electric water-heater tank [2]

high-temperature cutoff

Mechanism cutting off the flow of electric current when the temperature of the water exceeds a set value.

overflow pipe

Pipe through which water escapes when maximum pressure is exceeded.

pressure relief valve

Device for lowering the pressure inside the tank by releasing excess hot water.

drain valve

Device for emptying water from the tank.

electric supply

Point where the hot-water tank connects with the household circuit.

access panel

upper thermostat

Device that senses changes in temperature and automatically switches the upper heating element on or off.

hot-water outlet

Outlet pipe for hot water flowing into the hot-water circuit.

cold-water supply

Inlet pipe for cold water to the tank.

insulation

Material placed between the tank and the outer walls of the hot-water tank in order to reduce heat loss.

tank

Insulated reservoir in which hot water is stored; it is usually cylindrical and enameled or glazed.

lower heating element

Coated electric resistor immersed in the lower part of the tank to heat the water.

lower thermostat

Device that senses changes in temperature and automatically switches the lower heating element on or off.

upper heating element

Coated electric resistor immersed in the upper part of the tank to heat the water.

anode rod

Magnesium-coated electrode protecting the tank from the corrosive effects of the water.