White Rodgers 1F80 240 Users Manual 37 6325B

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1F80-240
(for HEATING ONLY systems)
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 Thermostat uses the technology of a solid-state microcomputer to
provide precise time/temperature control. This thermostat offers
you the flexibility to design a heating program that fits your needs.
Features:
• Separate 5-day (weekday), 1-day (Sat) and 1-day (Sun) programming with four separate time/temperature periods per day
• Preprogrammed temperature control
• LCD continuously displays set point, and alternately displays time and room temperature

•
•
•
•
•
•
•
•
•
•

Heat program storage
Backlit display
Temperature override until next program period
Manual program override (HOLD temperature)
Temporary HOLD
°F/°C convertibility
Temperature range 45° to 90°F
RH, W, and G terminals
Battery powered
2 “AA” Energizer® alkaline batteries included

PRECAUTIONS
This thermostat is intended for use with a low voltage system; do
not use this thermostat with a line voltage system. If in doubt
about whether your wiring is millivolt, line, or low voltage, have
it inspected by a qualified heating and air conditioning contractor
or electrician.
Do not exceed the specification ratings.
All wiring must conform to local and national electrical codes and
ordinances.
This control is a precision instrument, and should be handled
carefully. Rough handling or distorting components could cause
the control to malfunction.
! CAUTION
▲

! 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.
Thermostat installation and all components of the
system shall conform to Class II circuits per the NEC
code.

To prevent electrical shock and/or equipment damage,
disconnect electric power to system at main fuse or
circuit breaker box until installation is complete.

SPECIFICATIONS
ELECTRICAL DATA

APPLICATIONS

Electrical Rating:
8 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)
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

For use with:
• Standard 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)
• Millivolt systems
DO NOT USE WITH:
• Multi-stage systems
• Systems exceeding 30 VAC and 1.5 amps
• 3-wire zoned hydronic heating systems
• Heat pump systems

WHITE-RODGERS
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
www.white-rodgers.com

Printed in U.S.A.

PART NO. 37-6325B
0148

INSTALLATION
REMOVE OLD THERMOSTAT

Screw anchors

1. Shut off electricity at the main fuse box until installation is
complete. Ensure that electrical power is disconnected.
2. Remove the front cover of the old thermostat. With wires
still attached, remove wall plate from the wall. If the old
thermostat has a wall mounting plate, remove the thermostat and the wall mounting plate as an assembly.
3. Identify each wire attached to the old thermostat using
the labels enclosed with the new thermostat.
4. Disconnect the wires from old thermostat one at a time. DO
NOT LET WIRES FALL BACK INTO THE WALL.
5. Install new thermostat using the following procedures.
Mounting
Electric/Gas
holes
switch

ATTENTION!
This product does not contain mercury. However, this product
may replace a unit which contains mercury.

Mounting
holes

Do not open mercury cells. If a cell becomes damaged, do not
touch any spilled mercury. Wearing nonabsorbent gloves, take
up the spilled mercury with sand or other absorbent material and
place into a container which can be sealed. If a cell becomes
damaged, the unit should be discarded.

Figure 1. Thermostat Base

Mercury must not be discarded in household trash. When the
unit this product is replacing is to be discarded, place in a
suitable container and return to White-Rodgers at 9797 Reavis
Road, St. Louis, MO, 63123-5398 for proper disposal.

6. Push excess wire into wall and plug hole with a fire-resistant
material (such as fiberglass insulation) to prevent drafts
from affecting thermostat operation.

ELECTRIC HEAT OR SINGLE-STAGE
HEAT PUMP SYSTEMS

2 "AA" alkaline batteries are included in the thermostat at the
factory with a battery tag to prevent power drainage. You must
remove the battery tag to engage the batteries.

BATTERY LOCATION

This thermostat is configured from the factory to operate a fossil
fuel (gas, oil, etc.) and forced air system. It is configured
correctly for any system that DOES NOT require the thermostat
to energize the fan on a call for heat. If your system is an electric
heat system that REQUIRES the thermostat to turn on the fan
on a call for heat, locate the GAS/ELECTRIC switch on the
back of the thermostat (see fig. 1) and switch it to the ELECTRIC
position. This will allow the thermostat to energize the fan
immediately on a call for heat. If you are unsure if the heating
system requires the thermostat to control the fan, contact a
qualified heating and air conditioning service person.

If BATT is displayed, the batteries are low and should be
replaced with fresh "AA" Energizer® alkaline batteries. To
replace batteries, install the batteries along the top of the base
(see Fig. 1). The batteries must be installed with the positive (+)
end to the left.

HYDRONIC (HOT WATER OR STEAM)
HEATING SYSTEMS
This thermostat is set to operate properly with a forced-air
heating system. If you have a hydronic heating system (a
system that heats with hot water or steam), you must set the
thermostat to operate properly with your system. Change the
second option in the configuration menu to SL (see CONFIGURATION MENU, page 4).

ATTACH THERMOSTAT BASE TO WALL
1. Remove the packing material from the thermostat. Gently
pull the cover straight off the base. Forcing or prying on the
thermostat will cause damage to the unit. If necessary, move
the electric heat switch (see ELECTRIC HEAT SYSTEMS,
above).
2. Connect wires beneath terminal screws on base using
appropriate wiring schematic (see figs. 2 through 5).
3. Place base over hole in wall and mark mounting hole
locations on wall using base as a template.
4. Move base out of the way. Drill mounting holes.
5. Fasten base loosely to wall, as shown in fig. 1, using two
mounting screws. Place a level against bottom of base,
adjust until level, and then tighten screws. (Leveling is for
appearance only and will not affect thermostat operation.) If
you are using existing mounting holes, or if holes drilled are
too large and do not allow you to tighten base snugly, use
plastic screw anchors to secure subbase.

CHECK THERMOSTAT OPERATION
If at any time during testing your system does not operate
properly, contact a qualified service person.
Turn on power to the system.

Fan Operation
If your system does not have a G terminal connection, skip to
Heating System.
1. Move fan to ON position. The blower should begin to
operate.
2. Move fan switch to AUTO position. The blower should
stop immediately.

2

THERMOSTAT
W

RH

SYSTEM
Heating
System

Hot
24 VAC

120 VAC
Neutral

TRANSFORMER

Figure 2. Typical wiring diagram for
heating only, 2-wire, single transformer systems

THERMOSTAT
W

RH

SYSTEM
Heating
System
+
M.V. or 12 V. D.C.

-

TRANSFORMER

Figure 3. Typical wiring diagram for
heating only, 2-wire, single transformer systems
Thermostat

R

3-wire Series 10
Primary Control
(located at furnace)

W

B
W
R

Furnace
Add jumper wire
(not provided with thermostat)
Figure 4. Typical wiring diagram for
3-wire SERIES 10 heating systems

THERMOSTAT
G

W

RH

SYSTEM
Fan
Relay

Heating
System

Hot
24 VAC

120 VAC
Neutral

TRANSFORMER

Figure 5. Typical wiring diagram for
heat only, 3-wire, single transformer systems

Heating System
1. Move SYSTEM switch to HEAT position. If the heating
system has a standing pilot, be sure to light it.
2. Press
to adjust thermostat setting above room temperature. The heating system should begin to operate.
to adjust temperature setting below room tem3. Press
perature. The heating system should stop operating.

3

OPERATION
Before you begin programming your thermostat, you should be
familiar with its features and with the display and the location
and operation of the thermostat buttons. Your thermostat consists of two parts: the thermostat cover and the base. To
remove the cover, pull it straight out from the base. To replace
the cover, line up the cover with the base and press until the
cover snaps onto the base.

The Thermostat Buttons and Switches
1 Raises temperature setting.
2 Lowers temperature setting.
3 TIME button.
4 PRGM (program) button.
5 RUN (run program) button.
6 HOLD temperature button.
7 FAN switch (ON, AUTO).
8 SYSTEM switch (OFF, HEAT).

The Display

6

9 Indicates day of the week.
10 Flame icon ( ) is displayed when the SYSTEM switch is in
the HEAT position.
11 Displays BATT when the 2 "AA" batteries are low and
should be replaced. Only BATT and LO in the minutes field
are displayed when batteries are low.
12 Alternately displays current time and temperature. Displays LO in the minutes field when batteries are low.
13 The word HOLD is displayed when the thermostat is in the
HOLD mode. HOLD is displayed flashing when the thermostat is in a temporary HOLD Mode.
14 Displays currently programmed set temperature (this is
blank when SYSTEM switch is in the OFF position).
15 Displays FLTR when the system has run for the programmed filter time period as a reminder to change or clean
your air filter.

1) Select Temporary Hold Time - The thermostat can hold
any 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
Example:
1. You have selected 3:00 hours for the Temporary Hold
time period.
2. With the thermostat set to Heat, press HOLD for approximately five seconds until HOLD time (3:00 indicating 3 hours) appears as a setting reminder.
3. After releasing the button, HOLD on the display will
blink.
or
to set the temperature to your prefer4. Use
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.
2) Select FA or SL (Fast or Slow) Heating Cycle Rate - The
FA setting is frequently used for gas, oil or electric heat. The
SL setting produces a longer heating cycle which is normally 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 approximately 1.5°F.
3) Select Display Light ON or OFF - The display backlight
improves display contrast in low lighting conditions. Selecting d-l ON will keep the light on for a short period of time
after any key is pressed. Selecting d-l OFF will keep the
light off.

CONFIGURATION MENU
The configuration menu allows you to set certain thermostat
operating characteristics to your system or personal requirements.
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.
The configuration menu table summarizes the configuration
options. An explanation of each option follows.
Press HOLD to change to the next menu item or press TIME to
go backwards to the previous item in the menu. To exit the menu
and return to the program operation, press RUN. If no keys are
pressed within fifteen minutes, the thermostat will revert to
normal operation.

4

Configuration Menu
Step

Press Button(s)

1

PRGM
and RUN

2

HOLD*

Displayed (Factory Default)
HOLD
(0:00)

Press

or

to select:

0 to 8 hrs (in
15 minute increments)

COMMENTS
Select temporary Hold time
Select FA or SL (Fast or Slow) heating cycle rate

SL
(FA)

3

HOLD*

d-L
(ON)

OFF

Select display backlight OFF or ON

4

HOLD*

E
(ON)

OFF

Select Energy Management Recovery OFF or ON

5

HOLD*

Filter
(000)

0 to 1950 hours
(in 50 hour increments)

6

HOLD*

LOC
(OFF)

ON

7

HOLD*

0 HI
(0)

4 LO to
4 HI

8

HOLD*

(F)

C

9

RUN

Select filter replacement run time
Compressor lockout feature not applicable to this model
Select temperature display adjustment higher or lower
Select temperature display to F or C
Returns to normal operation

* Press HOLD to advance to next item or TIME to move backwards to previous item

OPERATING FEATURES

4) Select Energy Management Recovery OFF or ON Energy Management Recovery (EMR) causes the thermostat to start heating 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.
Example: You select EMR and have your heating programmed 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.
5) Select filter replacement run time - The thermostat will
display FLTR after a set time of operation. This is a
reminder to change or clean your air filter. This time can be
set from 0 to 1950 hours in 50 hour increments. A selection
of 000 will cancel this feature. When FLTR is displayed,
you can clear it by pressing HOLD and RUN at the same
time. This resets the timer and starts counting the hours
until the next filter change. Changing the time in the menu
also resets the timer.
6) Compressor Lockout - Feature not applicaple to this
model.
7) 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.
8) Select F° or C° Readout - Changes the display readout to
Centigrade or Fahrenheit as required.

Now that you are familiar with the thermostat buttons and
display, read the following information to learn about the many
features of the thermostat.
or
until the
• TEMPERATURE OVERRIDE — Press
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 automatically revert to the program.
• HOLD TEMPERATURE (BYPASSING THE PROGRAM)
The thermostat can hold any temperature within its range
for an indefinite period without reverting to the programmed
temperature. Momentarily press HOLD button. HOLD will
be displayed. Then choose the desired temperature by
or
. The thermostat will hold the room
pressing
temperature at the selected setting until you press RUN
button to start program operation again.
• CONFIGURATION MENU — Allows you to customize
certain thermostat options.

PROGRAMMING 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 your building, program the temperatures to
be cooler when the building is vacant or during periods of
low activity.

5

Enter Heating Program

Planning Your Program

1. Move the SYSTEM switch to HEAT.
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).

Look at the factory preprogrammed times and temperatures
shown in the sample schedule. If this program will suit your
needs, simply press the RUN button to begin running the factory
preset program.
If you want to change the preprogrammed times and temperatures, follow these steps.

MO TU WE TH FR

EXAMPLE:

Determine the time periods and temperatures for your weekday
and weekend programs. You must program four periods for
both the weekday and weekend program. However, you may
use the same heating temperatures for consecutive time periods. You can choose start times and heating 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 temperature.

This display window shows that for the 1st weekday period, the
start time is 6:00 AM, and 68° is the programmed temperature (this example reflects factory preprogramming).
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
temperature mode.
5. Press PRGM once. The currently programmed start time
and setpoint temperature for the 2nd heating program
period will appear.
6. Repeat steps 3 and 4 to select the start time and heating
temperature for the 2nd heating program period.
7. Repeat steps 3 through 5 for the 3rd and 4th heating
program periods. Weekday heating programs are now complete.
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.
8. Press PRGM once. “SU” (indicating Sunday program) will
appear in the display. Repeat steps 3 through 7 to complete
Saturday heating programming.
10.When you have completed entering your heating program,
press RUN.

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
Follow these steps to enter the heating program you have
selected.

Set Current Time and Day
1. Press TIME button once. The display will show the hour only.
EXAMPLE:

PM

2. Press and hold either
or
until you reach the correct
hour and AM/PM designation (AM begins at midnight; PM
begins at noon).
3. Press TIME once. The display window will show the minutes
only.
EXAMPLE:
4. Press and hold either
or
until you reach the correct
minutes.
5. Press TIME once. The display will show the day of the week.
6. Press

or

CHECK YOUR PROGRAMMING

until you reach the current day of the week.

Follow these steps to check your thermostat programming one
final time before beginning thermostat operation.

7. Press RUN once. The display will show the correct time and
room temperature alternately.

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).
3. Press RUN to begin program operation.

SAMPLE
Heating Schedule Plan (Factory Program)
WEEKDAY (5 DAY)
Period

Start
Time

1ST

SATURDAY (1 DAY)

SUNDAY (1 DAY)

Temperature

Start
Time

Temperature

Start
Time

Temperature

6:00 AM

70 F

6:00 AM

70 F

6:00 AM

70 F

2ND

8:00 AM

62 F

8:00 AM

62 F

8:00 AM

62 F

3RD

5:00 PM

70 F

5:00 PM

70 F

5:00 PM

70 F

4TH

10:00 PM

62 F

10:00 PM

62 F

10:00 PM

62 F

YOUR THERMOSTAT IS NOW COMPLETELY PROGRAMMED AND
READY TO PROVIDE MAXIMUM COMFORT AND EFFICIENCY!

Heating Schedule Plan
WEEKDAY (5 DAY)
Period

Start
Time

Temperature

SATURDAY (1 DAY)
Start
Time

Temperature

SUNDAY (1 DAY)
Start
Time

AM

Temperature

1ST
2ND
3RD
4TH

6

TROUBLESHOOTING
Symptom

Possible Cause

Corrective Action

No Heat/No Fan
(common problems)

1. Blown fuse or tripped circuit breaker.
2. Furnace power switch to OFF.
3. Furnace blower compartment door or
panel loose or not properly installed.
1. Pilot light not lit.
2. System Switch not set to Heat.

Replace fuse or reset breaker.
Turn switch to ON.
Replace door panel in proper position to engage
safety interlock or door switch.
Re-light pilot.
Set System Switch to Heat and raise setpoint
above room temperature.
Verify thermostat and system wires are securely
attached.
Many furnaces have safety devices that shut the
system down when a lock-out condition occurs.
If the heat works intermittently contact the furnace
manufacturer or local service person for assistance.
Diagnostic: Set System Switch to Heat and raise
the setpoint above room temperature. Within a few
seconds the thermostat should make a soft click
sound. This sound usually indicates the thermostat
is operating properly. If the thermostat does not
click, try the reset operation listed above. If the
thermostat does not click after being reset contact
your heating and cooling service person or place
of purchase for a replacement. If the thermostat
clicks, contact the furnace manufacturer or a
service person to verify the heating system is
operating correctly.
Check each wire connection to verify they are
not shorted or touching together. No bare wire
should stick out from under terminal screws. Try
resetting the thermostat as described below.
If the condition persists the manufacturer of
your system or service person can instruct you
on how to test the Heat/Cool system for correct
operation. If the system operates correctly,
replace the thermostat.
Item 2 in the Configuration Menu is the adjustment
that controls the cycle rate. If an acceptable cycle
rate is not achieved using the FA (Fast) or SL
(Slow) adjustment contact a local service person for
additional suggestions.
The thermometer can be adjusted +/- 4 degrees as
listed in item 7 of the Configuration Menu. No other
adjustment is possible.
Check current clock and program settings including
the AM or PM designations for each time period.
If a voltage spike or static discharge occurs use the
Reset Operation listed below.
Replace batteries and check heat/cool system for
proper operation. If a voltage spike or static discharge
occurs use the Reset Operation listed below.

No Heat

3. Loose connection to thermostat or system.
4. Furnace Lock-Out Condition. Heat may also
be intermittent.

5. Heating System requires service or
thermostat requires replacement.

Heat or Fan Runs Constantly

1. Possible short in wiring.
2. Possible short in thermostat.
3. Possible short in Heat/Cool/Fan system.
4. Fan Switch set to Fan On.

Furnace Cycles Too Fast or Too Slow
(narrow or wide temperature swing)

1. The location of the thermostat and/or the size
of the Heating System may be influencing the
cycle rate.

Thermostat Setting and Thermometer
Disagree

1. Thermostat thermometer setting requires
adjustment.

Thermostat Does Not Follow Program

1. AM or PM set incorrectly in program.
2. AM or PM set incorrectly on the clock.
3. Voltage spike or static discharge.

Blank Display and/or Keypad Not
Responding

1. Loss of power and dead batteries.
2. Voltage Spike or Static Discharge.

Batteries
For optimum performance, we recommend replacing batteries
once a year with fresh "AA" Energizer® alkaline batteries.

Reset Operation
If a voltage spike or static discharge blanks out the display or
causes erratic thermostat operation you can reset the thermo,
and TIME at the same time. This also
stat by pressing
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.

7

For additional product information, visit www.white-rodgers.com



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