Education
Central
Engage, Apply, Retain
Emerson 6” Series
Thermostats
Homeowner Support Hotline:
800-284-2925
Note: This module covers common
elements. Refer to Specification Sheet or
Installation Instructions for detailed
information.
Education You Can Build On
Emerson 6” Thermostats
Selecting the Right Thermostat for the Job
Model Number
Multi-Stage
Heat Pump
Gas/Oil/Electric
Universal - Wireless
1F98EZ-1621
1/1
2/2
4/2
✓
1F95-0680
Commercial
1/1
2/2
4/2
✓
✓
1F95EZ-0671
Easy Reader
1/1
2/2
4/2
✓
1F95-0671
1/1
2/2
4/2
✓
Programming Options
Power Source
Humidity Control
Millivolt Compatible
Single Stage (SS)
Multi-Stage (MS)
Heat Pump (HP1 or HP2)
Universal (All)
Universal
Applications
3-Wire Zone Value
Model
Single Stage
Stages Heat /
Cool by
System
Application Coverage by System
Program Days per
Week
Program
Periods per
Day
Hardwire
Battery
Power Assist
H,D
7, Ø
4, 2, Ø
B
✓
7, 5+1+1, Ø
4, 2, Ø
B,H,PA
✓
✓
Ø, 7
4, 2, Ø
B,H,PA
✓
✓
7, 5+1+1, Ø
4, 2, Ø
B,H,PA
6” Series Thermostats Agenda
• Applications
• Wiring
• Configuration
• Programming
Comfort Interface
Sensor
Equipment Control
• Featured Products In This Module
– 1F98EZ-1621
• 4 Wire Universal
– 1F95-0680
• Commercial, Universal
– 1F95EZ-0671
• Easy Reader, Universal
Look at the Box for Detailed Information
Staging By System Type
Programming Options
Applications
Terminal Identification
Part Number
6” Series Thermostat Overview
• Intuitive operating choices
– One Button – One Function
• Universal Up to 4 heat / 2 cool
• Large, Easy to Read Characters
– Easy to view without glasses
• Simple-to-use Non-Programmable Thermostat
– 7-day programming can be enabled if desired
• Dual Fuel Capable with Smart Fuel™ Logic
Program
– No outdoor sensor need for Furnace / Heat Pump
Systems
– No Fossil Fuel Kit Required
6” Series
Specification Sheets Contain Detailed Information
6” Series Applications
Application
Universal
Stages
Programming
Feature
Type
7, 0
Wireless EZ Install
1F98EZ-1621
7, 5+1+1, 0
Commercial
1F95-0680
0, 7
Easy Reader
1F95EZ-0671
7, 5+1+1, 0
6" Screen
1F95-0671
4/2
6” Series Terminal Designations
6" Series
Terminal
Description
Programming
Stages
W/E
W2
Y
Y2
O/B
G
RH and RC
R
C
L
+, S, 6
Hum, Dehum(2)
A1
Universal, Conventional or Heat Pump
1F95-0671
1F95EZ-0671 1F95-0680 1F98EZ-1621
7, 5+1+1, 0
0, 7
7, 5+1+1, 0
0, 7
4/2
4/2
4/2
4/2
1st. Stage Heat (SS1, MS2)
or Aux Heat 1st Stage (HP)
●
2nd Stage Heat (MS2) or
Aux Heat 2nd Stage (HP2)
1st Stage Compressor (SS,
MS2 or HP)
2nd Stage Compressor
(MS2 or HP2)
●
●
●
Reversing Valve Combined
●
Fan Relay
●
24 VAC Hot (TH) Separate
●
●
24 VAC Hot (TH)
24 VAC Common (TR)
Wire
Diagnostics
●
●
Remote Sensor Terminals
●
Wet Heat, 3 Wire Zone
Valve
●
●
●
●
●
Humidity Terminals
●
Economizer
Note:
Outdoor Sensor
Easy Reader Commercial
Wireless Easy
Install
6” Series Heat Pump / Dual Fuel Staging Detail
Stage+
HP1
Heat Mode
HP2
Heat Mode
HP2 w/2 stage
Dual Fuel
Heat Mode
1st
Y1 Compressor
Y1 Compressor
Y1 Compressor
2nd
W/E Aux, stage 1
Y2 Compressor
Y2 Compressor
3rd
W2 Aux, stage 2
4th
W/E Aux, stage 1 W/E 1st Stage Gas
W2 Aux, stage 2
W2 2nd Stage Gas
Dual fuel option de-energizes
any compressor stage when
auxiliary heat is energized
Power Stealing Assist Extends Battery Life
Not available on the Easy Reader 1F95EZ-0671
•
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.
6” Series Wiring for Conventional Systems
- AC Furnace (No Heat Pump)
Single Stage (SS) in Red
Multi-Stage (MS) add Orange
**
#6 Terminal
is for a 3
wire zone
valve
* Common connection optional – required for diagnostic indicator
** For two transformer systems remove the jumper
6” Series Wiring
Heat Pump
Single Stage (HP1) in Red
Multi-Stage (HP2)) and Green
**
6” Series Easy Viewer Configuration
Four Thermostats in One
Outdoor
Unit Type
Thermostat
Configuration
Options
Single Stage 1 (SS1)
Air
Conditioner
No Heat Pump –
Single Stage Compressor
Multi Stage 2 (MS2)
No Heat Pump –
Two Stage Compressor
Heat Pump 1 (HP1)
Heat Pump –
Single Stage Compressor
Heat Pump
Heat Pump 2 (HP2)
Heat Pump –
Two Stage or Two
Compressor
Thermostat Applications
•
•
•
•
•
Gas
Oil Electric
Heat Only / Cool Only
Split Heat/Cool Systems
2 or 3 wire Hydronic Zone (Hot
Water or Steam) Systems
• 24 VAC or Milli-volt
# Stages
Heat /
Cool
1/1
2/2
• Single Stage Compressor Heat
Pump Systems
• Up to Two Stages Aux/Emergency
Heat
3/1
• Two Stage or Two Compressor
Heat Pump Systems
• Up to Two Stages Aux/Emergency
Heat
4 /2
6” Series Navigation
Actual Room Temperature
Desired Temperature
Battery Status
= Full Charge
= Half Capacity
Change
= Replace
Batteries
Temperature Adjustment
Buttons
Menu Button
Run Button
Indicates Heat Pump
System (does not appear
for multi-stage or
single stage
Heat Button
Press to select
Heating
Button Labels
Solid colored labels
Indicate selection is On.
Non-solid or outlined labels
Indicate not selected of Off.
(Heat is on in this example)
A/C Button
Press to select
Air Conditioning
Off Button
Press to turn off both
Heating and Air
Conditioning systems
and Fan
Fan Button
Press to select Fan operation
Fan = Fan On/Continuous Fan
= Fan Auto – Fan runs only
during a call for Heat or Air
Conditioning (typical setting)
6” Entering System Configuration
2. Press and hold the
MENU button for five
seconds
1. System must be in HEAT or
A/C Mode
Most technical
service calls are
the result of
improper system
configuration
6” Application Specific
Versus Customization—Don’t Go Overboard!
MENU ITEM
DISPLAY
(DEFAULT)
System Configuration
(MS 2)
SS1, MS2,
HP1, HP2
Installer Set
Electric Heat Fan
(GAS)
GAS, ELE
Installer Set
OPTIONS
COMMENTS
1. Choose System
2. Select Fan Function
After steps 1 and 2,
Press RUN to get
the system running
quickly
Choose Your System
Menu Item
Display
(Default)
Options
Comments
System
Configuration
(MS 2)
SS1, MS2,
HP1, HP2
Installer Set
Electric Heat Fan
(GAS)
GAS, ELE
Installer Set
Outdoor
Unit Type
Air
Conditioner
Thermostat
Configuration Options
Press Up / Down to select
system type
Single Stage 1 (SS1)
No Heat Pump – Single
Stage Compressor
Multi Stage 2 (MS2)
No Heat Pump –
Two Stage Compressor
Press MENU
to go to Step 2
Select Fan Function
Menu Item
Display
(Default)
Options
Comments
System
Configuration
(MS 2)
SS1, MS2,
HP1, HP2
Installer Set
Electric Heat Fan
(GAS)
GAS, ELE
Installer Set
If there is Gas
Heat in the
system, leave
on Gas
(default)
Press Up / Down
to select
Press Menu to
go to additional
configuration
options
Press Run to
complete initial
configuration
Configuration Punch List
Record settings
of key items for
Homeowner
Reference
6” Configuration Items That Are APPLICATION CRITICAL
Denotes Critical to the Application
MENU ITEM
These Menu Items MUST be correct for the applications!
NOTE: Item Numbers are different depending on application selected.
SS1
HP1
Press Δ or 
MS2
HP2 Displayed
to Select
(Fossil (Heat (Default) From Listed
Fuel) Pump)
Options
Comments
Selects Multi-Stage (MS 2 No Heat Pump), Heat Pump 1 (HP 1, 1
compressor),
HP 1, HP 2, SS 1
Heat Pump 2 (HP 2, 2 compressor or 2 speed compressor), or Single
Stage (SS 1)
1
1
(MS 2)
2
2
(GAS) for SS
or MS
ELE
GAS setting: furnace controls the blower
ELE setting: thermostat controls the blower
12
12
P (0)
7
Defaults to P (0) non-programmable P (7) is 7-day programming
13
13
PS (2)
4
dF (0)
1 to 9
Selects dF (dual Fuel) setting. 0 is Off (If dual Fuel option is required, a
selection of 5 is recommended)
Cd
(60)
0 to 99
Selects compressor delay in seconds when dF is greater than 0
A/C On (o)
Heat On (b)
Selects operation of the reversing valve terminal (O/B) output as an O
or B terminal
–
18
19
20
Selects Program either 2 or 4 periods per day:
Configuration Menu,
Denotes Critical to the Application
Denotes not application critical but an option you may want to consider
MENU ITEM
DISPLAY
DEFAULT
OPTIONS
COMMENTS
Application
Specific Set
By Installer
1.
System
Configuration
(MS 2)
HP1, HP2,
SS1
2.
Electric Heat Fan
(GAS)
ELE
3. EMR
E (On)
Off
4. Heat Cycle Rate
Cr HEAT (ME)
SL, FA
SS1, MS2 only
5. Heat Pump
Configuration
Cycle Rate
Cr Heat /
A/C (ME)
SL, FA
HP1, HP2 only
6. A/C Cycle Rate or
Aux Cycle Rate
Cr A/C (ME) or
CR Aux Heat A/C Off
SL, FA
SL
SS1, MS2 only
HP1, HP2 only
7. Compressor
Lockout Time
CL (OFF)
CL ON
Compressor Lock
Out Engaged
EMR starts system
before
program
Not
enable
in nontime
programmable
Configuration Options
MENU ITEM
DISPLAY DEFAULT
OPTIONS
COMMENTS
8.
System Mode
Configuration
(Heat, A/C, Off)
Heat, Off, Fan/
Heat, Off/ A/C
Off
9.
Compressor
Optimization
CO (OFF)
On
10. LCD Display
Light
dL(ON)
OFF
Selects Display Light
On or Off
11. Temperature
Display Adj.
Hi (0)
1 to 5 Hi or LO
Adjustment of
Temperature Display
12. °F/°C Selection
(°F)
°C
Fahrenheit/Celsius
Installer Set
CO gives you a Fan On
Installer Set
/ Off delay in cooling
Configuration Options
DISPLAY
DEFAULT
OPTIONS
14. Schedules per
week
P (0)
7
15. Periods per day
PS(2)
4
HEAT FA (On)
Off
A/C FA (On)
Off
17. Daylight
Savings Time
dS (On)
Off
18. Temp Range
Heat Limit
HL (99)
62 - 98
19. Temp Range A/C
Limit
LL (45)
46-82
MENU ITEM
15. Fast HEAT
16. Fast A/C
COMMENTS
Ships as NonProgrammable
Number of Periods/Day
heat comes on if
OptionAux.
to Disable
the temp is manually
Optionraised
to Disable
a few degrees
Automatic Time Adjustment
for Daylight Savings Time
Control
and
Limit theenergy
amountcosts
of
childproof
a change
thermostat
temperature
allowed
Configuration Options
MENU ITEM
DISPLAY
(DEFAULT)
OPTIONS
20. Dual Fuel Setting plus
DF Compressor Delay
dF (0)
Cd (60)
1 to 9
00 to 99
Application
Selecting Specific
1 to 9
Set
By Installer
(HP1
enables
Dual Fuel
orOption
HP)
On A/C (O)
On Heat (B)
O defaults to heat
B defaults to cool
21. O/B Output
Configuration
22. Exit Menu
COMMENTS
Two Options for Staging
1. Smart Logic (Computed Staging)
– Easy Viewer tracks system performance
and calculates optimum time to bring on
additional stages (0 to 30 minutes) .
• Note: Depending on system performance
the time for staging will vary depending on
the algorithm software. The calculation is
not purely time nor temperature based.
Staging times are going to vary from day to
day.
• Gives homeowner the choice of cost
savings or comfort
2. Fast Second Stage (Optional feature)
– Brings additional heat stage when
temperature is manually raised 3°F
– Gives homeowner optimal comfort
For initial
startup,
configure for
Fast Second
Stage to save
time evaluating
system
operations
Staging Logic versus Outside Sensor
• Dual Fuel Applications (Optional)
– Easy Viewer uses its Smart Logic to manage coordination of heat pump
and furnace operation. When the Dual Fuel stages are called for the
Easy Viewer will shut down the compressors on the heat pump.
Without the use of an outdoor sensor and a fossil fuel kit
• If you normally use an outdoor sensor and a fossil fuel kit for dual fuel
applications the Easy Reader is a great solution!
• Think of the time and money you will save on the next installation.
6” Dual Fuel Settings—No Sensor Req.
•
The Dual Fuel Logic allows control of a heat pump with fossil fuel
backup heat without the use of a fossil fuel kit. When fossil fuel is called
for the thermostat will turn off the compressor and switch to gas heat
automatically using the Dual Fuel Logic algorithm.
•
Access the Configuration Menu Step 20
– The dual fuel setting options range is 0 to 9
• 0 is default Off allowing electric heat to be used
– Settings of 1 to 9 is a value used in the software algorithm.
• Up for Comfort
– Increasing the value up to the max of 9 will result smaller staging separation
• Down for Energy Savings
– Decreasing the value to a minimum of 1 will result in larger separation
•
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 .
6” 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:
888-616-0030
6” Home Screen
Programmed
Period
Day of Week
Time of Day
Mon
12:24 A
Buttons used
for Forward or
Back
Day
Menu
AUX
AUX,
Heat Pump Only
(to energize AUX press
and hold HEAT button
for 5 seconds)
Programmable Mode
Button used
for Scheduling
6” Set Time and Day
1. In Heat or AC, press Menu
button
2. Press the Time button to
display hour and A or P
3. Press the UP/DOWN button to
set correct hour and AM or PM
4. Press Time to display minutes
5. Repeat steps 3 and 4 to set
minutes, year, month and day
of week
6. Press Run to return to home
screen
UP/
DOWN
Menu/
Time
Run
6” Configure Program Options
• System must be set for Heat or Cool. Press the Menu button for at
least 5 seconds.
• The display will display step #1 in the configuration menu
• Press the UP button to the configuration Menu No
– Select the programs per week by pressing UP/DOWN button
• “0” for non-programmable
• “7” for independent program days
• Press the UP button to the 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
6” How to Set A Program
1. In Heat mode, press the MENU button to display
additional button choices.
2. Press Sched button. The display will show the
day being programmed and the time and desired
temperature for the period. Either “Day” for two
period configuration or “Morn” for four period
configuration will be displayed to indicate the
period. “Heat” is displayed indicating the mode
being programmed.
3. Press the UP/DOWN button to change the
temperature to your selected temperature for the
1st. Heating period.
4. Press the TIME button to toggle between Time
and Temperature. Press the UP/DOWN buttons
to adjust the start time for the period in 15
minute increments.
5. Press Sched to advance to the next program
period.
6. Repeat steps 3 through 5 until all of the program
times and temperatures are set for all program
periods for that day.
7. Use the Copy button to copy current day’s
program to any other day or press Adv Day and
repeat steps 3 through 6 until all programs are
entered.
8. Press Run to complete programming
Day
Mon
72
6:00 P
UP/
DOWN
Menu
Sched
Heat
Adv Day
Time
Run
Time
Run
Sched
Features Your Customer Should Be Aware Of
• Auxiliary Heating (Equivalent to Emergency Mode)
– To turn on – Hold Heat button for 5 seconds
–
(Heat Pump) changes to bold
(Aux Heat On)
• Temporary Temperature Hold (2 hours)
– Press the Up or Down button to change the temp.
• Permanent Temperature Hold (Indefinitely)
– Press the Up or Down button to change the temp.
– Press the Hold button to complete
• Systems Diagnostics
– “Call for Service” will display if your
system has diagnostic capabilities and
is wired to the “L” terminal
Power to “L” triggers
“CALL FOR SERVICE”
Troubleshooting Tips
• “My thermostat brings on 2nd stage too fast! I don’t want to use the
expensive back-up heat”
– Solution: Homeowner needs to lower temperature settings to
avoid use of that stage of heat.
• “My thermostat won’t bring on 2nd stage, even when I raise the
temperature a few degrees, for 15 or 20 minutes sometimes”
– Solution: Turn on the fast 2nd stage.
• “I’ve been timing the thermostat to see when it brings on the back-up
heat and writing it down. This thing is possessed”
– Solution: Put down the stop watch. It is a complicated
calculation, not solely time or temperature based.
Some Things To Remember
• Most common mistake is not choosing correct configuration for the
application
– SS, MS, HP1, HP2
• Easy Reader does not have Staging Indicators
– Designed intentionally for simplicity of operation
• Easy Reader ships as a Non-Programmable
– Ask the homeowner if they want programmable
• Dual Fuel can be used on both HP1 and HP2
– Some think it is only for HP2