Electric Water Heater Upper Thermostat Wiring

In the electric water heater and thermostat wiring series we will be showing the continuous i e.

Electric water heater upper thermostat wiring.

Upper thermostat makes it possible for you to have cold water supply when you turn on the tap of hot water. Wiring an electric water heater also includes the thermostats. The lower thermostat just controls the lower element. Most residential water heaters have an upper and a lower thermostat.

An electric hot water heater has two thermostats controlling two separate heating elements one in the upper half of the tank one in the lower half. 230v and 240v continues dual element electric water heater thermostat wiring. Collection of wiring diagram for hot water heater thermostat. Structure of water heater.

You may see the previsions post for. The standard residential electric water heater control circuit consists of a manual reset high limit switch an upper thermostat lower thermostat two heating elements and wires. The wiring connection for both single phase 120v and 240v are same i e. Usually when the upper thermostat goes bad you will have no hot water at all while a bad lower thermostat makes itself known when there is only a small amount of hot water before the tap water goes cold.

These are usually set up for non simultaneous operation. The water heater element is connected to the thermostat via t 2 as hot and l 4 as neutral. Simultaneous wiring of dual heating elements 9000 watts each of 4500 watts and thermostats for 240v and 230v electric water heater. The line is connected to the l 1 terminal while neutral or second line is connected to the l 3 terminal.

The electric heater has a total of two thermostats each performing distinct functions. Whatever is the case you need to learn about the basics of how a water heater works. When power is initially turned on to the unit the upper element is energized and heats the water in the upper third of the tank see figure 1. A wiring diagram is a simplified standard pictorial representation of an electrical circuit.

In the above diagram i shown that the upper water heater element is switched off and lower heater element is switch on. Meaning that only one element is allowed to heat at a time. See troubleshooting electric hot water heaters or water heater element testing for other related topics. It shows the elements of the circuit as simplified forms and also the power as well as signal connections between the tools.

Note that these element is 220 volts ratings and you can also 440 volts heater elements but you need to provide the line supply my mean to lines or two hot wires supply 440 volts.