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 58
9200 Dehumidification
Away Mode - Low
Limit Temperature
Setting
70° F to 80° F
76° F Both No If the cooling system is used to control
humidity while Dehumidification Away Mode is
active, the thermostat allows the cooling
system to lower the indoor air to the Low Limit
Temperature Setting to reach the
dehumidification setting at ISU 9200.
9200 Dehumidification
Away Mode -
Temperature Setting
70° F to 99° F
85° F Both No The temperature maintained while
Dehumidification Away Mode is active and the
desired humidity level is satisfied.
9200 Dehumidification
Away Mode -
Dehumidification
Setting
40% to 70% (in 5% increments)
65% Both No The desired humidity level while
Dehumidification Away Mode is active.
9210 Dehumidifier Filter
Replacement
Reminder
Off
30, 60, Calendar Days
3 to 12 Calendar Months (in 1
month increments)
Off Both No
10000 Ventilation Type
None
ERV / HRV
Passive (Fan Only)
Fresh Air Damper
None Both No None: The thermostat does not control
ventilation.
ERV/HRV: The thermostat controls an Energy
Recovery Ventilator or Heat Recovery Ventilator
for ventilation.
Passive (Fan Only): The thermostat turns on the
fan for ventilation.
Fresh Air Damper: The thermostat turns on the
fan and opens a fresh air damper for
ventilation.
10020 What Terminals are
Wired to the
Ventilator?
What Terminals are
Wired to the Fresh Air
Damper?
Note: Installer Setup
Name varies
depending on the
ventilation
equipment installed.
None
U1
U2
U3
Thermostat
defaults to the
next unused
universal
terminal (U1,
U2, U3).
Both No Number of Universal Outputs:
THX9321 Thermostat: U1 and U2 terminals
Equipment Interface Module (EIM): U1, U2 and
U3 terminals
U1, U2, U3 are dry contacts that require power.
See “Wiring IAQ Equipment or a Heat/Cool
Stage to the Universal Terminals” beginning on
page 152.
10050 Ventilation Control
Method
ASHRAE
Percent On Time
Defaults to
ASHRAE
when ISU 1010
Application is set
to Residential.
Percent on Time
is the only
choice when ISU
1010
Application is set
to Commercial.
Both No See “Ventilation Control Methods (ISU
10050)” beginning on page 114.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes