Combustion Air Supply continued-

Confined Spaces

Confined spaces are spaces defined as having less than 50 ft.3 of space per 1,000 BTU (1.41m3/.29kw) per hour of input.

Unconfined Spaces

In unconfined spaces in buildings, infiltration may be adequate to provide air for combustion, ventilation and dilution of flue gases. However, in buildings of tight construction (for example, weather stripping, heavily insulated, caulked, vapor barrier, etc.), additional air may need to be provided using the methods described above under CONFINED SPACES: All Air From Outdoors or

SPECIALLY ENGINEERED INSTALLATIONS.

All Air From Inside the Building: The confined space shall be provided with two permanent openings communicating directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an unconfined space. The total input of all gas utilization equipment installed in the combined space shall be considered in making this determination. Each opening shall have a minimum free area of 1 square inch per 1000 BTU (6.45cm2/.29kw) per hour of the total input rating of all gas utilization equipment in the confined space, but not less than 100 square inches (645cm2). One opening shall be within 12 inches (31cm) of the top and one within 12 inches (31cm) of the bottom of the enclosure.

All Air From Outdoors: The confined space shall be provided with two permanent openings, one commencing within 12 inches (31cm) of the top and one commencing within 12 inches (31cm) from the bottom of the enclosure. The openings shall communicate directly, or by ducts, with the outdoors or spaces (crawl or attic) that freely communicate with the outdoors.

1.When directly communicating with the outdoors, each opening shall have a minimum free area of 1 square inch per 4000 BTU (6.45cm2/1.2kw) per hour of total input rating of all equipment in the enclosure.

2.When communicating with the outdoors through vertical ducts, each opening shall have a minimum free area of 1 square inch per 4000 BTU (6.45cm2/1.2kw) per hour of total input rating of all equipment in the enclosure.

3.When communicating with the outdoors through horizontal ducts, each opening shall have a minimum free area of 1 square inch per 2000 BTU (6.45cm2/.6kw) per hour of total input rating of all equipment in the enclosure.

4.When ducts are used, they shall be of the same cross-sectional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall be not less than 3 inches (7.5cm)

Specially Engineered Installations

The requirements noted under CONFINED SPACES above shall not necessarily govern when special engineering, approved by the authority having jurisdiction, provides an adequate supply of air for combustion, ventilation, and dilution of flue gases.

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Bradford-White Corp 44219J, 238-44219-00J instruction manual Confined Spaces
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44219J, 238-44219-00J specifications

Bradford White Corp is a well-respected name in the water heating industry, known for producing high-quality products designed for durability and efficiency. Among its extensive range of water heaters is the model 238-44219-00J,44219J, which stands out for its impressive features and advanced technologies.

The 238-44219-00J model is a gas water heater that offers high performance and reliability. One of its main characteristics is its heavy-duty, glass-lined tank that enhances corrosion resistance, ensuring a longer lifespan. With a capacity designed to meet the demands of residential and commercial applications alike, this unit is ideal for various hot water needs.

This model incorporates Bradford White's innovative Hydrojet Total Performance System, which enhances the overall efficiency and performance of the water heater. This system includes a specially designed dip tube, which promotes better circulation and minimizes sediment buildup, ultimately leading to improved heating efficiency. The result is quicker recovery rates and a more consistent supply of hot water.

Another notable feature of the 238-44219-00J is its precise temperature control, which is made possible by the advanced gas control system. This control allows users to easily set and maintain their desired water temperature, reducing the risks of scalding and increasing comfort.

The water heater is also equipped with the Defender Safety System, which provides a range of safety features to protect users and properties. This system includes a flame arrestor design, which prevents ignition of flammable vapors, enhancing the overall safety profile of the unit. Additionally, the heater comes with a built-in diagnostics system that alerts users to any performance issues, facilitating timely maintenance.

In terms of installation, this model is designed with flexibility in mind. It can be vented using either direct vent or atmospheric vent systems, allowing for easy integration into various building designs. Its compact size makes it a suitable choice for tight spaces without sacrificing performance.

In summary, the Bradford White Corp 238-44219-00J,44219J gas water heater showcases a blend of durability, efficiency, and advanced technology. With its robust construction, high-performance features, and safety systems, it represents a reliable choice for those in need of a dependable hot water solution. The model exemplifies Bradford White's commitment to delivering innovative and efficient water heating solutions for both residential and commercial customers.
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