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 32
3040 Staging Control -
Radiant Heat
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 if ISU 2010 Heating
Equipment Type is Geothermal Radiant Heat
and there are 2 radiant heat stages.
The indoor temperature must drop to the
selected differential setting before the
thermostat will turn on the stage of heating. 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 will use
the stage of heating as needed to keep the
indoor temperature within 1° F (0.5° C) degree
of the setpoint.
3050 Staging Control -
Heat Differential
Stage 2
Note: Depending on
the application, the
text displayed on the
screen may show the
specific heating
equipment type
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 for conventional
systems that have 2 heat stages.
The indoor temperature must drop to the
selected differential setting before the
thermostat will turn on the stage of heating. 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 will use
the stage of heating as needed to keep the
indoor temperature within 1° F (0.5° C) degree
of the setpoint.
3050 Staging Control -
Heat Differential
Stage 3
Note: Depending on
the application, the
text displayed on the
screen may show the
specific heating
equipment type
Comfort
1.0° F to 4.0° 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 for conventional
systems that have 3 heat stages.
The indoor temperature must drop to the
selected differential setting before the
thermostat will turn on the stage of heating. 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 will use
the stage of heating 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