White Rodgers 1F94W-71 User manual

OPERATION GUIDE
7 Day Multi-stage/Heat Pump
Electronic Digital Thermostat
1F94W-71
WHITE-RODGERS
Operator: Save this booklet for future use!

2
Pleasereadthismanualthoroughlybeforeoperatingorprogrammingyourthermostat.Ifyouhave
questions, you may write to our Technical Service Department at the address shown on the back
cover of this booklet.
About Your New Thermostat . . .
Your new Digital COMFORT SET II Multi-stage/Heat Pump Thermostat uses the technology of a
solid-state microcomputer to provide precise time/temperature control. The COMFORT SET II
Thermostat offers you the flexibility to design heating and cooling programs that fit your needs.

3
Operator: Save this
booklet for future use!
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
ENTERING YOUR PROGRAM
Set Current Time and Day
Program Heating and Cooling
Temperatures
In This Guide . . .

4
• Computed Energy Management Recovery
(EMR)
• Automaticchangeover(operator-selectable)
• Separate setback programming for 7 inde-
pendent days
• Simultaneousheatandcoolprogramstorage
• Fourseparatetime/temperaturesettingsper
24-hour period
• Armchair programming capability
• Up to 3 stages of heat and up to 2 stages of
cool
• Backlit LCD displays continuous set point,
time, and room temperature
• 9 volt Energizer®alkaline battery backup
• Preprogrammed temperature control
• Adjustable cycle times
• Compressor short cycle protection
• Compressor long term cycle protection
• Blower delay in the cooling cycle
• Audio and visual prompting during operation
• Two hour temperature override
• Manual program override (HOLD tem-
perature)
•°F/°C convertibility
• Keypad lockout (operator-selectable)
• Temperature range 40°to 99°F
• Compatible with Remote Sensor (installer-
selectable)
YOUR NEW THERMOSTAT’S FEATURES

5
OPERATINGYOURTHERMOSTAT
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 out from the bottom of the subbase and
pivot up. To attach the thermostat body, line up
thefourterminalpinsontheuppersectionofthe
thermostatbackwiththematchingconnectoron
the subbase. Insert these, then gently pivot the
thermostat body down to connect the eight pin
connectors on the lower portion of the thermo-
statback.Gentlypushuntilthesnapconnectors
engage.DONOTFORCEORPRYTHETHER-
MOSTAT as this may damage the unit.
Before you begin programming your thermo-
stat,youshouldbefamiliarwithitsfeaturesand
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 ther-
mostat body and the subbase.
Use
SYSTEM
HEAT/EMER/OFF/
COOL/AUTO
to turn thermostat OFF be-
fore removing or attaching the thermo-
statbody.Equipmentdamageand/orper-
sonal injury could occur.
CAUTION
!

6
PARTS OF THE THERMOSTAT
The Back of The Thermostat Body
Turnthe thermostat body over.On the back are
the 9 volt Energizer®alkaline battery and the
option switches.
1. The 9 volt Energizer®alkaline battery pro-
vides power to the thermostat when the 24
VACpowerisinterrupted(forexample,when
youremovethethermostat fromthe wallfor
programming). A fresh battery will maintain
thestoredprogramforapproximatelyaweek.
Ifpowerlossislongenoughfortheprogram
to be lost, the thermostat will automatically
return to the factory programmed tempera-
tures(64°Fheatingand82°Fcooling)when
power is restored. You must reprogram the
thermostat if this happens.
If the word BATTERY is flashing in the
displaywindow,thebatteryislowandshould
be replaced with a fresh 9 volt Energizer®
alkaline battery. The battery will provide
power for all functions except the display
light, which works only on 24 VAC power.
BACK OF THERMOSTAT BODY
Option switches 9-pin connector
4-pin connector Battery
W18

7
Use
SYSTEM
HEAT/EMER/OFF/
COOL/AUTO
to turn thermostat OFF be-
fore removing thermostat from the wall
to replace the battery.
2. You may adjust the option switches for
keypad lockout and automatic changeover
from heat to cool (see OPERATING FEA-
TURES).
Other than and , the buttons are lo-
cated behind the thermostat door. To open the
door,useyourfingernailintheindentationatthe
top center of the door. Pull the door out, then
swing the door down on its hinges.
Following are brief descriptions of the display
and the thermostat buttons.
CAUTION
!

8
4
When
VIEW
TEMP
ispressed,Aisdisplayedwhen
the setpoint temperature displayed (at the
far right) is the 1st programmed heating or
cooling temperature (depending on mode).
Bis displayed when the 2nd programmed
heatingor cooling temperature isbeingdis-
played.
5
FAN ON is displayed when the blower is
operating continuously. FAN AUTO is dis-
playedduringautomaticfanoperation(when
theblowercycleswiththeheatingorcooling
system).
6
The word BATTERY flashes on the display
when the 9 volt alkaline battery power is
weak and should be replaced.
The Display
1
Continuouslydisplayssystemmode(HEAT,
EMER, OFF, COOL, AUTO, HOLD). Dur-
ing programming, the day of the week is
displayed (MO, TU, WE, etc.).
2
Alternately displays room temperature (F
denotesdegreesFahrenheitandCdenotes
degrees Celsius) and time of day (Ade-
notes AM time and Pdenotes PM time).
3
Displays the setpoint temperature.

9
1 2 3
466
2 DAY 5 DAY
2
3
54
FAN AUTO FAN ONBAT
5 DAY FAN AUTO
EMER. PUMP
AUX.MALF.
TIME
FWD
SYSTEM
HEAT/EMER/OFF/
COOL/AUTO
SET
CLOCK VIEW PRGM HOLD COPY
TIME
BACK
FAN
ON-AUTO
ADV
DAY VIEW TEMP RUN PRGM

10
The Thermostat Buttons
7
Sets the system mode (HEATing, OFF,
COOLing, or AUTOmatic changeover).
8
Selects fan operation (see #5, above).
9
Runs display forward or backward through
time, day, or anticipation settings during
programming.
10
Usedwith
TIME
FWD
and
TIME
BACK
tosetcurrenttime
and day of the week.
11
Used during programming to set the day of
the week to be programmed.
12
Usedtoinitiateorreviewprogramming(pro-
gram viewing automatically begins with
Monday’sprogram;use
ADV
DAY
buttontoview
programming for following days).
13
Usedwith
TIME
FWD
and
TIME
BACK
to selectsetpoint
temperatures.
14
Used to manually override programming to
holdataselectedtemperature(whenHOLD
is displayed). Also used to copy one day’s
programming to another day (when COPY
is displayed).
15
Used to start program operation after pro-
gramming.Alsousedtoreturnthermostatto
program operation after being in HOLD
mode.
16
(Red arrow) Raises temperature setting
(99°F or 37°C maximum).
17
(Blue arrow) Lowers temperature setting
(40°F or 4°C minimum).

11
10 11 12 13 14 15
16 17 18
9
7
8
5 DAY FAN
EMER. PUMP
AUX.MALF.
TIME
FWD
SYSTEM
HEAT/EMER/OFF/
COOL/AUTO
SET
CLOCK VIEW PRGM HOLD COPY
TIME
BACK
FAN
ON-AUTO
ADV
DAY VIEW TEMP RUN PRGM
fer to heat pump manufacturer’s operating
manual).Acontinuous(non-flashing)PUMP
lightindicates that the heat pump compres-
sor is functioning — a flashing PUMP light
indicatesthat the compressor islockedout.
AUXlightindicatesthattheauxiliarysystem
is operating.
18
EMER light indicates that the system is in
the emergency mode (the heat pump com-
pressor is off and the auxiliary heat system
is maintaining the setpoint temperature —
there is a 5- to 10-minute startup delay on
the first emergency cycle). MALF light indi-
cates a heat pump system malfunction (re-

12
OPERATING FEATURES
Now that you are familiar with the thermostat
displayandbuttons,readthefollowinginforma-
tion to learn about the many features of the
thermostat.
•COMPUTED ENERGY MANAGEMENT
RECOVERY (EMR) — The thermostat’s
microcomputerautomaticallycalculatesthe
timeitwilltaketochangethetemperatureto
the next program setting. Then the thermo-
stat will activate the heating or cooling sys-
tem to change the temperature so that the
desired temperature is reached at the be-
ginning of the next program period. As an
example of this feature, assume that you
have programmed your thermostat to pro-
vide an overnight heating temperature of
62°F, and that during the next program
period, beginning at 6:00 AM, you have
programmed a temperature of 70°F. The
thermostat will automatically activate the
heating system at about 5:00 AM, so that
the programmed 70°F temperature is
reached by about 6:00 AM.
•AUTOMATIC CHANGEOVER — You can
set the thermostat to automatically switch
the system from heating to cooling as
needed. First you must move option switch
#4 (located on the back of the thermostat
body)totheONposition,ifithasnotalready
beendone.Todothis,press
SYSTEM
HEAT/EMER/OFF/
COOL/AUTO
toturn
thermostat OFF. Then remove the thermo-
stat body from the wall. Check the position
of switch #4 (the last switch on the right). If
itisON(up),simplyputthethermostatback
on the wall. If the switch is OFF (down),
remove the battery, then use a pencil or

13
Automatic Changeover
Switch #1 set at installation (DO NOT CHANGE)
Switch #2 set at installation (DO NOT CHANGE)
Switch #3 (see TOTAL KEYPAD LOCKOUT)
Switch #4 ON
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 76°F, the lowest
cool setting cannot be below 77°F (see
diagram below).
small screwdriver to move the switch to the
ON position (see figure at right). Leave the
batteryoutofthethermostatforatleasttwo
minutes, to allow the thermostat to reset
itself.DONOTMOVEOPTIONSWITCHES
#1 OR #2, as this may affect thermostat
operation. [Option switch #3 enables/dis-
ables keypad lockout (see TOTAL KEY-
PAD LOCKOUT)]. Replace the battery, re-
program the thermostat, if necessary, put
thethermostatbackonthewall,andrestore
24 VAC power. To set the thermostat for
automatic changeover after programming,
press
SYSTEM
HEAT/EMER/OFF/
COOL/AUTO
tosetthethermostattoAUTO
(thesetpointtemperaturedisplayisblankin
the AUTO mode). The system will now
automatically switch between heating and
cooling,dependingontheactualroomtem-
perature.
ON
1234
79
78
77
76
75
74
73
COOLING TEMPERATURES
HEATING TEMPERATURES
DEAD BAND 1°F

14
•TWO HOUR TEMPERATURE OVER-
RIDE—Press or untilthedisplay
shows the temperature you want. The ther-
mostat will override current programming
and keep the room temperature at the se-
lected temperature for two hours. After two
hours, the thermostat will automatically re-
vert 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
displayed. Then choose the desired hold
temperature by pressing or . The
thermostat will hold the room temperature
at the selected setting until you press
RUN
PRGM
to start program operation again. This fea-
ture is ideal for energy conservation when
the building is unoccupied for an extended
period of time.
•°F/°C CONVERTIBILITY — Press
TIME
FWD
and
TIME
BACK
at the same time until the tem-
perature display is in °C(Celsius). To dis-
play °F, repeat the process.
•ADJUSTABLE HEATING AND COOLING
CYCLE TIMES (ANTICIPATION) — If the
heating/coolingsystemisturningonandoff
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 compres-
sor life.
CAUTION
!

15
Toadjustheatanticipation,press
SET
CLOCK
and
ADV
DAY
at the same time. The display will
show HEAT 18 (this is the factory prepro-
grammedheatinganticipationsetting).You
mayselectanyanticipationsettingfrom4to
40 (note that for add-on heat pump sys-
tems, a minimum anticipation setting of
10isrecommended).Wheneveradjusting
anticipation, increase or decrease the dis-
played number by only one or two digits,
then let the system run for a while to see if
theadjustmentissufficient.Iftheheatcycles
are too short, press
TIME
FWD
to increase 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
ADV
DAY
at the same time again. The display
willshowCOOL14(factorypreprogrammed
cooling anticipation). Use the
TIME
FWD
and
TIME
BACK
buttons to adjust anticipation. To set
auxiliaryheatanticipation,press
SET
CLOCK
and
ADV
DAY
at the same time again. The display
will show AUX 8 (factory preprogrammed
cooling anticipation). 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 9
volt alkaline battery is low and should be
replaced.

16
•AUDIO PROMPTING — Each time you
pressabutton,thethermostatwillbeep(this
feature works only when the thermostat is
attached to the wall and 24 VAC power is
present to the thermostat).
•BACKLIT DISPLAY — When you press
any button on the thermostat, the display is
litforapproximatelyeightseconds(thisfea-
ture works only when the thermostat is
attached to the wall and 24 VAC power is
present to the thermostat).
•SYSTEMINDICATORLIGHTS —Thefour
lights on the upper right part of the thermo-
statindicatesystemoperation (see PARTS
OF 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
between heat pump heating and cooling
cycles. The following may cause a time
delay in COOL:
a) Return of power after a power outage.
b) Pressing
SYSTEM
HEAT/EMER/OFF/
COOL/AUTO
to change operating
modes.
c) Pressing or , creating a call
for HEAT or COOL too soon after a
previous call.
•COMPRESSOR LONG TERM CYCLE
PROTECTION — If your system begins to
operate too soon after an extended power
outage, the compressor may be damaged
due to crankcase oil temperature change.
This thermostat has a built-in time delay of
one hour less than the length of the power
loss (up to 12 hours). When power is re-
stored to the system, heaters in the system

17
Total Keypad Lockout
Switch #1 set at installation (DO NOT CHANGE)
Switch #2 set at installation (DO NOT CHANGE)
Switch #3 ON
Switch #4 (see AUTOMATIC CHANGEOVER)
Switches #1 and #2 are set at installation
andshould not be changed. To enable total
keypad lockout, move option switch #3 to
ON (see figure above). DO NOT MOVE
OPTIONSWITCHES#1OR#2,asthismay
affect thermostat operation [option switch
#4enables/disables automaticchangeover
(see AUTOMATIC CHANGEOVER)]. To
disable total keypad lockout, move option
switch #3 to OFF.
will begin to heat the crankcase oils. The
thermostat’s time delay will lock out the
compressortopreventitsoperationuntilthe
compressor oil is sufficiently warmed. Dur-
ing the lockout time period, the auxiliary
heating system will operate to maintain a
setpoint temperature.
For example, if a power outage of three
hoursoccurs,thecompressorwillbelocked
out for two hours.
•TOTAL KEYPAD LOCKOUT — When op-
tion switch #3 is in the total keypad lockout
position (ON), programs cannot be altered
and all buttons are disabled.
Programming should be completed and bat-
tery should be installed before changing op-
tion switch #3.
NOTE
ON
1234

18
PROGRAMMINGYOURTHERMOSTAT
Nowyouare ready to program your thermostat.
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. If you are using the thermostat in your home,
answer questions 5 through 8.
FOR COMMERCIAL APPLICATIONS:
1a. Whattimedoesthefirstpersonarriveatthe
building in the morning?
b. Whattemperature should the building be at
this time? (heating? cooling?)
2a. What time do the building occupants reach
amaximumactivitylevel(usinglights,equip-
ment, meeting rooms, etc.)?
b. Whattemperature should the building be at
this time?

19
3a. What time do the building occupants reach
a minimum activity level (limited personnel
in building)?
b. Whattemperature should the building be at
this time?
4a. Whattimedoesthebuildingbecomevacant?
b. Whattemperature should the building be at
this time?
IN YOUR HOME:
5a. Whattimedoesthefirstpersongetupinthe
morning?
b. What temperature should the house be at
this time?
6a. What time does the last person leave the
house in the morning?
b. What temperature should the house be at
this time?
7a. Whattimedoesthefirstpersonarrivehome
in the evening?
b. What temperature should the house be at
this time?
8a. Whattime does the last persongo to bed at
night?
b. What temperature should the house be at
this time?
Nowlookatthefactorypreprogrammedtimes
and temperatures shown on the following
page. If this program will suit your needs,
simplypress
RUN
PRGM
tobeginrunningthefactory
preset program.

20
Temperature
Designation
Factory
Preprogrammed
Temperature
Your
Selected
Temperature
HEAT A
HEAT B
HEAT C
HEAT D
COOL A
COOL B
COOL C
COOL D
70°F
64°F
---
---
78°F
82°F
---
---
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°F
70°F
70°F
64°F
1
2
3
4
5:00 AM
9:00 AM
4:00 PM
10:00 PM
78°F
82°F
78°F
78°F
FACTORY PREPROGRAMMING
Ifyouwanttochangethepreprogrammedtimes
and temperatures, follow these steps.
1. Determine the heating and cooling tem-
peratures you want to use. You may select
up to four heating temperatures (HEAT A,
HEAT B,HEAT C, and HEAT D), and up to
fourcoolingtemperatures(COOLA,COOL
B, COOL C, COOL D). Use the table at the
right to write down the temperatures you
have selected.