INSTALLATION

Mantel Clearances (Cont.) Floor Clearances Installing Damper Clamp Accessory for Vented Operation

9

INSTALLATION

Continued

12"

10"

8"

6"

2 1/2"

Minimum Non-

Combustible

Material

Mantel Shelf

Underside of

Mantel Shelf

All minimum distances are in inches

8"

12"

15"

18"

20"

Min.

 

 

 

 

Top of Fireplace

Opening

If reasons number 1 or 2 above apply to you, you must permanently open chimney flue damper. You must install the damper clamp accessory (to order, see Accessories, page 27). This will insure vented operation (see Figure 10). The damper clamp will keep damper open. Installation instructions are included with clamp accessory.

See chart below for minimum permanent flue opening you must provide. Attach damper clamp so the minimum permanent flue opening will be maintained at all times.

Chimney Height (ft.)

Minimum Permanent Flue Opening

6' to 15'

39 sq. inches

Hood (GA6050,

Distances to

GA6052 or

Underside of

GA6053)

Mantel

Figure 7 - Minimum Mantel Clearances When Using Hood

FLOOR CLEARANCES

A.If installing appliance on the floor level, you must maintain the minimum distance of 14" to combustibles (see Figure 8).

B.If combustible materials are less than 14" to the fireplace, you must install appliance at least 5" above the combustible floor- ing (see Figure 9).

 

Combustible

 

14"

Material

Hearth

 

Combustible

Min.

 

 

Material

 

 

 

 

5"

 

 

Min.

Noncombustible Material

 

Figure 8 - Minimum Fireplace

Figure 9 - Minimum Fireplace

Clearances If Installed at Floor

Clearances Above Combus-

Level

 

tible Flooring

INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION

Note: When used as a vented heater, appliance must be installed only in a solid-fuel burning fireplace with a working flue and constructed of noncombustible material.

If your heater is a manually controlled model, you may use this heater as a vented product. There are three reasons for operating your heater in the vented mode:

1.The fireplace does not meet the clearance to combustibles re- quirements for vent-free operation

2.State or local codes do not permit vent-free operation

3.You prefer vented operation

15' to 30'

29 sq. inches

 

 

 

 

 

Area of Various Standard Round Flues

 

 

 

 

 

 

Diameter (ins.)

Area (sq. ins.)

 

 

 

 

 

 

5"

20 sq. inches

 

 

6"

29 sq. inches

 

 

7"

39 sq. inches

 

 

8"

51 sq. inches

 

 

 

 

 

Damper

Clamp

Damper

Damper

Clamp

DamperDamper

Masonry Fireplace

Manufactured Fireplace

Figure 10 - Attaching Damper Clamp

For more information, visit www.desatech.com

111115-01A

Page 9
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Desa VML27NR installation manual Floor Clearances, Installing Damper Clamp Accessory for Vented Operation

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