Fan Coil & HVAC Control

ECB 400

The Distech Controls ECB-400 Series controllers are microprocessor-based programmable controllers designed to control various building automation applications.

Controls air handling units, chillers, boilers, pumps, cooling towers, and central plant applications. This series supports up to two ECx-400 Series I/O extension modules.


These controllers use the BACnet® MS/TP LAN communication protocol


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The ECB-400 Series can also be used for lighting control applications. This controller uses the BACnet® MS/TP LAN communication protocol and is BTL®-Listed as BACnet Advanced Application Controllers (B-AAC).

These controllers meet the requirements of the following applications:

  • Air handling units
  • Chillers
  • Boilers
  • Cooling towers
  • Heat-exchangers
  • Pumps
  • Lighting control

This controller has various software configurable universal inputs and software configurable universal outputs, and covers all medium to large-size industry-standard HVAC applications.

Rugged hardware inputs and outputs eliminate need for external protection components, such as diodes for 12V DC relays.

  • 12 universal inputs including 4 for fast pulse counting and metering applications
  • 12 universal outputs (ECB-400 Series), 8 digital outputs (TRIAC), and 4 universal outputs (ECB-403 Series)
  • Optional HOA switch with potentiometer to locally override and monitor overridden outputs
  • 2 calendar, 10 schedule, 30 loop (PID), and over 300 BACnet objects
  • 15 VDC power supply to power 4-20mA transducers
  • Internal alarm functionality
  • ECB-450 and ECB-453 include live graphics color display (integrated LCD operator interface)
  • Open-to-Wireless™ Solution: support of up to 28 wireless battery-less inputs

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