8 Finishing

A. Hearth Extension

A hearth extension must be installed with all fireplaces to protect the combustible floor in front of the fireplace from both radiant heat and sparks. See Figures 8.1-8.5.

 

High temperature

 

 

 

 

(300°F min.) continuous,

 

 

HX3 or HX4

non-combustible sealant

Fireplace

 

non-combustible material

Protective

insulation

Hearth Ext

Tile, stone or other

 

 

or equivalent

 

 

 

 

 

 

(see Table below)

 

 

 

Metal Hearth

 

 

 

 

Strip

 

 

2 in. (51 mm)

 

 

Floor constructed of wood or

required

 

 

other combustible material

 

 

 

Figure 8.1 Hearth Extension Construction

WARNING

Fire Risk

•Metal hearth strips MUST be installed. Sparks or embers may ignite flooring.

This fireplace has been tested and approved for use with a hearth extension insulated to a minimum R value of 1.03.

To substitute materials for the factory-available hearth ex- tensions, calculate insulation alternatives as per Table 8.1 and the following formulas:

1 in. overlap

Metal strips are placed 2 in. (51 mm) under the front of the fireplace and must extend beyond the front and sides of fireplace opening by 2 in. (51 mm).

Figure 8.2 Positioning the Protective Metal Hearth Strips

WARNING

Fire Risk

•Hearth extensions must be installed exactly as specified.

High temperatures or hot embers may ignite concealed combustibles.

•Thermal conductivity per inch thickness = k

•k = (BTU)(inch) / (foot2)(hour)(°F)

•Required thickness = Rk

•Thermal resistance per inch thickness = r

•r = (foot2)(hour)(°F) / (BTU)(inch)

•Required thickness = R / rB.

Table 8.1

Hearth Extension Insulation Alternatives-Total minimum R Value must equal 1.03

 

 

 

Minimum

 

k per inch

r per inch

thickness

Material

thick

thick

required

Hearth & Home HX3, HX4 (Micore 300™)

0.49

2.06

1/2 in.

USG Micore 160™

0.39

2.54

1/2 in.

USG Durock™ Cement Board

1.92

0.52

2 in.

 

 

 

 

Cement Mortor

5.0

0.20

5-1/8 in.

Common Brick

5.0

0.20

5-1/8 in.

 

 

 

 

Ceramic Tile

12.50

0.08

12-1/4 in.

Armstrong™ Privacy Guard Plus

0.46

2.18

1/2 in.

 

 

 

 

Marble

14.3-20.0

0.07-0.05

14-5/8 in. - 20-3/8 in.

30

Heatilator • I80 CAN-US • 4013-203 Rev F • 04/08

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Heatiator I80 owner manual Finishing, Hearth Extension
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I80 specifications

The Heatiator I80 is a cutting-edge fireplace insert designed to provide efficient heating while enhancing the aesthetics of any living space. Combining modern technology with elegant design, the I80 is perfect for homeowners looking to experience the warmth and ambiance of a fire without sacrificing efficiency.

One of the standout features of the Heatiator I80 is its advanced heating technology. With a high-efficiency rating, this insert maximizes heat output while minimizing fuel consumption. The I80 is designed to utilize either wood or gas, offering versatility for users based on their preference and availability. The dual-fuel capability allows for easy adaptation to different conditions, providing comfort and warmth throughout the year.

The I80 incorporates a patented airflow system that improves heat circulation within the home. This innovative system distributes warm air efficiently, ensuring that every corner of the room feels cozy. Additionally, the insert comes with an adjustable fan that can be tailored to suit user preferences, allowing for customized heating levels based on the desired atmosphere.

Another impressive characteristic of the Heatiator I80 is its sleek design. The fireplace insert features a large viewing window, crafted from high-temperature tempered glass, which not only showcases the mesmerizing flames but also complements contemporary interior decor. The minimalist design is available in various finishes, enabling homeowners to choose an option that best fits their style.

Safety is a paramount concern, and the I80 comes equipped with several safety features. It includes a built-in safety shut-off mechanism that engages if the temperature rises beyond safe levels, ensuring peace of mind for users. Moreover, the unit is designed with an outer casing that remains cool to the touch, making it suitable for homes with children and pets.

Installation of the Heatiator I80 is straightforward, thanks to its flexible venting options. Whether retrofitting an existing fireplace or installing a new insert, the adaptability of the I80 accommodates various configurations, allowing for hassle-free integration into any home.

In conclusion, the Heatiator I80 stands out due to its combination of high efficiency, aesthetic appeal, and advanced safety features. With its ability to deliver warmth, ambiance, and design compatibility, it represents an exceptional option for those seeking to enhance their living space while enjoying the comfort of a modern fireplace insert.
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