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TB7220 COMMERCIALPRO™ PROGRAMMABLE THERMOSTAT
63-2635—03 18
NOTES:
— If batteries are not replaced when the Low Battery
warning is flashing, the LO batt screen displays
continuously and the thermostat stops operating
until batteries are replaced.
— The thermostat has a low battery indicator.
However, it is recommended that the batteries be
replaced once each year. Do this to prevent
leakage and prevent the thermostat and HVAC
system from shutting down due to lack of
thermostat battery power.
Fig. 38. Low battery signal.
Replace the batteries as follows:
1. Remove the thermostat from the base by pulling it
straight out. (See Fig. 39.)
2. Install two new AA alkaline batteries with proper polar-
ization.
NOTES:
— Always use AA alkaline batteries.
— All programming (Schedule, Date and Time)
information is retained during battery replacement.
3. Place thermostat back on subbase by aligning terminal
screw blocks with the pins on the back of the thermostat.
(See Fig. 40.)
4. Push the thermostat straight onto the base.
Fig. 39. Removing thermostat from subbase.
Fig. 40. Placing thermostat back onto subbase.
Reading Remote Indoor Temperature
If connected to an installed remote indoor temperature sensor,
the thermostat displays the indoor temperature from the
remote sensor(s).
NOTE: If connected to an installed remote indoor temperature
sensor, the thermostat internal sensor is not used.
ONE REMOTE INDOOR SENSOR INSTALLED
If one remote indoor temperature sensor is used, the screen
showing the Inside temperature reading displays the
temperature at the indoor remote sensor location.
MULTIPLE REMOTE INDOOR SENSORS INSTALLED
If more than one remote indoor sensor is used, the screen
showing the Inside temperature reading displays the average
of all the remote indoor sensors.
Reading Outdoor Temperature
If connected to an outdoor sensor, the thermostat can display
the Outside temperature.
VIEW OUTSIDE TEMPERATURE
View the outdoor temperature by pressing MORE until the
outside temperature shows where the Indoor temperature was
displayed. The word Outdoor will be displayed on the LCD.
Screen Locked
Portions of the touch screen interface can be fully or partially
locked. See the Advanced Settings section for information to
use these features. When the thermostat displays LOCKED,
the buttons are either fully or partially locked.
Fully Locked Screen
In this mode, the entire interface is locked and not functional.
To unlock screen, see the Advanced Settings section. The
screen continuously displays SCREEN LOCKED.
M22322
WALL
M23024
WALLPLATE
M22299
TERMINAL SCREW BLOCK
PINS ON
BACK OF
THERMOSTAT