1. Homeowner Support Hotline:
Education
Central
Engage, Apply, Retain
Emerson 12” Series
Thermostats
Homeowner Support Hotline:
Note: This module covers common elements. Refer to Specification Sheet or Installation Instructions for detailed information.

2. Emerson 12” Thermostats Selecting the Right Thermostat for the Job
Application Coverage by System
Model
Stages Heat / Cool by System
Applications
Programming Options
Power Source
Single Stage (SS) Multi-Stage (MS) Heat Pump (HP1 or HP2) Universal (All)
Model Number
Single Stage
Multi-Stage
Heat Pump
Gas/Oil/Electric
3-Wire Zone Value
Millivolt Compatible
Humidity Control
Program Days per Week
Program Periods per Day
Hardwire Battery Power Assist
Universal
1F98EZ-1441 Easy Install
1/1
2/2
4/2 ✓
H,D
7, Ø
4, Ø H
1F Humidity
7, 5+1+1, Ø
4, 2, Ø
B,H,PA
1F Commercial
2, Ø 1F
3/2
B,H
Single Stage / Heat Pump 1F
2/1

3. 12” Series Thermostats Agenda
Applications
Wiring
Configuration
Programming
Featured Products In This Module
1F98EZ-1441
4 Wire Universal 1F
Humidity Thermostat, Universal 1F
Touchscreen, Universal

4. Look at the Box for Detailed Information
Staging By System Type
Programming Options
Applications
Part Number
Terminal Identification

5. 12” Series Thermostat Overview
Touchscreen offers more features, delivering a new level of comfort to your customers
A 4 Wire Universal Solution for High Efficiency Upgrades Without Running Additional Wires
Large, Easy to Read Display
Optional Humidity Control
Highest Accuracy gives you the Greatest Comfort
Free Homeowner Programming Hotline in English, Spanish and French
Dual Fuel Capable with Smart Fuel™ Logic Program or Optional Wired Sensors

6. 12” Series Specification Sheets Contain Detailed Information

7. Conventional or Heat Pump with Aux
12” Series Applications
Application
Stages
Programming
Feature
Type
Universal
4/2
7, 0
Easy Install 4 Wire
1F98EZ-1441
7, 5+1+1, 0
Humidity 1F
Commercial 1F
3/2
12" Touchscreen 1F
Conventional or Heat Pump with Aux
2/1 1F

8. 12” Series Terminal Designations
Conv. Or HP
Universal
Terminal
Description 1F 1F 1F 1F
1F98EZ-1441
Programming
7, 5+1+1, 0
7, 0
W/E
Stages
2/1
3/2
4/2
1st. Stage Heat (SS1, MS2) or Aux Heat 1st stage (HP) ● W2
2nd Stage Heat (MS2) or Aux Heat 2nd Stage (HP) Y
1st Stage Compressor (SS1, MS2 or HP1) Y2
2nd Stage Compressor (MS2 or HP2) G
Fan Relay
RH and RC
24 VAC Hot (TH) Separate C
24 VAC Common (TR)
O and B
Reversing Valve Separate
O/B
Reversing Valve Combined L
Diagnostics
+, S, -
Remote Sensor Terminals 6
Wet Heat, 3 Wire Zone Valve
Hum, Dehum(2)
Humidity Terminals A1
Economizer
Note:
Touchscreen Single Stage
Touchscreen Mutli-Stage
Commercial
Humidity
Wireless

9. 12” Series Heat Pump / Dual Fuel Staging Detail
Stage+
HP1
Heat Mode
HP2
HP1 w/2 stage Dual Fuel
1st
Y1 Compressor
2nd
W/E Aux, stage 1
Y2 Compressor
3rd
W2 Aux, stage 2
W/E 1st Stage Gas
4th
W2 2nd Stage Gas
Remember the Easy way? Y’s = Compressors or Pumps……..W’s = Conventional stages 1 and 2.
Dual fuel option de-energizes any compressor stage when auxiliary heat is energized

10. Power Stealing Assist Extends Battery Life (1F95 -1291 and 1280 Only)
Power Stealing Assist extends battery life significantly by drawing “stealing” small amounts of voltage from the heat (W) or cool (Y) circuit. Power Stealing Switches on the back of the thermostat should be left in the “ON" position for most systems.
On a small number of heating or cooling systems with high impedance electronic modules you may observe one of the following conditions:
The furnace , draft inducer or fan run or continue running when the thermostat is not calling for operation. Switch the “W” dip switch to OFF.
If the condition continues to occur switch the “Y” dip switch to OFF to disable Power Stealing Assist completely and operate the thermostat on batteries only.
If the Power Stealing Assist method is not compatible with your system both switches can be turned off and the thermostat will operate normally.

11. 12” Series Wiring for Conventional Systems - AC /Furnace (No Heat Pump)
#6 Terminal is for a power closed 3 wire zone valve
Single Stage (SS) in Red
Multi-Stage (MS) add Orange
Shipped set up for Multi-Stage. The only difference between Multi-Stage and Single Stage are the additional 2nd stage calls for heat and cool. This configuration accommodates the majority of systems. Also has a #6 terminal (power closed) for 3-wire zone valves….very popular in certain areas with hydronic zone valves. Most thermostats won’t work a 3-wire zone system…comes standard on this one.…
* Common connection requited for the 1F98EZ, diagnostic indicator, and outdoor sensor options. Optional on others.
** For two transformer systems remove the jumper

12. 12” Series Wiring for Heat Pump
Single Stage Heat Pump (HP1) in Green
Multi-Stage Heat Pump (HP2) add Orange
Dual fuel option de-energizes when auxiliary heat is energized
* Common connection requited for the 1F98EZ, diagnostic indicator, and outdoor sensor options. Optional on others.
** For two transformer systems remove the jumper
*** If your system does not provide an E connection, jumper W2 to W/E to use the Auxiliary Heat in the Emergency Mode

13. Programming Touchpad's
12” Series Navigation
Actual Room Temperature
Day of Week
Time of Day or Humidity
Desired Temperature
Temperature or
Configuration
Adjustment Buttons
Heat/Cool/Off
Battery Status
= Full Charge
= Half Capacity
= Replace Batteries
Fan Auto/On
Configuration and
Programming Touchpad's

14. 12” Series Entering System Configuration
Most technical service calls are the result of improper system configuration
1. Press the Menu touchpad
2. Press and hold the Installer Config touchpad for five seconds

15. 12” Application Specific versus Customization—Don’t Go Overboard!
MENU ITEM
DISPLAY (DEFAULT)
OPTIONS
COMMENTS
System Configuration
(MS 2)
SS1, MS2, HP1, HP2
Installer Set
Electric Heat Fan
(GAS)
GAS, ELE
1. Choose System
2. Select Fan Function
Items 1 and 2 are what make the thermostat and system work together…Most other menu items except dual fuel are a matter of personal preference…
Just keep in mind, the first step is to tell the thermostat what the primary heating source is; fossil fuel or a heat pump?
The second step tells the thermostat if the equipment or the thermostat control the fan operation. Fossil fuel systems have a fan control built into the equipment to turn on the fan on a call for heating. Heat Pumps and Electric furnaces require the thermostat to turn the fan on during a call for heating.
Once you configure for the system just press “RUN” and you are ready to operate the system. You will see the word “RUN” right above the Fan button at this point. Any of the other configuration options are a matter of choice.
Options are great but know the difference between application, options, and confusion to the homeowner.

16. Press Δ or  to Select From Listed Options
1F Series Configuration Example Refer To Installation Instructions For Other Models Denotes Critical to the Application
Menu # P
N-P
Displayed (Default)
Press Δ or  to Select From Listed Options
Comments 1
SS1
HP1, SS1
Selects Single Stage or Heat Pump (1 compressor), on the
1202 and 1202H add MS2 and HP2 to choices 2
(ELE)
GAS
GAS setting: furnace controls blower ELE setting: thermostat controls blower 3
Days, (7) P
5+1+1 or 0
Programs per week . (0 = non-programmable) 4 NA
PS (4)
Program periods per day 5
Cool-Off- Heat-Auto
Cool-Off-Heat, Off-Heat, Cool-Off
System switch configuration in single stage 6
E (On)
OFF
Selects Energy Management Recovery, E (with programming option on) 7
Cr, Heat (FA) SL
Selects Adjustable Anticipation, cycle rate, Heat 8
Cr, Cool (FA)
Selects Adjustable Anticipation, cycle rate, Cool 9
Cr/AU, Emer (FA)
Selects Adjustable Anticipation, cycle rate auxiliary, (This item is only to appear if HP1 is selected above) 10
CL (OFF) On
Selects Compressor Lockout

17. Press Δ or  to Select From Listed Options
1F Series Configuration Refer To Installation Instructions For Other Models
Menu # P
N-P
Displayed (Default)
Press Δ or  to Select From Listed Options
Comments 11 9
dL (On)
OFF
Selects Continuous Display backlight & intensity 12 10
dL (LO) HI
Selects Backlight Intensity 13
-4, LO to 4, HI
Selects Adjustable Ambient Temperature Display 14 °F °C
Selects °F/°C Display (temperature units in Fahrenheit or Celsius) . 15
b (On)
Selects audible Beeper On/Off 16
dS (On)
Selects Daylight Saving Time calculation 17
AS, Heat (On)
Selects Automatic Schedule for comfort temperature Programming, heat mode 18
AS, Cool (On)
Selects Automatic Schedule for comfort temperature Programming, cool mode 19
CS, (OFF) Cool Savings
Selects Cool Saving Feature & amount

18. Press Δ or  to Select From Listed Options
1F Series Configuration Refer To Installation Instructions For Other Models
Menu # P
N-P
Displayed (Default)
Press Δ or  to Select From Listed Options
Comments 20 18
HL,
Heat (99)
62-98
TEMPERATURE LIMIT, HEAT (max heat set point) 21 19
LL,
Cool (45)
46-82
TEMPERATURE LIMIT, COOL (min cool set point) 22
OFF Keypad Lockout
L (total)
P (partial)
Selects Keypad Lockout
Selects Keypad Lockout Combination
(active only if keypad Lockout is selected) . 23
FS, Heat (On)
OFF
Fast second stage of heat (not available if SS1 is selected ) 24
FS, Cool (On)
Off
Fast second stage of cool (not available if SS1 of HP1 is selected) 25
Remote (OFF) On
Remote temperature sensor, enable/disable
In, Remote
Outdoor Remote
Remote temperature sensor (Indoor/Outdoor)
LS (On)
Local temp . Sensor enable/disable
(only when Indoor Remote is selected On) . 26
dF (5)
5-50
Selects Dual Fuel Feature & set point
Cd (60)
0-99
Selects Compressor delay in seconds
(only when dF is selected >5) 27
Change Filter (OFF)
Selects Change filter feature
200 Hours
Change filter, duration hours
(in increments of 25 hours)

19. Optional Configuration Options
MENU ITEM
DISPLAY DEFAULT
OPTIONS
COMMENTS
EMR
E (On)
Off
Programming Mode Only
Heat Cycle Rate
Cr HEAT (ME)
SL, FA
SS1, MS2 only
Heat Pump Configuration Cycle Rate
Cr Heat /
A/C (ME)
Heat Pump
HP1, HP2 only
A/C Cycle Rate
Cr A/C (ME)
Auxiliary Heat Cycle
Cr AUX Heat (FA) SL
Now that you have configured the thermostats in steps 1 and 2 for the application you can customize the thermostat to meet the needs of the customer. While we won’t go through all the options we will highlight some of the most used options.
EMR in step 3 is an acronym for “Energy Management Recovery”. What it looks at is the room temperature during a setback period and also looks forward to the next program time and temp. The thermostat sees the number of degrees it needs to make up and starts early based on that number.
Tech Stuff: For non-heat pump systems it allows approximately 5 minutes for each degree it needs to make up.
For heat pump systems it allows approximately 15 minutes for each degree it needs to make up.
Heat Pumps produce a lower temperature heat than fossil fuels systems so they take longer to recover to set point temperature after a set back period.. The heat pump is started early and locks out the Aux heat until about the last 30 minutes of the recovery period. Neat feature – it allows economical setback and recovery with a heat pump system – conventional wisdom says don’t setback a heat pump because the Aux. will eat up your savings.
Guess what? You can setback a pump…and recover….economically.

20. Optional Configuration Options
MENU ITEM
DISPLAY DEFAULT
OPTIONS
COMMENTS
Compressor Lock-out
CL (OFF) On
Installer Set
System Configuration
(Heat, A/C, Off)
Heat, Off, Fan/
Heat, Off/ A/C
Off
Compressor Optimization
CO (OFF)
LCD Display Light
dL(ON)
OFF
Temperature Display Adj.
Hi (0)
1 to 5 Hi or LO
°F/°C Selection
(°F) °C
Some other options you may wish to consider are:
Step 10, Compressor Optimization. CO gives you a Fan On / Fan off delay in cooling. This assures the air is cold when the blower comes on and also scavenges cooling from the coil after the cycle ends by running the blower for an extra 20 seconds.

21. Optional Configuration Options
MENU ITEM
DISPLAY (DEFAULT)
OPTIONS
COMMENTS
Dual Fuel / Electric
dF (0)
1 – 9
Compressor Delay
Cd (60)
00 – 99
O/B Output Configuration
On A/C (O)
On Heat (B)
Application Specific Set By Installer (HP1 or HP)
Step 21, Dual fuel is for heat pumps with GAS or OIL Aux. Heat. Dual Fuel turns off the pump(s) when Aux comes on so the system does not trip on excessive pressure. Eliminates the need for a plenum mounted fossil fuel kit. 1-9 sets it up for Dual Fuel. Higher number pulls auxiliary in a little sooner. Lower number delays auxiliary slightly. We suggest 5 to start with and adjust as desired. An easy way to remember where to set the values ---up for comfort (tight temp control) and down for energy savings. Remember, if you set the value to zero you disable this option.
Step 22, Compressor Delay allows the Aux. Heat and the heat pump to run at the same time…up to 99 seconds. This gives the Aux. a chance to heat up before the pump turns off. This will stop you getting a “slug” of cold air when staging.

22. 1F95-1291 Humidity Thermostat Configuration, Additional Menu Items
SS1 MS2
HP1 HP2
Displayed (Default)
Press Δ or  to Select From Listed Options
Comments 38 l
(OFF) Hd On
Selects Humidity Display alternate with time. 39
Humidity 00 (Room Humidity)
-20 Lo to 20 HI
Selects Humidity Display adjustment. 40
(OFF) HR
LO, HI
Selects Auto Humidity reduction. 41
(OFF) AH
H, C, A
Selects Automatic Humidification. 42
(OFF) CH
Selects Cycle Humidifier. 43
OC (0)
od, OFF
Selects Optimum Comfort or Optimum Dehumidification or Off. 44
(OFF) Change UV Lamp
Selects Change UV Lamp feature. 45
350 Days
Change UV Lamp duration days. 46
(OFF) Change Pad
Selects Change Humidifier Pad feature. 47
100 Hrs
Change Humidifier Pad duration hours.

23. 12” Series Reset to Factory Defaults
Factory Default Reset: to completely reset the programming, clock and Configuration Menu to the Factory Default Settings, press the UP, DOWN, and SYSTEM touchpad's simultaneously. The display will go black for a few seconds, and then all segments will display momentarily. Reset settings for the application.

24. 12” Series Program Worksheet
Technical Service has never spoken to anyone who could not program the thermostat once they filled out the schedule worksheet in the manual and KEPT it.
Save a call back and fill it out with the homeowner. Ensure they have the Homeowner Support Hotline:

25. 12” Series Set Time, Year, Month and Date
Press MENU touchpad to enter installer menu.
Press Set Time once to indicate hour and AM or PM designation
Press and hold either the PLUS or MINUS touch pad until you reach the correct hour and A or P designation.
Repeat step 2 and 3 for minutes, year, month and date.
Press Run Schedule to complete 3 2 1 5

26. 12” Series Automatic Daylight Saving Calculator
The Real Time Clock will adjust automatically for daylight savings time, in the following manner:
Increment one hour at 2 AM on the second Sunday of March and decrement one hour at 2 AM on the first Sunday of November.
The daylight saving feature can be enabled or disabled in installer configuration mode. Default is dS ON (enabled).
After entering installer configuration mode, momentarily press or touch + or -key until the display indicates dS (in actual temperature digits) and on (default – in clock digits).
Press the + or - keys to toggle display and operation from On to Off

27. 12” Series Program Copy Button
You may copy any daily program to another day or group of days by pressing the Copy touch pad. In 7 day programming mode when the Copy button is pressed, the other 6 days of the week will flash.
To copy the current program into the remaining six days, simply press the Copy button again.
To copy the current program to another day of the week, press Advance Day to select the day and press Copy to paste the program.
In day programming mode the copy function is similar. The weekday (Mon-Fri) program can be copied to Sat and Sun (both flashing) or use Advance Day to choose Sat or Sun and press Copy to paste the program.

28. 12” Series Configure Program Options
System must be set for Heat or Cool. Press the Menu button for at least 5 seconds.
The display will step #1 in the configuration menu
Press the UP button to the appropriate configuration Menu No
Select the programs per week by pressing UP/DOWN button
“0” for non-programmable
“5+1+ 1” for Mon through Fri with independent Sat. and Sun programs.
“7” for independent program days
Press the UP button to the next configuration Menu No
Select the programs per day by pressing UP/DOWN button
“2” for Morn/Eve program periods per day
“4” for Morn/Day/Eve/Night program periods per day
Press Run

29. 12” Series How to Set A Program
Press the Menu button and then press Set Schedule. Press SYSTEM button to select either "Heat" or "Cool” in the system switch area indicating the active mode being programmed.
The top of the display will show the day(s) being programmed. The time and set at temperature are also displayed. "Morning" will also be displayed to indicate the period.
Press PLUS or MINUS touch pad to change the temperature to your selected temperature for the 1st heating period (Morning).
Press PLUS or MINUS touchpad to adjust the start time for period. The time will change in 15 minute increments.
Press FAN to select Auto or Prog.
Press Set Schedule to advance to the next program period.
Repeat steps 2 through 6 until all of the program times and temperatures are set for all program periods on that day.
Press "Advance Day" to change to the next day and repeat steps 2 through 8.
Press Run Schedule To complete programming.

30. 12” Series Automatic Scheduling
This feature provides a method to program every day with the most popular time and temperature profile using one key press.
For this feature to be available, the Auto schedule options (AS Cool or AS Heat) should be set on in the installer configuration.
Select the desired “Comfort Temperature” in the setpoint. When the Auto Schedule touch key is pressed, it will start flashing indicating that it is now ready to insert the displayed temperature setpoint as the “Comfort Temperature” for the selected system mode currently in (Heat/Cool).
A second press of the Auto Schedule touch key will complete the process. A 6 °F setback temperature will also be inserted for the night step.
Once complete, the touch key display Auto Schedule will disappear disabling any further operation of Auto Schedule touch key. If desired it can be enabled again in the installer configuration menu.

31. 12” Series Entering Fan Program
In the Set Schedule mode, the FAN key is used to select the fan operation during a program period. The default state of the Fan key is FAN Auto (fan runs during a call for cool but not on a call for heat).
It can be changed to FAN Prog (fan runs during a program period). Each press of the FAN key will change the mode of the fan between Auto and Prog.
In the Run mode, when a program period that has FAN Prog begins, the fan will turn on and stay on during the complete period. The display will show FAN On Prog.
Pressing the FAN key will change FAN On Prog to On (fan running continuously) or Auto. To return to FAN On Prog, press Run Schedule.

32. 12” Series Dual Fuel Settings
This feature is applicable only in heat pump modes and an outside remote sensor is installed, the thermostat can monitor the outside temperature.
When the outside temperature falls below the selected setpoint temperature, dF, the thermostat will switch to gas heat and shut down the compressor. The eliminates the need for a fossil fuel kit.
Use the or PLUS or MINUS touchpad's to select the desired setpoint temperature in the range of 5° F to 50° F
Factory default is 5, which disables this feature. See Dual Fuel Temperature and Setpoint in Programming section.
Select Compressor Delay – When dF is enabled, the shut down of the compressor(s) is delayed for a time period after the auxiliary stage is energized. This delay, Cd, is factory set at 60, but can be set in the range of 0 to 99 seconds by using the PLUS or MINUS touchpad's .

33. 12” Series Wired Remote Sensing
One remote temperature sensor can be installed indoor or outdoor and connected to the thermostat by a maximum cable length of 100 meters (300 ft). Three terminals, +, S & - are provided on the terminal block to connect to the White- Rodgers standard wired remote sensor. This sensor will be read by the thermostat only when 24 VAC is present.
When used as indoor sensor, the readings can be weighted with the local sensor for specific program periods. User can enable or disable the remote sensor in the installer configuration mode and also the outdoor temperature can be selected to show on the display.
In the installer configuration mode, momentarily press the PLUS or MINUS touchpad until display indicates Remote (at the top left of the LCD) and OFF (default – in clock digits).
Pressing PLUS or MINUS touchpad will toggle the operation and display from Remote OFF to Remote On.
When Remote On is selected, press the PLUS touchpad for the display to indicate Remote In (for indoor remote). The or keys will toggle the operation and display from Remote In to Outdoor Remote. When any remote is selected the temperature will display in the clock digits for one second alternating with the current time for three seconds when in Run Schedule mode. Outdoor Remote will indicate at the top left of display for outdoor remote reading. Only Remote will show at top left for indoor remote reading. (°F or °C will not indicate with remote temperature readings).
Sensing Range:
Outdoor temperature range is -40 to 140°F
Indoor temperature range is 32 to 99 °F

34. 12” Changing Humidity Settings
Heat (Humidification)
Press SYSTEM key to select HEAT.
To change the humidity setting when System On appears and the heating system is running press the HUMIDITY* button once.
Press UP or DOWN to adjust the humidity level setpoint range. (Humidity setpoint can be adjusted from 5 to 50%.) Hum On will appear indicating it is calling for the humidifier.
Cool (Dehumidification)
Press SYSTEM to select Cool.
To change the humidity setting when System On appears and the cooling system is running press the HUMIDITY* button once.
Press UP or DOWN to adjust the dehumidification level setpoint range. (Humidity setpoint can be adjusted from 5 to 50%.) DeHum On will appear indicating it is calling for the humidifier.
If the room humidity is lower than the adjustment range, press DOWN to 40% and hold for 4 seconds. This will force the DeHum On for one complete cooling cycle to test the dehumidification equipment.
*Note: If Auto Schedule is displayed instead of Humidity, Auto Schedule must be turned off in the Configuration Menu.

35. 12” Emergency Mode for Heat Pumps
Emergency Heat (System EM Position) bypasses the Heat Pump to use the heat source wired to terminal W/E, W2 on the thermostat. EM is typically used when compressor operation is not desired, or you prefer back-up heat only.
Press SYSTEM key to select EM. “EM Heat Mode” will flash on the display.
Press UP or DOWN to adjust thermostat setting above room temperature.
The Emergency heating system will begin to operate. The display will show “System On” flashing “EM Heat Mode” and “Heat” to indicate that the Emergency system operating.
Adjust temperature setting to 3° above room temperature.
Any additional stages of auxiliary heat should begin to operate and the display will show "System On +2".
Press UP or DOWN to adjust the thermostat below room temperature.
The heating system should stop operating.