Networkable VAV Controller
Specification and Installation Instructions
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Controller Specifications
Description
EVCB Series
Torque
70 in.lb. [8 Nm] at rated voltage
Power consumption
10 VA max
Running time through 90º
90 seconds
Power supply
22 to 26 Vac 50/60 Hz
Inputs
2 Universal inputs (Thermistor
10KΩ Type 3, digital 24Vac/dry contact, or 0-10Vdc)
2 digital inputs
Outputs
2 analog outputs (0-10 Vdc or 2-10Vdc; selectable)
Up to 4 TRIAC outputs 24 Vac, 500mA max thermal fuse in series with each TRIAC output (on/off,
pulse, or 2 floating outputs)
Real Time Clock
Real-time clock (RTC) with super capacitor backup
(
approximately 3 days
)
BACnet
BACnet
®
MS/TP @ 9600, 19200, 38400 or 76800 bps (BAS-C)
Modbus
Modbus RTU slave @ 9600, 19200, 38400 or 57600. Selectable parity and stop bit configuration:
No parity, 2 stop bit
Even parity, 1 stop bit
Odd parity, 1 stop bit
Communication connection
24 AWG twisted-shield cable (Belden 9841 or equivalent). Maximum 50ft (15m) between controller
and thermostat
Electrical connection
0.8 mm
2
[18 AWG] minimum
Operating temperature
0ºC to 50ºC [32ºF to 122ºF]
Storage temperature
-30ºC to 50ºC [-22ºF to 122ºF]
Relative Humidity
5 to 95% non condensing
Weight
1.26 kg. [2.8 lb]
The actuator performs an auto-stroke on power up. When changing the actuator adjustment screws, cycle power
to initiate the auto-stroke. Auto-stroke is not available on EVC pressure independent without feedback.
Thermostat Specifications
Description
TRL54
Sensor
Temperature
Setpoint range
10ºC to 40ºC [50ºF to 104ºF]
Control accuracy
±0.5ºC [0.9ºF] @ 22ºC [71.6ºF] typical calibrated
Display resolution
±0.1ºC [0.2ºF]
Electrical connection
3 wires to EVCB controller and 2 wires to BACnet/Modbus network | 0.8 mm
2
[18 AWG] minimum. Maximum 50ft (15m)
between controller and thermostat
Network service port
Mini USB connector
Power supply
24Vac or 24Vdc
Power consumption
1VA
Operating temperature
0ºC to 50ºC [32ºF to 122ºF]
Storage temperature
-30ºC to 50ºC [-22ºF to 122ºF]
Relative humidity
5 to 95 % non condensing
Enclosure protection
IP 30 (EN 60529)
Weight
0.1 kg. [0.22 lb]
Dimensions
A = 3.00 in (78mm)
B = 3.00 in (78mm)
C = 1.00 in (24mm)
D = 2.36 in (60mm)
Note
The thermostat functions only with the EVCB Series controller. All the inputs/outputs are located on the EVCB Series
except for the temperature sensor built-in the thermostat.
A
B
C
D
