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Nexia Smart Home 

Comfort System  

Customer Service:  

 

 

For HVAC related 

issues, contact your 

servicing dealer

 

Î

NOTE:

 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 Specifications  .....................................................................................................16

Installation and Wiring  .....................................................................................................17

Physical Location  .............................................................................................................17

Field Wiring Diagrams ......................................................................................................18

Remote Temp Sensors .....................................................................................................35

Troubleshooting ................................................................................................................37

FCC/IC notice ...................................................................................................................38

Summary of Contents for NEXIA XR724

Page 1: ...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 Mod...

Page 2: ...pecifications XR724 Features Specification 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...

Page 3: ...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...

Page 4: ...H Target 10 to 45 40 Select the desired indoor relative humidity during heating mode Humidification must be enabled in the Installer Settings for this option to be available Once all selections have b...

Page 5: ...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 Settin...

Page 6: ...tries 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 butt...

Page 7: ...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 Dela...

Page 8: ...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...

Page 9: ...F 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...

Page 10: ...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 t...

Page 11: ...1B EN 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 W...

Page 12: ...12 18 HD82D1 1B EN XR724 NEXIA Enrollment continued XR724 USER GUIDE...

Page 13: ...13 18 HD82D1 1B EN XR724 Nexia WiFi Reconfiguration XR724 NEXIA Enrollment continued PRESS PRESS XR724 USER GUIDE...

Page 14: ...14 18 HD82D1 1B EN XR724 Nexia WiFi Reconfiguration continued XR724 USER GUIDE...

Page 15: ...15 18 HD82D1 1B EN XR724 Nexia WiFi Reconfiguration continued XR724 USER GUIDE...

Page 16: ...16 18 HD82D1 1B EN XR724 Nexia WiFi Reconfiguration continued XR724 USER GUIDE...

Page 17: ...17 18 HD82D1 1B EN XR724 Nexia WiFi Reconfiguration continued XR724 USER GUIDE...

Page 18: ...nsiderations 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...

Page 19: ...wall plate to wall using two screws provided Do not overtighten AU X C J2 AU X NC C R W1 W2 O B G BK J2 J1 RS RS OD T OD T AU X NO Y1 Y2 J1 AUX C J2 AUX NC C R W1 W2 O B G BK J2 J1 RS RS ODT ODT AUX...

Page 20: ...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 Fie...

Page 21: ...on Outdoor Sensor Remote Sensor W3 Non VS Air Handler Electric Heat One Stage Cooling Only Note 1 Note 2 O Non VS Air Handler Electric Heat Heat Cool Diagram 4 2 Stage Cooling w GAM5B Model Air Handle...

Page 22: ...In R B C Y B Notes 1 YI and YO connections must be made as shown for freeze protection and internally mounted condensate overflow circuits to work properly 2 If third party condensate overflow switche...

Page 23: ...W1 W2 BK ODT NO C Y1 NC Y2 O B G Thermostat Connection Outdoor Sensor Remote Sensor W3 Non VS Air Handler Electric Heat Heat Cool Diagram 8 1 Stage Cooling w TEM3 Model Air Handler G W1 R B C W2 One...

Page 24: ...iring to avoid interference Remote Temperature Sensor Connections and Operation Note 1 Note 4 Note 3 Aux relay outputs RS C RS R ODT W1 W2 BK ODT NO C Y1 NC Y2 O B G Thermostat Connection Outdoor Sens...

Page 25: ...gram 12 1 or 2 Stage Cooling w Variable Speed Gas Furnace G W1 Y1 R B C Y2 BK W2 One or Two stage Cooling Only Y1 R B Y2 Notes 1 Cut remove the factory installed BK jumper at the indoor unit 2 Y2 R co...

Page 26: ...14 1 or 2 Stage Cooling w Variable Speed Oil Furnace G W1 Y1 R B C Y2 BK W2 One or Two Stage Cooling Only Y1 R B Y2 Notes 1 Cut remove the factory installed BK jumper at the indoor unit 2 Y2 R connect...

Page 27: ...un sensor wires in the same bundle with HVAC wires Keep away from high voltage wiring to avoid interference Remote Temperature Sensor Connections and Operation Note 1 Note 2 Package Unit G W Y R B C A...

Page 28: ...Thermostat Connection Outdoor Sensor Remote Sensor O W3 X2 O YO Variable Speed Air Handler Electric Heat One or Two stage Heat Pump Note 2 Note 3 Note 4 Note 1 Variable Speed Air Handler Electric Hea...

Page 29: ...2 BK ODT NO C Y1 NC Y2 O B G Thermostat Connection Outdoor Sensor Remote Sensor O W3 X2 O Note 1 Note 2 Non VS Air Handler Electric Heat Heat Pump Diagram 4 2 Stage Heat Pump w GAM5B Model Air Handler...

Page 30: ...ram 6 1 Stage Heat Pump w GAF2 36M Model Air Handler G W1 YI R B C Y One stage Heat Pump Y R B Notes 1 YI and YO connections must be made as shown for freeze protection and internally mounted condensa...

Page 31: ...C RS R ODT W1 W2 BK ODT NO C Y1 NC Y2 O B G Thermostat Connection Outdoor Sensor Remote Sensor W3 X2 O Note 1 Non VS Air Handler Electric Heat Heat Pump Diagram 8 1 Stage Heat Pump w TEM3 Model Air H...

Page 32: ...sor 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 O W3 X2 O Note 2 Note 3 Note 1 Air Handler Electric He...

Page 33: ...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 X2 Note 1 Note 2 Package Unit G W1 Y R...

Page 34: ...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 O O X2 Note 1 Note 2 Note 3 Non VS One...

Page 35: ...x 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 O X2 O T T R1 Oil Burner Primary R1 Note 2 Note 1 Note 3 Note 4 Note 4 Non Variable Sp...

Page 36: ...in the same bundle with HVAC wires Keep away from high voltage wiring to avoid interference Remote Temperature Sensor Connections and Operation X2 Note 2 Note 1 Note 3 Package Unit G W1 Y R B C W2 Aux...

Page 37: ...a separate cable from the Comfort Control cable IMPORTANT Follow directions below for averaging These instructions replace the averaging information found in the Installer s Guide for the ZZSENSAL0400...

Page 38: ...tings Comfort Settings Menu Cooling will not come on 1 System mode is not set to Cool Auto or setpoint is set too high 2 Delta On for cooling is set too high 3 Minimum off time delay is being enforced...

Page 39: ...couraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the e...

Page 40: ...rature Order Number 18 HD82D1 1B EN File number 18 HD82D1 1B EN Supersedes New Date 08 30 19 Trane has a policy of continuous product and product data improvement and it reserves the right to change d...

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