TEMPERATURE REGULATION
HIGH TEMPERATURE LIMIT CONTROLS (ECO)
MIXING VALVES
This water heater is equipped with an ECO (energy cut off). This switch is adjustable, up to 190 degree F. An ECO is a normally closed switch that opens (activates) on a rise in temperature. If the ECO switch contacts open (activate) due to abnormally high water temperatures the control system will
When the ECO switch contacts open (activate) the electronic control system locks out and displays a Fault message. Voltage to the contactor coils and heating elements is terminated to prevent further heating operation. Should the ECO activate, the water temperature must drop below 120°F/49°C before the control system can be reset. Once the water temperature has cooled below this point the power
DANGER
Water temperature over 125°F (52°C) can cause severe burns instantly resulting in severe injury or death.
Children, the elderly and the physically or mentally disabled are at highest risk for scald injury.
Feel water before bathing or showering.
Temperature limiting devices such as mixing valves must be installed when required by codes and to ensure safe temperatures at fixtures.
supply to the water heater must be turned off and on again to reset the control system.
THERMOSTAT CONTROLS
The water heaters covered in this instruction manual are equipped with adjustable thermostat controls to control water temperature. Hot water temperatures required for automatic dishwasher and laundry use can cause scald burns resulting in serious personal injury and/ or death. The temperature at which injury occurs varies with the person’s age and duration of exposure. The slower response time of children, the elderly or disabled persons increases the hazards to them. Never allow small children to use a hot water tap or draw their own bath water. Never leave a child or disabled person unattended in a bathtub or shower. The water heater should be located in an area where the general public does not have access to set temperatures.
Setting the water heater temperatures at 120°F will reduce the risk of scalds. Some States require settings at specific lower temperatures.
See Figure 1 which shows the approximate
Water heated to a temperature which will satisfy clothes washing, dish washing, and other sanitizing needs can scald and cause permanent injury upon contact. Short repeated heating cycles caused by small hot water uses can cause temperatures at the point of use to exceed the water heater’s temperature setting by up to 20°F (11°C).
Some people are more likely to be permanently injured by hot water than others. These include the elderly, children, the infirm and the physically/mentally disabled. Figure 1 shows the approximate time-
In addition to using the lowest possible temperature setting that satisfies the demand of the application a Mixing Valve should be installed at the water heater (see Figure 2) or at the hot water taps to further reduce system water temperature.
Mixing valves are available at plumbing supply stores. Consult a Qualified Installer or Service Agency. Follow mixing valve manufacturer’s instructions for installation of the valves.
Water Temperature | Time to Produce 2nd & 3rd | |
Degree Burns on Adult Skin | ||
|
180°F (82°C) |
| Nearly instantaneous |
170°F (77°C) |
| Nearly instantaneous |
160°F (71°C) |
| About 1/2 second |
150°F (66°C) |
| About |
140°F (60°C) |
| Less than 5 seconds |
130°F (54°C) |
| About 30 seconds |
120°F (49°C) |
| More than 5 minutes |
| FIGURE 1. | |
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