A.O. Smith ATO-705AN, ATO-705N, ATI-705N, ATI-705AN, ATI-505N, ATO-305N, ATO-505N Remote Controller

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In Use Indicator Light

A.O. Smith On-Demand Gas Water Heaters

Endless Hot Water. Endless Innovation.

Remote Controller

All models come with a Remote controller that can set the temperature within a specific range.

Temperature Display

Shows the temp setting

Error Codes

When a fault is detected an error code flashes at the temperature setting

Indicates hot water is being supplied (a tap is open)

Priority Indicator

Indicates that this controller is setting the temperature

Priority Button

Priority can be changed to another controller if desired

Trust the innovation leader to give you more choices in on-demand water heating. A. O. Smith’s comprehensive

Thermostat

On/Off Button

Increases/decreases temp setting

Will turn the water heater on/off

 

Model Selection Guide

line supplies endless hot water when you ask for it...with high efficiency that saves money on both residential and commercial applications.

Ground water temperature factor.

The temperature of incoming ground water (cold water inlet temperature) varies greatly throughout the U.S. and also fluctuates with change of season. The temperature of water as it enters the water heater will determine the amount of “temperature rise” required to achieve the desired hot water outlet temperature (120°F is recommended).

Average Ground Water Temperatures

Product Features:

Innovative Technology

Indoor and outdoor installation options

Continuous hot water on demand

(up to 9.8 GPM)

Whole house water heating solution

Direct electronic ignition –

Energy Efficiency

Up to 84% thermal efficiency, providing significant energy cost savings

Sleek Design

Commercial

Application Features:

• ASME Certified

• Hot water capacity of 0.6 – 9.8 GPM

The best way to measure your incoming ground water temperature is to use a thermometer to measure cold water temperature during the coldest season of the year. To simplify the process, use this map to determine whether your installation location is in the Southern Zone, Central Zone or Northern Zone.

SOUTHERN ZONE

 

CENTRAL ZONE

 

NORTHERN ZONE

 

 

 

 

 

Average Ground Water

 

Average Ground Water

 

Average Ground Water

Temperature: 62°F to 77°F

 

Temperature: 52°F to 61°F

 

Temperature: 37°F to 51°F

 

 

 

 

 

no pilot light

On-board diagnostics and

safety monitoring

Interior sealed combustion

(does not use interior combustion air)

Applicable for residential hydronic

heating applications

Excellent Performance

12-year limited warranty on heat exchanger, 5-year warranty on all parts

Can be installed outdoors, saving valuable indoor square footage

Smooth pleasant lines and rounded corners

Matching pipe cover available for finished appearance

• Min. – Max. input: 19,000 – 237,000 BTU

• Max. temperature: 185°F with

Commercial Controller

• Ideal for small restaurants, multifamily

housing, hair salons and spas,

laundromats, car washes and other

limited commercial needs

Peak hot water demand.

The next step is to determine how much hot water will be required during the busiest usage period (“peak demand”). To use the chart, consider all appliances and fixtures that use hot water including lavatory faucets, kitchen faucets, washing machines, dishwashers, showers and bathtubs. Be sure to determine how many appliances and fixtures will be used at the same time (“peak demand”).

Appliances or fixtures

 

 

Ground Water Temperature Zone

 

in simultaneous use

 

 

 

 

 

 

 

 

during peak demand

 

Southern Zone

 

 

Central Zone

 

 

Northern Zone

1

 

305 or 505

 

 

305 or 505

305 or 505

 

 

 

 

 

 

 

 

 

2

 

305 or 505

 

 

305 or 505

305 or 505

3

 

505 or 705

 

 

(2) 505 or 705

(2) 505

 

 

 

 

 

 

 

 

 

4

 

(2) 505

(2) 505

 

 

(2) 505

 

 

 

 

 

 

 

 

 

5

 

(2) 505

(2) 705

 

 

(2) 705

 

 

 

 

 

 

 

 

 

6 or more

Multi-system

 

 

Multi-system

Multi-system

*Note: This selection guide is based on 120°F outlet water temperature.

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Contents Innovation on Demand Smith On-Demand Gas Water HeatersRemote Controller

ATI-305N, ATO-505N, ATO-705AN, ATO-305N, ATI-705AN specifications

A.O. Smith is a renowned manufacturer in the water heating industry, offering a diverse range of water heaters that cater to various needs and preferences. Among their well-regarded models are the ATO-705AN, ATI-305N, ATO-505N, ATO-705N, and ATI-705N. Each of these units exhibits distinct features and technologies, combined with reliable performance that exemplifies the high standards associated with the A.O. Smith brand.

The ATO-705AN is a notable residential water heater designed for efficiency and durability. It is equipped with a high-efficiency gas burner, which results in rapid heating while minimizing energy costs. Additionally, the ATO-705AN features a durable glass-lined tank that enhances resistance to corrosion, extending the unit's lifespan. Its compact design allows for easy installation in various settings, making it a versatile choice for homeowners.

The ATI-305N model stands out for its innovative tankless design, offering on-demand hot water heating that eliminates the need for a storage tank. This results in significant energy savings since water is heated only when needed. The ATI-305N's compact profile is perfect for smaller spaces, and it also features advanced digital controls for temperature management, ensuring precise water temperature at all times.

The ATO-505N is another efficient model that focuses on meeting higher hot water demands. It boasts a large capacity tank and includes an ultra-efficient burner for rapid reheating. The unit's built-in insulation helps retain heat, reducing energy costs and ensuring that hot water is readily available when needed. Its robust construction promotes longevity, making it a dependable choice for families.

Similarly, the ATO-705N offers impressive features such as a high recovery rate and large tank capacity, making it an ideal option for larger households. This model is designed to provide a consistent supply of hot water while maintaining superior energy efficiency. The inclusion of a state-of-the-art electronic ignition system enhances safety and reliability.

Lastly, the ATI-705N exemplifies the commitment to energy efficiency that A.O. Smith is known for. With its tankless design, this unit provides a continuous flow of hot water, perfectly suited for homes with multiple bathrooms or high hot water usage. The model features advanced heating technology, allowing for swift temperature adjustments and an excellent energy factor rating.

In summary, A.O. Smith's ATO-705AN, ATI-305N, ATO-505N, ATO-705N, and ATI-705N models each integrate advanced technologies, high efficiency, and durable construction, making them exceptional choices for both residential and commercial applications. These units not only ensure comfort and convenience but also prioritize energy savings and environmental sustainability.