THX9321 & THX9421 Product Data
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—02 56
8100 Clean Tank / Water
Filter Replacement
Reminder
Off
60 Run Time Days
90 Run Time Days
6 Calendar Months
12 Calendar Months
Off Both No This ISU is only displayed if ISU 8000
Humidifier Type is Steam.
Run Time Days are not shown if ISU 8000
Humidifier Type is set to None.
8100 Humidifier Pad
Replacement
Reminder
Off
60 Run Time Days
90 Run Time Days
6 Calendar Months
12 Calendar Months
Off Both No This ISU is only displayed if ISU 8000
Humidifier Type is Bypass or Fan Powered.
Run Time Days are not shown if ISU 8000
Humidifier Type is set to None.
9000 Dehumidification
Equipment
Residential:
None
A/C with Low Speed Fan
A/C with High Speed Fan
Whole House Dehumidifier
Commercial:
None
A/C with Low Speed Fan
A/C with High Speed Fan
Hot Gas Bypass
Dehumidifier
None Both No See “Dehumidification - Residential”
beginning on page 105 or
“Dehumidification - Commercial”
beginning on page 109.
9010 Which Sensor will
be used for
Dehumidification
Control?
Thermostat (Internal)
Sensor Name (Remote)
Sensor Name (Remote)
Sensor Name (Remote)
Sensor Name (Remote)
Sensor Name (Remote)
Sensor Name (Remote)
(Up to 6 Remote Sensors)
Thermostat
(Internal)
Both No Select a sensor to control dehumidification
(thermostat or an optional remote sensor).
If multiple sensors are installed, you can
use a different sensor for humidification
control. See “Dehumidification control”
beginning on page 130.
Note: Humidity sensing cannot be
averaged.
9020 Which Indoor
Humidity Sensor
should be
displayed on the
Home Screen?
Humidification Sensor
Dehumidification Sensor
Humidification
Sensor
Both No This ISU is only displayed when separate
humidity sensors are used to control
humidification and dehumidification. Only
one of the sensors can be displayed on the
home screen. Select either the
Humidification Sensor or the
Dehumidification Sensor.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes