Desa UNVENTED (VENT-FREE) NATURAL GAS LOG HEATER installation manual If Using Mantel

Page 12

INSTALLING

Continued

12

Minimum Non Combustible Material Clearances

If Using Mantel

You must have non combustible material(s) above the fireplace opening. Non combustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have non combustible material behind it. Non combustible material must extend at least 8 inches up (for all models). If non combustible material is less than 12", you must install the fireplace hood accessory (24" model only). Even if non combustible material is more than 12", you may need the hood accessory to deflect heat away from your mantel shelf. See chart below and Figures 6 and 7 for minimum clearances.

IMPORTANT: If you cannot meet these minimum clearances, you must operate heater with chimney flue damper open. Go to Installing Damper Clamp Accessory for Vented Operation, page 14.

Non-Combustible

Requirements for

Material Distance (A)

Safe Installation

 

 

12" or more

Non combustible material OK.

Between 8" and 12"

24" Model: Install fireplace hood accessory (GA6050

 

or GA6052, see Accessories, page 34).

 

18" Model: Non combustible material OK.

Less than 8"

Non combustible material must be extended to at

 

least 8". See Between 8" and 12", above. If you

 

cannot extend material, you must operate heater with

 

flue damper open.

 

 

Mantel Clearances

If you meet minimum clearance between mantel shelf and top of fireplace opening, a hood is not required (see Figure 6).

 

10"

Mantel Shelf

 

 

 

 

 

 

 

 

 

Underside of

 

8"

 

 

 

 

 

 

 

 

 

 

 

Mantel Shelf

 

 

 

 

 

 

 

 

 

6"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 1/2"

 

 

 

 

 

All minimum

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

distances are

Minimum Non-

 

 

(A)

 

 

 

 

 

in inches

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Combustible

 

 

 

 

 

 

 

Log Set

 

 

 

 

 

 

 

 

Material

 

 

 

 

 

 

 

 

 

 

12"

20"

241/2"

271/2"

30"

 

24" Models

 

 

 

 

 

 

 

8"

14"

163/4"

181/2"

20"

 

18" Model

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Top of Fireplace

Opening

Minimum Non-

Distances to

Combustible

Underside of

Material Height

Mantel

Figure 6 - Minimum Mantel Clearances Without Using Hood

If above minimum clearances are not met, you must have a hood. Follow minimum clearances shown in Figure 7 on page 13 when using hood.

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Contents OWNER’S Operation and Installation Manual FLAME-MAXWhat to do if YOU Smell GAS Oak Log DesignContents Safety Information Safety InformationProduct Identification Features Local CodesUnpacking ProductAIR for Combustion and Ventilation Providing Adequate VentilationUnusually Tight Construction 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 TypeMinimum Fireplace Clearance To Combustible MaterialsLOG Sizing Requirements 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 PatternTrouble Shooting Qualified service person should service and repair heaterODS/PILOT and Burner LogsMaintenance, TROUBLE- ShootingRefer to Air for Com Gas leak. See Warning Service Replacement PartsTechnical 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 Accessories Valve GA5010Hood GA6050 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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