White Rodgers 1F83-71 User manual

Printed in U.S.A.
DESCRIPTION
1F83-71
Non-Programmable Electronic
Digital Automatic Changeover Multi-stage Thermostat
INSTALLATION AND
OPERATION INSTRUCTIONS
PART NO. 37-6126B
Replaces 37-6126A
0004
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.
PRECAUTIONS
SPECIFICATIONS
CAUTION
!
WARNING
!
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
WHITE-RODGERS
Your new White-Rodgers Digital Multi-stage Thermostat uses
thetechnologyofasolid-statemicrocomputertoprovideprecise
time/temperature control.
Features:
• Simultaneous heat and cool setpoint storage
• Optional Cterminal (dual power option)
• Optional Band Oterminals
• Preprogrammed temperature control
• LCD continuously displays setpoint and room temperature
•°F/°C convertibility
• Temperature range 45°to 90°F
• Two-stage heat/two-stage cool
• Armchair programming capability
Thisthermostatisintendedforusewitha24-voltsystem;donot
use this thermostat with a millivolt or line voltage system. If in
doubtaboutwhetheryourwiringismillivolt,line,orlowvoltage,
have it inspected by a qualified heating and air conditioning
contractor or electrician.
Do not exceed the specification ratings.
Allwiringmustconformtolocalandnationalelectricalcodesand
ordinances.
This control is a precision instrument, and should be handled
carefully.Roughhandlingordistortingcomponentscouldcause
the control to malfunction.
Topreventelectricalshockand/orequipmentdamage
disconnect electric power to system at main fuse or
circuit breaker box until installation is complete.
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.
ELECTRICAL DATA
Electrical Rating:
20 to 30 VAC 50/60 Hz. or D.C.
0.05 to 1.5 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:
-40°F to 150°F
APPLICATIONS
For use with:
• Heat/cool systems with up to two stages heat, two
stages cool
DO NOT USE WITH:
• Millivolt systems
• Systems exceeding 30 VAC and 2.5 amps
• 3-wire zoned hydronic heating systems

2
REMOVE OLD THERMOSTAT
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
thermostathasawallmountingplate,removethethermostat
and the wall mounting plate as an assembly.
3. Identifyeachwireattachedtotheoldthermostatusingthe
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.
PRE-INSTALLATION SET-UP
1. Remove the packing material from the thermostat.
2. This thermostat is configured from the factory to operate a
heat/cool,fossilfuel(gas,oil, etc.),forcedairsystemwithup
to 2 stages of heat and 2 stages of cool. It is configured
correctlyforanysystemthatDOESNOTrequirethethermo-
stat to energize the fan on a call for heat.
If your system is an electric heat or heat-pump 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
immediatelyonacallforheat.Ifyouareunsureiftheheating/
cooling system requires the thermostat to control the fan,
contact a qualified heating and air conditioning service
person.
3. One jumper is located on the back of the thermostat, so that
you may customize the thermostat to meet your individual
preference (see fig. 1). In most applications, the factory
jumper settings provide the most comfortable and conve-
nient thermostat operation.
Jumper wire W905 determines how fast the system cycles
on and off, based on temperature change. As shipped from
the factory, the thermostat will maintain a very consistent
room temperature, usually within 1°F of the thermostat
setting. To achieve a slower on and off cycle, providing a
slightly wider temperature span, cut and separate jumper
wire W905.
INSTALLING THE THERMOSTAT
1. Gently remove the cover by pulling it straight off the base.
Forcing or prying on the unit may cause damage to the unit.
2. Remove the battery tab. With the batteries installed, the
Armchair Programming feature allows you to program the
thermostat before installing it on the wall.
3. Pullwiresthroughthe hole in the thermostat base and place
the base over the hole in the wall. Mark mounting hole
locations on the wall using the base as a template.
4. Move the base out of the way. Drill mounting holes.
5. Fasten the base loosely to the wall, as shown in fig. 2, using
twomountingscrews.Placealevelagainstthebottomofthe
base, adjust until level, and then tighten the screws. (Level-
ing is for appearance only and will not affect thermostat
operation.)If you are using existing mounting holes, or if the
holesdrilledaretoolargeanddonotallowyouto tighten the
base snugly, use plastic screw anchors to secure the base.
INSTALLATION
Figure 1. Back of thermostat base
W905
CUT FOR
LONGER
CYCLES
GAS ELECTRIC
Figure 2. Thermostat base
Mounting
holes
Screw anchors
Alkaline batteries (3 “AA”–
install “+” ends to the left)
C
W2
R
GYY2
B
O
W
Reset
button
NOTE
6. Check that the system is turned off. Connect the wires
beneaththeterminalscrewsonthebaseusing theappropri-
ate wiring diagram (see figs. 3 through 5).
7. Pushexcesswireintowallandplugholewithafire-resistant
material(suchasfiberglassinsulation)topreventdraftsfrom
affecting thermostat operation.
CHECK THERMOSTAT OPERATION
If at any time during testing, your system does not operate
properly, contact a qualified serviceperson.
Fan Operation
1. Turn on power to the system.
2. Press SYSTEM button until the system is OFF.
3. MoveFANswitchtoON.Theblowershouldbegintooperate.
4. MoveFANswitchtoAUTOposition.The blowershouldstop
within a short period of time.
(Instructions continue on page 4.)

3
NOTENOTE
The following wiring diagrams show typical terminal identifica-
tion and wiring. For proper installation, refer to the original
manufacturer’s instructions.
Relay contacts shown are thermostatically operated.
C* R
Y2OB
Energized
in HEAT
Compressor
Contactor
Stage 1
Heat
Relay
Stage 1
Heat
Relay
Stage 2
Thermostat
Control
Circuit
24 VAC 120 VAC
Hot
Neutral
THERMOSTAT
SYSTEM
Y W W2
Figure 3. Typical wiring diagram for single transformer systems
Fan
Relay
G
TRANSFORMER
Compressor
Contactor
Stage 2
Energized
in COOL
* The 24 Volt neutral connection
to terminal Con the thermostat
is not required if you replace
the batteries once a year with
fresh “AA” Energizer
®
alkaline
batteries.
C* R
Y2
Compressor
Contactor
Stage 1
Heat
Relay
Stage 1
Heat
Relay
Stage 2
Thermostat
Control
Circuit
24 VAC 120 VAC
Hot
Neutral
THERMOSTAT
SYSTEM
Y W W2
Figure 4. Typical wiring diagram for two-transformer systems with NO safety circuits
Fan
Relay
G
TRANSFORMER
Compressor
Contactor
Stage 2
24 VAC120 VAC
Hot
Neutral
TRANSFORMER
TWO COMMONS MUST
BE JUMPERED TOGETHER!
CUT AND
TAPE OFF!
* The 24 Volt neutral connection
to terminal Con the thermostat
is not required if you replace
the batteries once a year with
fresh “AA” Energizer®alkaline
batteries.
O
Energized
in COOL
B
Energized
in HEAT
C* R
Y2
Compressor
Contactor
Stage 1
Heat
Relay
Stage 1
Heat
Relay
Stage 2
Thermostat
Control
Circuit
Limit or
Safety
Switches
Limit or
Safety
Switches
Limit or
Safety
Switches
Limit or
Safety
Switches
24 VAC 120 VAC
Hot
Common
Common
Neutral
THERMOSTAT
SYSTEM
Y W W2
Figure 5. Typical wiring diagram for two-transformer systems with safety circuits in BOTH systems
Fan
Relay
G
HEATING
TRANSFORMER
Compressor
Contactor
Stage 2
24 VAC 120 VAC Hot
Neutral
COOLING
TRANSFORMER
TWO COMMONS MUST
BE JUMPERED TOGETHER!
24 VAC
Accessory
Relay N.O.
Contact
* The 24 Volt neutral connection
to terminal Con the thermostat
is not required if you replace
the batteries once a year with
fresh “AA” Energizer
®
alkaline
batteries.
O
Energized
in COOL
B
Energized
in HEAT

4
Heating System
1. Press SYSTEM button to turn thermostat to HEAT.
2. Press toadjustthermostatsettingto90°andholdforfive
seconds. After you release the button, both stages of the
heatingsystem should begin to operatewithin five seconds.
3. Press toadjusttemperaturesettingbelowroomtempera-
ture. The auxiliary heating system will stop immediately and
the first stage will stop within three to four minutes.
Cooling System
Topreventcompressorand/orpropertydamage,ifthe
outdoor temperature is below 50°F, DO NOT operate
the cooling system.
1. Press SYSTEM button to turn thermostat to COOL.
2. Press toadjustthermostatsettingto45°andholdforfive
seconds. After you release the button, the blower should
come on immediately on high speed, followed by cold air
circulation. Both stages of the cooling system should begin
to operate (if you have a two-stage cooling system).
Ifthefanisrunningbutthecompressorisnotrunningandthe
word COOL is flashing, the compressor lockout feature is
operating (see Lockout Bypass Option to temporarily
override the compressor lockout feature during testing).
3. Press toadjusttemperaturesettingaboveroomtempera-
ture. The cooling system should stop operating.
During normal operation, the second stage of heat or cool may
take15to30minutestoturnon.The delay varies depending on
theperformanceofthefirststage.Typicallythesecondstagewill
comeonsoonerinmoresevereweather,whileinmilderweather
it will take longer. There is no adjustment to this feature, as it is
designed to maximize both comfort and efficiency.
CAUTION
!
NOTE
LOCKOUT BYPASS OPTION
FOR QUALIFIED SERVICE TECHNICIANS’ USE
ONLY.OPERATORSSHOULDNOTUSETHISFEA-
TURE DUE TO POSSIBILITY OF EQUIPMENT OR
PROPERTY DAMAGE, OR PERSONAL INJURY.
COMPRESSOR SHORT TERM
CYCLE PROTECTION
During normal operation, this thermostat has a built-in
shortterm(5-minute)timedelay.Duringthis5-minute
period, the thermostat will lock out the compressor to
allow head pressure to stabilize. If you want to over-
ride this feature while testing thermostat operation,
simply press and buttons at the same time.
DO NOT USE THE LOCKOUT BYPASS OPTION
UNLESSTHECOMPRESSOROILHEATERSHAVE
BEEN OPERATIONAL FOR 6 HOURS AND THE
SYSTEMHASNOTBEEN OPERATIONAL FORAT
LEAST 5 MINUTES.

5
OPERATION
Figure 6. Thermostat display, buttons, and switches
CL 1+2
OFF
HT 1+2
5
57
6 8
2
1
3 4
LOCK
COOL-OFF-HEAT-AUTO
AUTO
FAN ONSYSTEM
9
BATTERY
Before you begin using your thermostat, you should be familiar
with its features and with the display and the location and
operationofthethermostatbuttons.Yourthermostatconsistsof
two parts: the thermostat cover and the base. To remove the
cover, gently pull it straight out from the base. To replace the
cover, line up the cover with the base and press gently until the
cover snaps onto the base.
THE THERMOSTAT BASE
Other than and , the following buttons and switches are
located behind the door on the bottom of the thermostat cover
(see fig. 6). Pull the door down to open it.
The Thermostat Buttons and Switches
1(Red arrow) Raises temperature setting.
2(Blue arrow) Lowers temperature setting.
3SYSTEM button (COOL, OFF, HEAT, AUTO).
4FAN switch (ON, AUTO).
The Display
5HTisdisplayedwhentheSYSTEMbuttonhasbeenpressed
to put the thermostat in the HEAT mode. CL is displayed
when the SYSTEM button has been pressed to put the
thermostat in the COOL mode. CL is displayed (flashing)
whenthecompressorisinlockoutmode.AUTOisdisplayed
when the SYSTEM button has been pressed to put the
thermostatintheautomaticchangeover(AUTO)mode.1+2
indicates the number of stages the thermostat is calling for.
6Displays current temperature.
7LOCK is displayed when keypad lockout has been acti-
vated.
8Displays current setpoint temperature (this is blank when
SYSTEMbuttonhasbeenpressedtoturnthesystemOFF).
9LO BATTERY is displayed when approximately 70% of
battery life has been exhausted.
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.
•TEMPERATURE SETPOINT — Press or until the
display shows the temperature you want.
•SIMULTANEOUS HEATING/COOLING SETPOINT
STORAGE—You canenterbothyourheatingandcooling
setpoints at the same time.
•AUTOMATIC CHANGEOVER —If you have a heating/
coolingsystem,youcansetthethermostattoautomatically
switch from heat to cool as needed to maintain setpoint
temperature. To select this mode, press SYSTEM button
until AUTO is displayed along with HEAT or COOL.
In AUTO mode, pressing and at the same time will
change the displayed setpoint temperature to the setpoint
of the other mode (HEAT or COOL). This allows you to
change both the HEAT and COOL setpoints, if desired.
•TOTAL KEYPAD LOCKOUT — This security feature al-
lows you to lock out the thermostat buttons to prevent
unauthorized tampering. To select this feature, press
andSYSTEMbuttonatthesametimeandholduntilLOCK
is displayed. To unlock the thermostat, press and
SYSTEMbuttons at the same time until LOCK is no longer
displayed.
•°F/°C CONVERTIBILITY — Press and SYSTEM but-
tons until the temperature display is in Celsius. To display
Fahrenheit, repeat the process.
•TEMPERATURE DISPLAY ADJUSTMENT — Your new
thermostathasbeenaccuratelysetinourfactory.However,
if you wish, you may adjust your new thermostat tempera-
ture display. This can be accomplished (within a ±4°F
range) as follows:
1. Press and hold and SYSTEM buttons at the same
timeuntiltheactualtemperatureonlyisdisplayed(about
5 seconds).
2. Press or to adjust the displayed temperature to
your desired setting. (To reset the temperature display
back to the actual sensed temperature, press and
SYSTEM buttons at the same time again.)
3. PressSYSTEMtoresumenormalthermostatoperation.
TROUBLESHOOTING
If your thermostat’s display is frozen or displaying incorrectly,
the thermostat may have been affected by static discharge or
voltagevariations.Ifthishappens,presstheRESETbutton(see
fig. 2, page 2 for the location of the button). If pressing the
RESETbuttondoesnotcorrecttheproblem,contactaqualified
service technician.
For optimum performance, we recommend replacing batteries
once a year with fresh “AA” Energizer®alkaline batteries.