Desa B, C, CFS24NVC VS30N installation manual Optional Positioning of Thermostat Sensing Bulb

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DESA INTERNATIONAL

UNVENTED NATURAL GAS LOG HEATER

OPTIONAL POSITIONING OF THERMOSTAT SENSING BULB

FOR MASONRY AND FACTORY-BUILT METAL FIREPLACE

If your log set cycles to pilot, but the room temperature drops to a lower than ideal comfort level before the log set comes back on, you may want to reposition the thermo- stat sensing bulb.

The thermostat sensing bulb is located on the gas valve assembly. This location allows the thermostat to keep the room temperature at an ideal comfort level for most fireplace applications. For positioning the thermostat sensing bulb elsewhere, an adhesive-backed mounting clip is available.

Tools needed: 5/16" hex driver or socket

1.Locate the gas valve assembly and ther- mostat sensing bulb (see Figure 30).

2.With 5/16" hex driver or socket, loosen the thermostat screw. Carefully slide the thermostat sensing bulb out of the retaining clamp (see Figure 32).

Note: Do not remove the screw. Make sure you tighten the screw after remov- ing the thermostat sensing bulb.

IMPORTANT: Do not force or bend the thermostat sensing bulb or capillary.

Gas Valve

Assembly

Thermostat

Sensing Bulb

Figure 30 - Location of Gas Valve Assembly and Thermostat Sensing Bulb

3.The thermostat sensing bulb may be located to the lower right front side of fireplace. Determine location of sens- ing bulb, but do not mount sensing bulb until step 5. If you have a masonry fire- place, see Figure 33 for location.

If you have a factory-built metal fire- place, see Figure 34 for location.

If your fireplace has glass doors, posi- tion sensing bulb directly behind door gap on right bottom side (see Figure 35).

Figure 31 - Adhesive-backed Mounting Clip

Capillary

Screw Thermostat

Sensing Bulb

Retaining

Clamp

Figure 32 - Removing Thermostat Sensing Bulb

Thermostat

Sensing

Bulb

Adhesive- backed Mounting Clip

Figure 33 - Locating Thermostat Sensing Bulb on Masonry Fireplace

4.The mounting clip must be a minimum of 3" from bottom of fireplace to pre- vent crimping of capillary. Once you have decided on a location, clean the area thoroughly. Remove the paper backing from the adhesive on back of mounting clip. Press the clip into the new location so that the thermostat sensing bulb will be positioned verti- cally with the capillary at the bottom (see Figure 36). Slide the thermostat sensing bulb into the clip.

IMPORTANT: Do not crimp capillary.

Thermostat

Sensing

Bulb

Adhesive- backed Mounting Clip

Figure 34 - Locating Thermostat Sensing Bulb on Factory-built Metal Fireplace

Thermostat

Sensing

Bulb

Adhesive- backed Mounting Clip

Glass Doors

Figure 35 - Installing Thermostat Sensing Bulb behind Glass Doors

Thermostat

Sensing Bulb

Adhesive- backed

Capillary Mounting Clip

Do Not Crimp

Capillary

Figure 36 - Positioning the Thermostat Sensing Bulb in the Vertical Position with the Capillary at the Bottom

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Contents Unvented VENT-FREE Natural GAS LOG Heater What to do if YOU Smell GASSafety Information Desa International Unvented Natural GAS LOG HeaterLocal Codes Product FeaturesProduct Identification UnpackingUnusually Tight Construction AIR for Combustion and VentilationProviding Adequate Ventilation Confined and Unconfined SpaceDetermining FRESH-AIR Flow for Heater Location AIR for Combustion VentilationDetermining if You Have a Confined or Unconfined Space Building Ventilation AIRVentilation Air From Inside Ventilation Air From OutdoorsCheck GAS Type InstallationInstallation Clearances Vent-Free Operation OnlyIf Using Mantel Minimum Noncombustible Material ClearancesFloor Clearances Determining Minimum Mantel Clearance When Using a HoodMantel Clearances Determining Minimum Mantel ClearanceInstallation Items Needed Installing Damper Clamp Accessory for Vented OperationInstalling Heater Base Assembly Area of Various Standard Round FluesConnecting to GAS Supply Attaching Flexible Gas Hose to Heater Gas RegulatorPressure Testing Heater Gas Connections Pressure Testing Gas Supply Piping SystemChecking GAS Connections Installing Logs Operating Heater For Your Safety Read Before LightingLighting Instructions Thermostat Control Operation Manual Lighting ProcedureTo Turn OFF GAS To Appliance Shutting Off HeaterVariable Control Operation Pilot Flame Pattern Inspecting BurnersFront Burner Flame Pattern Cleaning Burner Injector Holder and Pilot AIR Inlet Hole Cleaning and MaintenanceLogs Troubleshooting Observed Problem Possible Cause RemedyMaintenance, Gas leak. See Warning statement at Optional Positioning of Thermostat Sensing Bulb For Masonry and FACTORY-BUILT Metal FireplaceService Hints SpecificationsReplacement Parts Technical ServiceIllustrated Parts Breakdown Variable Manually Controlled Split OAK ModelsParts List Variable MANUALLY- Controlled Split OAK ModelsDesa International Unvented Natural GAS LOG Heater THERMOSTAT- Controlled Split OAK Models VS18NTB VS24NTB VS30NTBAccessories 104414 Warranty Information International

CFS24NVC VS30N, B, C specifications

Desa CFS24NVC VS30N, B, C is a sophisticated heating solution designed to deliver comfort and efficiency in various settings. This series is particularly noted for its advanced features and technologies that cater to user needs while ensuring optimal performance.

One of the standout characteristics of the CFS24NVC series is its versatility in operation. Whether it is a larger commercial space or a cozy residential area, these heaters can adapt their output to suit different environments. The VS30N model, for instance, provides a strong heating capacity, making it ideal for workshops or larger living spaces. The adjustable settings allow users to match the heater's performance with the current requirements, promoting energy efficiency and cost savings.

Furthermore, the CFS24NVC series employs advanced heating technologies that enhance performance. The inclusion of ceramic heating elements enables rapid heat distribution, ensuring that spaces are warmed up quickly. This technology not only improves efficiency but also enhances comfort by providing consistent warmth throughout the room without cold spots.

In terms of design, the CFS24NVC VS30N, B, C models prioritize user-friendliness. They come equipped with intuitive controls, allowing for easy adjustments to temperature and settings. Many users appreciate the digital displays which provide real-time feedback on performance and help monitor energy consumption.

Safety is also a core feature of the CFS24NVC series. The units are fitted with multiple safety mechanisms, including overheating protection and tip-over switches, which automatically power down the heater in case of accidents. This ensures peace of mind for users, making them suitable for use in families with children or pets.

Moreover, the CFS24NVC series is engineered with durability in mind. Constructed from high-quality materials, these heaters are built to withstand daily wear and tear, ensuring longevity in performance.

In conclusion, the Desa CFS24NVC VS30N, B, C series stands out in the heating market for its combination of versatility, advanced heating technologies, user-friendly design, and robust safety features. This series is an excellent choice for consumers looking for reliable, efficient heating solutions suitable for diverse applications.
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