Spec Sheet
Table Of Contents
- Application
- Features
- Contents
- Specifications
- System Installation
- Installation Options
- Guidelines for Installing RedLINK Devices
- Installing Equipment Interface Module (if used)
- Wiring 24 Vac Common
- Selecting Discharge and Return Air Temperature Sensor Mounting Locations
- Selecting Return Air Temperature Sensor Mounting Location
- Installing Discharge and Return Air Temperature Sensors
- Selecting Thermostat Location
- Installing Wallplate
- Power Optional REDLINK™ Accessories
- Performing Initial Setup
- Linking Thermostat to Equipment Interface Module (if used)
- Linking RedLINK™ Accessories
- Completing Initial Setup
- Adding RedLINK Accessories to the Thermostat
- Locating the Connect Buttons on RedLINK Accessories
- Finding Your Password (Date Code) to Access Installer Options
- Installer Options
- Making Changes to Installer Setup
- Installer Tests
- Operation
- Setting the time/date
- Setting the fan
- Setting system mode
- Preset Energy-Saving Schedules
- Adjusting program schedules
- Overriding schedules: residential use
- Overriding schedules: commercial use
- Viewing equipment status
- Setting vacation hold: residential use
- Setting holiday/event schedules: commercial use
- Setting custom events: commercial use
- Setting holiday schedule: commercial use
- Setting holiday override: commercial use
- Initiating occupancy mode: commercial use
- Remote setback: commercial use
- Adjusting humidification settings
- Adjusting dehumidification settings: residential use
- Adjusting dehumidification settings: commercial use
- Adjusting ventilation settings
- Customizing screen color
- Setting preferences
- Cleaning the thermostat screen
- Adjusting security settings
- Viewing dealer information
- Advanced Features
- Installer options
- Using the temperature display
- Using the humidity display
- Universal Outputs (U1, U2, U3)
- Universal Inputs (S1, S2, S3, S4)
- Alerts and Diagnostics
- Heat Pump and Backup Heat Operation
- Indoor Air Quality (IAQ) Control
- IAQ Reminders
- Customizable Reminders
- USB Port
- Commercial Features
- Overriding schedules: commercial use
- Setting holiday/event schedules: commercial use
- Setting custom events: commercial use
- Setting holiday schedule: commercial use
- Setting holiday override: commercial use
- Initiating occupancy mode: commercial use
- Ramp Rates
- Custom Names
- Remote Setback
- Economizer and Time of Day (TOD) Operation
- Pre-Occupancy Purge
- Battery Replacement
- Optional Accessories
- Portable Comfort Control
- Remote Indoor Sensors
- Backup Control
- Replacing a Thermostat
- Replacing an Equipment Interface Module
- Wiring
- EIM Wiring Diagrams
- THX9321 Thermostat Wiring Diagrams
- THX9321 Thermostat Wiring Diagrams Using Universal Relays to Control Heating or Cooling
- Wiring IAQ Equipment or a Heat/Cool Stage to the Universal Terminals
- Economizer Module Wiring Diagrams
- Wiring C7089U1006 Outdoor Sensor
- Wiring guide — Wired Indoor Sensors
- Zoning
- Troubleshooting
- Regulatory Information
THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ WITH EIM
7 68-0311—07
* Prestige IAQ Kits and YTHM5421R1010 Kit include 50062329-001 Discharge/Return Air Sensors. Replacement Dis-
charge/Return Air Sensor part number is C7735A1000.
Occupancy Sensor
for Remote
Setback
(Requires an
Equipment
Interface Module)
WSK-24 Receiver:
- 5 to 140 °F
(-21 to 60 °C)
Door Sensor:
-4 to 140 °F
(-20 to 60 °C)
PIR Sensor:
-4 to 104 °F
(-20 to 40 °C)
- - - - Receiver:
3.6 x 3.4 x 1.2
(91.4 x 86.4 x 30.5)
Door Sensor:
1.4 x 2.3 x 0.6
(35.8 x 57.6 x 15.2)
PIR Sensor:
2.8 x 3.9 x 1.1
(71 x 100 x 28)
White
THX9421
Coverplate
(covers marks left
by old
thermostats)
THP2400A1027W
(Includes 2 cover
plates)
- - - - - - Small = 5-33/64 x 4-
21/64 (140 x 110), Large
= 6-7/8 x 5 (175 x 127)
White
THX9421
Coverplate
(covers marks left
by old
thermostats)
THP2400A1027B
(Includes 2 cover
plates)
- - - - - - Small = 5-33/64 x 4-
21/64 (140 x 110), Large
= 6-7/8 x 5 (175 x 127)
Black
THX9421
Coverplate
(covers marks left
by old
thermostats)
THP2400A1027G
(Includes 2 cover
plates)
- - - - - - Small = 5-33/64 x 4-
21/64 (140 x 110), Large
= 6-7/8 x 5 (175 x 127)
Gray
THX9321
Coverplate
(covers marks left
by old
thermostats)
50028399-001 - - - - - - 7-29/32 x 5-1/2 (201 x
140)
White
Wire Saver Module THP9045A1023 -40 to 163 °F
(-40 to 73 °C)
5% to 90%
Non-Condensing
-40 to 185 °F
(-40 to 85 °C)
- - Gray
Table 2. Thermostat Replacement Parts and Accessories. (Continued)
Product Part Number
Operating
Ambient
Temperature
Operating Relative
Humidity
Shipping
Temperature
Physical Dimensions in in.
(mm) Color(s)