VANGUARD FLAME MAX®

UNVENTED NATURAL GAS LOG HEATER

INSTALLATION

Continued

NOTICE: Manual control heaters may be used as a vented product. If so, you must always run heater with chimney flue damper open. If running heater with damper open, noncombustible material above fireplace opening is not needed.

Minimum Noncombustible Material Clearances

If Not Using Mantel

Note: If using a mantel, proceed to If Using Mantel. If not using a mantel, follow the information below.

You must have noncombustible material(s) above both fireplace openings. Noncom- bustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have noncom- bustible material behind it. Noncombus- tible material must extend at least 8" up (for all models). If noncombustible material is less than 12", you must install the fireplace hood accessory. See Figure 5 at right 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 10.

If Using Mantel

You must have noncombustible material(s) above the fireplace opening. Noncombus- tible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have noncombustible material behind it. Noncombustible mate- rial must extend at least 8 inches up (for all models). If noncombustible material is less than 12", you must install the fireplace hood accessory. Even if noncombustible material is more than 12", you may need the hood accessory to deflect heat away from your mantel shelf. See Figure 5 and Figures 6 and 7, page 9, for minimum clearances.

Noncombustible

 

Requirements for

Material Distance (A)

 

Safe Installation

 

 

 

12" or more

 

Noncombustible material OK.

Between 8" and 12"

 

Install fireplace hood accessory (GA6050, GA6052

 

 

 

 

 

or GA6053, see Accessories, page 24).

Less than 8"

 

Noncombustible 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.

 

 

 

 

 

 

 

Heat Resistant

 

 

 

 

 

 

 

 

 

 

 

 

Material

 

 

 

 

 

 

 

 

 

(A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace

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Desa VYM27NR installation manual Minimum Noncombustible Material Clearances, If Not Using Mantel, If Using Mantel
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VYM27NR specifications

Desa VYM27NR is a cutting-edge piece of technology designed to meet the demanding needs of modern users while ensuring energy efficiency and superior performance. This innovative device integrates advanced features and smart technologies that make it a popular choice among professionals and consumers alike.

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