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

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OWNER’S MANUAL

AIR FOR

COMBUSTION AND

VENTILATION

Continued

DETERMINING FRESH-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 ventilation grills between the rooms.

1.Determine the volume of the space (length x width x height).

Length x Width x Height = _________________ cu. ft. (volume of space)

Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)

If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of the space.

2.Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.

____________ (volume of space) ÷ 50 cu. ft. = (Maximum Btu/Hr the space can support)

Example: 2560 cu. ft. (volume of space) ÷ 50 cu. ft. = 51.2 or 51,200 (maximum Btu/Hr the space can support)

3.Add the Btu/Hr of all fuel burning appliances in the space.

Vent-free heater

 

______________ Btu/Hr

 

 

 

 

Gas water heater*

 

______________ Btu/Hr

Example:

 

 

 

Gas furnace

 

______________ Btu/Hr

 

 

 

 

Gas water heater

 

40,000

Btu/Hr

Vented gas heater

 

______________ Btu/Hr

 

 

 

+

 

 

 

Vent-free heater

39,000

Btu/Hr

Gas fireplace logs

 

______________ Btu/Hr

 

 

=

 

 

 

Total

79,000

Btu/Hr

Other gas appliances* +

______________ Btu/Hr

 

 

 

 

 

 

 

 

Total

=

______________ Btu/Hr

 

 

 

 

*Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.

4.Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.

_________________ Btu/Hr (maximum the space can support)

_________________ Btu/Hr (actual amount of Btu/Hr used)

Example: 51,200 Btu/Hr (maximum the space can support) 79,000 Btu/Hr (actual amount of Btu/Hr used)

The space in the above example is a confined space because the actual Btu/Hr used is more than the maximum Btu/Hr the space can support. You must provide additional fresh air. Your options are as follows:

A.Rework worksheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoin- ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 6.

B.Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6.

C.Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined.

If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no additional fresh air ventilation.

WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANS Z223.1, Section 5.3 or applicable local codes.

Continued

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Contents CGD3930N What to do if YOU Smell GASCGD3924N CY3124N VENT-FREE Natural GAS LOG Heater Safety InformationProduct Identification Product FeaturesLocal Codes UnpackingAIR for Combustion and Ventilation Safety PilotPiezo Ignition System 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 Installation InstallationCheck GAS Type Minimum Fireplace Clearance To Combustible MaterialsMinimum Noncombustible Material Clearances If Not Using MantelMantel Clearances Determining Minimum Mantel Clearance When Using a HoodFloor Clearances Determining Minimum Mantel ClearanceHeight ft Flue Opening sq. ins Installing Damper Clamp Accessory for Vented OperationChimney Installation Items Needed Installing Heater Base AssemblyGas Connection Connecting to GAS SupplyChecking GAS Connections Pressure Testing Gas Supply Piping systemPressure Testing Heater Gas Connections Dual Burner Smoky Mountain Oak Models Installing LogsDual Burner Premium Aged Split Oak Models Installing Back Log #2Front Log #1 Grate Fingers Grate Base Dual Burner Biltmore Split Oak ModelsSingle Burner Mountain Oak Models Installing Crossover Log #6 CCL3930NTA ShownLighting Instructions For Your Safety Read Before LightingOperating Heater Variable Control Operation Manual Lighting ProcedureTo Turn OFF GAS To Appliance Shutting Off HeaterThermostat Control Operation Inspecting BurnersPilot Flame Pattern Cleaning Burner Injector Holder and Pilot AIR Inlet Hole Cleaning and MaintenanceBurner Primary AIR Holes Main BurnerObserved Problem Possible Cause Remedy TroubleshootingMaintenance, Gas leak. See Warning statement at top TopFor Masonry and Factory- built Metal Fireplace Optional Positioning of Thermostat Sensing BulbSpecifications Replacement PartsService Hints Accessories Technical ServiceParts Central Fireplace HoodIllustrated Parts Breakdown CGD3018N CGD3924N CGD3930N Parts ListThermostatically-Controlled Premium Aged Split Oak Models CGB3924NT CGB3930NTCGB3924NT CGB3930NT CGD3018NT CGD3924NT CGD3930NT CGD3018NT CGD3924NT CGD3930NT Thermostatically-Controlled Biltmore Split Oak Model CCL3018NTCCL3018NT CCL3924NT CCL3924NT CCL3930NTA CCL3930NTA Variable Manually-Controlled Mountain Oak Models CY2718N CY3124N Keep this Warranty Warranty Information

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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