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 30
3000 Changeover
Manual
Automatic
Manual:
if ISU 1010 is
Residential
Automatic:
if ISU 1010 is
Commercial
Both No Manual: The user must select heating or
cooling as needed to maintain the desired
indoor temperature.
Automatic: The user has the option to
select Auto for the system setting. In Auto
mode, the thermostat controls heating and
cooling equipment as needed to maintain
the desired indoor temperature.
3000 Deadband
2° F to 9° F (in 1° F increments)
3° F Both No This ISU is only displayed when ISU 3000
is set to Automatic.
Deadband is the minimum separation
between heat and cool settings when the
thermostat is setup for Auto Changeover.
For example, if the deadband is set to 3° F
and the cool setpoint is 75° F, the warmest
heat setpoint allowed would be 72° F. If the
heat setpoint is adjusted above 72° F, it will
automatically adjust the cooling setpoint
higher to maintain the 3° F deadband.
When ISU 9070 (Dehumidification - Over
Cooling Limit) or ISU 9100 (High Humidity
Comfort Reset Setting) is set to 1, 2, 3, 4 or
5° F, the thermostat will not show the full
Deadband range. For example, if you set a
Deadband of 3° F and an Over Cooling
Limit of 2° F, the minimum Deadband that
you can select will be 5 F. This prevents the
heating system from turning on when the
thermostat over cools to reach the
dehumidification setting.
3010 Temperature
Control Options
Basic Options
Advanced Options
Advanced Options + PID Settings
Basic Options Both No Basic Options: The Installer Setup displays
basic temperature control options which
include Backup Heat Differential, Backup
Heat Upstage Timer and Outdoor
Temperature Lockouts. Note: Outdoor
Temperature Lockouts only apply to Heat
Pump applications.
Advanced Options: The Installer Setup
displays both Basic and Advanced Options.
Advanced temperature control options
include Finish With High Cool Stage, Finish
With High Heat Stage, Temperature
Differential settings between all stages and
Cycle Rate settings per stage.
Advanced Options+PID Settings: The
Installer Setup displays both Basic and
Advanced Options including PID settings
which allow you to adjust the integral,
derivative and throttling range.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes