Operation; Auto-Changeover; Light-Activated Operation - Carrier 33CS220-LA Owner's Manual

7. The Start Time for Occupied 1 will be displayed. Use
the UP ARROW and DOWN ARROW buttons to raise
or lower the time until the desired Start Time is shown.
Press the Mode button to continue. See Fig. 6.
Fig. 6 — Start Time Display
8. The Stop Time for Occupied 1 will be displayed. Use
the UP ARROW and DOWN ARROW buttons to raise
or lower the time until the desired Stop Time is shown.
Press the Mode button.
9. The On/Off icon will be displayed. Use the UP
ARROW to turn the Occupied 1 period ON for this day.
Use the DOWN ARROW to turn the Occupied 1 period
OFF for this day.
10. Repeat Steps 2 through 9 to program the remaining sched-
ule for occupied periods 2 and 3 (if selected in Step 1).
11. The Copy command can be used to copy the previous
day's schedule if the schedules are the same. The copy
command becomes available after all the occupied
periods are programmed in a day. Use the UP ARROW
to change the copy command to YES. Use the DOWN
ARROW to change the copy command to NO. Press the
Mode button when the choice has been made. See
Fig. 7.
If NO was selected, the schedule will automatically change
to the next day and the user must enter the occupied and
unoccupied schedules for that day.
NOTE: Occupied 1 schedule heating and cooling set points
are the same for each day. Occupied 2 and 3 set points
may be set to different values for each day of the week.
If YES was selected, the schedule will be copied to the
next day. The schedule copy may be repeated until Sun-
day is reached. The Sunday schedule cannot be copied
to Monday.
Fig. 7 — Copy Command Display
12. After all the times and set points for each day have been
entered, press the Program button to finish entering the
schedule.
NOTE: The thermostat will continue to follow the sched-
ule until a new one is entered.
• If only one occupied schedule is selected, the Occu-
pied 2 and 3 schedules are skipped.
• If the start time is set later in the day than the stop
time, the program will run from midnight of that
day to the stop time and then from the start time to
midnight.
• If the same start and stop times are programmed for
an occupancy schedule, the thermostat will be in
Occupied mode for 24 hours.
• If one occupied period starts or stops within another
occupied period, the lower numbered schedule has pri-
ority. For example, if schedule Occupied 3 is running
for 24 hours and occupied schedule 2 comes on from
1 to 3 PM, the set points from Occupied 2 are in effect
from 1 to 3 PM.
OVERRIDING THE SCHEDULE — The schedule can be
overridden during operation by pressing the UP or DOWN
ARROW buttons to change the desired temperature. The ther-
mostat will use the new set point until the next scheduled
time period starts.
The Mode button selects the operating mode of the ther-
mostat. If OFF is selected, the thermostat will not enter Heat-
ing or Cooling mode. If HEAT is selected, the thermostat
will only enter Heating mode (if the room temperature is
below the heating set point). If COOL is selected, the ther-
mostat will only enter Cooling mode (if the room tempera-
ture is above the cooling set point). If AUTO is selected, the
thermostat will enter Heating or Cooling mode based on the
room temperature and the heating and cooling set points. If
PROGRAM ON is selected, the stored schedule is enabled
and the thermostat will follow the Occupied and Unoc-
cupied schedules stored in its memory.
Auto-Changeover —
to AUTO, the thermostat will provide automatic changeover
from Heating to Cooling mode and Cooling to Heating mode
when required. The thermostat will automatically switch to
maintain the desired temperature setting. The thermostat does
not need to be manually changed from heating to cooling or
cooling to heating operation.
Light-Activated Operation —
vided on the thermostat for light activation. The thermostat
must be in Program On mode for light activation to be ini-
tiated. When the sensor detects light (the space is occupied),
the thermostat will enter into Occupied 1 mode and heat or
cool according to the Occupied 1 set points. If the room is
dark, the thermostat will follow its programmed schedule.
NOTE: Light activation does not work in Holiday mode.
4

OPERATION

When the thermostat mode is set
A light sensor is pro-