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
33 68-0311—07
3060 Staging Control -
Compressor Heat
Differential Stage 1
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 if ISU 2010 Heating
Equipment Type is Geothermal Radiant Heat
and ISU 2050 Geothermal Forced Air System is
set to Used for Heating and Cooling.
The indoor temperature must drop to the
selected differential setting before the
thermostat will turn on the stage of heating. For
example, if stage 1 is set to 2° F (1.0° C), the
indoor temperature must be 2° F (1.0° C) away
from the setpoint before stage 1 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.
3060 Staging Control -
Compressor Heat
Differential Stage 2
Comfort
1.0° F to 4.5° 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 Air to Air Heat Pump,
Geothermal Heat Pump or Geothermal Radiant
Heat and there are 2 compressor 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.
3080,
3090
Staging Control -
Backup Heat
Differential Stage 1
Note: “Stage 1" is not
displayed if there is
only 1 stage of
Backup Heat.
Comfort
2.0° F to 15.0° F from setpoint (in
0.5° F increments)
Comfort Both No A backup heat differential can be set on any
system that has more than one heating
equipment type.
See “Backup Heat Differential (Droop)”
beginning on page 97.
The Comfort setting is only available on
systems when the Backup Heat Type is Allowed
to Run with the Primary Heat (Heat Pump). For
example, Heat Pumps with Electric Forced Air
Backup Heat.
The Comfort setting is NOT available for Dual
Fuel systems. For example, Heat Pumps with
Gas Forced Air.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes