Relay for water level control in boilers and steam generators

Product description

The water level relay is intended for use in heating 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 heater from running "dry," thus protecting the system and extending its lifespan.

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

Equipment functions

Tank level control (TANK)

• As long as the water level is above the TANK electrode, the pump runs (the "Motor running" indicator lights up).

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

Level control boiler/heating (BOILER)

• When the BOILER level 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 triggered, after which the pump automatically switches on and refills the water.

Electric control of hot water preparation (RES Elect)

• When the water level in the boiler reaches the RES Elect value, the heater switches on (control light off).

• If the level falls below the RES Elect, the heater switches off and the control light turns on.

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 - fill level electrode for well/tank

• Boiler Elect - electrode for boiler fill level

• 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 - 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 wiring 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 plate

• Relay for water level control

• Documentation / Wiring diagram
  (Electrodes not included)