Finishing, Hearth Extension | Hearth and Home Technologies HST-48D

11 Finishing

A. Non-Combustible Materials

•Materials which will not ignite and burn, composed of any combination of the following:

-	Steel	-	Iron
-	Brick	-	Tile
-	Concrete	-	Slate
-	Glass	-	Plasters

•Materials reported as passing ASTM E 136, Standard

Test Method for Behavior of Metals, in a Vertical Tube Furnace at 750° C

B. Combustible Materials

•Materials made of or surfaced with any of the following materials:

-	Wood	-	Compressed paper
-	Plant ﬁbers	-	Plastic

•Any material that can ignite and burn; ﬂame proofed or not, plastered or un-plastered

C. Hearth Extension

WARNING! Risk of ﬁre! High temperatures, sparks, embers or other burning material falling from the ﬁreplace may ignite ﬂooring or concealed combustible surfaces.

•Protective metal hearth strips MUST be installed.

•Hearth extensions MUST be installed exactly as speciﬁed.

Table 11.1

R = 1/k x inches of thickness

Table 11.2

•You MUST use a hearth extension with this ﬁreplace.

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

•The hearth extension material MUST be covered with tile, stone or other non-combustible material.

•Manufactured hearth materials will usually have a published R value (resistance to heat) or k value (conductivity of heat). Refer to the formula in Table 11.1 to convert a k value to an R value,

•Refer to Table 11.2 for hearth extension insulation alternatives.

CAT. #		A	B	C
HX4	in	66	20	12
	mm	1676	508	305

Figure 11.1 Hearth Extension Dimensions

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.

38	Heat & Glo • HST-48D US-CAN • 4012-040 • Rev F • 11/08

HST-48D specifications

Hearth and Home Technologies (HHT) is renowned for its commitment to innovation and quality in the hearth industry, and the HST-48D model exemplifies this dedication. The HST-48D is a versatile and efficient gas fireplace designed to enhance both residential and commercial spaces. With its modern aesthetic and impressive performance, it has become a popular choice among homeowners and builders alike.

One of the standout features of the HST-48D is its sleek design. Featuring a large viewing area, the fireplace allows for maximum visibility of the dancing flames while contributing to a contemporary décor. The clean lines and elegant finish make it a perfect fit for various interior styles, from traditional to modern. Optional decorative fronts and media options offer further customization, enabling homeowners to tailor the look of their fireplace to match their personal taste.

In terms of performance, the HST-48D boasts a high efficiency rating, ensuring that it not only provides warmth but does so in an eco-friendly manner. The fireplace operates on natural gas or propane, offering flexibility in terms of fuel choice, and its efficient burner system generates a significant amount of heat while minimizing energy consumption. This makes it an excellent option for both primary and supplementary heating.

The HST-48D is equipped with advanced technology to enhance user experience. The fireplace features a state-of-the-art electronic ignition system, allowing for reliable and easy starts. Additionally, the multi-function remote control gives users the ability to adjust the flame height, control the blower, and manage other settings with ease from the comfort of their chair.

Safety is another key characteristic of the HST-48D. It adheres to strict safety standards and includes features such as a tempered glass front to prevent accidental burns, ensuring peace of mind for families and pets.

Overall, the Hearth and Home Technologies HST-48D represents a fusion of aesthetics, technology, and safety. Its modern design, high efficiency, and user-friendly features make it a standout choice for those looking to enhance their living spaces with a reliable and stylish heating solution. Whether for relaxing evenings with family or entertaining guests, the HST-48D transforms any environment into a warm and inviting haven.

Hearth and Home Technologies HST-48D Finishing, Hearth Extension, = 1/k x inches of thickness

Models: HST-48D