace HoodIllustrated Parts Breakdown Parts List CGD3018N CGD3924N CGD3930NCGB3924NT CGB3930NT Thermostatically-Controlled Premium Aged Split Oak ModelsCGB3924NT CGB3930NT CGD3018NT CGD3924NT CGD3930NT CGD3018NT CGD3924NT CGD3930NT CCL3018NT Thermostatically-Controlled Biltmore Split Oak ModelCCL3018NT CCL3924NT CCL3924NT CCL3930NTA CCL3930NTA Variable Manually-Controlled Mountain Oak Models CY2718N CY3124N Warranty Information Keep this Warranty

CGD3924NT, CGD3930NT, CGD3018NT, CGB3924NT, CGB3930NT, CCL3018NT, CCL3924NT, CCL3930NT specifications

Desa has garnered significant attention in the heating industry with its impressive lineup of products, specifically the CGD3924NT, CGD3930NT, CGD3018NT, CGB3924NT, CGB3930NT, CCL3018NT, CCL3924NT, and CCL3930NT. These models showcase a blend of efficiency, functionality, and aesthetic appeal, catering to diverse residential and commercial heating needs.

The CGD3924NT and CGD3930NT are designed as gas fireplaces that enhance indoor spaces while offering superior performance. The CGD3924NT features an elegant design with a 24-inch burning area, conceived to generate efficient heat while maintaining an inviting ambiance. Its straightforward controls allow users to adjust heat levels effortlessly. Conversely, the CGD3930NT extends a bit larger with a 30-inch burning area, strategizing for more extensive heating requirements in larger spaces without sacrificing style or efficiency.

Turning to the CGB series, the CGB3924NT and CGB3930NT models emphasize versatility along with a striking appearance. These gas-burning fireplaces are engineered to provide reliable performance and can easily integrate into a variety of home designs. Both models feature advanced safety measures, including an automatic shut-off system and durable construction that ensures longevity.

For those seeking a classic, timeless look, the CCL series offers the CCL3018NT, CCL3924NT, and CCL3930NT models. These corner gas logs are designed for minimal aesthetic disruption, providing warmth from a unique angle. The CCL3018NT serves well for modest spaces, while the CCL3924NT and CCL3930NT cater to larger areas, focusing on enhanced heat distribution without overwhelming the room's decor.

Across the range, energy efficiency is a signature characteristic, with advanced heating technologies like electronic ignition and variable flame control that optimize fuel usage without compromising output. Each model proudly bears compliance with industry safety standards, ensuring user peace of mind.

In conclusion, the Desa series – consisting of the CGD3924NT, CGD3930NT, CGD3018NT, CGB3924NT, CGB3930NT, CCL3018NT, CCL3924NT, and CCL3930NT – embodies technological advancement with a commitment to user-friendliness and style. These products are designed to not only heat spaces effectively but also add a touch of sophistication and comfort to any environment. With a focus on reliability and aesthetics, Desa continues to stand at the forefront of heating solutions.
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