White Rodgers Thermostat 1F86 444 User Manual

1F86-444  
Non-Programmable Electronic Digital Thermostat  
WHITE-RODGERS  
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 Digital Thermostat uses the technol-  
ogy of a solid-state microcomputer to provide precise tempera-  
ture control.  
°F/°C convertibility  
• Temperature range 45° to 90°F  
• Standard five terminals for single or two-transformer sys-  
tems  
Features:  
• Battery powered (3 “AA” Energizer® alkaline batteries in-  
cluded).  
• B and O terminals for single stage heat pumps or damper  
operation  
• Simultaneous heat and cool temperature storage  
• LCD continuously displays set point and room temperature  
PRECAUTIONS  
CAUTION  
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.  
!
To prevent electrical shock and/or equipment dam-  
age, disconnectelectricpowertosystem, atmainfuse  
or circuit breaker box, until installation is complete.  
Do not exceed the specification ratings.  
WARNING  
!
Allwiringmustconformtolocalandnationalelectricalcodesand  
ordinances.  
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:  
8 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)  
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/  
THERMAL DATA  
or vent dampers  
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  
Single-stage heat pump systems  
Millivolt systems  
DO NOT USE WITH:  
Multi-stage systems  
Systems exceeding 30 VAC and 1.5 amps  
3-wire zoned hydronic heating systems  
WHITE-RODGERS DIVISION  
EMERSON ELECTRIC CO.  
9797 REAVIS ROAD  
ST. LOUIS, MISSOURI 63123-5398  
PART NO. 37-5410C  
Replaces 37-5410B  
9805  
Printed in U.S.A.  
R
 
JUMPER  
WIRE  
THERMOSTAT  
Y
B
O
G
W
RC  
RH  
THERMOSTAT  
SYSTEM  
SYSTEM  
Hot  
Y
B
O
G
W
RC  
RH  
Cooling  
System Relay System  
Fan  
Heating  
24 VAC  
120 VAC  
NOTE  
Fan  
Relay  
Heating  
System  
RED jumper wire (provided  
with thermostat) must be  
connected between thermo-  
stat's RH and RC terminals  
for proper thermostat oper-  
ation with this system.  
Neutral  
Hot  
HEATING TRANSFORMER  
Hot  
24 VAC  
120 VAC  
Neutral  
24 VAC  
120 VAC  
TRANSFORMER  
Neutral  
Figure 5. Typical wiring diagram for  
heat only, 3-wire, single transformer systems  
COOLING TRANSFORMER  
Figure 8. Typical wiring diagram for  
heat/cool, 5-wire, two-transformer systems  
THERMOSTAT  
Y
B
O
G
W
RC  
RH  
SYSTEM  
JUMPER  
WIRE  
JUMPER  
WIRE  
THERMOSTAT  
SYSTEM  
Cooling  
System  
Fan  
Relay  
Y
B
O
G
W
RC RH  
Hot  
24 VAC  
120 VAC  
Neutral  
Changeover Compressor Fan  
Relay*  
Contactor Relay  
Hot  
24 VAC  
120 VAC  
Neutral  
Figure 6. Typical wiring diagram for  
cool only, 3-wire, single transformer systems  
* Changeover relay is energized when the  
system switch is in the COOL position  
TRANSFORMER  
Figure 9. Typical wiring diagram for  
heat pump with cool active changeover relay  
JUMPER  
WIRE  
THERMOSTAT  
Y
B
O
G
W
RC RH  
JUMPER  
WIRE  
JUMPER  
WIRE  
SYSTEM  
THERMOSTAT  
SYSTEM  
NOTE  
Y
B
O
G
W
RC RH  
Cooling  
System  
Fan  
Relay  
Heating  
System  
RED jumper wire (provided  
with thermostat) must be  
connected between thermo-  
stat's RH and RC terminals  
for proper thermostat oper-  
ation with this system.  
Hot  
Changeover Compressor Fan  
Relay*  
Contactor Relay  
24 VAC  
120 VAC  
Hot  
Neutral  
TRANSFORMER  
24 VAC  
120 VAC  
Neutral  
* Changeover Relay is energized when the  
system switch is in the HEAT position  
TRANSFORMER  
Figure 7. Typical wiring diagram for  
heat/cool, 4-wire, single transformer systems  
Figure 10. Typical wiring diagram for  
heat pump with heat active changeover relay  
Cooling System  
CHECK THERMOSTAT OPERATION  
This thermostat has a built-in short-term (5-minute) time delay.  
This feature is activated after the compressor shuts down and  
the setpoint is changed within the 5-minute period. During this  
5-minute period, COOL will flash on the display indicating that  
the thermostat has locked out the compressor to allow head  
pressure to stabilize. This thermostat does not sense AC power  
loss and therefore does not activate the short term compressor  
protection feature when power is restored.  
If at any time during testing your system does not operate  
properly, contact a qualified serviceperson.  
Fan Operation  
If your system does not have a G terminal connection, skip to  
Heating System.  
1. Turn on power to the system.  
2. Move FAN switch to ON position. The blower should begin  
CAUTION  
!
to operate.  
Topreventcompressorand/orpropertydamage, ifthe  
outdoor temperature is below 50°F, DO NOT operate  
the cooling system.  
3. Move FAN switch to AUTO position. The blower should stop  
immediately.  
Heating System  
1. Move SYSTEM switch to COOL position.  
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 below room tempera-  
ture.Theblowershouldcomeonimmediatelyonhighspeed,  
followed by cold air circulation  
2. Press  
to adjust thermostat setting above room tempera-  
ture. The heating system should begin to operate.  
3. Press  
toadjusttemperaturesettingaboveroomtempera-  
3. Press  
toadjusttemperaturesettingbelowroomtempera-  
ture. The cooling system should stop operating.  
ture. The heating system should stop operating.  
3
 
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
WHITE-RODGERS  
THE THERMOSTAT BASE  
FAN ON  
AUTO  
COOL OFF HEAT  
The Thermostat Buttons and Switches  
Other than  
and  
, the following buttons and switches are  
located behind the door on the bottom of the thermostat cover  
(see fig. 11). Pull the door down to open it.  
3
4
(Red arrow)  
(Blue arrow)  
Raises temperature setting.  
Lowers temperature setting.  
1
2
3
4
5
HEAT  
6
COOL  
FAN switch (ON, AUTO).  
BATTERY  
SYSTEM switch (COOL, OFF, HEAT).  
7
8
6
5
The Display  
Figure 11. Thermostat display, buttons, and switches  
HEAT is displayed when the SYSTEM switch is in the  
5
HEATposition. COOL isdisplayed(non-flashing)whenthe  
SYSTEM switch is in the COOL position. COOL is dis-  
played (flashing) when the compressor is in lockout mode.  
OFF is displayed when the SYSTEM switch is in the OFF  
position.  
°F/°C CONVERTIBILITY— After ten seconds of no key  
activity, when the thermostat is in the temperature display  
adjustment mode, or 30 seconds after power up, pressing  
and  
atthesametimewillswitchtheLCDtemperature  
display between Fahrenheit and Celsius.  
Displays current temperature.  
6
7
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° range) as follows:  
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).  
8
1. Press  
applying power.  
2. Press or  
and  
at the same time within 30 seconds of  
OPERATING FEATURES  
to adjust the displayed temperature to  
Now that you are familiar with the thermostat buttons and  
display, read the following information to learn about the fea-  
tures of the thermostat.  
your desired setting.  
3. After setting your desired temperature, do not press any  
buttons for ten seconds. The thermostat will continue  
operating at the changed temperature setting.  
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.  
SETTING THE THERMOSTAT  
This thermostat is very easy to operate. Set the SYSTEM button  
LOW BATTERY INDICATOR — If the 3 “AA” alkaline  
batteries are low and should be replaced, the display will be  
blank except for the word BATTERY. When the batteries  
are low, pressing any button will cause the display to  
operate for ten seconds. After ten seconds, the display will  
be blank except for the word BATTERY. When the duration  
of a low battery condition exceeds four weeks, the setpoint  
is altered by 10 degrees to signal that the batteries must be  
replaced.  
to either HEAT or COOL, then press  
or  
until the tempera-  
ture you want to maintain is shown on the right side of the  
display. If you want to turn the system off, just move the  
SYSTEM switch to OFF.  
The FAN switch controls the fan operation. When the FAN  
switch is set to AUTO, the fan will cycle with the furnace or air  
conditioner. When the FAN switch is set to ON, the fan will run  
continuously, regardless of SYSTEM switch position.  
 

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