White Rodgers Thermostat 1F80 241 User Manual

1F80-241  
Programmable Electronic Digital Thermostat  
INSTALLATION AND  
OPERATION INSTRUCTIONS  
Operator: Save these instructions for future use!  
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY  
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE  
PERSONAL INJURY AND/OR PROPERTY DAMAGE.  
DESCRIPTION  
Your new White-Rodgers 5-Day/1-Day/1-Day Digital Thermo-  
stat uses the technology of a solid-state microcomputer to  
provideprecisetime/temperaturecontrol. Thisthermostatoffers  
you the flexibility to design heating and cooling programs that fit  
your needs.  
• LCD continuously displays set point, and alternately dis-  
plays time and room temperature  
• Temperature override until next program period  
• Manual program override (HOLD temperature)  
• Temporary HOLD  
Features:  
°F/°C convertibility  
• Temperature range 45° to 90°F  
• RC, RH, C, W, Y, G , O and B terminals  
• B and O terminals for single stage heat pumps (no auxiliary  
heat) or damper operation  
• Program storage in case of power loss.  
• 24 Volt System powered.  
• Separate 5-day (weekday), 1-day (Sat) and 1-day (Sun) pro-  
gramming with four separate time/temperature settings per day  
• Simultaneous heat and cool program storage  
• Preprogrammed temperature control  
• Backlit display  
PRECAUTIONS  
Thisthermostatisintendedforusewithalowvoltagesystem;do  
not use this thermostat with a line voltage system. If in doubt  
about whether your wiring is millivolt, line, or low voltage, have  
itinspectedbyaqualifiedheatingandairconditioningcontractor  
or electrician.  
WARNING  
!
Do not use on circuits exceeding specified voltage.  
Higher voltage will damage control and could cause  
shock or fire hazard.  
Do not short out terminals on gas valve or primary  
control to test. Short or incorrect wiring will damage  
thermostat and could cause personal injury and/or  
property damage.  
Do not exceed the specification ratings.  
Allwiringmustconformtolocalandnationalelectricalcodesand  
ordinances.  
This control is a precision instrument, and should be handled  
carefully. Roughhandlingordistortingcomponentscouldcause  
the control to malfunction.  
Thermostat installation and all components of the  
system shall conform to Class II circuits per the NEC  
code.  
CAUTION  
!
To prevent electrical shock and/or equipment dam-  
age, disconnect electric power to system at main fuse  
or circuit breaker box until installation is complete.  
SPECIFICATIONS  
ELECTRICAL DATA  
APPLICATIONS  
Electrical Rating:  
For use with:  
18 to 30 VAC 50/60 Hz. or D.C.  
0.05 to 1.0 Amps (Load per terminal)  
1.5 Amps Maximum Total Load (All terminals combined)  
Standard heat/cool or heat only systems  
Electric heat systems  
Gas or oil fired systems  
Gas systems with intermittent ignition devices (I.I.D.)  
and/or vent dampers  
Hydronic (hot water or steam) systems  
Single-stage heat pump systems (no auxiliary heat)  
THERMAL DATA  
Setpoint Temperature Range:  
45°F to 90°F (7°C to 32°C)  
Operating Ambient Temperature Range:  
32°F to 105°F  
Operating Humidity Range:  
0 to 90% RH (non-condensing)  
Shipping Temperature Range:  
-4°F to 150°F  
DO NOT USE WITH:  
Millivolt systems  
Multi-stage systems  
Systems exceeding 30 VAC and 1.5 amps  
3-wire zoned hydronic heating systems  
WHITE-RODGERS  
EMERSON ELECTRIC CO.  
PART NO. 37-6313A  
Printed in U.S.A.  
9797 REAVIS ROAD  
ST. LOUIS, MISSOURI 63123-5398  
0144  
 
JUMPER  
WIRE  
THERMOSTAT  
SYSTEM  
Hot  
Y
C
B
O
G
W
RC  
RH  
THERMOSTAT  
SYSTEM  
C
Y
B
O
G
W
RC  
RH  
Cooling  
System Relay System  
Fan  
Heating  
24 VAC  
120 VAC  
Neutral  
Fan  
Relay  
Heating  
System  
Hot  
HEATING  
TRANSFORMER  
24 VAC  
120 VAC  
Neutral  
Hot  
TRANSFORMER  
24 VAC  
120 VAC  
Neutral  
Figure 2. Typical wiring diagram for  
heat only, 3-wire, single transformer systems  
with common connection (required)  
COOLING TRANSFORMER  
Figure 5. Typical wiring diagram for  
heat/cool, 5-wire, two-transformer systems  
with common connection (required)  
JUMPER  
WIRE  
THERMOSTAT  
C
B
O
Y
G
W
RC  
RH  
SYSTEM  
JUMPER  
WIRE  
JUMPER  
WIRE  
Cooling  
Fan  
THERMOSTAT  
SYSTEM  
System Relay  
Hot  
Y
C
B
O
G
W
RC RH  
24 VAC  
120 VAC  
Neutral  
Reversing Compressor Fan  
Valve*  
Contactor Relay  
Hot  
TRANSFORMER  
24 VAC  
120 VAC  
Neutral  
Figure 3. Typical wiring diagram for  
cool only, 3-wire, single transformer systems  
with common connection (required)  
* Reversing valve is energized when the  
system switch is in the COOL position  
TRANSFORMER  
Figure 6. Typical wiring diagram for heat pump  
with reversing valve energized in COOL  
with common connection (required)  
NOTE  
RED jumper wire (provided with thermostat) must be  
connected between thermostat RH and RC terminals  
for proper thermostat operation with this system.  
JUMPER  
WIRE  
JUMPER  
WIRE  
JUMPER  
WIRE  
THERMOSTAT  
SYSTEM  
Y
C
B
O
G
W
RC RH  
THERMOSTAT  
SYSTEM  
Y
C
B
O
G
W
RC RH  
Cooling  
System Relay  
Fan  
Heating  
System  
Reversing Compressor Fan  
Valve*  
Contactor Relay  
Hot  
Hot  
24 VAC  
120 VAC  
Neutral  
24 VAC  
120 VAC  
Neutral  
* Reversing valve is energized when the  
system switch is in the HEAT position  
TRANSFORMER  
TRANSFORMER  
Figure 7. Typical wiring diagram for heat pump  
with reversing valve energized in HEAT  
with common connection (required)  
Figure 4. Typical wiring diagram for  
heat/cool, 4-wire, single transformer systems  
with common connection (required)  
Cooling System  
2. Press  
toadjustthermostatsettingbelowroomtempera-  
CAUTION  
!
ture.Theblowershouldcomeonimmediatelyonhighspeed,  
followed by cold air circulation  
Topreventcompressorand/orpropertydamage, ifthe  
outdoor temperature is below 50°F, DO NOT operate  
the cooling system.  
3. Press  
to adjust temperature setting above room tem-  
perature. The cooling system should stop operating.  
1. Move SYSTEM switch to COOL position.  
OPERATION  
The Thermostat Buttons and Switches  
Before you begin programming your thermostat, you should be  
familiarwithitsfeaturesandwiththedisplayandthelocationand  
operation of the thermostat buttons. Your thermostat consists of  
two parts: the thermostat cover and the base. To remove the  
cover, pullitstraightoutfromthebase. Toreplacethecover, line  
up the cover with the base and press until the cover snaps onto  
the base.  
1
2
3
4
5
6
Raises temperature setting.  
Lowers temperature setting.  
TIME button.  
PRGM (program) button.  
THE THERMOSTAT BASE  
RUN (program) button.  
Other than  
and  
, the following buttons and switches are  
HOLD temperature button.  
located on the bottom of the thermostat cover (see fig. 8).  
3
 
CONFIGURATION MENU  
The configuration menu allows you to set certain thermostat  
operatingcharacteristicstoyoursystemorpersonalrequirements.  
1
Press RUN to make sure the thermostat is in the run program  
mode, then press PRGM and RUN at the same time to enter the  
configuration menu. The display will show the first item in the  
configuration menu.  
2
FAN  
SYSTEM  
TIME  
PRGM  
RUN  
HOLD  
The configuration menu chart below summarizes the configura-  
tion options. An explanation of each option follows.  
ON AUTO COOL OFF HEAT  
Press HOLD to change to the next menu item or press TIME to  
gobackwardstothepreviousiteminthemenu. Toexitthemenu  
and return to the program operation, press RUN. If no keys are  
pressed within fifteen minutes, the thermostat will revert to  
normal operation.  
3
4
5
6
7
8
9
9
MO TU WE TH FR  
SA SU  
PM  
1) SelectTemporaryHoldTime-Thethermostatcanholdany  
temperature you set it to for the amount of time you select on  
this option. Your choices are 0:00 to 8:00 hours in 15 minute  
increments. 0:00 disables the function  
AM  
HOLD  
Example: Using the Temporary Hold Function  
11  
10  
13 11  
10  
12  
1. You have selected 3:00 hours for the Temporary Hold  
time period.  
Figure 8. Thermostat display, buttons, and switches  
2. With the thermostat set to Heat or Cool, press HOLD for  
five seconds (time will show 3:00 hours as a setting  
reminder).  
7
8
FAN switch (ON, AUTO).  
SYSTEM switch (COOL, OFF, HEAT).  
3. HOLD on the display will blink.  
The Display  
4. Use  
or  
to set the temperature to your prefer-  
ence. The thermostat will maintain this temperature  
setting for 3 hours with HOLD blinking to remind you it is  
in Temporary Hold. After 3 hours the thermostat will go  
back to the program temperature and HOLD will no  
longer blink or display.  
9
Indicates day of the week.  
10  
Flame icon ( ) is displayed when the SYSTEM switch is in  
the HEAT position. Snowflake icon ( )is displayed (non-  
flashing)whentheSYSTEMswitchisintheCOOLposition. 2) Select FA or SL (Fast or Slow) Heating Cycle Rate - The  
Snowflake is displayed (flashing) if the thermostat is in  
lockout mode to prevent the compressor from cycling too  
quickly.  
FA setting is frequently used for gas, oil or electric heat. The  
SL setting produces a longer heating cycle which is nor-  
mally for hot water or steam (hydronic) systems. Both  
settings produce very accurate temperature control and  
can be set to your personal preference. FA cycles the  
system just under 1°F and the SL setting cycles at approxi-  
mately 1.5°F.  
11  
12  
Alternately displays current time and temperature.  
Displays currently programmed set temperature (this is  
blank when SYSTEM switch is in the OFF position).  
3) Select backlit display - The display backlight improves  
display contrast in low lighting conditions. Selecting back-  
light ON will keep the light on continuously. Selecting OFF  
will keep the light off.  
The word HOLD is displayed when the thermostat is in the  
HOLD mode. HOLD is displayed flashing when the thermo-  
stat is in a temporary HOLD Mode.  
Configuration Menu  
Step  
Press Button(s)  
Displayed (Factory Default) Press  
or  
to select:  
COMMENTS  
Select temporary Hold time  
1
HOLD  
0 to 8 hrs (in  
PRGM  
and RUN  
(0:00)  
15 minute increments0)  
Select FA or SL (Fast or Slow) heating cycle rate  
SL  
2
3
4
5
6
HOLD  
*
(FA)  
d-L  
(ON)  
OFF  
OFF  
Select display backlight OFF or ON  
HOLD  
HOLD  
*
*
E
(ON)  
Select Energy Management Recovery OFF or ON  
LOC  
(OFF)  
ON  
HOLD  
HOLD  
*
*
Select Compressor lockout OFF or ON  
Select temperature display adjustment higher or lower  
0 HI  
(0)  
4 LO to  
4 HI  
Select temperature display to °F or °C  
(F)  
°C  
HOLD  
RUN  
*
7
8
Returns to normal operation  
* Press HOLD to advance to next item or TIME to move backwards to previous item  
4
 
4) Select Energy Management Recovery OFF or ON -  
Energy Management Recovery (EMR) causes the thermo-  
stat to start heating or cooling early to make the building  
temperature reach the program setpoint at the time you  
specify. Heating will start 5 minutes early for every 1° of  
temperature required to reach setpoint.  
press HOLD button. HOLD will be displayed. Then choose  
the desired temperature by pressing or . The  
thermostat will hold the room temperature at the selected  
setting until you press RUN button to start program opera-  
tion again.  
CONFIGURATION MENU Allows you to customize  
certain thermostat options.  
Example: You select EMR and have your heating pro-  
grammed to 65° at night and 70° at 7 AM. If the building  
temperature is 65° the difference between 65° and 70° is 5°.  
Allowing 5 minutes per degree the thermostat setpoint will  
change to 70° at 6:35 AM. Cooling allows more time per  
degree because it takes longer to reach temperature.  
PROGRAMMING YOUR THERMOSTAT  
This section will help you plan your thermostats program to  
meetyourneeds.Formaximumcomfortandefficiency,keepthe  
following guidelines in mind when planning your program.  
5) Select Compressor Lockout LOC OFF or ON - Selecting  
LOC ON will cause the thermostat to wait 5 minutes before  
turning on the compressor if the heating and cooling system  
loses power. It will also wait 5 minutes minimum between  
coolingcycles. Thisisintendedtohelpprotectthecompres-  
sor from short cycling. Some newer compressors already  
have a time delay built in and do not require this feature.  
Your compressor manufacturer can tell you if the feature is  
already present in their system. When the compressor time  
delay occurs it will flash the (snowflake icon) for about five  
minutes then turn on the compressor.  
When heating (cooling) your building, program the tem-  
peratures to be cooler (warmer) when the building is vacant  
or during periods of low activity.  
During early morning hours, the need for cooling is usually  
minimal.  
Planning Your Program  
Look at the factory preprogrammed times and temperatures  
showninthesampleschedule. Ifthisprogramwillsuityourneeds,  
simply press the RUN button to begin running the factory preset  
program.  
6) Select Temperature Display Adjustment 4 LO to 4 HI -  
Allows you to adjust the room temperature display 4° higher  
or lower. Your thermostat was accurately calibrated at the  
factory but you have the option to change the display  
temperature to match your previous thermostat.  
If you want to change the preprogrammed times and tempera-  
tures, follow these steps.  
Determine the time periods and temperatures for your weekday  
andweekendprograms.Youmustprogramfourperiodsforboth  
the weekday and weekend program. However, you may use the  
same heating and cooling temperatures for consecutive time  
periods. You can choose start times, heating temperatures, and  
cooling temperatures independently for both weekday and  
weekend programs (for example, you may select 5:00 AM and  
70° as the weekday 1st period heating start time and tempera-  
ture, and also choose 7:00 AM and 76° as the weekday 1st  
period cooling start time and temperature).  
7) Select F° or C° Readout - Changes the display readout to  
Celsius or Fahrenheit as required.  
OPERATING FEATURES  
Now that you are familiar with the thermostat buttons and  
display, read the following information to learn about the many  
features of the thermostat.  
SIMULTANEOUS HEATING/COOLING PROGRAM  
STORAGEWhenprogramming,youcanenterbothyour  
heating and cooling programs at the same time. There is no  
need to reprogram the thermostat at the beginning of each  
season.  
Use the following table to plan your program time periods and  
the temperatures you want during each period. Fill in the  
complete table to have a record of your programs.  
Entering Your Program  
TEMPERATUREOVERRIDEPress  
or  
untilthe  
display shows the temperature you want. The thermostat  
will override current programming and keep the room  
temperature at the selected temperature until the next  
program period begins. Then the thermostat will automati-  
cally revert to the program.  
Follow these steps to enter the heating and cooling programs  
you have selected.  
Set Current Time and Day  
1. PressTIMEbuttononce. Thedisplaywillshowthehouronly.  
HOLD TEMPERATURE The thermostat can hold any  
temperature within its range for an indefinite period without  
reverting to the programmed temperature. Momentarily  
PM  
EXAMPLE:  
SAMPLE  
Heating/Cooling Schedule Plan (Factory Program)  
Heating/Cooling Schedule Plan  
SATURDAY (1 DAY)  
SUNDAY (1 DAY)  
WEEKDAY (5 DAY)  
SATURDAY (1 DAY)  
SUNDAY (1 DAY)  
WEEKDAY (5 DAY)  
Start  
Time  
Start  
Time  
Start  
Time  
Start  
Time  
Start  
Time  
Start  
Time  
Period  
1ST  
Temperature  
70˚F  
Temperature  
70˚F  
Temperature  
70˚F  
Period  
1ST  
Temperature  
Temperature  
Temperature  
6:00 AM  
6:00 AM  
6:00 AM  
2ND  
3RD  
4TH  
1ST  
2ND  
3RD  
4TH  
8:00 AM  
5:00 PM  
10:00 PM  
6:00 AM  
8:00 AM  
5:00 PM  
10:00 PM  
62˚F  
70˚F  
62˚F  
78˚F  
85˚F  
78˚F  
82˚F  
8:00 AM  
5:00 PM  
10:00 PM  
6:00 AM  
8:00 AM  
5:00 PM  
10:00 PM  
62˚F  
70˚F  
62˚F  
78˚F  
85˚F  
78˚F  
82˚F  
8:00 AM  
5:00 PM  
10:00 PM  
6:00 AM  
8:00 AM  
5:00 PM  
10:00 PM  
62˚F  
70˚F  
62˚F  
78˚F  
85˚F  
78˚F  
82˚F  
2ND  
3RD  
4TH  
1ST  
2ND  
3RD  
4TH  
5
 
2. Press and hold either  
or  
until you reach the correct  
CAUTION  
!
hour and AM/PM designation (AM begins at midnight; PM  
If the outside temperature is below 50°F, disconnect  
power to the cooling system before programming.  
Energizing the air conditioner compressor during  
cold weather may cause personal injury or property  
damage.  
begins at noon).  
3. PressTIMEonce.Thedisplaywindowwillshowtheminutesonly.  
EXAMPLE:  
CHECK YOUR PROGRAMMING  
4. Press and hold either  
minutes.  
or  
until you reach the correct  
Follow these steps to check your thermostat programming one  
final time before beginning thermostat operation.  
5. Press TIME once. The display will show the day of the week.  
6. Press or untilyoureachthecurrentdayoftheweek.  
1. Move SYSTEM switch to HEAT position.  
2. Press PRGM to view the 1st weekday heating period time  
and temperature. Each time you press PRGM, the next  
heating period time and temperature will be displayed in  
sequence for weekday, then weekend program periods (you  
may change any time or temperature during this procedure).  
7. Press RUN once. The display will show the correct time and  
room temperature alternately.  
Enter Heating Program  
1. Move the SYSTEM switch to HEAT.  
3. Press RUN.  
2. Press PRGM once. MO TU WE TH FR(indicating weekday  
program) will appear in the display. Also displayed are the  
currently programmed start time for the 1st heating period  
and the currently programmed temperature (flashing).  
4. Move SYSTEM switch to COOL position.  
5. Repeat step 2 to check cooling program.  
6. Move SYSTEM switch to HEAT or COOL and press RUN  
to begin program operation.  
MO TU WE TH FR  
AM  
YOUR THERMOSTAT IS NOW COMPLETELY PROGRAMMED AND  
READY TO PROVIDE MAXIMUM COMFORT AND EFFICIENCY!  
EXAMPLE:  
This display window shows that for the 1st weekday period,  
the start time is 6:00 AM, and 68° is the programmed  
temperature(thisexamplereflectsfactorypreprogramming).  
TROUBLESHOOTING  
No Heating  
With the SYSTEM switch set to HEAT, when the setpoint  
temperature is raised or lowered past the room temperature,  
the thermostat will make a soft click sound. Usually, the sound  
indicates the thermostat is operating correctly. If the system  
does not come on, check the system or contact your heating/  
cooling service person. If the thermostat does not click try the  
Reset Operation listed below.  
3. Press  
or  
to change the displayed temperature to  
your selected temperature for the 1st heating program  
period.  
4. Press TIME once (the programmed time will flash). Press  
or  
until your selected time appears. The time will  
change in 15 minute increments. When your selected time is  
displayed, press TIME again to return to the change tem-  
perature mode.  
No Cooling  
Same procedure as heating except set SYSTEM switch to  
COOL. There can be up to a 5 minute compressor lock-out time  
delay before the thermostat clicks in COOL.  
5. Press PRGM once. The currently programmed start time  
and setpoint temperature for the 2nd heating program  
period will appear.  
Blank Display  
A blank digital display usually indicates loss of power to the  
thermostat from the heating and cooling system or indicates  
the thermostat has received a voltage spike or static discharge  
(see Reset Operation).  
6. Repeat steps 3 and 4 to select the start time and heating  
temperature for the 2nd heating program period.  
7. Repeatsteps3through5forthe3rdand4thheatingprogram  
periods. Weekday heating programs are now complete.  
The thermostat must have 24 volts constantly supplied to  
terminals RC/RH and C. A blown fuse or tripped breaker could  
cause a power loss. Also, many furnaces contain safety or limit  
devices that can disconnect the power to the thermostat  
intermittently.  
8. Press PRGM once. SA(indicating Saturday program) will  
appear in the display, along with the start time for the 1st  
heating period and the currently programmed temperature.  
9. Repeat steps 3 through 7 to complete Saturday heating  
programming.  
Time Loss  
10.Press PRGM once. SU(indicating Sunday program) will  
appear in the display, along with the start time for the 1st  
heating period and the currently programmed temperature.  
The thermostat maintains its program in memory during a  
power loss but the clock time freezes until power is restored. If  
your clock does not keep accurate time you may be losing  
power. Check with your service person for additional assis-  
tance.  
11.Repeat steps 3 through 7 to complete Sunday heating  
programming.  
12.When you have completed entering your heating program,  
press RUN.  
Reset Operation  
If a voltage spike or static discharge blanks out the display or  
causes erratic thermostat operation you can reset the thermo-  
Enter Cooling Program  
1. Move SYSTEM switch to COOL position.  
stat by pressing  
,
and TIME at the same time. This  
2. Follow the procedure for entering your cooling program,  
using your selected cooling times and temperatures.  
also resets the factory defaults to the configuration menu  
and program. If the thermostat has power, has been reset and  
still does not function correctly contact your heating/cooling  
service person or place of purchase.  
 

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