Wilo CronoTwin DL-E Tandem Configuration Of NC Dry Rotor Double-headed Pump

Product Advantages

• Energy savings are achieved through integrated electronic power adjustment.

• Simple operation with Green Button Technology and display.

• Multiple operating modes (main/standby operation and parallel operation).

• Configurable fault response tailored to HVAC applications.

• Integrated full motor protection (PTC thermistor sensor) with trip electronics.

• Motor efficiency class IE4.

  
  

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Series Description

• Design: Electronically controlled glanded twin-head pump in in-line design with flange connection and automatic power adjustment.

• Application: Pumping of heating water (acc. to VDI 2035), chilled water and water/glycol mixtures without abrasive substances in heating, chilled water and cooling systems.

  
  

Equipment/Functions

• Operating Modes: Include constant differential pressure (Δp-c), variable differential pressure (Δp-v), PID control, constant speed (n = constant), manual operation level, etc.

  • Operation Buttons and Display: Green button and display, allowing for differential pressure setpoint setting, speed setting, operating mode setting, pump ON/OFF control, configuration of all operating parameters, and fault acknowledgement.

  • External Control Functions: Multiple control inputs and analogue inputs for different controls and signal transmissions.

  • Signal and Display Functions: With collective fault signal, collective run signal, etc.

  • Data Exchange: Wireless data exchange via infrared interface, and can insert IF-Modules to connect to the building automation system.

  • Safety Functions: Full motor protection, access disable, dual pump management (double pump or 2 x single pumps), main/standby operation (automatic fault-actuated switchover), pump cycling main/standby operation after 24 hours, parallel operation (efficiency-optimised peak-load activation and deactivation).

    
    

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• Technical Data

  • Temperature range: -20°C to +140°C.

  • Mains connection: Multiple voltage ranges, 50/60Hz, compliant with electromagnetic compatibility standards.

  • Protection class: IP55.

  • Nominal diameter: DN 40 to DN 200.

  • Max. operating pressure: 16 bar up to +120°C, 13 bar up to +140°C.

• Materials

  • Pump housing and lantern: EN-GJL-250.

  • Impeller: Standard version is EN-GJL-200, special version is Bronze CuSn 10.

  • Shaft: 1.4122.

  • Mechanical seal: AQEGG; other mechanical seals on request.

• Construction: Single-stage, low-pressure double pump in in-line design with switchover valve, mechanical seal, flange connection, lantern, coupling, and drive with integrated electronic speed control.