Desa installation manual Inspecting Burners, Cleaning and Maintenance

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OPERATING HEATER (THERMOSTATICALLY-CONTROLLED MODELS)

Thermostat Control Operation

Manual Lighting Procedure

INSPECTING BURNERS

CLEANING AND MAINTENANCE

OPERATING HEATER

Continued

THERMOSTAT

CONTROL OPERATION

The thermostat control knob can be set to any comfort level between HI and LO. The thermostat will gradually modulate the heat output and flame height from higher to lower settings, or pilot, in order to maintain the comfort level you select. The ideal comfort setting will vary by household depending upon the amount of space to be heated, the output of the central heating system, etc.

Note: Selecting the HI setting with the control knob will cause the burners to remain fully on, without modulating down in most cases.

BURNER PRIMARY AIR HOLES

Air is drawn into the burner through the holes in the fitting at the entrance to the burner. These holes may become blocked with dust or lint. Periodically inspect these holes for any blockage and clean as necessary. Blocked air holes will create soot.

MAIN BURNER

Periodically inspect all burner flame holes with the heater running. All slotted burner flame holes should be open with yellow flame present. All round burner flame holes should be open with a small blue flame present. Some burner flame holes may become blocked by debris or rust, with no flame present. If so, turn off heater and let cool, Remove blockage, blocked burner flame holes will create soot.

MANUAL LIGHTING

PROCEDURE

1.Follow steps 1 through 5 under Lighting Instructions, page 19.

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 under Lighting Instructions, page 19.

INSPECTING BURNERS

Check pilot flame pattern and burner flame patterns often.

PILOT FLAME PATTERN

Figure 42 shows a correct pilot flame pattern. Figure 43 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 will shut down.

If pilot flame pattern is incorrect, as shown in Figure 44

•turn heater off (see To Turn Off Gas to Appliance, page 18 for manually-controlled models or page 19 for thermostat-controlled models)

•see Troubleshooting, pages 22 through 24

Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.

Thermocouple

Thermocouple

Pilot Burner

Pilot Burner

Figure 42 - Correct Pilot

Figure 43 - Incorrect Pilot

Flame Pattern

Flame Pattern

CLEANING AND MAINTENANCE

WARNING: Turn off heater and let cool before cleaning.

CAUTION: You must keep control areas, burner, and circulating air passageways of heater clean. In- spect these areas of heater before each use. Have heater inspected yearly by a qualified service person. Heater may need more frequent cleaning due to exces- sive lint from carpeting, bedding material, pet hair, etc.

CLEANING BURNER INJECTOR HOLDER AND PILOT AIR INLET HOLE

The primary air inlet holes allow the proper amount of air to mix with the gas. This provides a clean burning flame. Keep these holes clear of dust, dirt, lint, and pet hair. Clean these air inlet holes prior to each heating season. Blocked air holes will create soot. We recommend that you clean the unit every three months during operation and have heater inspected yearly by a qualified service person.

We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt. To clean these parts we recommend using compressed air no greater than 30 PSI. Your local computer store, hardware store, or home center may carry compressed air in a can. You can use a vacuum cleaner in the blow position. If using compressed air in a can, please follow the directions on the can. If you don't follow directions on the can, you could damage the pilot assembly.

1.Shut off the unit, including the pilot. Allow the unit to cool for at least thirty minutes.

2.Inspect burner, pilot, and primary air inlet holes on injector holder for dust and dirt (see Figure 44, page 21).

3.Blow air through the ports/slots and holes in the burner.

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Contents OWNER’S Operation Installation Manual Unvented VENT-FREE Natural GAS LOG HeatersBiltmore Split OAK, Seasonal OAK, Smoky Mountain OAK Logs What to do if YOU Smell GASTable of Contents Safety InformationProduct Identification Local Codes Product Features AIR for Combustion and VentilationUnpacking Determining if You Have a Confined or Unconfined Space Determining FRESH-AIR Flow for Heater LocationConfined and Unconfined Space Ventilation Air From Outdoors Ventilation AIRVentilation Air From Inside Building Installation InstallationCheck GAS Type Minimum Firebox Size Log Front Rear Height Depth WidthIf Not Using Mantel Minimum Noncombustible Material ClearancesDetermining Minimum Mantel Clearance When Using a Hood Mantel ClearancesFloor Clearances Determining Minimum Mantel ClearanceInstalling Damper Clamp Accessory for Vented Operation Installing Heater Base AssemblyInstallation Items Needed Area of Various Standard Round FluesConnecting to GAS Supply Attaching Flexible Gas Hose to Heater Gas RegulatorPressure Testing Gas Supply Piping system Checking GAS ConnectionsDual Burner Smoky Mountain Oak Models Installing LogsPressure Testing Heater Gas Connections Dual Burner Premium Aged Split Oak Models Dual Burner Biltmore Split Oak ModelsInstalling Rear Log Installing Crossover Log Single Burner Seasonal Oak ModelsLighting Instructions For Your Safety Read Before LightingOperating Heater Manual Lighting Procedure Variable Control OperationTo Turn OFF GAS To Appliance Shutting Off HeaterIgnitor Button Cleaning and Maintenance Inspecting BurnersSpecifications LogsModel Models ModelTroubleshooting Observed Problem Possible Cause RemedyRefer to Air for Combustion and Venti Top Gas leak. See Warning statement at topOptional Positioning of Thermostat Sensing Bulb For Masonry and Factory-built Metal FireplaceIllustrated Parts Breakdown Parts List Variable Manually-ControlledCGD3018NT CGD3924NT CGD3930NT CGD3018NT CGD3924NT CGD3930NT CCL3018NT Thermostatically-Controlled Biltmore Split Oak ModelCCL3018NT CCL3924NT, CCL3930NTA CCL3924NT CCL3930NTA Variable Manually-Controlled Seasonal Oak Models Variable Manually-Controlled Mountain Oak Models CRL2718N CRL3124NReplacement Parts Service HintsTechnical Service AccessoriesOwners Registration Form Postage Required Parts Central Warranty Information

CGD3018N, CGD3924N, CGD3930N, CRL2718N, CCL3924N, CRL3124N, CCL3018N, CGD3924NT, CGD3018NT, CCL3924NT, CGD3930NT, CCL3018NT, CCL3930NTA specifications

The Desa product line, consisting of models CGD3018N, CGD3924N, CGD3930N, CRL2718N, CCL3924N, CRL3124N, CCL3018N, CGD3924NT, CGD3018NT, CCL3924NT, CGD3930NT, CCL3018NT, and CCL3930NTA, offers a wide range of heating solutions designed to tackle diverse customer needs. These models are distinctive for their durability, efficiency, and user-friendly designs.

Among the standout features of the Desa CGD series, models such as CGD3018N and CGD3924N integrate advanced combustion technologies that maximize fuel efficiency while minimizing emissions. This ensures that users enjoy a cleaner burn and reduced operational costs. The CGD3930N model boasts a higher output, making it suitable for larger spaces, while maintaining a compact design to fit various room layouts.

The CRL series, including CRL2718N and CRL3124N, emphasizes flexibility and ease of installation. These units employ a direct venting system that allows for efficient heat distribution without the need for extensive ductwork. The CCL models, such as CCL3924N and CCL3018N, are designed with aesthetics in mind. They feature sleek styles that blend seamlessly into modern home decors, all while delivering reliable heating performance.

The NT variants, such as CGD3924NT and CCL3924NT, introduce smart technology integration, allowing users to control their heating solutions remotely via smartphone applications. This feature ensures maximum convenience and adaptability to varying user preferences or schedules.

In terms of safety, all models are equipped with built-in features to prevent overheating and ensure stable operation. Additionally, many units incorporate easy-to-use thermostats and adjustable flame settings, providing users with greater control over their indoor climate.

Overall, the Desa models combine innovation with practicality, making them a preferred choice for consumers looking for efficient, stylish, and reliable heating solutions. With a variety of products catering to different preferences and requirements, Desa continues to be a leader in the heating industry, ensuring comfort and satisfaction for all users.
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