Commercial Gas Boilers

OTHER GENESIS® FEATURES

FACTORY-INSTALLED CIRCULATING PUMP

Pre-wired, integrally controlled by EMC-5000 control

Adjustable pump time delay allows removal of usable residual heat during stand-by cycle, virtually eliminating stand-by heat loss

ASME PRESSURE RELIEF VALVE 125# FACTORY INSTALLED FLOW SWITCH ALTERNATE THERMOSTAT TERMINALS (24V) MANUAL RESET HIGH LIMIT

BLOCKED FLUE SWITCH

BLOCKED INLET SWITCH

AIR PROVING SWITCH

GENESIS® OPTIONS

CSD-1 CODE

NEW YORK CODE

CALIFORNIA CODE

ALARM BELL

ALL-BRONZE CIRCULATING PUMP

HARD WATER PUMP

BRONZE HEADERS

STACK RACK

LOW WATER CUT-OFF

EXTENDED VENTING KIT

SEQUENCING CONTROL PANEL (FOR 2-8 BOILERS)

COMBUSTIBLE FLOOR SHIELD

DRY CONTACTS FOR ANY BOILER FAILURE

CUPRO-NICKEL HEAT EXCHANGER

CSA CERTIFIED VENT KIT

GENESIS® venting versatility direct-venting

sidewall venting

conventional venting

For the most current Genesis venting distances/information, consult the Genesis Product Manual, available through your local A. O. Smith representative, or online at www.hotwater.com.

model

btu input

 

 

 

recovery — gallons per hour at °f temperature rise

 

 

 

 

 

 

 

 

 

 

 

 

 

 

number

per hour

40°

50°

60°

70°

80°

90°

100°

110°

120°

130°

140°

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

gw/gwo-300

300,000

761

609

507

435

380

338

304

277

254

234

217

 

 

 

 

 

 

 

 

 

 

 

 

 

gw/gwo-400

399,900

1014

811

676

580

507

451

406

369

338

312

290

 

 

 

 

 

 

 

 

 

 

 

 

 

gw/gwo-500

500,000

1268

1015

845

725

634

564

507

461

423

390

362

 

 

 

 

 

 

 

 

 

 

 

 

 

gw/gwo-650

650,000

1649

1319

1099

942

824

733

659

600

600

507

471

 

 

 

 

 

 

 

 

 

 

 

 

 

gw/gwo-750

750,000

1902

1522

1268

1087

951

845

761

692

634

585

544

 

 

 

 

 

 

 

 

 

 

 

 

 

Gas Supply Pressure: 13.8” W.C. maximum natural and propane; 4.5” W.C. minimum natural; 11.0” W.C. minimum propane. Genesis boilers are approved for installation on noncombustible flooring in an alcove with minimum clearance to combustibles of: 3 inches sides, and back; 3 inches top, front alcove; 6 inches vent.

For installation on combustible flooring use the optional Combustible Floor Kit.

Genesis boilers must be connected to a single phase dedicated line source that is: 120 volts, 60 hertz and 20 amps.

Revised November 2008

PG 3 OF 4

www.hotwater.com

AOSDG25200

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A.O. Smith GW/GWO-300, GW/GWO-750 warranty Other Genesis Features FACTORY-INSTALLED Circulating Pump

GW/GWO-750, GW/GWO-300 specifications

A.O. Smith is a reputable manufacturer known for its high-quality water heating solutions, and the GW/GWO-300 and GW/GWO-750 models exemplify the brand's commitment to performance and reliability. These gas water heaters are engineered to provide ample hot water for residential and commercial applications, making them an ideal choice for various settings.

The GW/GWO-300 and GW/GWO-750 models feature a robust design that ensures longevity and efficiency. Both units are available in natural gas and propane varieties, allowing users to select the fuel type that best suits their needs. One of the standout features of these models is their energy efficiency. They are equipped with advanced insulation, which minimizes heat loss, ensuring that hot water is readily available while reducing energy costs.

In terms of technology, these models utilize a reliable burner system that ensures quick heating and consistent output. The GW/GWO-300 boasts a capacity of 30 gallons, making it suitable for smaller households or light commercial use. The GW/GWO-750, on the other hand, offers a significantly larger capacity of 75 gallons, catering to larger households or businesses that require a steady supply of hot water.

Both models come with an integrated thermostat that provides precise temperature control, allowing users to set their preferred water temperature for maximized comfort. Additionally, they are equipped with a digital display that provides vital data, such as water temperature and system performance metrics, ensuring users can monitor their water heating system effortlessly.

Safety features are also a key aspect of the GW/GWO series. These models include advanced safety mechanisms such as flame arrestors and temperature-pressure relief valves, ensuring user safety and protecting the unit from overheating or excessive pressure buildup.

Moreover, A.O. Smith places a strong emphasis on customer support, offering comprehensive warranties and accessible customer service. This dedication to service adds an extra layer of confidence for users investing in the GW/GWO-300 and GW/GWO-750 models.

In summary, the A.O. Smith GW/GWO-300 and GW/GWO-750 water heaters represent a blend of efficiency, safety, and advanced technology. With their varying capacities and user-friendly features, these models are designed to meet diverse hot water needs, making them a smart choice for anyone looking to invest in a reliable water heating solution.