Desa CFS24NVC VS30N, B, C installation manual AIR for Combustion Ventilation

Page 5

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

+

33,000

Btu/Hr

Gas fireplace logs

_______________ Btu/Hr

Other gas appliances* + _______________ Btu/Hr

Total

=

73,000

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) 73,000 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 adjoining 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, 1992, Section 5.3 or applicable local codes.

Continued

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Contents What to do if YOU Smell GAS Unvented VENT-FREE Natural GAS LOG HeaterDesa International Unvented Natural GAS LOG Heater Safety InformationProduct Identification Product FeaturesLocal Codes UnpackingProviding Adequate Ventilation AIR for Combustion and VentilationUnusually Tight Construction Confined and Unconfined SpaceDetermining if You Have a Confined or Unconfined Space AIR for Combustion VentilationDetermining FRESH-AIR Flow for Heater Location Ventilation Air From Inside Ventilation AIRBuilding Ventilation Air From OutdoorsInstallation Clearances InstallationCheck GAS Type Vent-Free Operation OnlyMinimum Noncombustible Material Clearances If Using MantelMantel Clearances Determining Minimum Mantel Clearance When Using a HoodFloor Clearances Determining Minimum Mantel ClearanceInstalling Heater Base Assembly Installing Damper Clamp Accessory for Vented OperationInstallation Items Needed Area of Various Standard Round FluesAttaching Flexible Gas Hose to Heater Gas Regulator Connecting to GAS SupplyChecking GAS Connections Pressure Testing Gas Supply Piping SystemPressure Testing Heater Gas Connections Installing Logs Lighting Instructions For Your Safety Read Before LightingOperating Heater To Turn OFF GAS To Appliance Manual Lighting ProcedureThermostat Control Operation Shutting Off HeaterVariable Control Operation Front Burner Flame Pattern Inspecting BurnersPilot Flame Pattern Logs Cleaning and MaintenanceCleaning Burner Injector Holder and Pilot AIR Inlet Hole Observed Problem Possible Cause Remedy TroubleshootingMaintenance, Gas leak. See Warning statement at For Masonry and FACTORY-BUILT Metal Fireplace Optional Positioning of Thermostat Sensing BulbReplacement Parts SpecificationsService Hints Technical ServiceVariable Manually Controlled Split OAK Models Illustrated Parts BreakdownVariable MANUALLY- Controlled Split OAK Models Parts ListDesa International Unvented Natural GAS LOG Heater VS18NTB VS24NTB VS30NTB THERMOSTAT- Controlled Split OAK ModelsAccessories 104414 International Warranty Information

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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