Relay for water level control in 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 ensures automatic shutdown of the electric heating system if there is insufficient water in the tank.
It prevents the heating system from running "dry," protecting the equipment and extending its service life.

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

Equipment functions

Tank level control (TANK)

• As long as the water level is above the TANK electrode, the pump runs (the "motor operation" indicator is on).

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

Boiler/heating level control (BOILER)

• When the level of the BOILER sensor is reached, the pump switches off - the tank is full.

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

Electric water heating control (RES Elect)

• When the water in the boiler reaches the RES Elect level, the heating is switched on (indicator light off).

• If the level falls below the RES Elect, the heating element is switched off and the indicator light turns on.

This function protects the heating element from overheating or damage if the tank is empty.

Wiring (overview)

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

• Tank Elect - well/tank level electrode

• Boiler Elect - level electrode for boiler

• Res Elect - electrode for heating control

• Res Out - output for heating connection

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

Important note

• The electrodes are not included - these must be ordered separately.

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

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

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

Technical parameters

• 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

• Relay for water level control

• Documentation / wiring diagram
  (electrodes not included)