White Rodgers 1F97-71 User manual

OPERATION GUIDE
7-Day Programmable Electronic
Digital Thermostat
1F97-71
Operator: Save this booklet for future use!
WHITE-RODGERS

2
About Your New Thermostat . . .
Your new White-Rodgers Digital Thermostat uses the technology of a solid-state microcomputer to
provideprecisetime/temperaturecontrol. Thisthermostatoffersyoutheflexibilitytodesignheatingand
cooling programs that fit your needs.
Please read this manual thoroughly before operating or programming your thermostat. If you have
questions, write to us at the address shown on the back cover of this manual.

3
ENTERING YOUR PROGRAM
Set Current Time and Day
Select Heating and Cooling Temperatures
Program Heating/Cooling Times and
Heating Temperatures
Program Cooling Temperatures
Using the HOLD/COPY Button
CHECK YOUR PROGRAMMING
QUESTIONS AND ANSWERS..................... 33
YOUR NEW THERMOSTAT'S
FEATURES................................................ 4
OPERATING YOUR THERMOSTAT ............. 5
PARTS OF THE THERMOSTAT
The Back Of the Thermostat Body
The Display
The Thermostat Buttons
OPERATING FEATURES
PROGRAMMING YOUR
THERMOSTAT ........................................ 18
PLANNING FOR YOUR NEEDS
In This Guide . . .
Operator: Save this
booklet for future use!

4
• Seven independent day programming
• Simultaneous heat and cool program storage
• Four separate time/temperature settings per
24-hour period
• Computed Energy Management Recovery
(EMR)
• Automatic changeover (operator-selectable)
• Armchair programming capability
• Backlit LCD displays continuous set point,
time, and room temperature
• 1.5volt"AA"Energizer®alkalinebatterybackup
• Preprogrammed temperature control
YOUR NEW THERMOSTAT’S FEATURES
• Adjustable cycle times
• Compressor short cycle protection
• Programmable blower control
• Blower delay in the cooling cycle
• Audio and visual prompting during operation
• Two hour temperature override
• Manual program override (HOLD tempera-
ture)
•°F/°C convertibility
• Keypad lockout (operator-selectable)
• Temperature range 40°to 99°F
• Compatible with Remote Sensor (installer-
selectable)

5
OPERATING YOUR THERMOSTAT
Before you begin programming your thermostat,
youshouldbefamiliarwithitsfeaturesandwiththe
display and the location and operation of the ther-
mostatbuttons. Theinformationinthissectionwill
helpyoubecomefamiliarwithyournewthermostat
so that you can easily program it.
Yourthermostatconsistsoftwoparts: thethermo-
stat body and the subbase.
Remove power from the system at the
circuit breaker/fuse box before removing
or attaching the thermostat body. Equip-
mentdamageand/orpersonalinjurycould
occur.
The subbase is attached to the wall, but you can
remove the thermostat body for easy program-
ming. To remove the thermostat body from the
subbase, grasp the thermostat body and gently
pull it straight out from the subbase. To attach the
thermostatbody, lineupthe threeterminalpinson
the lower section of the thermostat back with the
matchingconnectoronthesubbase. Insertthese,
thengentlypivotthethermostatbodyuptoconnect
the six pin connectors on the upper portion of the
thermostat back. Gently push until the snap con-
nectors engage. DO NOT FORCE OR PRY THE
THERMOSTAT, as this may damage the unit.
CAUTION
!

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PARTS OF THE THERMOSTAT
The Back of The Thermostat Body
Turn the thermostat body over. On the back are
the 3 "AA" Energizer®alkaline batteries and the
two option switch groups (A and B).
1. The"AA"Energizer®alkalinebatteriesprovide
power to the thermostat when the 24vAC
power is interrupted (for example, when you
remove the thermostat from the wall for pro-
gramming). Fresh batteries will maintain the
stored program for approximately a year. If
power loss is long enough for the program to
be lost, the thermostat will automatically re-
turn to the factory programmed temperatures
(64°F heating and 82°F cooling) when power
is restored. You must reprogram the thermo-
stat if this happens.
IfthewordBATTERYisflashinginthedisplay
window, the batteries are low and should be
replaced with fresh "AA" Energizer® alkaline
batteries.
Before removing thermostat from the wall
to replace the batteries, remove 24vAC
power from the thermostat at the breaker/
fuse box.
2. You may adjust the option switches for EMR,
keypadlockout,andautomaticchangeoverfrom
heat to cool (see OPERATING FEATURES).
CAUTION
!

7
Other than and , the buttons are lo-
cated behind the thermostat door. To open the
door, use your fingernail in the indentation at the
topofthedoortopullitoutfromthetop,thenswing
it down on its hinges.
Onthefollowingpagestherearebriefdescriptions
of the display and the thermostat buttons.
BACK OF THERMOSTAT BODY
Option Switches 3-pin Connector
6-pin Connector Batteries
W14 W22
(Group A)
(Group B)

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The word BATTERY flashes on the display
whenthe"AA"alkalinebatteriesareweakand
should be replaced. The word BATTERY is
displayed continuously (non-flashing) when
thermostat is running on battery power only.
FAN ON is displayed when the blower is
operating continuously. FAN AUTO is dis-
played during automatic fan operation (when
the blower cycles with the heating or cooling
system).
The Display
Continuously displays system mode (HEAT,
OFF, COOL, AUTO, HOLD). During pro-
gramming, the day of the week is displayed
(MON, TUE, WED, etc.).
Alternately displays room temperature (Fde-
notes degrees Fahrenheit and Cdenotes de-
greesCelsius)andtimeofday(AdenotesAM
time and Pdenotes PM time).
Displays the setpoint temperature.
In VIEW TEMP mode, A, B, C, and Dare the
1st, 2nd, 3rd, and 4th heating or cooling tem-
peratures available for programming.
1
5
6
2
3
4

9
1 2 3
466
AB
2
3
4
FAN AUTO FAN ON
FAN AUTO
5
BATTERY
SYSTEM
SWITCH
FAN
SWITCH
HEAT-OFF-COOL-AUTO
TIME
FWD
TIME
BACK
SET
CLOCK
ADV
DAY
VIEW
PRGM
VIEW
TEMP
HOLD
COPY
RUN
PRGM
ON-AUTO
WHITE-RODGERS DIGITAL COMFORT SET II

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Usedtoinitiateorreviewthermostatprogram-
ming.
Used to select heating and cooling tempera-
tures to be programmed.
Used to manually override programming to
holdataselectedtemperature(whenHOLDis
displayed). Also used to copy one day's
programming into another (when COPY is
displayed).
Used to start program operation after pro-
gramming. Also used to return thermostat to
programoperationafterbeinginHOLDmode.
(Redarrow)Raisestemperaturesetting(99°F
or 37°C maximum).
(Bluearrow)Lowerstemperaturesetting(40°F
or 4°C minimum).
The red indicator light glows whenever heat-
ing, cooling, or fan are in operation.
The Thermostat Buttons
Sets the system mode (HEATing, OFF,
COOLing, or AUTOmatic changeover).
Selects fan operation (see #6, above). This
button is also used to program the fan to run
continuously during a program period.
Runs display forward or backward through
time, day, or anticipation settings during pro-
gramming.
Used with
TIME
FWD
and
TIME
BACK
to set current time
and day of the week.
Usedduringprogrammingtosetthedayofthe
week to be programmed. Also used in con-
junction with the
SET
CLOCK
button to enter antici-
pation setting mode.
7
12
13
8
9
10
11
14
15
16
17
18

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10 11 12 13 14 15
16
17 18
9
7
8
FAN AUTO
SYSTEM
SWITCH
FAN
SWITCH
HEAT-OFF-COOL-AUTO
TIME
FWD
TIME
BACK
SET
CLOCK
ADV
DAY
VIEW
PRGM
VIEW
TEMP
HOLD
COPY
RUN
PRGM
ON-AUTO
WHITE-RODGERS DIGITAL COMFORT SET II

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OPERATING FEATURES
Now that you are familiar with the thermostat
displayandbuttons,readthefollowinginformation
tolearnaboutthemanyfeaturesofthethermostat.
•COMPUTED ENERGY MANAGEMENT RE-
COVERY (EMR) — The thermostat’s micro-
computercanbesettoautomaticallycalculate
the time it will take to change the temperature
tothenextprogramsetting. Thenthethermo-
statwillactivatetheheatingor coolingsystem
tochange the temperature so that thedesired
temperatureisreachedatthebeginningofthe
next program period. As an example of this
feature, assume that you have programmed
your thermostat to provide an overnight heat-
ing temperature of 62°F, and that during the
next program period, beginning at 6:00 AM,
youhaveprogrammedatemperatureof70°F.
The thermostat will automatically activate the
heating system at 5:00 AM, so that the pro-
grammed 70°F temperature is reached by
about 6:00 AM.
This feature is controlled by Group B option
switch #3. To enable the EMR function, first
you must move option switch #3 (located on
the back of the thermostat body) to the OFF
position,ifithasnotalreadybeendone. Todo
this, turn off 24v AC power to the thermostat.
Then remove the thermostat body from the
wall. Check the position of switch #3 (the last
switchontheright). IfitisOFF (down),simply
put the thermostat back on the wall and re-
store 24v AC power. If the switch is ON (up),
remove the battery, then use a pencil or small
screwdriver to move the switch to the OFF
position(see figure below). Leave the battery
outofthethermostatforatleasttwominutes,
to allow the thermostat to reset itself. See

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AUTOMATIC CHANGEOVER to determine
proper positions of Group B option switches
#1 and #2.
EMR Switch Positions
Switch #1 (see AUTOMATIC CHANGEOVER)
Switch #2 (see AUTOMATIC CHANGEOVER)
Switch #3 OFF
•AUTOMATIC CHANGEOVER — If you have
a heating/cooling system, you can set the
thermostattoautomaticallyswitchthesystem
from heating to cooling as needed. (If you
have a heating only system, Group B option
switch#1shouldbeOFFandoptionswitch#2
should be ON.) To enable automatic
changeover, you must move Group B option
switch #1 to the ON position and switch #2 to
theOFFposition. Turnoff24vACpowertothe
thermostat. Thenremovethethermostatbody
from the wall. Check the position of Group B
optionswitches#1and#2(thefirsttwoswitches
ontheleft). Iftheyareinthecorrectpositions,
simplyputthethermostatbackonthewalland
restore 24v AC power. If the switches are not
correctly positioned, remove the battery, then
use a pencil or small screwdriver to move the
switchestothecorrectpositions(seefigureon
next page). Leave the battery out of the
thermostat for at least two minutes, to allow
the thermostat to reset itself. Replace the
battery, reprogram the thermostat, if neces-
sary, put the thermostat back on the wall, and
restore 24v AC power. To set the thermostat
forautomatic changeover after programming,
press
SYSTEM
SWITCH
to set the thermostat to AUTO
ON
123
Group B
Option
Switches

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(the setpoint temperature display is blank in
the AUTO mode). The system will now auto-
maticallyswitchbetweenheatingandcooling,
depending on the actual room temperature.
Auto Changeover Switch Positions
Switch #1 ON
Switch #2 OFF
Switch #3 (see Energy Management Recovery)
In the AUTO mode, the thermostat will not allow
the temperature separation between the highest
heat setting and the lowest cool setting to be less
than 1°F. For example, if the highest heat setting
is 75°F, the lowest cool setting cannot be below
77°F (see diagram at right).
•TWOHOURTEMPERATUREOVERRIDE—
Press or until the display shows
thetemperatureyouwant. Thethermostatwill
override current programming and keep the
roomtemperatureattheselectedtemperature
fortwohours. Aftertwohours,thethermostat
will automatically revert to the program.
•HOLD TEMPERATURE — The thermostat
can hold any temperature within its range for
an indefinite period, without reverting to the
program. Press
HOLD
COPY
. HOLD will be dis-
played. Then choose the desired hold tem-
perature by pressing or . The
thermostat will hold the room temperature at
ON
123
Group B
Option
Switches
79
78
77
76
75
74
73
COOLING TEMPERATURES
HEATING TEMPERATURES
DEAD BAND 1°F
NOTE

15
the selected setting until you press
RUN
PRGM
to
startprogram operation again. This feature is
ideal for energy conservation when the build-
ing is unoccupied for an extended period of
time.
•°F/°C CONVERTIBILITY — Press
TIME
FWD
and
TIME
BACK
at the same time until the temperature
displayisin°C(Celsius). Todisplay°F,repeat
the process.
•ADJUSTABLE HEATING AND COOLING
CYCLE TIMES (ANTICIPATION) — If the
heating/cooling system is turning on and off
too often (short cycles) or not often enough
(long cycles), you may want to adjust the
anticipation setting.
A cooling anticipation setting of less than
10 may cause decreased compressor life.
To adjust heat anticipation, press
SET
CLOCK
and
ADV
DAY
at the same time. The display will show
HEAT 5 (this is the factory preprogrammed
heating anticipation setting). You may select
any anticipation setting from 4 to 40 (note
that for hydronic systems, a minimum an-
ticipation setting of 15 is recommended).
Whenever adjusting anticipation, increase or
decrease the displayed number by only one
or two digits, then let the system run for a
while to see if the adjustment is sufficient. If
the heat cycles are too short, press
TIME
FWD
to
increasethecycletime. Iftheheatcyclesare
CAUTION
!

16
too long, press
TIME
BACK
to decrease the cycle
time. Tosetcoolinganticipation,press
SET
CLOCK
and
ADV
DAY
atthesametimeagain. Thedisplay
will show COOL 14 (factory preprogrammed
cooling anticipation). Use the
TIME
FWD
and
TIME
BACK
buttonsto adjust anticipation. Press
RUN
PRGM
to
return to your program.
•LOW BATTERY INDICATOR — The three
"AA" alkaline batteries will maintain thermo-
stat programming for approximately one year
if power to the thermostat fails. The word
BATTERY will flash on the display if the "AA"
alkaline batteries are low and should be re-
placed. The thermostat will also make a
beeping sound every five minutes when bat-
teries need replacing. To override the beep-
ing, press any button on the keypad. The
beepingwillstopfor15hours,thenstartagain.
You may again stop the beeping by pressing
any button on the keypad. After turning the
beep off three times, the thermostat will quit
beeping. However,youshouldalwayschange
the batteries as soon as possible to ensure
that programming will not be lost in the event
of a power outage. You should also change
the batteries at least once a year.
Fresh batteries must always be installed
for millivolt systems. The heating system
willnotoperateifbatteriesarenotinstalled
or if battery power is low.
The word BATTERY will be displayed continu-
ously (non-flashing) when 24v AC power is not
being supplied to the thermostat and the ther-
mostat is operating on battery power only.
CAUTION
!

17
•AUDIO PROMPTING —Each timeyoupress
a button, the thermostat will beep.
•BACKLIT DISPLAY — When you press any
button on the thermostat, the display is lit for
approximately eight seconds.
•SYSTEMINDICATORLIGHT—Theredlight
on the upper right part of the thermostat indi-
catessystem operation (see PARTS OF THE
THERMOSTAT).
On systems with Taco zone valves, the indicator
light will flash during the heating cycle.
•COMPRESSOR SHORT CYCLE PROTEC-
TION — To protect your compressor from
potential damage due to rapid cycling, this
thermostat has a built-in delay of 5 minutes
between cooling cycles. The following may
cause a time delay in COOL:
a) Return of power after a power outage.
b) Pressing
SYSTEM
SWITCH
to change operating
modes.
c) Pressing , creating a call for COOL
too soon after a previous call.
•TOTALKEYPADLOCKOUT—WhenGroup
A option switch #1 is in the total keypad
lockout position (ON), programs cannot be
altered and all buttons are disabled.
Programming should be completed and batteries
should be installed before changing Group A
option switches #1 or #2.
NOTE
NOTE
PROGRAMMING

18
Total Keypad Lockout Switch Positions
Switch #1 ON
Switch #2 OFF
To enable total keypad lockout, move Group
A option switch #1 to ON (see figure above).
To disable total keypad lockout, move option
switch #1 to OFF.
ON
12
Group A
Option
Switches
PROGRAMMING YOUR THERMOSTAT
PROGRAMMING
Now you are ready to program your thermostat.
This section will help you plan your thermostat's
program to meet your needs.
For maximum comfort and efficiency, keep the
following guidelines in mind when planning your
program.
• When heating (cooling) your building, pro-
gram the temperatures to be cooler (warmer)
when the building is vacant or during periods
of low activity.
• Duringearlymorninghours,theneedforcool-
ing is usually minimal.

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PLANNING FOR YOUR NEEDS
First, answer the following questions to help you
decide what your needs are. If you are using the
thermostat for a commercial application (a store,
officebuilding,etc.),answerquestions1through4.
If you are using the thermostat in your home,
answer questions 5 through 8.
FOR COMMERCIAL APPLICATIONS:
1a. What time does the first person arrive at the
building in the morning?
b. What temperature should the building be at
this time? (heating? cooling?) These will be
your MOR (morning) temperature settings.
2a. What time do the building occupants reach a
maximum activity level (using lights, equip-
ment, meeting rooms, etc.)?
b. What temperature should the building be at
this time? These will be your DAY tempera-
ture settings.
3a. What time do the building occupants reach a
minimum activity level (limited personnel in
building)?
b. What temperature should the building be at
this time? These will be your EVE (evening)
temperature settings.
4a. What time does the building become vacant?
b. What temperature should the building be at
this time? These will be your NHT (night)
temperature settings.
IN YOUR HOME:
5a. What time does the first person get up in the
morning?
b. Whattemperature should the house be atthis
time? These will be your MOR (morning)
temperature settings.
6a. What time does the last person leave the
house in the morning?

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b. Whattemperature should the house be atthis
time? These will be your DAY temperature
settings.
7a. Whattimedoesthefirstpersonarrivehomein
the evening?
b. Whattemperature should the house be atthis
time? These will be your EVE (evening)
temperature settings.
8a. What time does the last person go to bed at
night?
b. Whattemperature should the house be atthis
time? ThesewillbeyourNHT(night)tempera-
ture settings.
Nowlookatthe factorypreprogrammedtimesand
temperatures shown at right. If this program will
suit your needs, simply press
RUN
PRGM
to begin run-
ning the factory preset program.
If you want to change the preprogrammed times
and temperatures, follow these steps.
1. Determine the heating and cooling tempera-
turesyouwanttouse. Youmayselectuptofour
heatingtemperatures(HEATA,HEATB,HEAT
C, and HEAT D), and up to four cooling tem-
peratures (COOL A, COOL B, COOL C, and
COOL D). Use the table on the following page
to write down the temperatures you have se-
lected.
TooperateproperlyintheAUTOmode,theremust
bea minimum 1°F separation between the high-
Heating Program for
ALL days of the Week: Cooling Program for
ALL Days of the Week:
PERIOD TIME TEMP PERIOD TIME TEMP
1
2
3
4
5:00 AM
9:00 AM
4:00 PM
10:00 PM
70
70
70
64
1
2
3
4
5:00 AM
9:00 AM
4:00 PM
10:00 PM
78
82
78
78
NOTE