Relays for water level control in boilers and steam generators

Product description

The water level relay is designed for use in boilers, steam generators and water heating systems , where it ensures automatic shutdown of the electric heating system when there is not enough water in the tank.
It prevents the heating unit 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/heater) .

Equipment functions

Tank level check (TANK)

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

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

Level control boiler/heating (BOILER)

• When the boiler fill level is reached, the pump switches off - the tank is full.

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

Electrical control of hot water preparation (RES Elect)

• When the water level in the boiler reaches the RES Elect value , the heating element switches on (indicator light off).

• If the fill level drops below RES Elect, the heater switches off and the indicator light illuminates.

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

Cabling (Overview)

• Com Elect - common electrode (must be connected to the metal body of the tank/boiler; if non-conductive, use a separate electrode)

• Tank Elect - Level electrode for wells/tanks

• Boiler Elect - Electrode for boiler level

• Res Elect - Electrode for heating control

• Res Out - Output for heating connection

• Water Emergency - Output for the signal lamp (no water)

Important NOTE

• The electrodes are not included in the scope of delivery - they must be ordered separately.

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

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

• If the socket is non-conductive, a special common electrode must be used.

Technical parameters

• Nominal 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

• Water level control relay

• Documentation / Circuit diagram
  (Electrode not included)