White Rodgers 1F90W-71 User manual

OPERATION GUIDE
5 Day/2 Day Electronic
Digital Thermostat
1F90W-71
Operator: Save this booklet for future use!
WHITE-RODGERS
WHITE-RODGERS

2
About Your New Thermostat . . .
Your new White-Rodgers Digital Thermostat uses the technology of a solid-state microcomputer
to provide precise time/temperature control. This thermostat offers you the flexibility to design
heating and cooling programs that fit your needs.
Pleasereadthismanualthoroughlybeforeoperatingorprogrammingyourthermostat. Ifyouhave
questions, write to us at the address shown on the back cover of this manual.

3
PROGRAMMING YOUR
THERMOSTAT .................................... 19
PLANNING FOR YOUR NEEDS
ENTERING YOUR PROGRAM
Set Current Time and Day
Enter Heating Program
Enter Cooling Program
CHECK YOUR PROGRAMMING
QUESTIONS AND ANSWERS................. 29
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
In This Guide . . .
Operator: Save this
booklet for future use!

4
• Separate5-day(weekday)and2-day(week-
end) setback programming
• Simultaneous heat and cool program stor-
age
• Fourseparatetime/temperaturesettingsper
24-hour period
• Computed Energy Management Recovery
(EMR)
• Automaticchangeover(operator-selectable)
• Armchair programming capability
• Backlit LCD displays continuous set point,
time, and room temperature
• 1.5 volt "AA" Energizer®alkaline battery
backup
• Preprogrammed temperature control
• Adjustable cycle times
YOUR NEW THERMOSTAT’S FEATURES
• Compressor short cycle protection
• Programmable blower control
• Blower delay in the cooling cycle
• Audio and visual prompting during opera-
tion
• Two hour temperature override
• Manual program override (HOLD tempera-
ture)
• "Advance Program" key
•°F/°C convertibility
• Keypad lockout and limited temperature
range (operator-selectable)
• Temperature range 40°to 99°F
• Compatible with Remote Sensor (installer-
selectable)

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OPERATING YOUR THERMOSTAT
SUBBASE
THERMOSTAT
BODY
Before you begin programming your thermo-
stat,you shouldbe familiarwith itsfeatures and
with the display and the location and operation
of the thermostat buttons. The information in
this section will help you become familiar with
your new thermostat so that you can easily
program it.
Your thermostat consists of two parts: the
thermostat body and the subbase.
Remove power from the system at the
circuit breaker/fuse box before remov-
ing or attaching the thermostat body.
Equipment damage and/or personal in-
jury could occur.
Thesubbaseisattachedtothewall,butyoucan
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
thethermostatbody,lineupthesixterminalpins
ontheuppersectionofthethermostatbackwith
the matching connector on the subbase. Insert
CAUTION
!

6
these, then gently pivot the thermostat body
downtoconnectthethreepinconnectorsonthe
lower portion of the thermostat back. Gently
push until the snap connectors engage. DO
NOTFORCEORPRYTHETHERMOSTAT,as
this may damage the unit.
PARTS OF THE THERMOSTAT
The Back of The Thermostat Body
Turnthethermostatbodyover. Onthebackare
the 3 "AA" Energizer®alkaline batteries and the
two option switch groups (A and B).
1. The "AA" Energizer®alkaline batteries pro-
videpowertothethermostatwhenthe24vAC
powerisinterrupted(forexample,whenyou
remove the thermostat from the wall for
programming). Fresh batteries will main-
tainthestored programfor approximatelya
year. If power loss is long enough for the
programto belost,the thermostatwill auto-
matically return to the factory programmed
temperatures (64°F heating and 82°F cool-
ing) when power is restored. You must
reprogram the thermostat if this happens.
If the word BATTERY is flashing in the
display window, the batteries are low and
should be replaced with fresh "AA" Ener-
gizer® alkaline batteries.
Before removing thermostat from the
wall to replace the batteries, remove
24vAC power from the thermostat at the
breaker/fuse box.
CAUTION
!

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2. You may adjust the option switches for
keypad lockout, limited temperature range,
andautomaticchangeoverfromheattocool
(see OPERATING FEATURES).
Other than and , the buttons are
locatedbehindthethermostatdoor. Toopenthe
door, pull the door out from the top, then swing
it down on its hinges.
On the following pages there are brief descrip-
tions 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
when the "AA" alkaline batteries are weak
and should be replaced. The word BAT-
TERYisdisplayedcontinuously(non-flash-
ing) when thermostat is running on battery
power only.
FAN ON is displayed when the blower is
operating continuously. FAN AUTO is dis-
playedduringautomaticfanoperation(when
theblowercycleswiththeheatingorcooling
system).
The Display
Continuouslydisplayssystemmode(HEAT,
OFF, COOL, AUTO, HOLD). During pro-
gramming, the program period is displayed
(MOR, DAY, EVE, or NHT).
Alternately displays room temperature (F
denotesdegreesFahrenheitandCdenotes
degrees Celsius) and time of day (Ade-
notes AM time and Pdenotes PM time).
Displays the setpoint temperature.
5DAYindicatesthatthedisplayedprogram
is the weekday program. 2 DAY indicates
that the displayed program is the weekend
program.
1
2
3
4
5
6

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1 2 3
466
2 DAY 5 DAY
2
3
4
FAN AUTO FAN ON
5 DAY FAN AUTO
5
BATTERY
TIME
FWD
SYSTEM
HEAT-OFF-COOL-AUTO
SET
CLOCK VIEW PRGM HOLD TEMP
TIME
BACK
FAN
ON - AUTO
SET
DAY RUN PRGM ADV PRGM

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Used to initiate or review thermostat pro-
gramming.
Used to start program operation after pro-
gramming. Also used to return thermostat
to program operation after being in HOLD
mode.
Used to manually override programming to
holdataselectedtemperature(whenHOLD
is displayed).
Usedtoadvancethermostatprogramtothe
next program period (for example, from the
MOR program to the DAY program).
(Red arrow) Raises temperature setting
(99°F or 37°C maximum).
(Blue arrow) Lowers temperature setting
(40°F or 4°C minimum).
Theredindicatorlightglowswheneverheat-
ing, cooling, or fan are in operation.
The Thermostat Buttons
Sets the system mode (HEATing, OFF,
COOLing, or AUTOmatic changeover).
Selectsfanoperation(see#6,above). This
buttonisalsousedtoprogramthefantorun
continuously during a program period.
Runs display forward or backward through
time, day, or anticipation settings during
programming.
Used with the
TIME
FWD
and
TIME
BACK
buttons to
set current time and day of the week.
Used during programming to set the day of
the week to be programmed. Also used in
conjunction with the
SET
CLOCK
button to enter
anticipation setting mode.
7
8
9
10
12
14
13
11
15
16
17
18

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

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OPERATING FEATURES
Now that you are familiar with the thermostat
displayand buttons,readthe followinginforma-
tion to learn about the many features of the
thermostat.
•COMPUTED ENERGY MANAGEMENT
RECOVERY (EMR) — The thermostat’s
microcomputer can be set to automatically
calculate the time it will take to change the
temperature to the next program setting.
Then the thermostat will activate the heat-
ing or cooling system to change the tem-
perature so that the desired temperature is
reached at the beginning of the next pro-
gramperiod. Asanexampleofthisfeature,
assume that you have programmed your
thermostat to provide an overnight heating
temperature of 62°F, and that during the
nextprogramperiod,beginningat6:00AM,
you have programmed a temperature of
70°F. The thermostat will automatically
activate the heating system at about 5:00
AM,sothattheprogrammed70°Ftempera-
ture is reached by about 6:00 AM.
Thisfeature iscontrolledby GroupB option
switch#3. ToenabletheEMRfunction,first
youmustmoveoptionswitch#3(locatedon
thebackofthethermostatbody)totheOFF
position,if ithasnotalready beendone. To
dothis,turnoff24vACpowertothethermo-
stat. Then remove the thermostat body
from the wall. Check the position of switch
#3 (the last switch on the right). If it is OFF
(down), simply put the thermostat back on
the wall and restore 24v AC power. If the
switch is ON (up), remove the battery, then

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use a pencil or small screwdriver to move
the switch to the OFF position (see figure
below). Leavethebatteryoutofthethermo-
stat for at least two minutes, to allow the
thermostattoresetitself. SeeAUTOMATIC
CHANGEOVER to determine proper posi-
tionsofGroup Boptionswitches#1 and#2.
EMR (ON)
Switch #1 (see AUTOMATIC CHANGEOVER)
Switch #2 (see AUTOMATIC CHANGEOVER)
Switch #3 OFF
•AUTOMATIC CHANGEOVER — If you
haveaheating/cooling system,you canset
the thermostat to automatically switch the
system from heating to cooling as needed.
(Ifyouhaveaheatingonlysystem,GroupB
option switch #1 should be OFF and option
switch #2 should be ON.) To enable auto-
maticchangeover,youmustmoveGroupB
option switch #1 to the ON position and
switch #2 to the OFF position. Turn off 24v
AC power to the thermostat. Then remove
the thermostat body from the wall. Check
the position of Group B option switches #1
and #2 (the first two switches on the left). If
they are in the correct positions, simply put
the thermostat back on the wall and restore
24v AC power. If the switches are not
correctly positioned, remove the battery,
then use a pencil or small screwdriver to
move the switches to the correct positions
(seefigureonnextpage). Leavethebattery
out of the thermostat for at least two min-
ON
123
Group B
Option
Switches

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utes, to allow the thermostat to reset itself.
Replacethebattery,reprogramthethermo-
stat, if necessary, put the thermostat back
on the wall, and restore 24v AC power. To
setthethermostatforautomaticchangeover
afterprogramming,press
SYSTEM
HEAT-OFF-COOL-AUTO
tosetthe
thermostat to AUTO (the setpoint tempera-
ture display is blank in the AUTO mode).
The system will now automatically switch
betweenheatingandcooling,dependingon
the actual room temperature.
Automatic Changeover
Switch #1 ON
Switch #2 OFF
Switch #3 (see Energy Management Recovery)
IntheAUTOmode,thethermostatwillnotallow
the temperature separation between the high-
estheatsettingandthelowestcoolsettingtobe
less than 1°F. For example, if the highest heat
settingis75°F,thelowestcoolsettingcannotbe
below 77°F (see diagram below).
For manual changeover, Group B option
switches #1 and #2 should be in the OFF
position.
•TWO HOUR TEMPERATURE OVER-
RIDE — Press or until the
NOTE
79
78
77
76
75
74
73
COOLING TEMPERATURES
HEATING TEMPERATURES
DEAD BAND 1°F
ON
123
Group B
Option
Switches

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display shows the temperature you want.
The thermostat will override current pro-
gramming and keep the room temperature
at the selected temperature for two hours.
After two hours, the thermostat will auto-
matically revert to the program.
•HOLD TEMPERATURE — Thethermostat
can hold any temperature within its range
for an indefinite period, without reverting to
the program. Press
HOLD
TEMP
. HOLD will be
displayed. Then choose the desired hold
temperature by pressing or .
The thermostat will hold the room tempera-
ture at the selected setting until you press
RUN
PRGM
to start program operation again.
Thisfeatureisidealforenergyconservation
when the building is unoccupied for an ex-
tended period of time.
•"ADVANCE PROGRAM" KEY — Press
ADV
PRGM
to change the thermostat to the next
program period. This will temporarily over-
ride the program, until the next program
period begins (for example, pressing this
key while in the DAY program will advance
the thermostat to the EVE program, which
will remain in effect until the NHT program
begins).
•°F/°C CONVERTIBILITY — Press
TIME
FWD
and
TIME
BACK
at the same time until the tem-
perature display is in °C(Celsius). To
display °F, repeat the process.
•ADJUSTABLE HEATING AND COOLING
CYCLE TIMES (ANTICIPATION) — If the
heating/coolingsystemisturningonandoff
too often (short cycles) or not often enough

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(long cycles), you may want to adjust the
anticipation setting.
Acoolinganticipationsettingoflessthan
10maycausedecreasedcompressorlife.
To adjust heat anticipation, press
SET
CLOCK
and
SET
DAY
atthesametime. Thedisplaywill
show HEAT 5 (this is the factory prepro-
grammedheatinganticipationsetting). You
mayselectanyanticipationsettingfrom2to
40 (note that for hydronic systems, a
minimum anticipation setting of 15 is
recommended). Whenever adjusting an-
ticipation, increase or decrease the dis-
played 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
cyclesaretooshort,press
TIME
FWD
toincrease
the cycle time. If the heat cycles are too
long, press
TIME
BACK
to decrease the cycle
time. To set cooling anticipation, press
SET
CLOCK
and
SET
DAY
at the same time again.
The display will show COOL 14 (factory
preprogrammed cooling anticipation). You
mayselectanyanticipationsettingfrom4to
40. Use the
TIME
FWD
and
TIME
BACK
buttons to
adjust anticipation. Press
RUN
PRGM
to return
to your program.
•LOW BATTERY INDICATOR — The word
BATTERY will flash on the display if the
"AA" alkaline batteries are low and should
CAUTION
!

17
be replaced. The word BATTERY will be
displayedcontinuously(non-flashing)when
24v AC power is not being supplied to the
thermostat and the thermostat is operating
on battery power only.
•AUDIO PROMPTING — Each time you
press a button, the thermostat will beep.
•BACKLIT DISPLAY — When you press
any button on the thermostat, the display is
lit for approximately eight seconds.
•SYSTEM INDICATOR LIGHT — The red
lightontheupperrightpartofthethermostat
indicatessystemoperation(seePARTSOF
THE THERMOSTAT).
•COMPRESSORSHORTCYCLEPROTEC-
TION — To protect your compressor from
potential damage due to rapid cycling, this
thermostat has a built-in delay of 5 minutes
betweencooling cycles. Thefollowingmay
cause a time delay in COOL:
a) Return of power after a power outage.
b) Pressing
SYSTEM
HEAT-OFF-COOL-AUTO
to change operating
modes.
c) Pressing ,creatingacallforCOOL
too soon after a previous call.
•TOTAL KEYPAD LOCKOUT — When
Group A option switch #1 is in the total
keypad lockout position (ON), programs
cannot be altered and all buttons are dis-
abled.
Programming should be completed and batter-
ies should be installed before changing Group
A option switches #1 or #2.
NOTE

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Total Keypad Lockout
Switch #1 ON
Switch #2 OFF
Toenabletotalkeypadlockout,moveGroup
Aoptionswitch#1toON(seefigureabove).
To disable total keypad lockout, move op-
tion switch #1 to OFF.
•LIMITED TEMPERATURE RANGE —
When Group A option switch #1 is in the
OFF position and option switch #2 is in the
ON position, the heating and cooling tem-
peratures may be changed using the
and buttons, but the temperatures
maynotbesettoexceedanyprogrammed
maximumheatingor minimumcoolingtem-
peratures. To enable limited temperature
range, move Group A switch #1 to the OFF
position and switch #2 to the ON position
(see figure below). To disable limited tem-
perature range, move switch #2 to the OFF
position (see TOTAL KEYPAD LOCKOUT
to determine the correct position of option
switch #1).
Programming should be completed and batter-
ies should be installed before changing Group
A option switches #1 or #2.
Limited Temperature Range
Switch #1 OFF
Switch #2 ON
NOTE
ON
12
Group A
Option
Switches
ON
12
Group A
Option
Switches

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PROGRAMMING YOUR THERMOSTAT
Nowyou areready toprogram yourthermostat.
Thissectionwillhelpyouplanyourthermostat's
program to meet your needs.
For maximum comfort and efficiency, keep the
followingguidelinesinmindwhenplanningyour
program.
• When heating (cooling) your building, pro-
gramthetemperaturestobecooler(warmer)
when the building is vacant or during peri-
ods of low activity.
• During early morning hours, the need for
cooling is usually minimal.
PLANNING FOR YOUR NEEDS
First,answerthefollowingquestionstohelpyou
decidewhatyourneedsare. Ifyouareusingthe
thermostatforacommercialapplication(astore,
officebuilding,etc.),answerquestions1through
4. Ifyou areusing thethermostatinyourhome,
answer questions 5 through 8.
FOR COMMERCIAL APPLICATIONS:
1a. Whattimedoesthefirstpersonarriveatthe
building in the morning?
b. Whattemperatureshould thebuilding beat
thistime?(heating?cooling?) Thesewillbe
your MOR (morning) temperature settings.
PROGRAMMING

20
2a. What time do the building occupants reach
amaximumactivitylevel(usinglights,equip-
ment, meeting rooms, etc.)?
b. Whattemperatureshould thebuilding beat
thistime? ThesewillbeyourDAYtempera-
ture settings.
3a. What time do the building occupants reach
a minimum activity level (limited personnel
in building)?
b. Whattemperatureshould thebuilding beat
thistime? ThesewillbeyourEVE(evening)
temperature settings.
4a. What time does the building become va-
cant?
b. Whattemperatureshould thebuilding beat
this time? These will be your NHT (night)
temperature settings.
IN YOUR HOME:
5a. Whattimedoesthefirstpersongetupinthe
morning?
b. What temperature should the house be at
this time? These will be your MOR (morn-
ing) temperature settings.
6a. What time does the last person leave the
house in the morning?
b. What temperature should the house be at
thistime? ThesewillbeyourDAYtempera-
ture settings.
7a. Whattimedoesthefirstpersonarrivehome
in the evening?
b. What temperature should the house be at
thistime? ThesewillbeyourEVE(evening)
temperature settings.
8a. Whattime doesthe lastperson goto bedat
night?
PROGRAMMING