OPERATION

CAUTION

DO NOT OPERATE THE HEATER WITHOUT INSTALLING AN APPROVED TEMPERATURE AND PRESSURE RELIEF VALVE IN THE OPENING PROVIDED IN THE TANK. GROUND THE HEATER TO GUARD AGAINST ELECTRIC SHOCK FROM THE HEATER OR WATER SYSTEM. NEVER OPERATE THE HEATER WITHOUT FILLING WITH WATER PER THE FILLING INSTRUCTIONS. FAILURE TO DO SO WILL DAMAGE INTERNAL PARTS.

FILLING

1.Close the water heater drain valve by turning hand-wheel to right (clockwise).

2.Open a nearby hot water faucet to permit the air in the system to escape.

3.Fully open the cold water inlet valve allowing the heater and piping to be filled.

4.Close the hot water faucet as water starts to flow.

5.Turn on the electrical switch to the water heater.

WARNING

DO NOT ATTEMPT TO OPERATE HEATER WITH COLD WATER INLET VALVE CLOSED.

Figure 3 shows the approximate time-to-burn relationship for normal adult skin. The thermostats on your water heater have a linear relationship between degrees of angular rotation and the corresponding change in temperature. Thus rotating the temperature adjustment indicator 30 angular degrees will result in a 10 degree Fahrenheit change in water temperature.

Temperature

Time to Produce 2nd & 3rd

Setting

Degree Burns on Adult Skin

180° F (82° C)

Nearly instantaneous

160° F (71° C)

About 1/2 second

150° F (66° C)

About 1-1/2 seconds

140° F (60° C)

Less than 5 seconds

130° F (54° C)

About 30 seconds

125° F ( 52° C)

About 2 minutes

120° F (49° C)

More than 5 minutes

 

 

 

FIGURE3

TEMPERATUREADJUSTMENT

The water temperature is controlled by surface mounted thermostats with hi-limit. There is one mounted firmly against the tank directly above each element. The thermostats of A-8 circuit are adjustable from approximately 120°F (49°C) (lowest setting) to 180°F (82°C) (highest setting). The thermostat of C-2 circuit is adjustable from approximately 110°F (43°C) to 170°F (77°C) with a factory set point 120°F (49°C). The over temperature device (hi-limit) attached to each thermostat has a manual reset.

TEMPERATURE REGULATION

DANGER

THE WATER HEATER IS EQUIPPED WITH AN ADJUSTABLE THERMOSTAT TO CONTROL WATER TEMPERATURE. HOT WATER AT TEMPERATURES DESIRED FOR AUTOMATIC DISHWASHER AND LAUNDRY USE CAN CAUSE SCALDS RESULTING IN SERIOUS PERSONAL INJURY AND/OR DEATH. THE TEMPERATURE AT WHICH INJURY OCCURS VARIES WITH THE PERSON’S AGE AND TIME OF EXPOSURE. THE SLOWER RESPONSE TIME OF CHILDREN , AGED OR DISABLED PERSONS INCREASES THE HAZARD TO THEM. NEVER ALLOW SMALL CHILDREN TO USE A HOT WATER TAP, OR TO DRAW THEIR OWN BATH WATER. NEVER LEAVE A CHILD OR DISABLED PERSON UNATTENDED IN A BATHTUB OR SHOWER.

It is recommended that lower water temperatures be used to avoid the risk of scalding. It is further recommended, in all cases, that the water temperature thermostats (See Figure 3) be set for the lowest temperature which satisfies your hot water needs. This will also provide the most energy efficient operation of the water heater.

ADJUSTABLE UPPER

ADJUSTABLE

THERMOSTAT BEHIND

LOWER (SINGLE)

JUNCTION BOX DOOR

THERMOSTAT

FIGURE4

NOTE: It is not necessary to adjust the upper thermostat for a dual element unit. However, if it is adjusted above the factory set point 140°F (60°C) it is recommended that it not be set higher than the lower thermostat setting.

To change the temperature setting:

DANGER

1.Turn off the heater electrical supply. Do not attempt to adjust thermostat with power on.

2.Open the junction box door (for upper thermostat of dual element water heater only) and/or remove the (lower) thermostat access panel. Do not remove the plastic personnel protectors covering the thermostats. The thermostat is factory pre-set at 140°F (60°C) for dual element units or at 120°F (49°C) for single element units.

7

Page 7
Image 7
A.O. Smith del and del warranty Operation, Filling, Temperatureadjustment, Temperature Regulation

del and del specifications

A.O. Smith is a leading manufacturer in the water heating industry, known for its innovative solutions and commitment to energy efficiency. Established in 1874, the company has built a reputation for producing high-quality water heaters for both residential and commercial applications. With a focus on research and development, A.O. Smith incorporates cutting-edge technologies into its products, positioning itself as a pioneer in modern water heating solutions.

One of the main features of A.O. Smith water heaters is their energy efficiency. The company offers a range of ENERGY STAR® rated models, designed to reduce energy consumption and lower utility bills. Their commitment to sustainability is evident in products such as tankless water heaters, which provide hot water on demand while eliminating standby heat loss, a common issue with traditional tank-style heaters.

A.O. Smith emphasizes convenience and performance in its water heating solutions. The company's hybrid electric water heaters, for example, combine traditional heating elements with heat pump technology, capturing ambient heat to heat water more efficiently. This not only provides significant energy savings but also allows for fast recovery rates to meet high hot water demands.

Another notable aspect is the Smart Technology integration found in many of their products. A.O. Smith’s smart water heaters can be connected to Wi-Fi, allowing users to monitor usage, track energy consumption, and receive maintenance alerts via a smartphone app. This level of connectivity adds a layer of convenience and helps homeowners ensure their systems are operating optimally.

Durability and reliability are also hallmarks of A.O. Smith water heaters. They utilize advanced materials and engineering techniques to enhance the lifespan of their products. Features like tank corrosion protection, improved insulation, and innovative venting options contribute to reduced maintenance costs and prolonged product life.

A.O. Smith caters to a diverse range of customer needs with a wide selection of products, including both gas and electric models. From residential systems to large-scale commercial applications, their comprehensive product line ensures that customers can find the right solution tailored to their specific hot water requirements.

In conclusion, A.O. Smith is a forward-thinking company that continues to lead the water heater industry through innovation, energy efficiency, and advanced technology. Their commitment to quality and sustainability makes them a trusted choice for consumers looking for reliable hot water solutions.