TEC2103-2 Networked Multi-Stage Thermostat Installation Instructions 7
Setup and Adjustments
Thermostat Operation Overview
75.0ºF
Backlit, plain text, Liquid
Crystal Display (LCD)
is easy to read in any
condition.
Five keys on the TEC210x
make operation easy and intuitive.
Light Emitting Diodes (LEDs)
indicate system activity.
Room Temp
T
E
C
_
F
r
o
n
t
_
C
o
v
e
r
Figure 6: TEC2103-2 Thermostat Front Cover
Thermostat Interface Keys
The TEC2103-2 thermostat interface consists of
five keys on the front cover and one configuration
key (Figure 7) that are accessed by removing the
front cover. The functions of the keys are as
follows. Use the:
• YES/SCROLL key to:
− confirm menu selections, and to advance to
the next menu item
− stop the Status Display Menu from scrolling
and to manually scroll to the next parameter
on the menu. When left unattended for
45 seconds, the display resumes scrolling.
• NO key when you do not desire a parameter
change, and to advance to the next menu item
• MENU key to access the Main User Menu or exit
the menu
• UP/DOWN arrow keys to:
− adjust values
− activate a Temporary Setpoint
Configuration
Key
T600_TEC_Config_Key
Figure 7: Configuration Key Location
Backlit Liquid Crystal Display (LCD)
The TEC2103-2 thermostat uses a two-line,
eight-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 the lower level when the thermostat is left
unattended for 45 seconds.
Light-Emitting Diodes (LEDs)
Three LEDs are used to indicate the status of the fan,
call for heat, or call for cooling. When:
• the fan is on, the FAN LED lights up
• heating is on, the HEAT LED lights up
• cooling is on, the COOL LED lights up
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