White Rodgers COMFORT-SET 90 SERIES User manual

INTRODUCTION
Thank you for purchasing
your new Comfort-Set®90
Series thermostat. Your new
White-Rodgers Thermostat
uses solid state micro-
computer technology to
provide precise time/tem-
perature control. This ther-
mostat offers the flexibility
to design heating and cooling
programs that fit your needs.
Adaptable to most 24 volt
light commercial forced air,
multistage or heat pump
systems with electric or
fossil fuel auxiliary.
You will find information
about thermostat buttons and
display in the component
section beginning on page 2.
Instructions for optional
Introduction Orientation Configuration Programming Features Index
thermostat configuration
begin on page 4. Program-
ming information begins on
page 7. Descriptions of the
thermostat’s features begin
on page 11.
We have also added thumb
tabs to help you find sections
of the manual.

2
ORIENTATION
THE THERMOSTAT BUTTONS
See inside front cover for illustration
showing button locations.
1(Blue arrow) Lowers temperature
setting (45°F or 7°C minimum)
2(Red arrow) Raises temperature
setting (99°F or 37°C maximum)
3The multi-color indicator glows:
green for 1st stage, yellow for 2nd stage,
red for emergency heat and flashing
red for malfunction condition in
system.
4
This button (on top of the cover)
lights the display.
5
Used to initiate or review thermo-
stat programming or advance to next
program period in programming mode.
6
Used with TIME
FWD
/TIME
BACK
to set the clock.
7
Used to adjust the time backward,
or to select the previous menu item.
8
Used to adjust the time forward, or
to select the next menu item.
9
Used with TIME
FWD
/TIME
BACK
to set the current day.
10
Used to advance operation to the
next program period or advance to the
next day in programming mode.
11
Used to manually override
programming to hold at a selected
temperature.
12
Used to enter and configure the
VACATION mode.
13
Selects fan operation (see The
Display
21
). This button is also used
to program the fan to run continuously
during a program period.
14 Used to set the filter change-out
time, or to reset the filter change timer.
15 Sets the system mode (HEATing,
EMERgency, OFF, COOLing, or
AUTOmatic changeover).
16 Used to adjust the clock one hour
forward or back.
17 Used to start or return to program
operation.

3
FAN AUTOHRS
CHECK BATTERY STAT SYSTEM
°F
AM
MON
PRG
FAN ON
HEATHEAT
HRS
CHECK BATTERY
°F
AM
MON WED THU FRI SAT SUNTUEWED THU FRI SAT SUNTUE
18 18
19 20 21 21
22
25
2324
Figure 1. The Display
THE DISPLAY
18 Displays system mode (HEAT,
EMER, OFF, COOL, AUTO,
HOLD, or VACA). During program-
ming displays the time period
(OCCU, UNOC) being programmed..
In the configuration menu, the menu
item name is shown, one word at a
time (PRGM MODE, EMR, COOL
FAN DELA OFF, etc.).
19
CHECK STAT appears when the
thermostat detects certain problems
within itself. CHECK SYSTEM
appears when the thermostat detects
certain problems in heating or cooling
the system.
20
Indicates the length of time
remaining in a temporary hold
condition. Also indicates the length of
time remaining in VACATION mode.
21 Displays FAN ON when the fan is
operating continuously. Displays FAN
AUTO when the fan cycles with the
heating or cooling system. Displays
PRG FAN ON when fan is pro-
grammed to be on during a period.
22 Displays the setpoint temperature.
23
Alternately displays room
temperature and time of day.
24 Shows the current day of the week.
When programming, shows the day(s)
being programmed.
25 The word HEAT or COOL will
appear above or below the setpoint if
area 18 is needed to display other
information.
Orientation

4
The configuration menus allow you to
set certain thermostat operating
characteristics to your system or
personal requirements.
To enter the User Configuration menu,
press PROGRAM
RUN
to make sure
the thermostat is in the run program
mode, then press TIME
FWD
and
TIME
BACK
at the same time. The
display will show the first item in the
configuration menu.
The following charts (pages 5 & 6)
describe each item on the menus. Press
TIME
FWD
to move forward to the
next item in the menu or TIME
BACK
to move backward to the previous
item. Set these according to your
personal preference using or
. To enter the Keypad Lock
menu, while in the User Menu, press
and hold TIME
FWD
and TIME
BACK
for at least two seconds.
To exit either menu and return to
normal operation, press PROGRAM
RUN
. To re-enter to the User menu at
any time press PROGRAM
RUN
,
then press TIME
FWD
and TIME
BACK
at the same time. While in the
menus, if you do not press any buttons
for two minutes, the thermostat will
revert to normal operation.
CONFIGURATION

5
1
Step Press Button(s) Displayed Press or to select: COMMENTS Ref
(Factory Default) Page
0 °F
(room temperature) 5 LO to 5 HI
2EMR
(ON) OFF or ON L
Adjusts temperature display higher or lower.
3(°F) °C
Adjusts temperature display to °F or °C.
4SET FAN
(0) 0 - 6 HRS
5BEEP
(ON) OFF
6HEAT FAST
(OFF) ON
7COOL FAST
(OFF) ON
8TEMP OUT
(OFF) ON
Enables outdoor temperature sensor. Requires
optional remote sensor connected to terminal OT
and remote thermistor probe. Also displays outdoor
temperature if active.
Selects EMR option ON or OFF or L ON.
Set Fan (one shot) option. Set the duration of a
temporary fan option.
Turns keypad beeper ON or OFF.
OFF delays starting second stage for economy.
ON starts second stage earlier with user intervention.
OFF delays starting second stage for economy.
ON starts second stage earlier with user intervention.
TIME
and TIME
FWD
BACK
TIME
FWD
TIME
FWD
TIME
FWD
TIME
FWD
TIME
FWD
TIME
FWD
TIME
FWD
User Menu
Configuration
11
11
12
12
12
12
12
12

6
9FONE (Icon)
(OFF) ON
10 COMP RUN TIME
(00) (Compressor run time in hours)
12
Returns to normal operation.
11 AUX RUN TIME
(00) (AUXILIARY run time in hours)
Telephone RUN program feature. Requires optional
X10 system.
Shows accumulated time compressor has run.
To reset to 00, press and .
Shows accumulated time AUXILIARY has run.
To reset to 00, press and .
PROGRAM
RUN
TIME
FWD
TIME
FWD
TIME
FWD
1
Step Press Button(s) Displayed Press or to select: COMMENTS Ref
(Factory Default) Page
PART LOCK
(OFF) ON
2LOCK
(OFF) ON
Partial Keypad lockout OFF or ON.
3
Returns to normal operation.
Total Keypad lockout OFF or ON.
PROGRAM RUN
TIME
and TIME
(hold for two
seconds)
FWD
BACK
TIME FWD
Keypad Lockout Menu (access from User Menu)
User Menu (Continued)
12
13
13
13
13

7
PROGRAMMING
MANUAL OPERATION
Your Comfort-Set®90 Series thermo-
stat can be used to control temperature
manually (without programming). For
manual operation, press
SYSTEM
to
select HEAT or COOL, then press
PROGRAM
HOLD
. Use or
to set the temperature as
desired.
PROGRAMMED OPERATION
Planning Your Program
The sample schedule (page 9) shows
the factory installed programs for
heating and cooling. The heating and
cooling programs are separate, and
must be programmed individually. To
use the factory program, set the clock
and press PROGRAM
RUN
with the
thermostat
SYSTEM
set to Heat, Cool,
or Auto.
Fill out the blank schedule (page 10)
with the time and temperatures you
want in your program. Fill in every
space for your program.
The same temperature can be repeated
more than once if you do not want the
temperature to change over several
time periods.
Entering Your Program
To Set the Clock:
1. Press PROGRAM
RUN
.
2. Press SET
TIME
. The display will
show the hour. Use TIME
FWD
or
TIME
BACK
to set to the current hour
and AM/PM designation.
3. Press SET
TIME
again. The
display will show minutes. Use TIME
FWD
or TIME
BACK
to set to the
current minutes.
4. Press PROGRAM
RUN
.
To Set the Day:
5. Press SET
DAY
. The display will
indicate a day of the week. Use TIME
FWD
or TIME
BACK
to set to the
current day of the week.
6. Press PROGRAM
RUN
.
To Set the Program:
7. Press
SYSTEM
to select HEAT (for
heating program) or COOL (for
cooling program).
8. Press PROGRAM
VIEW
one time.
The display will show OCCU and the
settings for time and temperature. The
display will also show MON for
Monday.
9. If you program Monday the first
time you press PROGRAM
VIEW
it
will be copied to the rest of the week.
To program the other days of the week
press
ADV.
/DAY until you reach the
Programming

8
day you wish to change and follow
Steps 10, 11 & 12. You can also copy
the program from one day to another.
To copy, press
HOLD
/COPY. The
display will show COPY, and all the
other days of week will be flashing.
Press
HOLD
/COPY again to copy the
day into the rest of the week or press
TIME
FWD
or TIME
BACK
until
you reach the day you want to copy to
and press
HOLD
/COPY.
10.Press TIME
FWD
or TIME
BACK
to set the time on the display as
selected in your HEATING or
COOLING SCHEDULE. Be sure to
check the AM or PM on the display.
11.Press the red or blue
key to adjust the temperature to match
your schedule. If you want the fan ON
continuously during this period, press
FAN
.
12.Press PROGRAM
VIEW
one time.
OCCU on the display will change to
UNOC. Repeat steps 10 and 11 to
enter time and temperature for this
period.
13.Press PROGRAM
ADV.
to change
MON to TUE and show the OCCU
time and temperature settings. Repeat
steps 10 through 12 to enter times and
temperatures for this day.
14.Continue through the entire
schedule, entering time and tempera-
ture for each day and period. When
you are satisfied that your program
matches your schedule, press PRO-
GRAM
RUN
. Programming is now
complete for this mode and your
program is running.
15.To program the other mode, repeat
the procedure from step 7.