Neptronic EVCB14NDT4S, Specification And Installation Instructions

Page: 1 / 20

Networkable VAV Controller
Specification and Installation Instructions
EVCB14-TRL-TDU-180315
Page | 1
Controller Models
EVCB14NIT0S
(0 TRIACS / pressure independent)
EVCB14NIT2S
(2 TRIACS / pressure independent)
EVCB14NIT4S
(4 TRIACS / pressure independent)
EVCB14NDT4S
(4 TRIACS / pressure dependent)
EVCB14NIT0SF
(0 TRIACS / independent / feedback)
EVCB14NIT4SF
(4 TRIACS / independent / feedback)
TRL Series Thermostat
TRL24
(Thermostat 2x4)
TRLH24
(Thermostat 2x4 with Humidity)
TRLG24
(Thermostat 2x4 with CO
2
)
TRLGH24
(Thermostat 2x4 with CO
2
and Humidity)
TDU Series Thermostat
TDU10
(Grey LCD, white enclosure)
TDU40
(Black LCD, black enclosure)
TDU70
(Black LCD, white enclosure)
EVCB Series
TRL24 Series
TDU10 / TDU40 / TDU70 Series
Description
The EVCB Series is a combination controller and thermostat
with support for networked communications via the BACnet
MS/TP or Modbus protocol. The EVCB Series controller is
compatible with both TRL24 and TDU series thermostats. The
Networkable VAV Controller is designed for simple and
accurate control of any variable air volume box in a number of
zone control configurations. Its field configurable algorithms
enable versatile implementation of required control sequences.
Applications

Single duct, cooling only

Single duct cooling and/or heating

Up to 4 stage reheat and/or cool

Up to 4 On/Off heat and/or cool

Up to 4 time proportioned (TPM) heat or reheat

Up to 2 analog (0-10Vdc) reheat and/or cool

Up to 2 floating heat and/or cool

Pressure dependent or pressure independent

With or without auto changeover

Supply/exhaust (requires an additional EVC)
Features

Field configured VAV algorithms, inputs and outputs

Built-in actuator, 70 lb-in

On board differential pressure sensor (select models)

Select direction on analog outputs

Simple air balancing and commissioning via thermostat

Automatically sets operation mode to pressure dependent
or independent based on the presence of air flow

Configurable PI (Proportional-Integral) function

Independent, configurable proportional control band and
dead band per ramp

Selectable internal or external temperature sensor (10KΩ)

Activate output with CO
2
sensor from TRL/TDU or external
sensor input

Changeover by contact or external temperature sensor

Internal and external temperature sensor calibration

Optional potentiometer feedback for increased precision of
actuator position

Freeze protection

Removable, raising clamp, non-strip terminals
Operational Features

Backlit LCD with simple icon and text driven menus

Select thermostat’s default display

Network service port via on-board mini USB connector

Manual night setback or no occupancy override

Multi level lockable access menu and setpoint

Selectable Fahrenheit or Celsius scale

3-wire connection to controller and 4 push buttons
Network Communication

BACnet MS/TP or Modbus communication port

Select MAC address via DIP switch or via network

Automatic baud rate detection
BACnet MS/TP®

Automatic device instance configuration

Copy & broadcast configuration via thermostat menu or via
BACnet to other controllers

BACnet scheduler

Firmware upgradeable via BACnet

Support COV (change of value)
Modbus

Modbus @ 9600, 19200, 38400 or 57600 bps

RTU Slave, 8 bits (configurable parity and stop bits)

Connects to any Modbus master