TEMPERATURE REGULATION

HOTTER WATER CAN SCALD: Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish washing, and other sanitizing needs can scald and permanently injure you upon contact. Some people are more likely to be permanently injured by hot water than others. These include the elderly, children, the infirm, or physically/mentally disabled. If anyone using hot water in your home fits into one of these groups or if there is a local code or state law requiring a certain temperature water at the hot water tap, then you must take special precautions. In addition to using the lowest possible temperature setting that satisfies your hot water needs, a means such as a mixing valve, should be used at the hot water taps used by these people or at the water heater. Mixing valves are available from your local plumbing contractor. Follow manufacturer’s instructions for installation of the valves. Before changing the factory setting on the thermostat, see Figure 8.

Never allow small children to use a hot water tap or to draw their own bath water. Never leave a child or handicapped 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 thermostat 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. Thermostat(s) are factory set at 120°F (49°C) unless specified differently by state requirements.

KEEPING THE THERMOSTAT SETTING AT 120°F (49°C)

WILL REDUCE THE RISK OF SCALDS.

Figure 8 shows the approximate time-to-burn relationship for normal adult skin.

TEMPERATURE ADJUSTMENT

To change the temperature setting:

NOTE: It is not necessary to adjust the upper thermostat. However, if it is adjusted above the factory set point (120°F (49°C)) it is recommended that it not be set higher than the lower thermostat setting.

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

2.Remove the thermostat access panels and covers from the thermostats. Do not remove the plastic personnel protectors covering the thermostats.

3.Using a flat tip screwdriver, rotate the adjustment knob to the desired temperature setting.

4.Replace the covers and access panels and turn on heater electrical supply.

TEMPERATURE SETTINGS

It is recommended that the dial be set lower whenever possible.

Temperature

 

Time to Produce 2nd & 3rd

Setting

 

Degree Burns on Adult Skin

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

120°F (49°C)

 

More than 5 minutes

 

 

 

 

FIGURE 8.

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A.O. Smith ECT-55, EJC-30, EJCN-40, ECT-80, ESTT-30, ESTT-40, ECT-52, ECT-66 Temperature Regulation, Temperature Adjustment
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ECL-30, ECT-55, ECT-40, ECT-52, ECT-80 specifications

A.O. Smith is a well-respected name in the water heating industry, renowned for its innovative products and technologies. Among its notable offerings are the EJCN-40 and ECLN-40 electric water heaters, as well as the ECS-50 model. These units exemplify A.O. Smith's commitment to efficiency, durability, and user convenience.

The A.O. Smith EJCN-40 is a reliable and efficient electric water heater with a 40-gallon capacity. It features a foam-insulated tank that ensures minimal heat loss, allowing for increased energy efficiency. This model is equipped with two heating elements, providing faster recovery times and ensuring a steady supply of hot water when needed. The EJCN-40 is designed with a user-friendly thermostat that facilitates easy temperature adjustments, enhancing overall user experience.

Similarly, the ECLN-40 shares many features with the EJCN-40 but is specifically designed for commercial applications. This model prioritizes performance and energy efficiency, making it ideal for businesses that require a dependable hot water supply. The ECLN-40 is built with an impressive heat exchanger that maximizes heat transfer, minimizing energy consumption while maintaining optimal performance.

The A.O. Smith ECS-50 stands out with a 50-gallon capacity, catering to residential and light commercial settings. This unit features a high-quality glass-lined tank, which not only provides superior insulation but also helps prevent corrosion. The ECS-50 is designed with a heavy-duty anode rod that extends the life of the tank by minimizing the risk of rusting. Its compact design allows for versatility in installation, while the integrated thermostat provides ease of use.

A.O. Smith's water heaters are equipped with advanced safety features, including automatic temperature controls and pressure relief valves, ensuring safe operation. Additionally, these models come with Energy Star certification, indicating their compliance with strict energy efficiency standards.

In summary, the A.O. Smith EJCN-40, ECLN-40, and ECS-50 water heaters combine cutting-edge technology with robust design to deliver efficient, dependable hot water solutions. With features that cater to both residential and commercial needs, A.O. Smith continues to set the standard for quality and performance in the water heating industry.
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