White Rodgers 1F83 51 Thermostat User Manual

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1F83-51  
Non-Programmable Electronic  
Digital Multi-Stage Thermostat  
INSTALLATION AND  
WHITE-RODGERS  
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 Digital Multi-stage Thermostat uses  
thetechnologyofasolid-statemicrocomputertoprovideprecise  
temperature control.  
• LCD continuously displays room temperature  
°F/°C convertibility  
• Temperature range 45° to 90°F  
• Two-stage heat/two-stage cool  
Features:  
• Simultaneous heat and cool program storage  
• Optional C terminal (dual power option)  
PRECAUTIONS  
CAUTION  
Thisthermostatisintendedforusewitha24-voltsystem;donot  
use this thermostat with a millivolt or 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.  
!
To prevent electrical shock and/or equipment  
damage, disconnect electric power to system at  
main fuse or circuit breaker box until installation  
is complete.  
Do not exceed the specification ratings.  
Allwiringmustconformtolocalandnationalelectricalcodesand  
ordinances.  
WARNING  
!
Do not use on circuits exceeding specified voltage.  
Higher voltage will damage control and could cause  
shock or fire hazard.  
This control is a precision instrument, and should be handled  
carefully. Roughhandlingordistortingcomponentscouldcause  
the control to malfunction.  
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.  
SPECIFICATIONS  
ELECTRICAL DATA  
APPLICATIONS  
Electrical Rating:  
For use with:  
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)  
• Heat/cool systems with up to two stages heat, two  
stages cool  
DO NOT USE WITH:  
THERMAL DATA  
• Millivolt systems  
Setpoint Temperature Range:  
45°F to 90°F (7°C to 32°C)  
• Systems exceeding 30 VAC and 1.5 amps  
• 3-wire zoned hydronic heating systems  
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  
WHITE-RODGERS DIVISION  
EMERSON ELECTRIC CO.  
9797 REAVIS ROAD  
PART NO. 37-5916C  
Printed in U.S.A.  
Replaces 37-5916B  
0005  
ST. LOUIS, MISSOURI 63123-5398  
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INSTALLATION  
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.  
W901  
CUT FOR  
LONGER CYCLES  
3. Identifyeachwireattachedtotheoldthermostatusingthe  
labels enclosed with the new thermostat.  
4. Disconnect the wires from old thermostat one at a time. DO  
GAS ELECTRIC  
NOT LET WIRES FALL BACK INTO THE WALL.  
5. Install new thermostat using the following procedures.  
PRE-INSTALLATION SET-UP  
Figure 1. Back of thermostat base  
1. Remove the packing material from the thermostat.  
Alkaline batteries (3 “AA”–  
install “+” ends to the left)  
2. This thermostat is configured from the factory to operate a  
heat/cool, fossil fuel (gas, oil, etc.), forced air system with up  
to 2 stages of heat and 2 stages of cool. It is configured  
correctly for any system that DOES NOT require the thermo-  
stat to energize the fan on a call for heat.  
Screw anchors  
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.  
C
W
W2  
R
Reset  
button  
G
Y
Y2  
3. Ajumperislocatedonthebackofthethermostat, sothatyou  
may customize the thermostat to meet your individual pref-  
erence (see fig. 1). In most applications, the factory jumper  
setting provides the most comfortable and convenient ther-  
mostat operation.  
Mounting  
holes  
Figure 2. Thermostat base  
Jumper wire W901 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 W901.  
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. Pull wires through the 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.  
BATTERY LOCATION  
3. Move the base out of the way. Drill mounting holes.  
This thermostat requires 3 “AA” alkaline batteries to operate.  
Batteries are installed in the thermostat at the factory with a  
battery tag to prevent power drainage. You must remove the  
battery tag to engage the batteries and provide power to the  
thermostat. After batteries are engaged, thermostat display and  
features may be viewed before installing thermostat.  
4. Fasten the base loosely to the wall, as shown in fig. 2, using  
two mounting screws. Place a level against the bottom of the  
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  
holes drilled are too large and do not allow you to tighten the  
base snugly, use plastic screw anchors to secure the base.  
If LOW BATTERYis 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. 2). The batteries must be installed with the positive (+)  
ends to the left.  
5. Check that the SYSTEM switch is in the OFF position.  
Connect the wires beneath the terminal screws on the base  
using the appropriate wiring diagram (see figs. 3 through 5).  
6. Push excess wire into wall and plug hole with a fire-resistant  
material(suchasfiberglassinsulation)topreventdraftsfrom  
affecting thermostat operation.  
(Instructions continue on page 4.)  
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NOTE  
NOTE  
The following wiring diagrams show typical terminal identifica- Relay contacts shown are thermostatically operated.  
tion and wiring. For proper installation, refer to the original  
manufacturer's instructions.  
* The 24 Volt neutral connection  
to terminal C on the thermostat  
is not required if you replace  
Thermostat  
the batteries once a year with  
Control  
fresh “AA” Energizer® alkaline  
Circuit  
batteries.  
THERMOSTAT  
W2  
C*  
R
Y
Y2  
G
W
SYSTEM  
Heat  
Relay  
Compressor  
Contactor  
Stage 2  
Stage 1  
Hot  
24 VAC  
120 VAC  
Neutral  
Compressor  
Contactor  
Stage 1  
Heat  
Relay  
Fan  
Relay  
TRANSFORMER  
Stage 2  
Figure 3. Typical wiring diagram for single transformer systems  
* The 24 Volt neutral connection  
to terminal C on the thermostat  
is not required if you replace  
the batteries once a year with  
fresh “AA” Energizer® alkaline  
batteries.  
Thermostat  
Control  
Circuit  
THERMOSTAT  
SYSTEM  
CUT AND  
TAPE OFF!  
W2  
C*  
R
Y
Y2  
G
W
Hot  
Heat  
Relay  
Compressor  
Contactor  
Stage 2  
120 VAC  
24 VAC  
Stage 1  
Hot  
Neutral  
24 VAC  
120 VAC  
TRANSFORMER  
Compressor  
Contactor  
Stage 1  
Heat  
Relay  
Neutral  
TRANSFORMER  
Fan  
Relay  
Stage 2  
TWO COMMONS MUST  
BE JUMPERED TOGETHER!  
Figure 4. Typical wiring diagram for two-transformer systems with NO safety circuits  
* The 24 Volt neutral connection  
Thermostat  
to terminal C on the thermostat  
Control  
is not required if you replace  
Circuit  
the batteries once a year with  
fresh “AA” Energizer® alkaline  
THERMOSTAT  
SYSTEM  
batteries.  
W2  
C*  
R
Y
Y2  
G
W
Heat  
Relay  
Compressor  
Contactor  
Stage 2  
Limit or  
Safety  
Switches  
Stage 1  
Limit or  
Safety  
Switches  
Hot  
24 VAC  
120 VAC  
Neutral  
Compressor  
Contactor  
Stage 1  
Heat  
Relay  
Fan  
24 VAC  
Accessory  
Relay N.O.  
Contact  
HEATING  
TRANSFORMER  
Relay  
Stage 2  
Common  
Limit or  
Safety  
Switches  
Limit or  
Safety  
Switches  
Hot  
TWO COMMONS MUST  
BE JUMPERED TOGETHER!  
24 VAC  
120 VAC  
Common  
Neutral  
COOLING  
TRANSFORMER  
Figure 5. Typical wiring diagram for two-transformer systems with safety circuits in BOTH systems  
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If the fan is running but the compressor is not running and  
the display has CLflashing, the compressor lockout feature  
is operating (see Lockout Bypass Option to temporarily  
override the compressor lockout feature during testing).  
CHECK THERMOSTAT OPERATION  
NOTE  
If at any time during testing, your system does not operate  
properly, contact a qualified serviceperson.  
3. Press  
toadjusttemperaturesettingaboveroomtempera-  
ture. The cooling system should stop operating.  
Fan Operation  
1. Turn on power to the system.  
LOCKOUT BYPASS OPTION  
2. Move SYSTEM switch to OFF position.  
3. MoveFANswitchtoON.Theblowershouldbegintooperate.  
FOR QUALIFIED SERVICE TECHNICIANS’ USE  
ONLY.OPERATORSSHOULDNOTUSETHISFEA-  
TURE DUE TO POSSIBILITY OF EQUIPMENT OR  
PROPERTY DAMAGE, OR PERSONAL INJURY.  
4. Move FAN switch to AUTO position. The blower should stop  
within a short period of time.  
Heating System  
1. Move SYSTEM switch to HEAT position  
COMPRESSOR SHORT TERM  
CYCLE PROTECTION  
2. Press  
toadjustthermostatsettingto90° andholdforfive  
seconds. Both stages of the heating system should begin to  
operate within five seconds.  
During normal operation, this thermostat has a built-in  
short term (5-minute) time delay. During this 5-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,  
3. Press  
toadjusttemperaturesettingbelowroomtempera-  
ture. The auxiliary heating system will stop immediately and  
the first stage will stop within three to four minutes.  
simply press  
and  
buttons at the same time with  
Cooling System  
the SYSTEM switch in the OFF position.  
CAUTION  
!
DO NOT USE THE LOCKOUT BYPASS OPTION  
UNLESSTHECOMPRESSOROILHEATERSHAVE  
BEEN OPERATIONAL FOR 6 HOURS AND THE  
SYSTEM HAS NOT BEEN OPERATIONAL FOR AT  
LEAST 5 MINUTES.  
Topreventcompressorand/orpropertydamage, ifthe  
outdoor temperature is below 50°F, DO NOT operate  
the cooling system.  
1. Move SYSTEM switch to COOL position.  
2. Press  
toadjustthermostatsettingto45° andholdforfive  
seconds. 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).  
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OPERATION  
Before you begin using 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, 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.  
1
2
THE THERMOSTAT BASE  
FAN ON  
AUTO  
SYSTEM  
Other than  
and  
, the following buttons and switches are  
COOL-OFF-HEAT  
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  
3
4
(Red arrow) Raises temperature setting.  
(Blue arrow) Lowers temperature setting.  
FAN switch (ON, AUTO).  
1
2
3
4
5
HEAT 1+2  
OFF  
6
COOL 1+2  
LOW BATTERY  
SYSTEM switch (COOL, OFF, HEAT).  
7
8
5
The Display  
Figure 6. Thermostat display, buttons, and switches  
5
HT is displayed when the SYSTEM switch is in the HEAT  
position. When calling for the first stage of heat, HT1 will  
display. When calling for the second stage of heat, HT1+2  
will display. CL is displayed (non-flashing) when the SYS-  
TEM switch is in the COOL position. When calling for the  
first stage of cool, CL1 will display. When calling for the  
second stage of cool, CL1+2 will display. CL is displayed  
(flashing) when the compressor is in lockout mode.  
°F/°C CONVERTIBILITY— When the thermostat is in the  
temperature display adjustment mode, or 30 seconds after  
power up, pressing  
and  
at the same time will switch  
the LCD temperature display between Fahrenheit and  
Celsius.  
TEMPERATURE DISPLAY ADJUSTMENT — Your new  
thermostathasbeenaccuratelysetinourfactory.However,  
if you wish, you may adjust your new thermostat tempera-  
ture display to match your old thermostat. This can be  
accomplished (within a ±4°F range) as follows:  
Displays current temperature.  
6
7
LOW BATTERY is displayed when the 3 "AA" batteries are  
low and should be replaced. Nothing else will be displayed.  
Displays current setpoint temperature. This is blank when  
SYSTEM switch is in the OFF position.  
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1. Move the SYSTEM switch to OFF position.  
2. Press and hold  
and move the SYSTEM switch to  
HEAT or COOL. Release  
.
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.  
3. Press  
or  
to adjust the displayed temperature to  
your desired setting. After setting your desired tempera-  
ture, do not press any buttons for ten seconds. The  
thermostat will continue operating at the changed tem-  
perature setting.  
TEMPERATURE SETPOINT — Press  
or  
until the  
display shows the temperature you want.  
4. Pressing the hardware RESET button (see Fig. 2) will  
return the offset to zero.  
SIMULTANEOUSHEATING/COOLINGSTORAGEYou  
can enter both your heating and cooling setpoints at the  
same time. There is no need to reset the thermostat at the  
beginning of each season.  
LOW BATTERY INDICATOR — If the 3 “AA” alkaline  
batteries are low and should be replaced, the display will be  
blank except for the word LOW BATTERY. When the  
batteries are low, pressing any button will cause the display  
to operate for ten seconds. After ten seconds, the display  
willbeblankexceptforthewordLOWBATTERY.Whenthe  
duration of a low battery condition exceeds four weeks, the  
setpoint is altered by 10 degrees to signal that the batteries  
must be replaced.  
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  
RESET button does not correct the problem, contact a qualified  
service technician.  
For optimum performance, we recommend replacing batteries  
once a year with fresh “AA” Energizer® alkaline batteries.  
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