Operating Your Thermostat; Programming - White Rodgers 90 Series Installation And Operating Instructions Manual

OPERATING YOUR THERMOSTAT

Choose the Fan Setting (Auto or On or Prog)
Fan Auto is the most commonly selected setting and runs
the fan only when the heating or cooling system is on.
Fan On selection runs the fan continuously for increased air
circulation or to allow additional air cleaning.
Fan Prog will cycle the fan for -10 minutes on and 20
minutes off – if the thermostat has not called for heat or cool
during the past 60 minutes.
Choose the System Setting
(Cool, Off, Heat, Auto)
Press the SYSTEM button to select:
Heat: Thermostat controls only the heating system.
Off: Heating and Cooling systems are off.
Cool: Thermostat controls only the cooling system.
Auto: Auto Changeover is used in areas where both heating
and cooling may be required on the same day. AUTO allows
the thermostat to automatically select heating or cooling
depending on the indoor temperature and the selected heat
and cool temperatures. When using AUTO, be sure to set the
Cooling temperatures more than 1° Fahrenheit higher than
the heating temperature.
Manual Operation for
Non-Programmable Thermostats
Press the SYSTEM button to select Heat or Cool and use
the or buttons to adjust the temperature to your
desired setting. After selecting your desired settings you can
also press the SYSTEM button to select AUTO to allow
the thermostat to automatically change between Heat and
Cool.

PROGRAMMING

Set Current Time and Day
1) Press Menu key to enter installer menu. Then press
Set Time once to indicate hour & A or P designation in
clock display.
2) Press and hold either the
reach the correct hour and A or P designation.
3) Press Set Time again to display minutes only in clock
display.
4) Press and hold either the
reach the correct minutes.
5) Press Set Time once again to display year.
6) Press and hold either the
reach the correct year.
7) Press Set Time once again to display month.
8) Press and hold either the
reach the correct month.
9) Press Set Time once again to display date of the month
along with day of the week at top row (which is auto-
matic).
10) Press and hold either the
reach the correct day of the month and day of the week
is automatically calculated and displayed at the top row.
11) Press Run Schedule once; now the display will show the
correct time and room temperature.
8
or touch key until you
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IMPORTANT!
Manual Operation (Bypassing the Program)
Programmable Thermostats
Press or and the HOLD button and adjust the tempera-
ture wherever you like. This will override the program. The
HOLD feature bypasses the program and allows you to
adjust the temperature manually, as needed. Whatever
temperature you set in HOLD will be maintained 24 hours a
day, until you manually change the temperature or press Run
Schedule to cancel HOLD and resume the programmed
schedule.
Program Override (Temporary Override)
Press or buttons to adjust the temperature. This will
override the temperature setting for a (default) four hour
override period. The override period can be shortened by
pressing or lengthened by pressing
period can range from 15 minutes to 7 days.
Example: If you turn up the heat during the morning pro-
gram, it will be automatically lowered later, when the tempo-
rary hold period ends. To cancel the temporary setting at any
time and return to the program, press Run Schedule.
If the SYSTEM button is pressed to select AUTO the
thermostat will change to Heat or Cool, whichever ran last. If
it switches to heat but you want cool, or it changes to cool
but you want heat, press both
neously to change to the other mode.
Automatic Daylight Saving Calculation
The Real Time Clock will adjust automatically for daylight
savings time, in the following manner until 2007:
Increment one hour at 2 AM on the first Sunday of April and
decrement one hour at 2 AM of the last Sunday of October
every year.
From March 2007, the adjustment will occur every year as
follows: Increment one hour at 2 AM on the second Sunday
of March and decrement one hour at 2 AM on the first
Sunday of November.
The daylight saving feature can be enabled or disabled in
installer configuration mode.
After entering installer configuration mode, momentarily
press or touch key until the display indicates dS (in
actual temperature digits) and on (default – in clock digits).
and keys will toggle display and operation from on to
OFF .
Programming Tip: Copy Button
You may copy any daily program to another day or group of
days by pressing the Copy button. In 7 day programming
mode when the Copy button is pressed, the other 6 days of
the week will flash. To copy the current program into the
remaining six days, simply press the Copy button again. To
copy the current program to another day of the week, press
Advance Day to select the day and press Copy to paste the
program. In 5/1/1 day programming mode the copy function
is similar. The weekday (Mon-Fri) program can be copied to
Sat and Sun (both flashing) or use Advance Day to choose
Sat or Sun and press the Copy button to paste the program.
. Program Override
or buttons simulta-