Desa (V)G42H/50H, (V)G42R/50R, (V)G42/50, (V)G42HR/50HR installation manual Hearth Extension, Mantels

Page 6

Fireplace Installation

Continued

Hearth Extension

A hearth extension projecting a minimum of 20" in front of and a minimum of 12" beyond each side of the fireplace opening is required to protect combustible floor construction in front of the fire- place. Fabricate a hearth extension using a material which meets the following specifications: a layer of noncombustible, inorganic material having a thermal conductivity of K=0.84 BTU IN/FT, HR. F (or less) at 1" thick. For example, if the material selected has a K factor of 0.25, such as glass fiber, the following formula would apply:

0.25x 1.0" = 0.30" thickness required

Thermal conductivity "K" of materials can be obtained from the manufacturer or supplier of the noncombustible material. If the hearth extension is to be covered, use noncombustible material such as tile, slate, brick, concrete, metal, glass, marble, stone, etc. Provide a means to prevent the hearth extension from shifting and seal gap between the fireplace frame and hearth extension with a non- combustible material (see Figure 3).

WARNING: Hearth extension

is to be installed only as shown

in Figure 3.

Seal Gap

Fireplace Front

Mantels

A mantel may be installed if desired (see Figure 4). Woodwork such as wood trims, mantels or any other combustible material projecting from the front face must not be placed within 12" of the fireplace open- ing. Combustible materials above 12" and projecting more than 1 1/2" from the fireplace must not be placed less than 15" from the top opening of the fireplace (NFPA STD 211, Sec. 7-3.3.3).

Mantels or any other combustible material also may come up to the side edge of the black metal face of the fireplace just as long as the projection from the front face fall within the limit shown in Figure 4.

 

 

Combustible

 

12 1/4" Ref.

Material

 

 

Safe

6"

 

Zone for

Ref.

33°

Projection of

 

Combustible

 

 

 

3" Nom.

Materials

 

 

11/2" Max.

15" Min.

12" Min.

Upper

 

Section of

Fireplace

Fireplace

Opening

Ember Protector

Fireplace Front

Raised Hearth

Ember Protector

Fireplace Front

Elevated

Ember Protector

Top View of Fireplace

 

 

FIREBOX

 

7.75"

 

 

 

3" Max.

Hearth

SAFE ZONE

4.5"

33°

Extension

 

Seal Gap

Min. to

Combustible

 

Perpendicular

 

Material Must

 

Side Wall

 

Not Overlap

 

12"

 

Front Face

 

 

Figure 3 - Hearth Extension

Figure 4 - Mantel Clearances to

 

 

Combustible Material

www.desatech.com109493-01N

Page 5 Page 7
Image 6
Page 5 Page 7
Contents Save this Book Table of Contents Safety InformationSpecifications ModelsRound TOP Termination Minimum clearance to combustibles Fireplace InstallationSelecting location FramingHearth Extension MantelsOptional Outside air Kit Model ak4/ak4f Venting InstallationAssembly and installation of double wall chimney system Chimney PipeUsing Elbow offsets 30E-12DM Elbow SET onlyFlashing installation v6f-10dm or v12f-10dm Firestop Spacers FS-10Penetrating the roof Chase installations Installing Flashing on a Metal RoofOptional Gas Line Installation Foot ruleFinishing the fireplace Glass Door Installation Installing Door FramesDoor Adjustment Operation Maintenance GuidelinesInstalling glass doors Glass DoorsTechnical Service Outside air and damper handle operationReplacement Parts Herringbone Brick LinerEmber Protector EP-36 Ash Box StandarD Brick Liner Double Wall Pipe 12-12DM AccessoriesBi-Fold Glass Door Offset and Return

(V)G42H/50H, (V)G42/50, (V)G42R/50R, (V)G42HR/50HR specifications

Desa (V)G42/50, (V)G42HR/50HR, (V)G42R/50R, and (V)G42H/50H represent a series of advanced heating solutions designed to meet varied thermal requirements while ensuring energy efficiency and user comfort. Each model in this range boasts its unique features that cater to specific needs, providing versatility for residential and commercial applications.

The (V)G42/50 series serves as a staple in modern heating technology. With a focus on efficiency and environmental sustainability, these models utilize high-efficiency burners and sophisticated heat exchangers that maximize heat output while minimizing fuel consumption. Their compact design allows for easy installation in limited spaces, making them an ideal choice for both contemporary and traditional settings. Comfort is enhanced through user-friendly digital thermostats that allow for precise temperature control.

Moving to the (V)G42HR/50HR, these units incorporate high-efficiency ratings and variable speed fans to adjust airflow based on heating demand. This adaptability not only increases energy savings but also improves indoor air quality by reducing the accumulation of airborne particulates. The use of high-grade insulation materials ensures minimal heat loss, providing a more consistent indoor temperature.

The (V)G42R/50R models are designed specifically for radiant heating applications. Featuring advanced radiant heat technology, these units distribute warmth evenly across the space, creating a comfortable environment without the drafts often associated with conventional heating systems. The integration of smart home technology allows for remote operation and monitoring, enhancing user convenience.

Lastly, the (V)G42H/50H models are tailored for high-capacity heating needs. These systems are built for larger spaces, offering robust heating capabilities while maintaining energy efficiency. Their construction utilizes durable materials that extend product longevity and reduce the need for frequent maintenance.

In summary, the Desa (V)G series offers a comprehensive lineup of heating solutions with advanced technology and features designed for efficiency, comfort, and adaptability. From standard models to high-capacity and radiant heating systems, each unit addresses unique heating challenges, making them suitable for diverse applications while prioritizing energy conservation and user satisfaction.
Top Page Image Contents