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

www.white-rodgers.com

www.emersonclimate.com

Replaces 37-7201B

1049

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

The Thermostat Buttons and Switches

Raises temperature setting.

Lowers temperature setting.

SYSTEM

Easy Temperature pre-sets (Home, Sleep, Away).

SYSTEM switch (COOL, OFF, HEAT).

FAN switch (ON, AUTO).

The Display

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

Home Sleep

Away

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.

“Home”,“Sleep”,“Away”indicates the easy temperature

pre-set is enabled.

“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.

“

” indicates power level of batteries. “Change

”

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.

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

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

70^oF

COOLING

75^oF

5. Move SYSTEM switch to COOL to Pre-set Temperatures

for cooling.

62^oF

78^oF

SLEEP

Use Home, Sleep and Away Temperature Pre-Sets

62^oF

83^oF

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.

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

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.

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

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.

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.

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

Number

(SS)

Select Single Stage (SS) or

Heat Pump (HP) for a single compressor

Sleep

(OFF)

1 to 12

Select Sleep Timer On or OFF

If selected OFF, skip to menu screen 04

(8)

Select 1 to 12 hours for Sleep Timer On.

See Sleep Timer section on page 3

(OFF)

Select Cool Savings Feature On or OFF

If selected OFF, skip to menu screen 06

(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

(ME)

FA, SL

Select Adjustable Anticipation, cycle rate for Cool

See table below

(ME)

(OFF)

Select Compressor Lockout OFF or On. When selected On,

the thermostat will wait 5 minutes before turning the

compressor on.

(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.

Room Temp

(0)

4 LO to

4 HI

^oC

Select room temperature display for 4^ohigher or 4^olower than

the actual temperature

Select ^oF or ^oC Display (temperature displayed in Fahrenheit or

Celsius)

^oF

Change Filter

(OFF)

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

0.6^oF

1.2^oF

0.8^oF

1.2^oF

1.7^oF

SS Cool

HP Heat & Cool

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.

Technical Data

Figure 2.Typical wiring diagram for single transformer single stage systems

Optional Jumper for

Single Stage Heat Pump

THERMOSTAT

SYSTEM

O/B

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

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

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

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)

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

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

suitable container.Refer to www.white-rodgers.com for location

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.

www.white-rodgers.com

www.emersonclimate.com

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