White Rodgers 1F86EZ 0251 Thermostat User Manual

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Model: 1F86EZ-0251  
Emerson Blue Easy Set  
1H/1C  
Non-Programmable Thermostat with 3 Temperature Pre-Sets  
Home, Sleep and Away  
Installation Instructions and User Guide  
Message to Homeowner  
Congratulations on choosing the Emerson Blue Easy Set  
Thermostat. The Easy Set is designed to be the easiest  
thermostat you have ever used. This thermostat features  
Home, Sleep, and Away temperature pre-sets. Just press  
the button and go. Included with the easy set is the same  
temperature accuracy and reliability you expect from all the  
Emerson Blue thermostats.  
3 Simple Pre-Sets  
Just Press the Button and Go!  
This thermostat is intended for use with a low voltage NEC  
Class II 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.  
Table of Contents  
Get to know your thermostat.......................................2  
Thermostat buttons and switches ...............................2  
Display.........................................................................2  
Batteries ......................................................................2  
Do not exceed the specification ratings.  
All wiring must conform to local and national electrical codes  
and ordinances.  
Using your thermostat .................................................3  
Home, Sleep and Away temperature pre-sets............3  
Sleep Timer option ......................................................3  
Change Filter reminder option ....................................3  
Cool Savings option ....................................................3  
This control is a precision instrument, and should be handled  
carefully. Rough handling or distorting components could  
cause the control to malfunction.  
Installation .....................................................................4  
Remove the old thermostat.........................................4  
Install the new thermostat ...........................................4  
Set switches ................................................................4  
Check thermostat operation........................................4  
Select configuration options........................................5  
Configuration menu.....................................................5  
Troubleshooting Guide ................................................6  
Technical Data...............................................................7  
Wiring diagrams ..........................................................7  
Thermostat application guide......................................8  
Specifications ..............................................................8  
PART NO. 37-7201C  
Replaces 37-7201B  
1049  
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Get to know your thermostat  
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 and switches.  
Set at  
Home  
1
2
The Thermostat Buttons and Switches  
1
Raises temperature setting.  
2
Lowers temperature setting.  
3
SYSTEM  
Easy Temperature pre-sets (Home, Sleep, Away).  
4
SYSTEM switch (COOL, OFF, HEAT).  
FAN switch (ON, AUTO).  
5
4
5
3
The Display  
6
Indicates desired temperature. This is blank when  
system switch is in the OFF position. Desired  
temperature is displayed (flashing) if the thermostat is in  
lockout mode.  
“Save” indicates the Cool Savings feature is enabled  
in the configuration menu. “Save” flashing indicates  
Cool Savings feature is operating and saving energy.  
“Save” will also flash for 3 seconds after changing the  
temperature to indicate that a pre-set can be saved.  
Set at  
6
12  
7
Home Sleep  
Away  
7
10  
9
8
11  
8
Indicates system mode. Heat icon ( ) is displayed when  
the SYSTEM switch is in the HEAT position. Heat icon( )  
is displayed flashing when thermostat is calling for heat.  
Cool icon ( ) is displayed when the SYSTEM switch is in  
the COOL position. Cool icon ( ) is displayed (flashing) if  
the thermostat is calling for cool.  
10  
“Home”,“Sleep”,“Awayindicates the easy temperature  
pre-set is enabled.  
11  
“Change Filter” is displayed when the system has run  
for the programmed filter time period as a reminder to  
change or clean your air filter.  
12  
” indicates power level of batteries. “Change  
9
Displays current temperature.  
indicates batteries should be replaced.  
Batteries  
CAUTION  
If the home is going to be unoccupied for an extended  
period (over 3 months) and is displayed, the  
batteries should be replaced before leaving. When  
less than two months of battery life remain, the  
setpoint temperature will change by 10 degrees (10  
degrees cooler in Heat / 10 degrees warmer in Cool)  
to alert you to change the batteries before they fail. If  
the temperature change occurs, the normal setpoint  
can be manually reset. However, the temperature will  
change by 10 degrees within two days if the batteries  
are not replaced.  
!
Two “AA” alkaline batteries are included with your thermostat.  
Prior to use, open the battery door and remove the battery  
tag. We recommend replacing batteries every 2 years, for  
best results, use new premium brand alkaline batteries such  
as Duracell® or Energizer®. When battery power remaining is  
approximately half, the  
will be displayed.  
Change  
Indicates batteries are low  
and should be replaced  
BATTERY LOCATION  
“AA” Alkaline Batteries  
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.  
Thermostatinstallationandallcomponentsofthesystem  
shall conform to Class II (current limited) circuits per the  
NEC code. Failure to do so could cause a fire hazard.  
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Using your thermostat  
Change Home, Sleep and Away  
Temperature Pre-sets  
Home, Sleep and Away Temperature  
Pre-Sets  
1. Move SYSTEM switch to HEAT position.  
You can set your (Home, Sleep, Away) temperatures for use  
when you get home, go to sleep, or leave home. Then, just  
press the button you want and go.  
2. Using the  
or  
button, set the desired temperature.  
3. Press and hold the Home, Sleep, or Away button for 3  
seconds. The display will go blank (except for the battery  
icon and heat/cool icon) and back on again indicating that  
the thermostat has saved your pre-set.  
Favorite Temperatures are set at the factory as indicated in  
the following table.You can use pre-sets or change to different  
temperature pre-sets.  
4. Repeat the process for the remaining Pre-sets to be  
changed.  
Factory Pre-set Temperatures  
HEATING  
70o F  
COOLING  
75o F  
5. Move SYSTEM switch to COOL to Pre-set Temperatures  
for cooling.  
62o F  
78o F  
SLEEP  
Use Home, Sleep and Away Temperature Pre-Sets  
62o F  
83o F  
1. Press the Home, Sleep, or Away button. The display  
will show the icon for the button pressed and display the  
temperature setting.  
Your Pre-set Temperatures  
HEATING COOLING  
2. The thermostat will maintain the selected pre-set  
temperature until you change it by pressing the  
button or selecting another Pre-set Temperature.  
or  
SLEEP  
Sleep Timer Option  
The sleep timer will automatically change the thermostat from the Sleep to Home temperature after the number of hours set in  
the configuration menu. The Sleep timer default is 8 hours and can be changed to a setting between 1 to 12 hours.  
Example:You have selected 8 hours for the Sleep timer in the configuration menu. Press the Sleep button, the thermostat will  
maintain the sleep temperature for 8 hours. After 8 hours the thermostat will go back to the Home temperature. The Sleep timer  
will be activated each time the sleep button is pressed.  
Change Filter Reminder Option  
The thermostat can display a reminder when it is time to change the air filter on your heating and cooling system. The Change  
Filter will automatically display after the number of hours set in the configuration menu. The change filter reminder time default  
is 200 hours and can be changed to a setting of 25 to 1975 hours; 200 hours is approximately 3 months.  
Example:You have selected 250 hours for the change filter reminder. The thermostat will display change filter after 250 it has  
counted down 250 hours. When “Change Filter” is displayed, press the  
or  
button to clear the display and restart the  
timer.  
Cool Savings™ Option  
With Cool Savings enabled, the thermostat will make small adjustments to the desired temperature during periods of high  
demand to reduce cooling system running time and save energy. When the cooling system has been running for more than  
20 minutes, humidity in the home will be lower and a higher temperature will feel comfortable. After 20 minutes of run time,  
the thermostat will start increasing the desired temperature in steps of less than one degree as the system continues to run.  
These adjustments will eventually cause the system to satisfy the thermostat and turn the system off to reduce the energy  
consumption. When the Cool Savings feature is active and making adjustments, the display will flash “Save”. The amount of  
adjustments to the desired temperature is dependent on the Cool Savings value that is set, 1 being the least adjustment and 6  
being the most adjustment. With this feature set to OFF, no change will occur when the cooling system is continuously running  
during the periods of high demand. Periods of high demand will normally occur during the late afternoon and early evening on  
the hottest days of the summer.  
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Installation  
Battery  
Door  
Remove the Old Thermostat  
1. Turn off power to the heating and cooling system.  
2. Remove the front cover of the old thermostat, this usually  
pulls off.  
3. Loosen the screws that hold the thermostat to the wall.  
4. Identify each wire attached to the old thermostat.  
Mounting  
Hole  
Mounting  
Hole  
5. Disconnect the wires from old thermostat one at a time. DO  
NOT LET WIRES FALL BACK INTO THE WALL.  
Install the New Thermostat  
1. Open the battery door and detach the new thermostat  
O/B  
Switch  
cover from the base.  
2. With the base flush against the wall, mark mounting hole  
locations on wall.  
Opening  
for wires  
Gas/Elec  
Switch  
3. Move base out of the way and drill mounting holes.  
4. Push wires through wire opening.  
Figure 1.Thermostat Base  
5. Position the base on the wall again and screw the mounting  
screws into the wall anchors.  
Set Switches  
6. Connect each wire coming from the wall to its corresponding  
terminal as shown in Fig. 2 thru 4 on page 7.  
Gas / Elec Switch  
If your system is a heat pump, the GAS/ELEC Switch must  
be set to ELEC (see Fig. 1) If your system is a single stage,  
the switch must be set to GAS. The switch setting must agree  
with the system configuration selected in the configuration  
menu.  
Press down  
G
Y
W
O/B Terminal Switch Selection  
O/B  
Insert  
Wire  
The O/B switch on this thermostat is factory set to the “O”  
position. This will accommodate the majority of heat pump  
applications, which require the changeover relay to be  
energized in COOL. If the thermostat you are replacing or the  
heat pump being installed with this thermostat requires a “B”  
terminal, to energize the changeover relay in HEAT, the O/B  
switch must be moved to the “B” position.  
C
R
Wire Terminal Block  
NOTE  
Wires will not be connected to all terminals of the terminal  
block.  
2. Move fan switch to ON position. The blower should begin  
Check Thermostat Operation  
to operate.  
Heating System  
3. Move fan switch to AUTO position. The blower should stop  
1. Move SYSTEM switch to HEAT position. If the heating  
immediately.  
system has a standing pilot, be sure to light it.  
Cooling System  
2. Press  
to adjust thermostat setting to 1° above room  
temperature. The heating system should begin to operate.  
1. Move SYSTEM switch to COOL position.  
3. Press  
to adjust temperature setting below room  
2. Press  
to adjust thermostat setting below room  
temperature. The heating system should stop operating.  
temperature. The blower should come on immediately on  
high speed, followed by cold air circulation. However, if the  
setpoint temperature is flashing, the compressor lockout  
feature is operating (see Configuration menu, item 5).  
Fan Operation  
If your system does not have a G terminal connection, skip to  
Heating System.  
3. Press  
to adjust temperature setting above room  
temperature. The cooling system should stop operating.  
1. Move SYSTEM switch to OFF position.  
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Installation  
Select Configuration Options  
The configuration menu allows you to set certain thermostat operating characteristics to your system or personal requirements.  
Enter Menu  
Menu Navigation  
SYSTEM  
Press  
ome  
and hold  
for 3 seconds  
Press  
for next. Press  
to go back  
Configuration Menu  
Menu Screen  
Displayed  
(Factory Default)  
Press  
to select options  
or  
Number  
01  
(SS)  
HP  
Select Single Stage (SS) or  
Heat Pump (HP) for a single compressor  
02  
03  
04  
05  
06  
Sleep  
(OFF)  
On  
1 to 12  
On  
Select Sleep Timer On or OFF  
If selected OFF, skip to menu screen 04  
h
(8)  
Select 1 to 12 hours for Sleep Timer On.  
See Sleep Timer section on page 3  
CS  
(OFF)  
Select Cool Savings Feature On or OFF  
If selected OFF, skip to menu screen 06  
CS  
(3)  
1 to 6  
FA, SL  
Select 1 to 6 for Cool Savings Feature On  
See Cool Savings section on page 3  
Select Adjustable Anticipation, cycle rate for Heat  
See table below  
CR  
(ME)  
07  
08  
FA, SL  
On  
Select Adjustable Anticipation, cycle rate for Cool  
See table below  
CR  
(ME)  
CL  
(OFF)  
Select Compressor Lockout OFF or On. When selected On,  
the thermostat will wait 5 minutes before turning the  
compressor on.  
09  
L
(On)  
OFF  
Select Display Light On of OFF. When selected On and the “C”  
terminal is connected, the backlight will stay on continuously.  
When OFF the backlight will come on for a short time when any  
key is pressed.  
10  
11  
12  
13  
Room Temp  
(0)  
4 LO to  
4 HI  
oC  
Select room temperature display for 4o higher or 4o lower than  
the actual temperature  
Select oF or oC Display (temperature displayed in Fahrenheit or  
Celsius)  
oF  
Change Filter  
(OFF)  
On  
Select filter maintenance indicator OFF or On.  
If selected OFF, item B will be skipped  
Change Filter  
(200 h)  
25 to 1975  
Select 25 to 1975 hours for Change Filter reminder  
See Change Filter reminder section on page 3  
To exit the menu: Set the system switch to Cool or Heat. If  
no keys are pressed within fifteen minutes, the thermostat will  
revert to normal operation.  
Select Cycle Rate – The cycle rate can be adjusted to keep  
the heat or cool on longer or shorter to match the temperature  
response of the home with your heating and cooling system.  
MODE  
Fast  
Medium  
Slow  
(FA)  
(ME)  
(SL)  
SS Heat  
0.6oF  
1.2oF  
1.2oF  
0.8oF  
1.2oF  
1.7oF  
1.7oF  
SS Cool  
HP Heat & Cool  
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Troubleshooting  
Reset Operation  
If a voltage spike or static discharge blanks out the display  
or causes erratic thermostat operation, you may need to  
reset the thermostat. To reset, the System Switch must be  
for approximately 10 seconds until the display goes blank. If  
the thermostat has power, has been reset and still does not  
function correctly contact your heating/cooling service person  
or place of purchase.  
in Cool or Heat. Simultaneously press  
and  
buttons  
Symptom  
Possible Cause  
Corrective Action  
No Heat/No Cool/No Fan  
common problems)  
1. Blown fuse or tripped circuit breaker.  
2. Furnace power switch to OFF.  
1. Replace fuse or reset breaker.  
2. Turn switch to ON.  
3. Furnace blower compartment door or  
panel loose or not properly installed.  
3. Replace door panel in proper position to engage safety  
interlock or door switch.  
No Heat  
1. System Switch not set to Heat.  
1. Set System Switch to Heat and raise setpoint above  
room temperature.  
2. Loose connection to thermostat or  
system  
2. Verify thermostat and system wires are securely  
attached.  
3. Heating System requires service or  
thermostat requires replacement.  
3. Diagnostic: Set System Switch to Heat and raise  
the setpoint above room temperature. Within a five  
minutes 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.  
No Cool  
1. System Switch not set to Cool.  
1. Set System Switch to Cool and lower setpoint below  
room temperature.  
2. Loose connection to thermostat or  
system.  
2. Verify thermostat and system wires are securely  
attached.  
3. Cooling System requires service or  
thermostat requires replacement  
3. Same procedures as diagnostic for No Heat condition  
except set the thermostat to Cool and lower the  
setpoint below the room temperature. There may be up  
to a five minute delay before the thermostat clicks in  
Cooling if the compressor lock-out option is selected in  
the configuration menu (Item 6).  
Heat, Cool or Fan Runs  
Constantly  
1. Possible short in wiring.  
2. Possible short in thermostat.  
3. Possible short in Heat/Cool/Fan  
system.  
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 above. 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.  
4. Fan Switch set to Fan On.  
Furnace Cycles Too Fast 1. The location of the thermostat and/or  
Item 4 (CR Heat) or 5 (CR Cool) 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.  
or Too Slow / Cooling  
Cycles Too Fast or Too  
Slow (narrow or wide  
temperature swing)  
the size of the Heating or Cooling  
System may be influencing the cycle  
rate.  
Thermostat Setting and  
Thermometer Disagree  
1. Thermostat thermometer setting  
requires adjustment.  
The thermometer can be adjusted +/- degrees as listed in  
item 8 of the Configuration Menu (see page 5). No other  
adjustment is possible.  
Blank Display and/or  
Keypad Not Responding  
1. Voltage Spike or Static Discharge.  
If a voltage spike or static discharge occurs use the Reset  
Operation listed above.  
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Technical Data  
Figure 2.Typical wiring diagram for single transformer single stage systems  
Optional Jumper for  
Single Stage Heat Pump  
THERMOSTAT  
SYSTEM  
R
O/B  
Y
G
W
C
Changeover  
Relay*  
Fan  
Relay  
Optional  
Compressor  
Contactor  
Heat Relay  
Hot  
24 VAC  
120 VAC  
Neutral  
* Changeover Relay is energized in COOL when O/B switch is in the “O” position  
Changeover Relay is energized in HEAT when O/B switch is in the “B” position  
TRANSFORMER  
(Class II Current Limited)  
Figure 3.Typical wiring diagram for two transformer single stage systems with NO safety circuits  
NOTE  
If safety circuits are in only one of  
the systems, remove the transformer  
of the system with NO safety circuits.  
Optional Jumper for  
Single Stage Heat Pump  
THERMOSTAT  
O/B  
Y
G
W
C
R
SYSTEM  
CUT AND  
TAPE OFF!  
Changeover  
Relay*  
Fan  
Relay  
Limit or  
Safety  
Switches  
Optional  
HOT  
120 VAC  
NEUTRAL  
24 VAC  
Compressor  
Contactor  
Heat Relay  
Hot  
24 VAC  
120 VAC  
Neutral  
TWO COMMONS MUST  
BE JUMPERED TOGETHER!  
TRANSFORMER  
(Class II Current Limited)  
* Changeover Relay is energized in COOL when O/B switch is in the “O” position  
Changeover Relay is energized in HEAT when O/B switch is in the “B” position  
Figure 4.Typical wiring diagram for two transformer single stage systems with safety circuits in BOTH systems  
NOTE  
Polarity must be observed. If the HOT side of the  
second transformer is jumpered to the COMMON side  
of the first transformer a short will be made. Damage  
to equipment will occur when power is restored.  
Optional Jumper for  
Single Stage Heat Pump  
THERMOSTAT  
O/B  
Y
G
W
C
R
SYSTEM  
Limit or  
Safety  
Limit or  
Safety  
Switches  
HOT  
Switches  
24 VAC  
120 VAC  
Changeover  
Relay*  
Fan  
Relay  
NEUTRAL  
Optional  
24 VAC  
Auxiliary  
Heating  
Transformer  
(Class II  
NOTE  
ACCESSORY  
RELAY N.O.  
CONTACT  
The accessory relay scheme  
is required when safety  
circuits exist in both systems.  
Compressor  
Contactor  
Heat  
Relay  
Current Limited)  
COMMON  
TWO COMMONS MUST  
BE JUMPERED TOGETHER!  
Limit or  
Limit or  
Safety  
Switches  
Safety  
HOT  
Switches  
24 VAC  
120 VAC  
COMMON  
NEUTRAL  
* Changeover Relay is energized in COOL when O/B switch is in the “O” position  
Changeover Relay is energized in HEAT when O/B switch is in the “B” position  
Heat Pump Transformer  
(Class II Current Limited)  
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Technical Data  
THERMOSTAT APPLICATION GUIDE  
ATTENTION!  
This product does not contain mercury. However, this product  
may replace a unit which contains mercury.  
Thermostat  
Configuration  
Options  
Maximum  
Stages  
Heat/Cool  
Thermostat  
Applications  
Do not open mercury cells. If a cell becomes damaged, do  
not touch any spilled mercury. Wearing nonabsorbent gloves,  
take up the spilled mercury and place into a container which  
can be sealed. If a cell becomes damaged, the unit should be  
discarded.  
Single Stage 1  
No Heat Pump  
(SS)  
Gas, Oil, Electric, Heat  
Only, Cool Only or Heat  
/ Cool Systems  
1/1  
1/1  
Heat Pump 1  
Single Stage  
Compressor Heat  
Pump (HP)  
Single Stage Compres-  
sor Heat Pump Systems  
- with no Aux. Heat  
Mercury must not be discarded in household trash. When the  
unit this product is replacing is to be discarded, place in a  
to send the product containing mercury.  
Specifications  
Electrical Rating:  
Battery Power..................................................... mV to 30 VAC, 50/60 Hz or DC  
Input-Hardwire.................................................... 20 to 30 VAC  
Terminal Load............................................................ 1.0 A per terminal, 1.5A maximum all terminals combined  
Setpoint Range.......................................................... 45° to 90°F (7° to 32°C)  
Differential (Single Stage).......................................... Heat 0.6°F; Cool 1.2°F (adjustable)  
Differential (Heat Pump)............................................ Heat 1.2°F; Cool 1.2°F (adjustable)  
Operating Ambient..................................................... 32° to +105°F (0° to +41°C)  
Operating Humidity.................................................... 90% non-condensing max.  
Shipping Temperature Range.................................... -40° to +150°F (-40° to +65°C)  
Dimensions Thermostat............................................. 3-3/4” H x 4-3/4” W x 1-1/2” D  
Homeowner Help Line: 1-800-284-2925  
White-Rodgers is a division  
of Emerson Electric Co.  
The Emerson logo is a  
trademark and service mark  
of Emerson Electric Co.  

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