Desa UNVENTED (VENT-FREE) NATURAL GAS LOG HEATER AIR for Combustion and Ventilation

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AIR FOR COMBUSTION AND VENTILATION

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PROVIDING ADEQUATE VENTILATION

The following is exerpts from National Fuel Gas Code. NFPA 54/ANSI Z223.1, Section 5.3, Air for Combustion and Ventilation.

All spaces in homes fall into one of the three following ventilation classifications:

1. Unusually Tight Contruction; 2. Unconfined Space; 3. Confined Space.

The information on pages 5 through 8 will help you classify your space and provide adequate ventilation.

Unusually Tight Construction

The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in buildings of unusually tight construc- tion, you must provide additional fresh air.

Unusually tight construction is defined as construction where:

a.walls and ceilings exposed to the outside atmosphere have a con- tinuous water vapor retarder with a rating of one perm or less with openings gasketed or sealed and

b.weather stripping has been added on openable windows and doors and

c.caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical, and gas lines, and at other openings.

If your home meets all of the three criteria above, you must provide addi- tional fresh air. See Ventilation Air From Outdoors, page 8.

If your home does not meet all of the three criteria above, proceed to page 7.

Unconfined Space

The National Fuel Gas Code, ANSIZ223.1, 1992, Section 5.3 defines uncon- fined space as having a minimum air volume of 50 cubic feet (127 cubic cm) for each 1000 Btu/Hr input rating of all appliances in the space (cubic feet equals length x width x height of space). Include adjoining rooms only if there are doorless passageways or ventilation grills between the rooms.

Confined Space

The National Fuel Gas Code, ANSIZ223.1, 1992, Section 5.3 defines confined space as having an air volume of less than 50 cubic feet (127 cubic cm) for each 1000 Btu/Hr input rating of all appliances in the space (cubic feet equals length x width x height of space). Include adjoining rooms only if there are doorless passageways or ventilation grills between the rooms.

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Contents What to do if YOU Smell GAS OWNER’S Operation and Installation ManualFLAME-MAX Oak Log DesignContents Safety Information Safety InformationProduct Identification Unpacking FeaturesLocal Codes ProductUnusually Tight Construction AIR for Combustion and VentilationProviding Adequate Ventilation Unconfined SpaceDetermining AIR Flow for Heater Location Determining if You Have a Confined or Unconfined SpaceVentilation AIR Ventilation Air From Inside BuildingVentilation Air From Outdoors Installing Check GAS TypeLOG Sizing Requirements Minimum Fireplace ClearanceTo Combustible Materials Minimum Wall and Ceiling Clearances see FigureMinimum Non Combustible Material Clearances If Using Mantel Installing Installing Damper Clamp Accessory for Vented Operation Attaching Damper ClampInstalling Heater Base Assembly Installation Items NeededAttaching Flexible Gas Hose to Heater Gas Regulator Connecting to GAS Supply Installation Items NeededChecking GAS Connections Gas ConnectionPressure Testing Heater Gas Connections Test Pressures Equal To or Less Than 1/2 PsigInstalling Logs For Standard Oak Log ModelInstalling Premium One-Piece Log Set For Premium ModelsFor Your Safety Read Before Lighting Operating HeaterVariable Control Operation Operating Heater Inspecting Burners Pilot Flame PatternODS/PILOT and Burner Trouble ShootingQualified service person should service and repair heater LogsMaintenance, TROUBLE- ShootingRefer to Air for Com Gas leak. See Warning Technical ServiceReplacement Parts HintsIllustrated Parts Breakdown Parts List KEY Part Number for VYS18N VYS24N Description QTYBirch Log Models VYD24N and VYBD24N KEY Part Number for VYD24N VYBD24N Description QTY Hood GA6050 AccessoriesValve GA5010 Hood GA6052103309 Warranty Information Keep this Warranty

UNVENTED (VENT-FREE) NATURAL GAS LOG HEATER specifications

The Desa Unvented (Vent-Free) Natural Gas Log Heater is an innovative heating solution that combines efficiency, comfort, and aesthetic appeal. Designed for those seeking a reliable and stylish way to heat their living spaces, this vent-free heater is ideal for any home setting.

One of the main features of the Desa Unvented Gas Log Heater is its ability to provide warmth without the need for external venting. This means it can be installed in a variety of locations, including areas without a traditional chimney or flue. The absence of vents not only simplifies installation but also maximizes design flexibility, allowing homeowners to enhance their existing decor with a beautiful gas log fireplace.

The heater utilizes advanced infrared heating technology, which ensures that radiant heat is emitted throughout the room. This method of heating is exceptionally efficient, as it warms up objects and people directly, rather than merely heating the air. Consequently, this results in faster heating times and greater comfort, especially during colder months.

Equipped with the latest safety features, the Desa Unvented Gas Log Heater includes an oxygen depletion sensor (ODS), which automatically shuts off the heater if oxygen levels drop too low. This feature guarantees peace of mind for users, ensuring that safety is prioritized without sacrificing comfort.

Another significant characteristic of this heater is its realistic log design, which mimics the look of traditional wood-burning fireplaces. The ceramic fiber logs are intricately detailed, providing an authentic and charming ambiance that enhances any room's aesthetic. This realistic flame effect not only adds to the visual appeal but also creates a cozy atmosphere perfect for gatherings with family and friends.

The heater is designed to operate efficiently with minimal maintenance. The adjustable thermostat allows for precise temperature control, ensuring that users can set their desired warmth level and maintain it effortlessly. Moreover, the unit is compatible with natural gas, making it an environmentally friendly option that reduces the carbon footprint compared to traditional heating methods.

In summary, the Desa Unvented Natural Gas Log Heater is an exceptional heating option that combines elegance, safety, and performance. With its vent-free design, advanced heating technology, realistic aesthetics, and user-friendly features, this heater is a perfect choice for those looking to create a warm and inviting environment in their homes.
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