Dual Duct
EVC Series
VAV Dual Duct
Controller & Actuator
The VAV package consists of 2 parts, namely the
thermostat and the EVC which is a combination of an
actuator and a controller, which mounts directly to the
damper jackshaft on the side of the VAV box.
The dual duct version consists of two models:
a master controller (EVCBM14WIT2S) mounted on the
cold duct damper and a slave controller (EVCS14)
mounted on the hot duct damper.
Typical Dual Duct Application
Dual Duct
Dual duct air handling systems divide supply air
at the central fan. Hot and cold air flow through two
separate inlets and the air is mixed as defined by the controller
and the thermostat in the controlled space. The mixed air is then
discharged through one outlet into the space.
www.neptronic.com
Models
• EVCBM14WI1S: Master Controller (cold duct)
• EVCS14: Slave Controller (hot duct)
Control Features
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Field configured VAV algorithms
Built-in actuator with brushless motor (70 in.lb.) [8 Nm]
On board differential pressure sensor
Simple air balancing and commissioning via thermostat
Precise temperature control with programmable PI (Proportional-Integral) function
Selectable proportional control band and dead band per signal ramp
Selectable internal or external temperature sensor (10Kø)
Change over by contact or external temperature sensor
Internal and external temperature sensor calibration
Anti-freeze protection
Configurable integration time factor
Configurable anti-cycling delay
BACnet Features
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BACnet® MS/TP @ 9600, 19200, 38400, or 76800 bps
Automatic Baud Rate Detection
Copy and broadcast configuration to other networked EVCB controllers
Automatically assigns the MAC address and the device instance
Selectable MAC Address by DIP switch
Over 100 BACnet Objects available for status, operation, configuration
Inputs and Outputs
• 2 Analog Inputs
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- Selectable input type (External temperature sensor, external changeover sensor, normally cool changeover
contact, normally Heat changeover contact, or off)
2 Digital Inputs
- DI1: Selectable input type (NO/NC occupancy, or NO/NC Night Set Back)
- DI2: BACnet only
2 TRIAC outputs
- Selectable signal ramp (Cool 1, Cool 2, Heat 1, Heat 2, Heat 3 or Off)
- Selectable output signal (On/Off, Pulse, or Floating)
- Configurable on/off closing and opening level (if set to On/Off)
- Selectable floating time and direction (if set to Floating)
2 Analog Outputs
- Selectable signal ramp (Cool 1, Cool 2, Heat 1, Heat 2, Heat 3 or Off)
- Configurable minimum and maximum voltage
Operational Features
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Backlit LCD with simple icon and text driven menus
Manual night set back or no occupancy override
Multi level lockable access menu
Lockable setpoint
Removable, raising clamp, non-strip terminals
24Vac thermal fuse for overheat protection
www.neptronic.com
130015_GB (150821)