White Rodgers 1F90W-51 User manual

OPERATION GUIDE
5 Day/2 Day Electronic
Digital Thermostat
1F90W-51
Operator: Save this booklet for future use!
WHITE-RODGERS
WHITE-RODGERS

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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.

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PROGRAMMING YOUR
THERMOSTAT .................................... 16
PLANNING FOR YOUR NEEDS
ENTERING YOUR PROGRAM
Set Current Time and Day
Enter Heating Program
Enter Cooling Program
CHECK YOUR PROGRAMMING
QUESTIONS AND ANSWERS................. 26
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!

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• 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)
• Armchair programming capability
• Backlit LCD displays continuous set point,
time, and room temperature
• 1.5 volt "AA" Energizer®alkaline battery
backup
YOUR NEW THERMOSTAT’S FEATURES
• Preprogrammed temperature control
• Adjustable cycle times
• 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
• Temperature range 40°to 99°F

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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 removing
or attaching the thermostat body. Equip-
mentdamageand/orpersonalinjurycould
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
!

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for approximately a year. If power loss is long
enough for the program to be lost, the thermo-
stat will automatically return to the factory pro-
grammedtemperatures(64°Fheatingand82°F
cooling) 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" Energizer® alkaline
batteries.
Before removing thermostat from the
wall to replace the batteries, remove
24vAC power from the thermostat at the
breaker/fuse box.
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.
The "AA" Energizer®alkaline batteries provide
powertothethermostatwhenthe24vACpower
is interrupted (for example, when you remove
the thermostat from the wall for programming).
Freshbatterieswillmaintainthestoredprogram
CAUTION
!

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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
3-pin Connector
6-pin Connector Batteries
W14 S3

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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,HOLD). Duringprogramming,
theprogramperiodisdisplayed(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.
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1
2
4
5
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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
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, or
COOLing).
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
TIME
FWD
and
TIME
BACK
to set current
time.
Usedwith
TIME
FWD
and
TIME
BACK
tosetthecurrent
day of the week. Also used in conjunction
with
SET
CLOCK
toenteranticipationsettingmode.
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