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
31 68-0311—07
3021 Finish With High
Heat Stage
No
Yes
No Both No ISU 3010 Temperature Control Options must
be set to Advanced to view or adjust Finish With
High Heat Stage.
This ISU is only displayed when the thermostat
is set for 2 or more heat stages.
When set to Yes, this feature keeps the high
stage of the heating equipment running until
the desired setpoint is reached.
3030 Staging Control -
Cool Differential
Stage 2
Comfort
1.0° F to 3.5° F from setpoint (in
0.5° F increments)
Comfort Both No ISU 3010 Temperature Control Options must
be set to Advanced to view or adjust this ISU.
This ISU is only displayed when the thermostat
is set to 2 cool stages.
The indoor temperature must rise to the
selected differential setting before the
thermostat turns on the stage of cooling. For
example, if stage 2 is set to 2° F (1.0° C), the
indoor temperature must be 2° F (1.0° C) away
from the setpoint before stage 2 turns on.
When set to Comfort, the thermostat uses the
stage of cooling as needed to keep the indoor
temperature within 1° F (0.5° C) degree of the
setpoint.
3030 Staging Control -
Cool Differential
Stage 3
Comfort
1.0°F - 4.0°F from setpoint (in
0.5° F increments)
Comfort Commercial No ISU 3010 Temperature Control Options must
be set to Advanced to view or adjust this ISU.
This ISU is only displayed when the thermostat
is set to 3 cool stages.
The indoor temperature must rise to the
selected differential setting before the
thermostat turns on the stage of cooling. For
example, if stage 3 is set to 2° F (1.0° C), the
indoor temperature must be 2° F (1.0° C) away
from the setpoint before stage 3 turns on.
When set to Comfort, the thermostat uses the
stage of cooling as needed to keep the indoor
temperature within 1° F (0.5° C) degree of the
setpoint.
3030 Staging Control -
Cool Differential
Stage 4
Comfort
1.0° F to 4.5° F from setpoint (in
0.5° F increments)
Comfort Commercial No ISU 3010 Temperature Control Options must
be set to Advanced to view or adjust this ISU.
This ISU is only displayed when the thermostat
is set to 4 cool stages.
The indoor temperature must rise to the
selected differential setting before the
thermostat turns on the stage of cooling. For
example, if stage 4 is set to 2° F (1.0° C), the
indoor temperature must be 2° F (1.0° C) away
from the setpoint before stage 4 turns on.
When set to Comfort, the thermostat uses the
stage of cooling as needed to keep the indoor
temperature within 1° F (0.5° C) degree of the
setpoint.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes