Hi, I copied this info for you, hope it helps.
The temperature of an tank-type electric water heater is controlled by a thermostat. The thermostat has a visible scale and is adjustable by turning the control to the desired temperature. The typical thermostat control is adjusted by using a screwdriver. Remember... The recommended minimum temperature is 130 degrees!
The thermostat is concealed behind a metal plate and may also be covered with insulation. TURN OFF THE POWER BEFORE REMOVING THE PLATE. This is important... There may be exposed high voltage wires under the cover.
IMPORTANT NOTE: Most electric water heaters have two thermostats... One near the top of the tank and one near the bottom. It is important that these both be adjusted to the same temperature. Otherwise, one element may never go on causing premature wear to the other. Also, the usable output of hot water or the time it takes to heat the tank may decrease... Depending on which thermostat is set higher!
The temperature of an tank-type electric water heater is controlled by a thermostat. The thermostat has a visible scale and is adjustable by turning the control to the desired temperature. The typical thermostat control is adjusted by using a screwdriver. Remember... The recommended minimum temperature is 130 degrees!
The thermostat is concealed behind a metal plate and may also be covered with insulation. TURN OFF THE POWER BEFORE REMOVING THE PLATE. This is important... There may be exposed high voltage wires under the cover.
IMPORTANT NOTE: Most electric water heaters have two thermostats... One near the top of the tank and one near the bottom. It is important that these both be adjusted to the same temperature. Otherwise, one element may never go on causing premature wear to the other. Also, the usable output of hot water or the time it takes to heat the tank may decrease... Depending on which thermostat is set higher!