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A. O. Smith On-Demand
Gas Water Heaters
Endless Hot Water. Endless Innovation.
Trust the innovation leader to give
you more choices in on-demand water
heating. A. O. Smith's comprehensive
line supplies endless hot water when
you ask for it...with high efficiency that
saves money on both residential and
commercial applications.
Product Features:
Innovative Technology
Energy Efficiency
■
■
Indoor and outdoor installation options
Up to 84% thermal efficiency,
providing significant energy
■
Continuous hot water on demand
cost savings
(up to 9.8 GPM)
■
Whole house water heating solution
Sleek Design
■
Direct electronic ignition –
■
Smooth pleasant lines and
no pilot light
rounded corners
■
On-board diagnostics and
■
Matching pipe cover available
safety monitoring
for finished appearance
■
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
Commercial
Application Features:
• ASME Certified
• Hot water capacity of 0.6 – 9.8 GPM
• 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
Remote
Temperature Display
Controller
Shows the temp setting
All models come with a
Error Codes
Remote controller that
When a fault is detected an error code
flashes at the temperature setting
can set the temperature
within a specific range.
Thermostat
Increases/decreases temp setting
Model Selection Guide
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).
The best way to measure your
incoming ground water temperature
is to use a thermometer to measure
SOUTHERN ZONE
cold water temperature during the
coldest season of the year. To
Average Ground Water
simplify the process, use this map to
Temperature: 62°F to 77°F
determine whether your installation
location is in the Southern Zone,
Central Zone or Northern Zone.
Peak hot water demand.
Appliances or fixtures
in simultaneous use
The next step is to determine how
during peak demand
much hot water will be required
during the busiest usage period
1
("peak demand"). To use the chart,
2
consider all appliances and fixtures
that use hot water including
3
lavatory faucets, kitchen faucets,
washing machines, dishwashers,
4
showers and bathtubs. Be sure to
5
determine how many appliances
and fixtures will be used at the
6 or more
same time ("peak demand").
*Note: This selection guide is based on 120°F outlet water temperature.
In Use Indicator Light
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
On/Off Button
Will turn the water heater on/off
Average Ground Water Temperatures
CENTRAL ZONE
NORTHERN ZONE
Average Ground Water
Average Ground Water
Temperature: 52°F to 61°F
Temperature: 37°F to 51°F
Ground Water Temperature Zone
Southern Zone
Central Zone
Northern Zone
305 or 505
305 or 505
305 or 505
305 or 505
305 or 505
305 or 505
505 or 705
(2) 505 or 705
(2) 505
(2) 505
(2) 505
(2) 505
(2) 505
(2) 705
(2) 705
Multi-system
Multi-system
Multi-system
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