Index

2.If the openings communicate with the outdoors through horizontal ducts, each opening shall have a minimum free area of 1 in.2/2000 BTU (2.54cm2/0.59kW) per hour of the total rating of all gas appliances in the enclosure.

3.If the openings communicate directly with the outdoors or through vertical ducts with the outdoors, each opening shall have a minimum free area of 1 in.2 /4000 BTU (2.54cm2/1.18kW) per hour of the total rating of all gas appliances in the enclosure.

CAUTION

The draft diverter relief opening of the water heater and combustion air inlet must be in the same atmospheric pressure zone. Large exhaust fans in kitchens and other locations can lower the air pressure inside an enclosure and interfere with the proper operation and venting of the water heater . In these cases, the water heater should be installed in a separate room with the combustion and ventilation air supplied directly from outdoors as previously described.

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 in.2/1000 BTU (2.54cm2/0.29kW) per hour of the total input rating of all gas utilization equipment in the confined space, but not less than 100 square inches (254cm2). One opening shall be within 12 inches (30.5 cm) of the top and one within 12 inches (30.5 cm) of the bottom of the enclosure.

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.

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.

Water Connections

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American Water Heater GAS-FIRED COMMERCIAL WATER HEATER Unconfined Spaces, Specially Engineered Installations
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GAS-FIRED COMMERCIAL WATER HEATER specifications

American Water Heater offers a range of high-performance gas-fired commercial water heaters designed to meet the needs of a variety of applications, including restaurants, hotels, and industrial facilities. Renowned for their reliability and efficiency, these water heaters are engineered to provide large volumes of hot water consistently and efficiently.

One of the standout features of American Water Heater's gas-fired models is their robust construction. Built with durable materials, these heaters are designed to withstand the rigors of daily use in demanding commercial environments. The units typically have a high-quality glass-lined tank that enhances protection against corrosion, prolonging the water heater's lifespan and ensuring longevity.

Efficiency is at the core of American Water Heater's design ethos. Many models are equipped with advanced burner technologies that promote higher thermal efficiency. Some units boast energy factors exceeding industry standards, minimizing fuel consumption while maximizing output. This not only reduces operational costs but also contributes to environmental sustainability by lowering carbon emissions.

Among the innovative technologies incorporated into these water heaters is a precise temperature control system, which allows for the accurate regulation of hot water supply. This feature is crucial in commercial settings where the demand for hot water can fluctuate significantly. Moreover, features like digital diagnostics and integrated control systems make it easier for operators to monitor performance and troubleshoot problems swiftly, thus reducing downtime.

Safety is paramount in any gas-fired appliance, and American Water Heater prioritizes this with features such as automatic shutoff valves and flame failure protection systems. These safety mechanisms ensure that the units operate reliably while providing peace of mind to users.

American Water Heater's gas-fired commercial water heaters also offer a range of capacities, catering to different operational needs. Models are available in various sizes, ensuring that no matter the volume of hot water required, there is a solution that fits.

In conclusion, American Water Heater's gas-fired commercial water heaters combine durability, efficiency, and advanced technology, making them suitable for a wide array of applications. With their focus on safety and performance, these units stand out as a top choice for businesses seeking a reliable hot water solution.
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