Networkable VAV Controller
Specification and Installation Instructions
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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
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
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
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