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
68-0311—07 82
NOTE: Do NOT spray any liquid directly on the thermo-
stat. Spray liquids onto a cloth, then use the damp
cloth to clean the screen. Use water or household
glass cleaner. Avoid abrasive cleansers.
Adjusting security settings
You can adjust security options to prevent unauthorized
changes to system settings.
1. Touch MENU and select Security Settings.
Fig. 134.
2. Select Change Lock Mode.
Fig. 135.
3. Select an option and follow prompts:
• Unlocked: Full access allowed.
• Partially locked: Only temperature can be
changed.
• Fully locked: No access allowed.
Fig. 136.
NOTE: If you choose to use a password for additional
security, write it here for reference:
Viewing dealer information
Check dealer information if you need to contact your
installer for maintenance, repairs, or upgrades.
1. Touch MENU.
2. Select Dealer Information.
Fig. 137.
3. Touch Done to return to the menu.
Fig. 138.
Temporary Schedule Changes
Use the thermostat to set temporary schedule changes
that impact the regular schedule for the heating/cooling
system. This feature is useful if your daily schedule
sometimes changes.
Select an option, then follow screen prompts to conserve
energy while you’re away and maintain a comfortable
climate after you return.
After the times you set, the normal program schedule will
resume.
• Stay Home From Work: Ignores the “Away” period and
keeps the temperature at a comfortable level
throughout the day.
• Return Home Early: Shortens the “Away” period and
applies evening temperature settings earlier than
usual.
MENU
Security Sengs
Change Lock Mode
MENU
Dealer Informaon