Unusually Tight Construction

WATER VAPOR: A BY-PRODUCT OF UNVENTED ROOM HEATERS

Water vapor is a by-product of gas combustion. An unvented room heater produces approximately one (1) ounce (30ml) of water for every 1,000 BTU's (.3KW's) of gas input per hour.

Unvented room heaters must be used as supplemental heat (a room) rather than a primary heat source (an entire house). In most supplemental heat applications, the water vapor does not create a problem. In most applications, the water vapor enhances the low humidity atmosphere experienced during cold weather.

The following steps will help insure that water vapor does not become a problem.

1.Be sure the heater is sized properly for the application, including ample combustion air and circulation air.

2.If high humidity is experienced, a dehumidifier may be used to help lower the water vapor content of the air.

3.Do not use an unvented room heater as the primary heat source (an entire house).

PROVISIONS FOR ADEQUATE COMBUSTION & VENTILATION AIR

This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air.

The National Fuel Gas Code, ANSI Z223.1 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8m3 per kw) of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed, through openings not furnished with doors, are considered a part of the unconfined space.

The following example is for determining the volume of a typical area in which the BF-20 may be located and for determining if this area fits the definition of an unconfined space.

The input of the BF-20 is 20,000 Btu per hour. Based on the 50 cubic feet per 1,000 Btu per hour formula, the minimum area that is an unconfined space for installation of the BF-20 is 1,000 cubic feet, 50 cubic feet x 20 = 1,000 cubic feet. To determine the cubic feet of the area in which the BF-20 is to be installed, measure the length, width and height of the area. Example: The area measures 16 feet in length, 8 feet in width and 8 feet in height, the area is 1,024 cubic feet. The BF-20 can be installed in this unconfined space with no requirement to provide additional combustion and ventilation air.

Warning: If the area in which the heater may be operated is smaller than that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1, Section 5.3 or applicable local codes.

The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in buildings of unusually tight construction, you must provide additional fresh air.

Unusually tight construction is defined as construction where:

a.Walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one perm or less with openings gasketed or sealed, and

b.Weatherstripping has been added on openable windows and doors, and

c.Caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical, and gas lines, and at other openings.

If the heater is installed in a building of unusually tight construc- tion, adequate air for combustion, ventilation and dilution of flue gases shall be provided in accordance with ANSI Z223.1/NFPA54.

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BF-30-2, BF-20-2, BF-10-2 specifications

Empire Products has established itself as a notable player in the realm of industrial solutions with its comprehensive range of BF series products, particularly the BF-30-2, BF-10-2, and BF-20-2. These models, each designed to meet various operational needs, exhibit the company’s commitment to innovation and efficiency.

The BF-30-2 is the flagship model in the series, equipped with advanced features that cater to heavy-duty applications. It boasts a robust design coupled with high-performance capabilities. One of its standout technologies includes an efficient energy management system that optimizes power consumption without compromising performance. This model also features a user-friendly interface for easy operation and monitoring, ensuring that users can quickly adapt to its functionalities. The BF-30-2 is particularly well-suited for applications requiring precision and high throughput, making it a favorite among manufacturers looking for reliability and efficiency.

Next in the lineup is the BF-20-2, which strikes a balance between power and versatility. This model is designed to handle moderate to intense workloads, making it ideal for businesses that require adaptability in their operations. It is equipped with adaptive technology that allows it to adjust its performance based on real-time operational demands. The BF-20-2 also offers enhanced safety features, ensuring that operators can work confidently and comfortably.

The BF-10-2, while smaller in capacity, should not be underestimated. It is engineered for small to medium-sized tasks, perfect for businesses that require compact solutions without sacrificing quality. This model incorporates cutting-edge materials and components designed to maximize durability and reduce maintenance needs. Additionally, the BF-10-2 is highly energy-efficient, making it an excellent choice for environmentally conscious companies looking to minimize their carbon footprint.

All three models share a few key characteristics that highlight the essence of Empire Products' engineering prowess. They are designed for easy integration into existing systems, which simplifies upgrades for businesses looking to enhance their operational capabilities. Moreover, their modular design allows for customizable configurations, catering to specific user requirements.

In conclusion, the Empire Products BF series, encompassing the BF-30-2, BF-20-2, and BF-10-2, represents the synergy of performance, innovation, and versatility. Each model serves a unique purpose, allowing businesses to select the perfect equipment to meet their operational goals while benefiting from the latest technological advancements in the industry.