Carrier AQUAZONE 50QE900 - Manual (Page 4)

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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.
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
schedule 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 peri-
ods 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 occu-
pied 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.
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 Occupied
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.
OPERATION
The Mode button selects the operating mode of the thermo-
stat. If OFF is selected, the thermostat will not enter Heating or
Cooling mode. If HEAT is selected, the thermostat will only
enter Heating mode (if the room temperature is below the heat-
ing set point). If COOL is selected, the thermostat will only en-
ter Cooling mode (if the room temperature is above the cooling
set point). If AUTO is selected, the thermostat will enter Heat-
ing 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 Unoccupied schedules stored in its memory.
Auto-Changeover — When the thermostat mode is set
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 — A light sensor is pro-
vided on the thermostat for light activation. The thermostat
must be in Program On mode for light activation to be initiated.
When the sensor detects light (the space is occupied), the ther-
mostat will enter into Occupied 1 mode and heat or cool ac-
cording 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.
Two-Stage Operation — The second stage of heat or
cool is turned on when the first stage has been on for a mini-
mum of 2 minutes and the temperature differential from the set
point is equal to or greater than the set point plus the deadband
plus 2 degrees.
Clock Backup — In the event of a power loss, the ther-
mostat will keep time for a minimum of 48 hours without ex-
ternal power or batteries.
Fan Operation — If Fan On is selected, the fan will run
continuously during occupied schedule (except when Mode is
switched to OFF). The fan will be off during unoccupied
schedule except during heating or cooling operation.
If Fan On is not selected, the fan will only operate during
heating or cooling operation.
Fig. 6 — Start Time Display
Fig. 7 — Copy Command Display