A thermostat controls the power to the heating elements. If the water in the tank is below the desired temperature, the thermostat will turn on the heating element. This thermostat also includes a manual reset high limit.
Rheem® Upper Manual Reset Electric Thermostat, Series: 59T/66T, DPST Switch, Differential Temperature: 5 to 15 deg F, Temperature Settings: 190 deg F High Limit, 110 to 170 deg F, Accuracy: +/-5 deg F, Suitable For Use With: Model 6UT02, 6UT04, 6UT05, 6UT06, 6UT09 and 6UT10 Water Heaters
| Accuracy | : | +/-5 deg F |
| Differential Temperature | : | 5 to 15 deg F |
| Series | : | 59T/66T |
| Suitable For Use With | : | Model 6UT02, 6UT04, 6UT05, 6UT06, 6UT09 and 6UT10 Water Heaters |
| Switch Type | : | DPST |
| Temperature Rating | : | 110 to 170 deg F |
| Temperature Settings | : | 190 deg F High Limit |