Water Level Control Relay for Boiler and Steam Generator

Product Description

The water level control relay is designed for use in boilers, steam generators, and water heating systems, where it provides automatic shutdown of the electric heating system when there is insufficient water in the tank.
It prevents the heater from running "dry," protecting the equipment and extending its lifespan.

The device operates with two independent capacity systems - TANK (well/tank) and BOILER (boiler/heater).

Equipment Functions

Tank Level Control (TANK)

• While the water level is above the TANK electrode, the pump operates (the "motor running" indicator is lit).

• If the water level falls below the TANK electrode, the pump turns off.

Boiler/Heater Level Control (BOILER)

• When the sensor level reaches BOILER, the pump turns off - the tank is full.

• If the level in the boiler falls below the BOILER electrode, a 10-second delay is triggered, after which the pump automatically turns on and refills water.

Electric Water Heating Control (RES Elect)

• When the water in the boiler reaches the level of the RES Elect electrode, the heater will turn on (the light indicator is off).

• If the level falls below RES Elect, the heater will turn off and the indicator lamp will light up.

This function protects the heater from overheating or damage when the tank is empty.

Wiring (Overview)

• Com Elect - common electrode (must be connected to the metal body of the tank/boiler; if not conductive, use a separate electrode)

• Tank Elect - electrode for well/tank level

• Boiler Elect - electrode for boiler level

• Res Elect - electrode for heater control

• Res Out - output for heater connection

• Water Not - output for signal lamp (no water)

Important Note

• Electrodes are not included in the kit - they must be ordered separately.

• We also recommend purchasing 3 pieces of 2 A circuit breakers to protect the input and output circuits.

• Wire the relay exactly according to the manufacturer's diagram.

• If the contact is not conductive, a special common electrode must be used.

Technical Specifications

• Rated Voltage: 220 V AC

• Operating Voltage Range: 90-110%

• Frequency: 50/60 Hz

• Power Consumption: < 3 VA

• Operating Temperature: -40...+50 °C

• Connection: screw terminals

• Mounting: DIN rail or mounting panel

• Water Level Control Relay

• Documentation / Wiring Diagram
  (electrodes not included)