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Networkable VAV Controller 

Specification and Installation Instructions 

 

www.neptronic.com 

EVCB14NIT4X 

Page | 15

 

Operation Mode 

The Mode Selector Jumper (JP1) 

of the thermostat must be set to the “RUN” position (Operation Mode). Refer to Wiring on 

page 4.  

 

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

  

If enabled via the configuration menu, the thermostat displays the CO2 reading on the first line above the temperature reading. If 
CO2 display is enabled, the time will not be displayed. 

Temperature  

If enabled in the 

"Display Info"

 menu (see Settings 

– Menu (6 of 7) | 

Temp, Motor, and Settings

 on page 11), 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.  

Temperature Setpoint  

To display the setpoint, press the 

 or 

 key twice. The set point 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 (7 of 7) | 

Ramps, Network

,

 Time

and

 

Options

 on page 12), 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"

, 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. 

 

Press to toggle 

between °C and °F

Actual demand

C

Appears if setpoint 
adjustment is locked

Change setpoint 
value

C

Press once to 

display control mode

Press for 5 sec. 

to display air flow 

(if using pressure sensors)

Exits after 5 sec.

Exits after 5 sec.

Exits after 3 sec.

Press twice to 

display setpoint

Setpoint 
value

Press to change mode:

- Auto

- Off

- Cool only

- Heat only

Appears if in Night Set Back (NSB) or Occupancy 
(OCC) mode. Flashes if overridden by user.

CO2 reading in ppm

(requires TRLG24 or TRLGH24 and CO2 display 

option must be enabled in programming mode)

%RH

Room 
temperature

Alternates between room temperature for 8 sec 
and then room humidity for 2 sec. 

(requires TRLH24 or TRLGH24, and RH display 
option must be enabled in programming mode)

Содержание EVCB14NIT4X/TRL24 Series

Страница 1: ...play Network service port via on board mini USB connector Manual night set back or no occupancy override Multi level lockable access menu and setpoint Selectable Fahrenheit or Celsius scale 3 wire con...

Страница 2: ...Nm 4 Slide the mounting bracket under the actuator Ensure free movement of the slot at the base of the actuator Place the bracket pin at mid distance of the slot 5 Affix the bracket to the ductwork w...

Страница 3: ...by 90 Display resolution 1 ppm Electrical connection 3 wires to VAV controller and 2 wires to BACnet Modbus network 0 8 mm2 18 AWG minimum Network service port Mini USB connector Power supply 24Vac o...

Страница 4: ...the screw BACnet or Modbus Address DIP Switch DS1 MAC address for communication are selectable by DIP switch using binary logic If you do not change device instance in program mode it will be automati...

Страница 5: ...g DI2 Override normally cool heat DI1 OCC open close NSB open close 3 2 1 COM 24Vac input TO2 TO1 TO1 4 TO2 7 6 5 COM 24Vac input TO3 TO4 TO3 8 TO4 4 TRIAC outputs config Cool 1 or 2 heat 1 or 2 CO2 O...

Страница 6: ...tion Motor Minimum Pos Cooling 10 0 100 Motor Minimum Pos Heating 10 0 100 ClHt cool heat Control Apps Cl cool only scroll menu items APPS APPS YES confirm Confirm Control apps NO cancel The APPS repr...

Страница 7: ...ange 2000 ppm CO2 Setpnt 800 ppm Go to AI2 Go to AI2 Go to AI2 ASt Air supply temp sensor CO2 carbon dioxide StFl setpnt airflow 0 10Vdc AI2 Signal Type EtS external temp sensor OFF disabled NoHt norm...

Страница 8: ...Networkable VAV Controller Specification and Installation Instructions www neptronic com EVCB14NIT4X Page 8 TRIAC Outputs Menu 3 of 7 TO1 and TO2...

Страница 9: ...DIR direct REV reverse Go to AO1 MSV 30 MSV 32 AV 81 AV 76 AV 83 AV 82 AV 84 BV 31 BV 34 BV 35 If CO2 was selected Go to TO4 Close Percent ANLg analog 0 10Vdc CH1 cool heat 1 CO2 carbon dioxide Hr2 he...

Страница 10: ...R direct REV reverse CO2 carbon dioxide Hr2 heating ramp 2 Hr1 heating ramp 1 Cr2 cooling ramp 2 Cr1 cooling ramp 1 AO2 Ramp OFF select set value AO2 Minimum Voltage 0 0 Vdc Go to tmp AO2 Maximum Volt...

Страница 11: ...Networkable VAV Controller Specification and Installation Instructions www neptronic com EVCB14NIT4X Page 11 Settings Menu 6 of 7 Temp Motor and Settings...

Страница 12: ...nth 1 1 12 Day 1 1 31 Go to OPt scroll menu items 1001 AV 166 AV 165 1000 BV 90 AV 167 Local Time Local Date Local Time Local Date Local Date Refer to Copy Config Annnex for a complete list of message...

Страница 13: ...shows the temperature read by the external temperature sensor Adjust the offset by comparing it with a known value e g thermometer If the sensor is not connected or short circuited then the unit disp...

Страница 14: ...s 1 10 100 Maximum Cooling Airflow 1000 Min cool airflow to Kfactor Airflow Setting COOl HEAt Minimum Cooling Airflow 200 0 to max cool airflow Maximum Heating Airflow 1000 Min heat airflow to Kfactor...

Страница 15: ...ustment has been locked Setpnt Locked the lock symbol appears Humidity If enabled in the Options menu see Settings Menu 7 of 7 Ramps Network Time and Options on page 12 the thermostat displays the tem...

Страница 16: ...ers 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 set back or no occupancy mode for a predetermined period...

Страница 17: ...ype On Off On Off On Off On Off On Off On Off On Off TO3 Close Pos 40 40 40 40 40 40 40 TO3 Open Pos 0 0 0 0 0 0 0 TO4 Ramp HR2 HR2 HR2 HR1 OFF HR1 HR1 TO4 Signal Type Pulse On Off Pulse On Off On Off...

Страница 18: ...Notes...

Страница 19: ...Notes...

Страница 20: ...need to find the nearest Neptronic authorized distributor please consult www neptronic com 400 Lebeau blvd Montreal Qc H4N 1R6 Canada www neptronic com Toll free in North America 1 800 361 2308 Tel 51...

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