Common Materials And Factors, Equivalents

Vermont Castings EWF30

The top of insulation must be covered with a non-com- bustible decorative covering or a piece of .018” mini- mum sheet metal, to protect hearth extension material. (Fig. 25)

Secure the hearth extension to the ﬂoor to prevent shifting, using trim molding or other similar means at three (3) outer edges. Seal crack between the ﬁreplace hearth and hearth extension with a noncombustible

material. (Figs. 24 and 25)

WARNING: Hearth extension must be installed in accordance with Figure 24. Top of hearth extension must be level with bottom of ﬁreplace.

Alternate noncombustible materials may be used providing the (total) thermal resistance (Rt value) of the alternate material employed is greater than or equal to R = 1.09 Thermal resistance (R) or thermal conductivity (K), may be obtained from manufacturer of the material. Factors are related by the formula K = 1/R. (Fig. 23)

T = given thickness

R = thermal resistance for a given thickness (T) K = thermal conductivity

Noncombustible material with a lower R value may be used, provided thickness of material is sufﬁciently greater to maintain an equivalent (total) thermal resis- tance (Rt).

Example of Determining Hearth Extension

COMMON MATERIALS AND FACTORS

MATERIAL	K*	R	MINIMUM
MATERIAL	K*	R	THICKNESS
			THICKNESS
EH2416	0.916	2.18	1.0 in.**
(CFM Corporation)	0.916	2.18	1.0 in.**

Common Brick	5.0	0.10	5.46 in.**

R Value is for 1/2 inch.
* Units of K = BTU/SQ FT/HR/˚F/IN
** Thickness of Listed Material				FP533ADD

Fig. 23 Hearth extension material factors.

Equivalents

To determine the thickness required for any new mate- rial:

Example for Common Brick

NEW	K of new material (per inch)		thickness
required =		X	of listed

thickness	K of listed material (per inch)		material

T (new) = 5.0/0.458 x 0.50 in. = 5.46 in. (new required thickness).

		2 x 4 Header - Do not
	Wall Covering	notch at standoffs
	Wall Covering	Noncombustible
	Noncombustible	Noncombustible
	Noncombustible	Material
	Decorative
	Facing
	Seal all cracks	NOTE: No
	between ﬁreplace sur-	material
	round (steel) and wall	may cover
	materials with noncom-	black cast
	bustible material.	face.
	Cast Front
	Noncombustible
	Decorative
	Covering
	FP1202a	Safety Strips - Must be
	FP1202a	overlapped 1/2” minimum

Fig. 24 Sealing gaps.

20008662

EWF30 specifications

The Vermont Casting EWF30 is a testament to innovation and craftsmanship in the world of cast iron wood stoves. This highly efficient wood-burning stove combines traditional aesthetics with modern technology, making it a perfect centerpiece for both rustic and contemporary homes. One of the standout features of the EWF30 is its impressive heating capacity. Designed to heat areas up to 2,000 square feet, it is ideal for large spaces, providing consistent warmth during chilly months.

Constructed from high-quality cast iron, the EWF30 offers a durability that only improves with age. This material is known for its excellent heat retention and distribution, resulting in a steady, comfortable warmth. The stove’s classic design includes large ceramic glass windows, allowing users to enjoy the mesmerizing beauty of the fire while safely keeping the warmth inside.

Incorporating advanced technology, the Vermont Casting EWF30 features a clean burning system that significantly reduces emissions. This is a critical aspect for environmentally conscious consumers, as the stove adheres to strict EPA standards, promoting cleaner air and reduced environmental impact. The efficiency of this wood stove is exceptional, with a thermal efficiency rating that maximizes heat output while minimizing fuel usage.

The EWF30 is equipped with a user-friendly air control system, allowing for easy adjustments to the airflow. This system enhances the combustion process, enabling users to achieve the desired flame and heat levels effortlessly. The top-loading design also simplifies the refueling process, making it easier to add wood without disturbing the existing fire.

Aesthetically, the Vermont Casting EWF30 can be customized with various finishes, including traditional black, enamel, and even bold colors, ensuring it fits seamlessly with any interior decor. Additionally, this model includes a removable ash pan, providing a convenient cleaning option.

In summary, the Vermont Casting EWF30 is more than just a wood stove; it is a fusion of tradition and technology. Its heating efficiency, durability, and aesthetic appeal make it a worthy investment for anyone seeking a reliable and stylish heating solution for their home. Whether for ambiance or functionality, the EWF30 is designed to enhance the living experience while respecting the environment.

Vermont Casting Common Materials And Factors, Vermont Castings EWF30, Equivalents, 20008662

Models: EWF30