SF SFTHRP121WFC Owner's Manual And Installation Instructions
Premier Series
Digital
Thermostat
Owner’s Manual
and Installation
Instructions
RESIDENTIAL
model SFTHRP121WFC
i
Follow the Installation Instructions before proceeding. Set the
thermostat mode to “OFF” prior to changing settings in setup
or restoring Factory Defaults.
CAUTIO
N
This thermostat has the ability to receive updates to its firmware. Periodically
firmware updates are released by the manufacturer to add features and/or
performance enhancements. This manual was produced reflecting the most
current firmware/feature set at the time of publication, firmware rev. 12. Firmware
releases after rev. 12 may not be adequately depicted in this manual. Please
refer to the appropriate website or contact your place of purchase to learn about
changes to the thermostat after firmware release 12.
ii
Glossary of Terms
Auto-Changeover: A mode in which the thermostat will turn on the
heating or cooling based on room temperature demand.
Cool Setpoint: The warmest temperature that the space should rise to
before cooling is turned on (without regard to deadband).
Deadband: The number of degrees the thermostat will wait, once a
setpoint has been reached, before energizing heating or cooling.
Dierential: The forced temperature dierence between the heat
setpoint and the cool setpoint.
Heat Setpoint: The coolest temperature that the space should drop to
before heating is turned on (without regard to deadband).
Icon: The word or symbol that appears on the thermostat display.
Mode: The current operating condition of the thermostat (i.e. O, Heat,
Cool, Auto, Program On).
Non-Programmable Thermostat: A thermostat that does not have the
capability of running Time Period Programming.
Programmable Thermostat: A thermostat that has the capability of
running Time Period Programming.
Temperature Swing: Same as Deadband.
Time Period Programming: A program that allows the thermostat to
automatically adjust the heat setpoint and/or the cool setpoint based
on the time of the day.
Table of Contents
GET TO KNOW YOUR THERMOSTAT
Get to Know Your Thermostat ....................................................... 1
Quick Start ..................................................................................... 6
INSTALLATION INSTRUCTIONS
Installation Instructions ................................................................. 8
The Thermostat Backplate ........................................................... 10
Sample Wiring Diagrams .............................................................. 12
Test Operation ............................................................................... 15
USER SETUP
Backlight Operation ...................................................................... 16
Scrolling Display Options ............................................................. 17
Programming Vacation & Away Settings ..................................... 18
Emergency Heat ........................................................................... 18
Wireless Module ........................................................................... 19
Service Filter ................................................................................. 20
Runtimes ....................................................................................... 21
Time Period Programming ........................................................... 22
INSTALLER SETUP
Program Mode Operation ............................................................. 24
Setpoint Limits .............................................................................. 25
Deadband Settings ....................................................................... 26
Dry Contact Operation ................................................................. 27
Skyport .......................................................................................... 27
Local API ....................................................................................... 27
ADR ............................................................................................... 31
Locking/Unlocking the Keypad .................................................... 33
Factory Defaults............................................................................ 34
TECHNICIAN SETUP
Equipment Testing ........................................................................ 35
Advanced Setup Table ................................................................. 36
Troubleshooting ............................................................................ 38
WARRANTY ..................................................................................... 39
TECHNICAL SPECIFICATIONS ...................................................... 40
1
Get To Know Your Thermostat
Optional WiFi Module
Backlit, Scrolling Display
Backlit LCD Display
Heat or Cool
Demand Indicator
Red = Heat, Green = Cool
Backlit Cooler & Warmer
Buttons
Setup Buttons Behind Door
Mode Button
2
Get To Know Your Thermostat
Setup Buttons
3
Get To Know Your Thermostat
Display Features
1 Program icon—Indicates that Time Period Programming is running
or is enabled to be set.
2 Clock with Day of the Week—Indicates the current time and day.
This clock is also used to program the time period schedules.
3 Outdoor icon—Indicates the temperature displayed is from the
optional outdoor sensor.
4 Room Temperature Display—Indicates the current room temperature
and displays the outdoor temperature when selected.
5 Mode Indicators
Selects the operational mode of the equipment.
HEAT - Indicates the heating mode.
COOL - Indicates the air conditioning mode.
HEAT & COOL - Indicates the system will automatically change-over
between heat and cool modes as the temperature varies.
OFF - Indicates heating and cooling are turned off.
6 The scrolling display will be used to help you easily navigate
the setup screens in the thermostat.
HI
Lo
Program
ONOFF
Outdoor
Fan On
COOL
AUXHEAT
Day Night
Morning
Evening
Setup Step
2nd3rd
Stage
Am
Pm
18:88
188
188
88
188
6
5
5
4
3
2
1
4
Get To Know Your Thermostat
Display Features
7 2nd Stage icon
Indicates when 2nd stage heating has been engaged.
8 Setup Step icon
Indicates the step number when programming the thermostat
9 Morning, Day, Evening & Night icons
Indicates the day part of the time period program when the
thermostat is in the setup mode.
10 Desired Set Temperature
Indicates desired room temperature(s). Also displays
the highest and lowest temperatures for the day.
11 Wi-Fi icons
One dot indicates the thermostat recognizes the wireless module.
The full icon indicates the thermostat is currently connected to the
Local access point, via the optional Wi-Fi Module.
12 icon
Indicates the keypad has been locked.
HI
Lo
Program ONOFF
Outdoor
Fan On
COOL
AUXH
EAT
Day Night
Morning
Evening
Setup Step
2nd3rd
Stage
Am
Pm
18:88
188
188
88
188
10
12
10
11
8
7
9
5
Get To Know Your Thermostat
Display Features
Program ONOFF
Outdoor
Fan On
COOL
AUXH
EAT
Day Night
Morning
Evening
Setup Step
2nd3rd
Stage
Am
Pm
18:88
188
188
88
188
14
13
13 Fan On icon –
Indicates constant, continuous fan operation.
When Fan On is not lit - indicates the fan will only
operate when necessary to heat or to cool.
14 AuxHeat icon
Indicates 2nd stage electric strip heat is being used when the
thermostat is programmed for Heat Pump operation.
Set
Clock
6
Quick Start
During Setup and Programming:
Press the WARMER or COOLER buttons to modify the selection.
Press the MODE button to advance and confirm through the setup steps.
Setting the Clock and Day
Not available when Wi-Fi module is present
Press the SET CLOCK button. Adjust the clock using the WARMER or
COOLER buttons. Press MODE to advance to the day setting. Adjust the
day using the WARMER or COOLER buttons. Press the SET CLOCK button
to confirm settings.
TIP: To adjust the time by hours, press and hold the FAN button while pressing
the WARMER or COOLER buttons.
Selecting the Heat or Cool Mode
Select mode by pressing the MODE button.
Heating Only—Only the heating operation will be controlled by the
thermostat in this mode.
Cooling Only—Only the cooling operation will be controlled by the thermostat
in this mode.
Heating or Cooling (Auto-Changeover)—AUTO will automatically select heat or
cool based on room temperature demand.
OFF—OFF indicates both heating and air conditioning systems are turned off.
7
Quick Start
Selecting your desired temperature
AUTO-CHANGEOVER MODE —Pressing the WARMER or COOLER buttons in
Auto mode will adjust both the heat and cool setpoints simultaneously.
To adjust heat and cool setpoints individually, choose HEAT mode to adjust
the heat setpoint and COOL mode to adjust the cool setpoint, then return
to AUTO mode.
HEAT OR COOL MODE—Pressing the WARMER or COOLER buttons in Heat or
Cool mode will adjust only the heat or cool setpoints individually displayed.
Using the Fan Button
FAN ON indicates constant fan operation. You may turn the fan on
even if the thermostat is in the OFF mode. Pressing the FAN button
toggles this feature on or off. If you don’t see “Fan On”, the fan is in
auto mode and will only turn on during a heat or cool demand.
FAN ON | AUTO
ACCESRY
STATUS
OUTDOOR
Viewing the Temperature Sensors
OUTDOOR TEMP - Press the OUTDOOR button to view the current
outdoor temperature.
If the thermostat is connected to Skyport; upon pressing the OUTDOOR
button the scrolling display will read “Forecast”.
The forecasted high and low temperatures for the day will be displayed.
Press the OUTDOOR button again to view any connected wired sensor
(SUPPLY).
Note: If no outdoor sensor is connected, and there isn’t outdoor temperature via
Wi-Fi, then 2 dashes [- -] will appear with the first button press.
SUPPLY TEMP - Press the Accessory Status button to
view linked wireless wired sensors and other accessories.
Press the Accessory Status button to return to the main screen.
8
Installation Instructions
Remove and Replace the Old Thermostat
To install the thermostat properly, please follow these step-by-step
instructions. If you are unsure about any of these steps, call a qualified
technician for assistance.
• Assemble tools: Flat-blade screwdriver, wire cutters, and wire
strippers.
• Make sure your Heater/Air Conditioner is working properly
before beginning installation of the thermostat.
• Carefully unpack the thermostat. Save the screws, any brackets,
and instructions.
• Turn off the power to the Heating/Air Conditioning system at
the main fuse panel. Most residential systems have a separate
breaker for disconnecting power to the furnace.
• Remove the cover of the old thermostat. If it does not come off
easily, check for screws.
• Loosen the screws holding the thermostat base or subbase to
the wall and lift away.
• If you have a smart phone handy, take a photo of the wiring for
future reference.
• Disconnect the wires from the old thermostat. Tape the ends of
the wires as you disconnect them, and mark them with the letter
of the terminal for easy reconnection to the new thermostat.
• Keep the old thermostat for reference purposes, until your new
thermostat is functioning properly.
9
Installation Instructions
Wire Connections
If the terminal designations on your old thermostat do not match those
on the new thermostat, see the chart below or the wiring diagrams
that follow.
Wire from the Install on the
old thermostat Function new thermostat
terminal marked connector marked
G or F Fan G
Y1, Y Cooling Y1
W1, W Heating W1/0/B
Rh, R, M, Vr, A Power R
C Common C
O/B Rev. Valve W1/O/B*
W2 2nd Stage Heat W2
Ck1 Dry Contact Switch DRY CONTACT
CKGND Dry Contact Switch DRY CONTACT
* O/B is used if your system is a Heat Pump.
10
Installation Instructions
The Thermostat Backplate
To remove the thermostat
backplate: Gently separate
the display from the base by
pulling first from one side,
then the other until the two
pieces unsnap.
When stat is NOT mounted on wall...
R
G
W1/O/B
W2
Y1
DEHUM
HUM
C
AUX
OUTDOOR
SENSOR
DRY
CONTACT
R 24 VAC return
G Fan relay
W1/O/B 1st stage heat circuit
W2 2nd stage heat circuit
Y1 1st stage compressor relay
C 24 VAC common
OUTDOOR Outdoor sensor
SENSOR connections
DRY Dry Contact
CONTACT connections
IMPORTANT: This thermostat requires both R (24 VAC Return) and
C (24 VAC Common) be connected to the backplate terminals.
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