Trane NEXIA XR724 Instruction Manual

Nexia Smart Home
Comfort System
Customer Service:
For HVAC related
issues, contact your
servicing dealer
ÎNOTE: A 24 Volt
common and hot
wire MUST be
connected to
the XR724 for
operation.
XR724
Touchscreen
Comfort Control
Model TCONT724AS42DA
User Guide and Installation Instructions
18-HD82D1-1B-EN
Contents
User Guide
Features ............................................................................................................................. 2
Operation............................................................................................................................ 3
User settings....................................................................................................................... 4
Schedules........................................................................................................................... 5
Display settings .................................................................................................................. 5
Sensor settings................................................................................................................... 5
WiFi settings ....................................................................................................................... 6
Nexia settings ..................................................................................................................... 6
Installer settings.................................................................................................................. 7
Test Mode ........................................................................................................................... 7
Reminders .......................................................................................................................... 8
Restore Defaults................................................................................................................. 8
About .................................................................................................................................. 8
Clean Screen...................................................................................................................... 8
Nexia Mobile App Instructions ............................................................................................ 9
Installer’s Guide
Product Specications ..................................................................................................... 16
Installation and Wiring ..................................................................................................... 17
Physical Location ............................................................................................................. 17
Field Wiring Diagrams ...................................................................................................... 18
Remote Temp Sensors ..................................................................................................... 35
Troubleshooting................................................................................................................ 37
FCC/IC notice ................................................................................................................... 38

218-HD82D1-1B-EN
• WiFi comfort control
• Remote access via smartphone, tablet, or P.C.
(requires a NexiaTM Smart Home Comfort System account)
• Interactive 4.3” black & white touchscreen
• 7 Day programmable, 4 schedules/day
• Built in humidity sensor with RH display
• Filter, maintenance, humidier service reminders
• Remote temperature sensing option (1 indoor/1 outdoor)
• Auxiliary & compressor heat lockouts
• Dehumidication (over cooling)
• Enhanced dehumidication (cooling)
• Adjustable variable speed fan settings (pwm)
• Energy Savings Mode (ESM)
• Screen lock
• Upgradable rmware (requires a Nexia™Smart Home Comfort System account)
• Service test modes
• Humidier control
XR724 Product Specications
XR724 Features
Specication Description
Product Model: TCONT724AS42DAA
Product: XR724 HVAC System comfort control. WiFi communications enabled.
Size: 5.75” wide x 3.5” height x 1” depth
Display: Fixed Segment LCD, 4” x 2.25”, with 17 character alpha numeric display
Touchscreen: Yes
Backlight: Yes, White, Controllable, on, off, timeout
Power: 24VAC from HVAC System
HVAC System Type: Standard (gas/electric), Heat Pump, or Dual Fuel
Heat/Cool Stages: Up to four stages of heat/two stages cool
PWM Output (BK) Variable speed motor control
Heat Pump Switchover valve: Selectable change over with cool or with heat
Auxiliary Contact Humidier, Ventilation or Dehumidier control
Communications: WiFi
Memory: Non-volatile
Date/Time: 12 hour super capacitor backup
Time is automatically updated if the control is connected to Nexia Smart Home
Comfort System
XR724 USER GUIDE

3
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PM
Fan
Cooling
Menu SchedMode
Hold Cool
Auto
F
:
XR724 USER GUIDE
The XR724 Comfort Control provides typical operation of a forced air heating and cooling HVAC system. It also
features WiFi capability for remote control and Nexia Smart Home Comfort System connectivity.
Normally, the Comfort Control displays the Home Screen as shown above.
Item Description Notes
Clock Display The current time is displayed in the upper left corner
of the main screen. The time will blink when the clock
has not been set.
See TIME/DATE for more information. If the control is
connected to Nexia Smart Home Comfort System the
clock will be updated by the Nexia portal.
Dynamic Labels and Func-
tion Control Buttons
The buttons are dened by the dynamic labels in each
button. As you navigate through menus, the labels for
the buttons will change.
Setpoint Display and Set-
point Up/Down Buttons
The current heat or cool setpoint is displayed. These
setpoints may be set using Nexia Smart Home
Comfort System, the Control’s internal schedule, or
by pressing the Setpoint Up/Down buttons. Pressing
the setpoint button changes the setpoint screen. The
current mode is displayed at the top of the screen.
Adjust the setpoint by pressing the up or down arrows.
To change setpoint mode press the MODE button.
The setpoints will push each other if they are adjusted
to within the minimum heat/cool separation setting.
This is normally 3 degrees.
Temperature Display The Comfort Control displays the current temperature
as sensed by the internal temperature sensor.
The internal temperature sensor can be adjusted as
necessary.
Menu Button Button used to access other Comfort Control menus
System Mode Button Button used to change the system mode. Off: System off
Heating: Heating only
Cooling: Cooling only
Auto: Heating/Cooling as necessary
EM Heat: Heat Pump Emergency Heat, Compressor
Disabled, Indoor Heat only.
Fan Mode Button Button used to change the fan mode Auto: Fan on when cooling/heating is necessary
On: Fan constantly on
Circ: Fan on for a user-selected number of minutes
per hour
Schedule Mode Button Button used to change the schedule mode
The default mode is HOLD which disables scheduling.
Hold: System maintains the current temperature
setpoints. Schedules are disregarded.
Run: Run the system schedule
Energy Saving Mode (ESM): Run schedule
using the ESM Setpoints.
Manual setpoint changes while in Run Schedule
mode will only last until the next schedule period.
Operation

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User Settings allow the user to customize various settings on the XR724 control. To access User Settings simply press
the Menu button once and “User Settings” will be displayed. To enter the User Settings menu, press the Select button,
then use the Next button to navigate through the options below. The default setting will be shown in brackets. After
each selection press the Done button to save changes. Certain menu selections, which are marked by an asterisk ( * ),
may or may not be present depending on other menu settings.
The following is a guide of the menu options available by pressing the Menu button. Certain menu selections, which
are marked by an asterisk ( * ), may or may not be present depending on other menu settings.
* Only appears as a menu item if Dehumidify is set to Yes, Aux Relay is set to Dehumidier, or Aux Relay is set to
Humidity.
USER SETTINGS
HUMIDITY *
MENU OPTIONS
HUMIDITY
Setting Range Description
Cooling RH Target* 30% to 60% [50%] Select the desired indoor relative humidity during cooling mode. Dehu-
midication must be enabled in the Installer Settings for this option to be
available.
Heating RH Target* 10% to 45% [40%] Select the desired indoor relative humidity during heating mode.
Humidication must be enabled in the Installer Settings for this option to
be available.
Once all selections have been made, press the Done button to exit and return to menu. Press Next to navigate to the next setting.
THERMOSTAT
Setting Range / Sub Setting Description / Range of Sub Settings
Temperature Scale [Fahrenheit], Celsius Select the temperature display scale
Max Heat Setpoint 55 - [90] Degrees Select the highest heating setpoint allowed
Min Cooling Setpoint [60] - 99 Degrees Select the lowest cooling setpoint allowed
Time/Date* Set Hour 1 - 12 AM, 1 - 12 PM [12PM]
Set Minutes 0 - 59 [0]
Day of Week [Sun], Mon, Tue, Wed, Thr, Fri, Sat
Year [2013] - 2113
Month [Jan], Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
Date [1] - 31
DST Enable [Yes], No
Continuous Fan Airow* 35% - 100% [50%] Select the desired fan speed when the Fan Mode selected is Continuous
(variable speed blower required). Only available if ID Fan Type = Variable.
Fan Circulate On Time [10] - 55 minutes Select the desired amount of time the fan will cycle per hour when the Fan
Mode selected is Circ
Once all selections have been made, press the Done button to exit and return to menu. Press Next to navigate to the next setting.
XR724 USER GUIDE
If connected with Nexia,
then time and date are
provided by the network

5
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CALIBRATE SENSORS
Setting Range Description
Sensor Cal +/- 7 degrees (F or C) [0 deg] Calibrate the internal temperature sensor (1˚ in F = 2˚ in C)
Remote Sensor Cal* +/- 7 degrees (F or C) [0 deg] Calibrate an attached remote sensor
ODT Sensor Cal* +/- 7 degrees (F or C) [0 deg] Calibrate an attached outdoor sensor
RH Cal +/- 7 % [0 %] Calibrate the internal humidity sensor
Once all selections have been made, press the Done button to exit and return to menu. Press Next to navigate to the next setting.
DISPLAY
Setting Range Description
Backlight On 0 - [100] percent Select the screen brightness level when the backlight is lit
Backlight Off [0] - 100 percent Select the screen brightness level when the backlight timeout expires
Display Lock [Unlocked], Display lock Select security level
• Unlocked - Enables selection of all menus and settings
• Display Lock - Disables selection of all menus and settings
Note: When Display Lock is selected a lock icon will appear next to the
up arrow.
Note: To disable Display Lock, press and hold the Menu button 5 seconds
until the lock icon disappears.
Once all selections have been made, press the Done button to exit and return to menu. Press Next to navigate to the next setting.
USER SETTINGS continued
SCHEDULES
Setting Range / Sub Settings Description / Range of Sub Settings
ESM Heat Setpoint* 55 - 90 degrees [62] Select the desired Heating Setpoint when ESM (Energy Savings Mode)
is selected
ESM Cooling Setpoint* 60 - 99 degrees [85] Select the desired Cooling Setpoint when ESM is selected
Edit Schedule* Select Day (use Back/Next)
Wake Period
This section is done for each day
Set Time [6:00 am]
Heat Setpoint 60˚- 90˚ [70]
Cool Setpoint 60˚- 90˚ [78]
Day Period Set Time [8:00 am]
Heat Setpoint 60˚- 90˚ [62]
Cool Setpoint 60˚- 90˚ [85]
Eve Period Set Time [6:00 pm]
Heat Setpoint 60˚- 90˚ [70]
Cool Setpoint 60˚- 90˚ [78]
Night Period Set Time [10:00 pm]
Heat Setpoint 60˚- 90˚ [62]
Cool Setpoint 60˚- 90˚ [78]
Copy Schedule* Copy from (use Back/Next)
Select day to copy
Copy (day selected) To
Copy selected day to current schedule period.
Smart Recovery* Yes, [No]
Once all selections have been made, press the Done button to exit and return to menu. Press Next to navigate to the next setting.
The following is a guide of the menu options available by pressing the Menu button. Certain menu selections, which
are marked by an asterisk ( * ), may or may not be present depending on other menu settings.
XR724 USER GUIDE

618-HD82D1-1B-EN
WIFI
NEXIA
WIFI
Setting Range Description
Network Join a Network
OR leave network
Network connection action required: Yes, No
Status WiFi not congured
OR Nexia enrolled
Status of Network connection
Connection Result WiFi not congured
OR Success
Status of WiFi connection
Info SPWF FW Firmware version displayed
SSID Not Available OR Network Name displayed
IP Not Available OR IP Address displayed
Mask Not Available OR Mask displayed
GW Not Available OR Gateway IP address displayed
DNS Not Available OR DNS IP address displayed
MAC Not Available OR MAC address displayed
Retries Retries (X) Number of connection retries
Connection Time Disconnected OR X hours Connection hours
RSSI RSSI – xx DBM Connection signal strength
Once all selections have been made, press the Done button to exit and return to menu. Press Next to navigate to the next setting.
NEXIA
Setting Range Description
Status WiFi Not Congured
Enrolled
WiFi connection status
Info URL (XXXX)
Port (XXXXX)
Nexia Pin (XXXX)
Nexia connection info
Enroll OR Unenroll Enroll, Unenroll Join OR leave a Nexia connection
Once all selections have been made, press the Done button to exit and return to menu. Press Next to navigate to the next setting.
XR724 USER GUIDE
Even though open networks (no password) and WEP WiFi encryption are supported, it is recommended to use a more
secure network encryption such as WPA2 or later.

7
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SERVICE
INSTALLER SETTINGS
Setting Sub Settings Range
Equipment Type ODU Type (Outdoor Unit) None, [AC], HP
ODU Stages [1 Stage], 2 Stages
Compressor Type* [1 Comp - 2 Stage], 2 Comp - 2 Stage
IDU Type [Gas / Oil], Electric, Hydronic
Hydronic Type* [Hydro Air], Wet Heat
ID Heat Stages [1 Stage], 2 Stages
ID Fan Type [Non-Variable], Variable
SOV Operation* [with Cool], With Heat
Sensor Settings Remote Sensor [None], Replace Indoor, Average
ODT Sensor [None], Outdoor
Accessories Aux Relay [None], Humidity, Ventilation, Dehumidier
Control Option* [With Active Heat], Without Active Heat
Vent Run Time* [Off], 5 - 60 min in 5 min increments
Comfort Settings Control Response [Normal], Less Aggressive, More Aggressive (see page 9 for denitions)
Dehumidify* [Yes], No
Overcooling Limit* [Off], 1 deg, 2 deg, 3 deg
Smart Cont Fan* [No], Yes
Airow Settings One of the following groups will be
Fan type = Non Variable On Delay Cooling [0], 5-90 Sec in 5 sec increments
Off Delay Cooling [0], 5-90 Sec in 5 sec increments
On Delay Heating* [0], 5-90 Sec in 5 sec increments
Off Delay Heating* [0], 5-90 Sec in 5 sec increments
Fan type = Variable On Delay Cooling Disabled, [Enhanced Mode], 30 sec delay
Off Delay Cooling Disabled, [1.5 Min at 100%], 45 sec delay
On Delay Heating* Disabled, [Enhanced Mode], 30 sec delay
Off Delay Heating* Disabled, [1.5 Min at 100%], 45 sec delay
Hydronic Type = Hydro Air On Delay Heat [0], 5-90 Sec in 5 sec increments
Off Delay Heat [0], 5-90 Sec in 5 Sec increments
Lockouts* Aux Heat [No], Yes
Aux Lockout ODT* 30 - 70 Deg [50 Deg]
Comp Heat [No], Yes
Comp Lockout ODT* 5 - 70 Deg, [40 Deg]
Once all selections have been made, press the Done button to exit and return to menu. Press Next to navigate to the next setting.
The following is a guide of the menu options available on screen accessed by pressing the Menu button. Certain
menu selections, which are marked by an asterisk ( * ), may or may not be present depending on other menu settings.
Press and hold Service button for 5 seconds until service menu is displayed
displayed
XR724 USER GUIDE

818-HD82D1-1B-EN
SERVICE continued
ABOUT
REMINDERS
Setting Range Description
Filtration Enable [No], Yes Filter change reminder
Filter Period* [Monthly], Quarterly, Bi-Annually,
Annually
Filter change reminder period
Start Month* [Jan], Feb, Mar, Apr, May, Jun,
Jul, Aug, Sep, Oct, Nov, Dec
Period start month
System Maint Enable [No], Yes System Maintenance reminder
Maint Period* [Bi-Annually], Annually Maintenance reminder period
First Maint Month* Jan, Feb, [Mar], Apr, May, Jun,
Jul, Aug, Sep, Oct, Nov, Dec
Period start month
Second Maint Month* Jan, Feb, Mar, Apr, May, Jun, Jul,
Aug, [Sep], Oct, Nov, Dec
2nd period start month
Humidier Enable [Yes], No
Start Month [Jan], Feb, Mar, Apr, May, Jun,
Jul, Aug, Sep, Oct, Nov, Dec
Once all selections have been made, press the Done button to exit and return to menu. Press Next to navigate to the next setting.
Setting Range Description
Version XXXXXX Firmware version number
Device ID (SIN) XXXXXX Unit serial number
ODU Type None, AC, HP Outdoor unit type setting
IDU Type Electric, Gas/Oil, Hydronic Indoor unit type setting
SOV W/Cool, W/Heat Switchover value type setting (HP only)
Once all selections have been made, press the Done button to exit and return to menu. Press Next to navigate to the next setting.
RESTORE DEFAULTS
Setting Action Description
Restore HVAC Defaults Yes, No Resets all HVAC settings to Default Settings
Restore Factory Defaults Press and Hold “Yes” Press and hold “Yes” button until “Factory” is displayed
Resets HVAC and WiFi defaults
The following is a guide of the menu options available on screen accessed by pressing the Menu button. Certain
menu selections, which are marked by an asterisk ( * ), may or may not be present depending on other menu settings.
TEST MODE (stays on for 30 minutes)
Test Mode Settings Description
Blower (Non-VS) Blower On Energize “G” circuit
Blower (VS) 50%, 100% Energize “G” and “BK” circuit
Cooling Single Stage, 1st Stage, 2nd Stage Energize selected “Y1” or “Y2”, “O” and “G” circuit (BK also for VS
indoor unit)
Comp Heating* Single Stage, 1st Stage, 2nd Stage Energize selected “Y1” or “Y2” and “G” circuit (“BK” also for VS
indoor unit)
Indoor Heating Single Stage, 1st Stage, 2nd Stage
Energize selected “W1” or “W2” (“G” circuit also for electric heat)
Aux Relay Relay On Close normally open dry contacts
Once testing is complete, press the Done button to exit and return to menu.
XR724 USER GUIDE

9
18-HD82D1-1B-EN
XR724 Control Response Proles
CLEAN SCREEN
Setting Range Description
Clean Screen Yes, No 30 sec countdown
Once all selections have been made, press the Done button to exit and return to menu. Press Next to navigate to the next setting.
From Installer Settings / Comfort Settings (numbers are in degrees, F or C)
Cooling Normal Less Aggressive More Aggressive
Cooling Delta Stage 1 ON 0.5 1 0.5
Cooling Delta Stage 2 ON 1.5 2 1
Cooling Delta Stage 1 OFF -0.5 0 -1.0
Cooling Delta Stage 2 OFF -0.5 0 -1.0
Heating - HP Normal Less Aggressive More Aggressive
Comp Heat Delta Stage 1 ON 0.5 1 0.5
Comp Heat Delta Stage 2 ON 1.5 2 1.0
Indoor Heat Delta Stage 1 ON 2.5 3 1.5
Indoor Heat Delta Stage 2 ON 3.5 4 2.0
Comp Heat Delta Stage 1 OFF 0 0 0
Comp Heat Delta Stage 2 OFF 0 0 0
Indoor Heat Delta Stage 1 OFF 0 0 0
Indoor Heat Delta Stage 2 OFF 0 0 0
Heating - Gas Normal Less Aggressive More Aggressive
Indoor Heat Delta Stage 1 ON 0.5 1 0.5
Indoor Heat Delta Stage 2 ON 1.5 2 1.0
Indoor Heat Delta Stage 1 OFF 0 0 0
Indoor Heat Delta Stage 2 OFF 0 0 0
Timers Normal Less Aggressive More Aggressive
Heat Stage UP Timer 15 min 20 min 10 min
Cool Stage UP Timer 15 min 20 min 10 min
XR724 USER GUIDE

10 18-HD82D1-1B-EN
XR724 NEXIA Enrollment
The XR724 uses the Nexia mobile app to enroll into Nexia. To enroll download the Nexia app from the Google Play™
Store or App Store®, then launch the app. Once in the app, click Connect New Device, select 724 thermostat then
follow installation wizard prompts.
XR724 USER GUIDE

11
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XR724 NEXIA Enrollment continued
XR724 USER GUIDE
Even though open networks (no password) and WEP WiFi encryption are supported, it is recommended to use a more
secure network encryption such as WPA2 or later.

12 18-HD82D1-1B-EN
XR724 NEXIA Enrollment continued
XR724 USER GUIDE

13
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XR724 Nexia WiFi Reconguration
XR724 NEXIA Enrollment continued
PRESS
PRESS
XR724 USER GUIDE

14 18-HD82D1-1B-EN
XR724 Nexia WiFi Reconguration continued
XR724 USER GUIDE

15
18-HD82D1-1B-EN
XR724 Nexia WiFi Reconguration continued
XR724 USER GUIDE

16 18-HD82D1-1B-EN
XR724 Nexia WiFi Reconguration continued
XR724 USER GUIDE

17
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XR724 Nexia WiFi Reconguration continued
XR724 USER GUIDE

18 18-HD82D1-1B-EN
XR724 INSTALLER’S GUIDE
MERCURY NOTICE
When this Comfort Control is replacing an old thermostat that contains mercury in a sealed tube, do not dispose
of your old thermostat in the trash. Dispose of properly. Contact your local waste management authority for
instructions regarding recycling and proper disposal of the old thermostat.
A listing of heating, ventilating and air conditioning wholesalers that participate in the Thermostat Recycling
Corporation’s recycling program are available at www.thermostat-recyle.org.
INSTALLATION AND WIRING
Temperature Sensing Considerations
The XR724 Control is designed for installation in climate controlled living spaces. It is recommended to place
the unit in central locations with good circulation. Avoid exterior walls and areas near windows, doors, vents or
concealed pipes
or chimneys.
PHYSICAL LOCATION
Incorrect
Placement
of the XR724
Ceiling Fan
Natural heat
dissipation
from the XR724
Touch Screen
Onboard
Thermistor
5 FEET
Optimum
Zone
2 FEET
Correct
Placement
of the 950
Correct
Placement
of the
XR724 Heat from the XR724 screen may be
trapped within the body of the XR724
control by an external top-down airflow
source, such as a ceiling fan.
The onboard thermistor may
be biased by this heat
causing the displayed indoor
temperature to be elevated.
PM
Fan
Cooling
Menu SchedMode
Hold
Cool
Auto
F
:

19
18-HD82D1-1B-EN
XR724 INSTALLER’S GUIDE
2Mark two mounting holes using new wall plate.
• Pull wires through hole in center of wall plate.
• Locate the new wall plate over existing opening.
• Mark two holes with pencil.
• Use a level to verify that the two hole locations are level.
• Correct hole locations as needed.
4Attach all wires securely to the new Comfort Control.
(See the Field Wiring Diagrams on the following pages.)
Note: A wire must be connected to “C” to power the Comfort Control.
• Use the information from the Field Wiring Diagrams to match the
wires to the correct terminals.
• Use 1/8” blade screwdriver to secure wires in terminals.
CAUTION: EQUIPMENT DAMAGE HAZARD
Improper wiring can lead to equipment damage. Use the eld wiring diagrams to ensure the Comfort Control is wired properly. After
wires are secure, bare wires MUST NOT touch each other. See the Field
Connection Wiring Diagrams on the following pages for specic system applications.
3Install new wall plate.
• Pull wires through hole in center of wall plate.
• Locate the new wall plate over existing opening.
• Attach wall plate to wall using two screws provided. Do not overtighten.
AUX/C
J2 AUX NC
C
R
W1
W2
O/B
G
BK
J2
J1
RS
RS
ODT
ODT
AUX NO
Y1
Y2 J1
AUX/C
J2 AUX NC
C
R
W1
W2
O/B
G
BK
J2
J1
RS
RS
ODT
ODT
AUX NO
Y1
Y2 J1
AUX/C
J2 AUX NC
C
R
W1
W2
O/B
G
BK
J2
J1
RS
RS
ODT
ODT
AUX NO
Y1
Y2 J1
6Turn power to heating and cooling system back on.
The Comfort Control display should turn on and begin displaying information.
Proceed to Installer’s Setup to congure system settings.
5Attach the Comfort Control face to the wall plate.
a. Carefully align the face plate to the wall plate while aligning pins
into wire terminals.
b. Once Comfort Control face is properly aligned, apply pressure at
top and bottom of
Comfort Control face until it is secure.
1
CAUTION: Before proceeding with installation, verify system power has been removed.
Separate the face of the new Comfort Control from the wall plate.
ÎNOTE: It is not recommended that this WiFi Comfort Control be mounted onto
metal structures. Metal may adversely affect the radio frequency (RF) communication
between the Comfort Control and the WiFi network .
CAUTION: ELECTRICAL HAZARD
AUX/C
J2 AUX NC
C
R
W1
W2
O/B
G
BK
J2
J1
RS
RS
ODT
ODT
AUX NO
Y1
Y2 J1
AUX/C
J2AUX NC
C
R
W1
W2
O/B
G
BK
J2
J1
RS
RS
ODT
ODT
AUXNO
Y1
Y2 J1

20 18-HD82D1-1B-EN
XR724 INSTALLER’S GUIDE
Heat/Cool Diagram 1: 1 or 2 Stage Cooling w/TAM7 Model Variable Speed Air Handler
or TAM9 24V mode
G
W1
YI (In)
R
B/C
Y2
BK
W2
Y 1
R
B
Y2
Notes:
1. Cut/remove the factory installed “BK” jumper at the indoor unit
2. “Y2” & “R” connections at outdoor are only required for two
stage units
3. Jumper “W2” to “W3” if three stages of indoor heat are available
4. “YI” and “YO” connections must be made as shown for freeze
protection and internally mounted condensate overflow circuits to
work properly
5. If third party condensate overflow switches are installed, they
should be wired between “Y1” of the thermostat and “YI” of the
airflow control board
Sensor Options in the Installer Settings/Sensor Settings menu
Remote Sensor (connect to the RS terminals)
- None
- Replaces internal sensor
- Average with internal sensor
Outdoor Temp Sensor (connect to the ODT terminals)
- None
- Outdoor
Caution: Do not run sensor wires in the same bundle with HVAC
wires. Keep away from high voltage wiring to avoid interference.
Remote Temperature Sensor Connections and Operation:
Aux relay
outputs
RS
C
RS
R
ODT
W1
W2
BK
ODT
NO
C
Y1
NC
Y2
O/B
G
Thermostat Connection
Outdoor
Sensor
Remote
Sensor
W3
YO
VS Air Handler &
Electric Heat
One or Two Stage
Cooling Only
(Note 1)
(Note 2)
(Note 2)
(Note 3)
(Note 5)
(Note 4)
Field Wiring Diagrams
Heat/Cool Diagram 2: 1 Stage Cooling w/GAM5A & TAM4 Model Air Handler
G
W1
YI (In)
R
B/C
W2
B
Y
Notes:
1. Jumper “W2” to “W3” if three stages of indoor heat are available
2. “YI” and “YO” connections must be made as shown for freeze
protection and internally mounted condensate overflow circuits to
work properly
3. If third party condensate overflow switches are installed, they
should be wired between “Y” of the thermostat and “YI” of the
airflow control board
Sensor Options in the Installer Settings/Sensor Settings menu
Remote Sensor (connect to the RS terminals)
- None
- Replaces internal sensor
- Average with internal sensor
Outdoor Temp Sensor (connect to the ODT terminals)
- None
- Outdoor
Caution: Do not run sensor wires in the same bundle with HVAC
wires. Keep away from high voltage wiring to avoid interference.
Remote Temperature Sensor Connections and Operation:
Aux relay
outputs
RS
C
RS
R
ODT
W1
W2
BK
ODT
NO
C
Y1
NC
Y2
O/B
G
Thermostat Connection
Outdoor
Sensor
Remote
Sensor
W3
YO
Non-VS
Air Handler &
Electric Heat
One Stage
Cooling Only
(Note 1)
(Note 2)
(Note 3)
O
Heat/Cool Wiring Diagrams