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
41 68-0311—07
4030 Override Duration
No Limit
1 to 12 Hours
3 hours Commercial No When the user presses the OVERRIDE button,
the thermostat will maintain the new
temperature for at least 1 hour. The user can
adjust the Hold Until time from 1 hour to the
amount set for the Override Duration (1-12
hours). Default setting is 3 hours. If set to No
Limit, the user can adjust the Hold Until time
up to 24 hours.
4050 Minimum Heat
Recovery Ramp Rate
Off
1° F/hr to 20° F/hr
5° F/hr Commercial No Off: The heating system will begin recovery at
the time that is scheduled.
When a Minimum Recovery Ramp Rate is set,
the thermostat will begin recovery early to
ensure the temperature is reached at the
scheduled time.
Set a Minimum Recovery Ramp Rate based on
the rate that the heating system can recover at
for a cold day in your region. Default setting is
5° F / hour.
If an outdoor sensor is installed, set an Outdoor
Temperature that is representative of a cold day
in your region to be associated with the
Minimum Recovery Ramp Rate. The thermostat
will begin recovery at the optimal time based on
a calculated ramp rate, allowing the system to
recover on time and save energy during
changing outdoor conditions.
During recovery, the setpoint changes at a rate
in degrees per hour depending on the outdoor
temperature. If there is no outdoor sensor, the
Minimum Recovery Ramp Rate is used.
4050 Outdoor
Temperature used
with Minimum Heat
Recovery Ramp Rate
Off
-20° F to 100°F
0° F Commercial No Off: The heating system will begin recovery at
the time that is scheduled.
When a Minimum Recovery Ramp Rate is set,
the thermostat will begin recovery early to
ensure the temperature is reached at the
scheduled time.
Set a Minimum Recovery Ramp Rate based on
the rate that the heating system can recover at
for a cold day in your region. Default setting is
5° F / hour.
If an outdoor sensor is installed, set an Outdoor
Temperature that is representative of a cold day
in your region to be associated with the
Minimum Recovery Ramp Rate. The thermostat
will begin recovery at the optimal time based on
a calculated ramp rate, allowing the system to
recover on time and save energy during
changing outdoor conditions.
During recovery, the setpoint changes at a rate
in degrees per hour depending on the outdoor
temperature. If there is no outdoor sensor, the
Minimum Recovery Ramp Rate is used.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes