Commercial Gas Boilers

SUGGESTED SPECIFICATION

The hot water supply boiler(s) shall be A. O. Smith Dura-Max® model DW ______ with an input rating of ______ BTU/hr and a recovery rating of ________________ BTU/hr at

100°F temperature rise. The boiler(s) shall be design-tested and certified to the ANSI Z21.13 standard, approved by CSA International and shall carry the ASME “H” Symbol. The wet section shall be design-registered in accordance with the requirements of the ASME Code and shall carry an appropriate National Board Number or Canadian Registration Number. All waterways shall be copper, brass or bronze. The heat exchanger shall be a two (2)-pass design incorporating integral-finned copper tubes. The double-row heat exchanger shall have staggered tubes. Cast bronze return bends shall be readily removable to permit visual inspection or cleaning without removing the entire wet section assembly. Silicone “O”-ring gaskets shall form a water-tight seal by compression and shall be isolated from the flue gases by 3/4” board-type ceramic fiber insulation. The heat exchanger assembly shall be hydrostatically tested to a pressure of 240 psi (1655 kPa) and shall have a maximum working pressure of 160 psi (1100 kPa).The combustion chamber shall be constructed of board-type ceramic fiber insulation rated to 2300°F (1260°C) which interlocks to form a gas-tight seal and shall be supported in a heavy-gauge corrugated steel frame. The external cabinet shall incorporate a built-in draft hood and shall be of baked enamel steel construction. It shall be suitable for installation on combustible flooring. The burners shall be a stainless steel stamped design and shall be mounted in a removable drawer assembly.The burner controls shall be 24 VAC and shall include slow-opening main gas valve for soft ignition, redundant safety shutoff gas valve, main and pilot pressure regulators, recycling intermittent pilot system with one-second shutdown in the event of pilot flame failure, automatic recycling high limit, manual reset ECO limit, main and pilot manual cocks and manual firing valve, and an ASME-rated pressure relief valve. The boiler shall be approved by Factory Mutual (FM).The boiler shall comply with ASHRAE/IESNA 90.1-2004 standards. Optional: Factory-installed, dial-type temperature and pressure gauges shall be mounted on the front of the cabinet.

For Technical Information and Automated Fax Service, call 800-527-1953. A.O. Smith Corporation reserves the right to make product changes or improvements without prior notice.

Revised November 2009

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A.O. Smith DW-1810 warranty Suggested Specification

DW-1810 specifications

The A.O. Smith DW-1810 is a highly efficient and innovative water heater designed to provide reliable hot water for residential and commercial applications. This model boasts a range of features and advanced technologies, making it a leading choice in the market.

One of the key features of the DW-1810 is its tankless design, which allows for on-demand heating. Unlike traditional water heaters that store hot water in a tank, the DW-1810 heats water as it flows through the unit. This provides an endless supply of hot water, eliminating the inconvenience of running out during peak usage times. This design also contributes to energy efficiency, as it only heats water when needed, reducing standby energy losses.

The DW-1810 is equipped with advanced insulation materials that help minimize heat loss. This feature not only enhances the unit's energy efficiency but also contributes to lower utility bills. Additionally, the unit utilizes a high-efficiency burner that ensures optimal combustion, maximizing heat output while minimizing emissions.

Another standout characteristic of the A.O. Smith DW-1810 is its user-friendly digital display and control panel. This intuitive interface allows users to easily set the desired water temperature and monitor the system's performance. Many users appreciate the convenience this feature adds, along with built-in safety mechanisms such as freeze protection and over-temperature shut-off.

The DW-1810 is designed with longevity in mind. Its durable construction includes high-quality materials that resist corrosion and wear. The heater features a self-modulating technology that adapts to demand, ensuring that the system operates efficiently and effectively in varying conditions.

Installation versatility is another plus for the A.O. Smith DW-1810. It can be installed in various configurations, including indoor and outdoor settings, which makes it suitable for different home and business layouts. This flexibility ensures that users can find the best fit for their specific circumstances.

In summary, the A.O. Smith DW-1810 is a state-of-the-art water heater that combines efficiency, durability, and user-friendly technology. With features such as tankless operation, advanced insulation, and a digital control panel, it meets the demands of modern hot water needs while promoting energy savings and ease of use. Whether for a bustling family home or a commercial establishment, the DW-1810 stands out as a dependable choice for hot water solutions.