TEC2145-4 N2 Networked Thermostat Controller with Single Proportional Output and One-Speed Fan
Control Installation Instructions
8
If there is a Relinquish Default for the setpoints, the
NAE always has an Override for either an adjusted
value or the Relinquish Default Value. You should use
Operator Override and Release Operator Override if
you want to command the setpoint and release it to
local control.
Once all the NAE commands are released, the
Override Status in the Hardware tab displays False. At
that time, the user is can change the setpoint from the
local display.
Setup and Adjustments
Thermostat Controller User Interface Keys
The TEC2145-4 Thermostat Controller user interface
consists of five keys on the front cover (Figure 6). The
function of each key is as follows:
•
MODE
key toggles among the system modes
available, as defined by selecting the appropriate
operation sequence in the Installer Configuration
Menu (Off, Heat, Cool, Auto).
•
FAN
key toggles among ON and AUTO for fan
control. ON energizes the fan all the time and
AUTO operates the fan only on a call for heating or
cooling, for both occupied and unoccupied periods.
•
OVERRIDE
key overrides the unoccupied mode to
occupied at the local user interface for the
specified TOccTime. (TOccTime is defined by
selecting the appropriate time period in the Installer
Configuration Menu.) If one of the binary inputs is
configured to operate as a remote override contact,
this
OVERRIDE
function is disabled. The
OVERRIDE
key also allows access to the Installer
Configuration Menu. See
Configuring the
TEC2145-4 Thermostat Controller
.
•
UP/DOWN
arrow keys change the configuration
parameters and activate a setpoint adjustment.
Note:
If a setpoint is overridden through the
N2 network, the setpoint appears
so
that it can be
changed via the thermostat controller, but the setpoint
is held at the overridden value. Locally entered
setpoints revert to the N2 network settings with each
change of schedule status.
Light-Emitting Diodes (LEDs)
Three System Activity LEDs are included to indicate
the status and actions of the thermostat controller:
•
The fan LED
is on when the fan is on.
•
The heat LED
is on when heating is on.
•
The cool LED
is on when cooling is on.
Backlit LCD
The TEC2145-4 Thermostat Controller includes a
2-line, 8-character backlit display. Low-level
backlighting is present during normal operation, and it
brightens when any user interface key is pressed. The
backlight returns to low level when the thermostat
controller is left unattended for 45 seconds.
Figure 6: Front Cover of Thermostat Controller
70.0ºF
Room Temp
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Five keys on the thermostat controller
make operation easy and intuitive.
Backlit, plain text
Liquid Crystal Display (LCD)
is easy to read in any condition.
Light-Emitting Diodes (LEDs)
indicate system activity.
