Safety Components Of Water Heater

Human skin can take water temperature up to 30 to 40 degrees. Safety aspects of the water heater becomes a very important consideration. The key safety elements to consider are as follows:

1)Thermostat:

The thermostat regulates temperature by cutting power supply beyond a set temperature. It works as a temperature sensor. When the sensor is heated, the liquid medium expands and break the circuit.

2)Thermal cut-out:

In case the thermostat malfunctions, the thermal cut-out comes into play and cuts off the complete power supply when the temperature goes beyond 88 degrees. The water heater employs a high-temperature limit protection switch which can be reset by manual operation. The switch rapidly cuts off the phase line and neutral line simultaneously to guarantee safety.

3)MFSV: Multi- Function Safety Valve

This comes into play when there is a leakage of the water heater. It occurs due to buld up of pressure inside the water tank. There are 4 functions performed:

  • Pressure Release Valve: When the pressure is more the 8bar pressure, release valve will help to release the pressure using the spring system.
  • Non-Return Valve: This avoids the hot water to seep into the cold water line.
  • Anti -Vacuum Valve: When there is no water in the overhead tank and water heater, there will be a vacuum generation inside the tank and it will cause harm to the tank. Anti-vacuum valve will help to release the vacuum.
  • Drain Valve: This is useful at the time of maintenance to remove the water from the water tank.

4)Earth leakage circuit breaker (ELCB)

This helps in protecting against short circuits. It stops the electricity supply in case any unwanted event happens, like short circuit or high voltage and protects the geyser. The electricity supply can be started manually by using a reset switch. It works in two modes:- 1) Voltage earth leakage circuit breaker & 2) Current earth leakage circuit breaker.                      

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