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  • 0-2.0″ W.C. precision air flow sensor
  • Actuator (CW, CCW)
  • 5 Universal Inputs (0-5V, 0-10V, 0-20 mA, thermistor, dry contact or open-collector)
  • 4 Universal Outputs (0-10V or Triac)

The Smart I/O™ ECVAV programmable variable air volume (VAV) controller is a state-of-the-art LonWorksÔ controller with a factory integrated Direct-Coupled Actuator. On-board Airflow Sensor and motor control are complemented with an additional 9 channels of analog and digital I/O. The I/O is monitored and controlled by a Neuron 3150 chip with Free Topology communication over a LonWorks® network. The ECVAV can be utilized in many fixed and custom pressure-independent and pressure-dependent damper control applications. The ECVAV sets a new standard in modular design to allow simple and easy replacement of the airflow pressure sensor, control circuit board and actuator assembly. The unprecedented, modular design provides for the lowest life cycle cost VAV controller in the industry. The ECVAV’s removable terminal blocks further enhance its functional “real world” design.

The ECVAV controller is protected from reverse power supply input wiring, over-voltages, transients, and other common events that can damage unprotected inputs and outputs. The versatile and flexible I/O allows numerous VAV applications to be developed and implemented with the ECVAV.

User defined algorithms and functions can be programmed using VisualControlÔ, NodeBuilder, LonBuilder or other third party LONWORKS programming tools. The application program can be downloaded over the free topology network and is stored in non-volatile memory so it is retained even after loss of power.

The ECVAV assembly is field mounted to the VAV box damper shaft similar to the mounting of a standard actuator. Field wiring 18 to 22 AWG (2.0 to 0.34 mm2) passes through the conduit opening, connecting to the removable terminal blocks located under the snap-cover.


Communication: LONTALK Protocol
Transceiver: FTT-10, Free Topology
Processor: Neuron 3150 @ 20 MHz
Memory: 64K bytes FLASH, 2K bytes SRAM (Neuron), 0.5K bytes EEPROM (Neuron)


Nominal Input Voltage: 24 VAC/DC
Input Voltage Range: 21-28 VAC or 21-39 VDC
Typical Consumption: 4 VA
Maximum Consumption: 8 VA
Output Power Protection: +20V Output auto-reset fuse


Period: 2 Years (Limited)


Operating Temperature: 0 °C to +65.5 °C, 32 °F to 150 °F
Storage Temperature: -40 °C to +65.5 °C, -40 °F to 150 °F
Relative Humidity: 5% to 95% (non-condensing)
Differential Pressure Sensor
Range: 0-500 kPa (0-2”H2O)
Accuracy: ±1% FS (25°C, 77°F)


Motor: Honeywell ML6161
Torque/Timing: 4 Nm (35 In. lb.)/90 sec.
Angle of Rotation: 90 degree stroke
Shaft Diameter Range: 10-13 mm (3/8-1/2”)


Number: 5 Univ. plus dedicated airflow input
Voltage: 0-5 Volts, 0-10 Volts
Current: 0-20 mA
Thermistor: Type 2, 3: 10Kohms (25°C, 77°F)
Digital: Dry Contact
Resolution: 12 bits
Accuracy: ±1% FS (25°C, 77°F)
Protection Circuitry: Transient Over voltage, ESD


Number: 4 Univ. plus dedicated actuator outputs
Digital: Triac 1.0 A @ 24 VAC Internal Source
Voltage: 0-10 Volts

Analog Output

Resolution: 10 bit
Accuracy: ±1% FS (25°C, 77°F)
Protection Circuitry: ESD
Mechanical Dimensions: L 153 x W 92 x H 95 mm, (6.02” x 3.62” x 3.74”)
UL94-5V: Meets Plenum Requirements

ECVAV – Model B

56K flash memory only

ECVAV – Model M

Standard model, selectable memory (flash, SRAM)

ECVAV – Model C

Real time clock with super cap back-up, selectable memory (flash, SRAM) and 8K serial EEPROM


10000 St Clair Avenue

Fairview Heights, IL 62208


(618) 394-0300