Neptronic EVCB14NDT4S, Specification And Installation Instructions

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Networkable VAV Controller
Specification and Installation Instructions
www.neptronic.com EVCB Standard Page | 17
Power Up
Upon power up, the LCD illuminates and all segments appear for 2 seconds. The thermostat then displays its current version of the
thermostat for 2 seconds followed by the current version of the controller for 2 seconds. Pressing any key on the thermostat
illuminates the LCD for 4 seconds.
CO
2
(Thermostats with CO
2
Sensors)
If enabled via the configuration menu, the thermostat displays the CO
2
reading on the first line above the temperature reading. If
CO
2
display is enabled, the time will not be displayed.
Temperature Display and Setpoint
If enabled in the "Display Info" menu (see Settings – Menu (5 of 6) | Temp, Motor, Settings and Ramps on page 12), the thermostat
displays the temperature reading. If the sensor is disconnected or short circuited, then the unit displays the sensor's limit. To toggle
the temperature scale between ºC and ºF, press the button. To display the setpoint, press the or key twice. The setpoint
appears for 5 seconds. To adjust the setpoint, press the arrow keys while the temperature is displayed. If the setpoint adjustment
has been locked
“Setpnt Locked”,
the lock symbol appears.
Humidity
If enabled in the "Options" menu (see Settings – Menu (6 of 6) | Network, Time and Options on page 13), the thermostat displays
the temperature reading for 8 seconds and then displays the humidity reading for 2 seconds. If the sensor is disconnected or short
circuited, then the unit displays the sensor's limit.
Airflow and Air Supply Temperature
Press and hold the [ / ] button for 5 seconds and use the arrow keys to view the
“airflow”
,
“airflow Setpnt"
, “
actual
damper pos percent”
and
“air Supply Temp”.
After 5 seconds without any action, the thermostat returns to operation mode. The air
supply temperature appears only if analog input AI1 or AI2 are configured with the AST option. Not available on the following
pressure dependent model
EVCB14NDT4S.
Control Mode
To access the Control Mode, press the [ / ] button. The Control Mode appears for 5 seconds. Press the [ / ] button
to scroll through the following control modes. These options can vary depending on the options selected in "Temp Control Mode"
and "Enable OnOff Control Mode".

Auto (Automatic Cooling or Heating)

OFF (if it is not disabled in Programming Mode)

Cooling only (on, with cooling symbol)

Heating only (on, with heating symbol)
Night Setback (NSB) or Occupancy Mode
This function is only available if you set DI1 to nSb (Night setback contact) or Occ (occupancy mode). If the DI1 contact is
triggered, the thermostat enters NSB or No Occupancy Mode (the symbol appears) and uses the NSB or OCC heating and
cooling setpoints.
If not locked, you can override the night setback or no occupancy mode for a predetermined period by pressing any of the 4
buttons. During the override period the
symbol will flash. If the
symbol
does not flash, the override period is finished or the night
setback or no occupancy override has been locked in programming mode.
Set Time and Date
1. Ensure that JP1 on the thermostat is set to run.
2. Press and hold the
button for 5 seconds
3. Use the arrow keys to set the desired value. Press the [ / ] button to save and got to the next step. Press the
button to go to the previous step without saving.
= select / set value
Hours
12
(0-23 or 1-12 am/pm)
Minutes
00
(00-59)
Year
15
(15-99)
Set Time Display format
24
(24-hour format)
12
(AM/PM format)
Month
1
(1-12)
Day
1
(1-31)
Exits and returns to
RUN mode.
Local Time Local Date Local Time
Local Date Local Date
*** To save any changes, press on TRL and on TDU ***
*** To the previous step without saving, press
on TRL and TDU ***