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 48
5000 What Sensors are
WIRED to your
System?
Check box on screen for each:
Indoor Air Temperature
Outdoor Air Temperature
Return Air Temperature
Discharge Air Temperature
None Both Yes Wired Sensors requires an EIM (Equipment
Interface Module). This ISU is only
displayed if one of the S1-S4 terminals is
available.
Click boxes on screen to select which
sensors are wired to the S1-S4 terminals at
the EIM.
The thermostat will not display the Outdoor
Air Temperature option at ISU 5000 if a
wireless outdoor air sensor is connected.
The thermostat will not display the Indoor
Air Temperature option at ISU 5000 if 6
wireless indoor air sensors are connected.
If you have a wired Indoor Air Temperature
network (1, 4, 9 etc), the thermostat will
allow up to 5 wireless indoor air sensors.
The thermostat will not display the Return /
Discharge Air Temperature option at ISU
5000 if there is no fan in the system.
5010 Indoor
Temperature
Sensor Name
[Sensor Name]
Indoor Sensor Both Yes Wired Sensors requires an EIM (Equipment
Interface Module).
Enter a name (location) of the Wired Indoor
Air Temperature Sensor.
5020 What Terminals are
Wired to the Indoor
Temperature
Sensor?
None
S1
S2
S3
S4
None Both Yes Wired Sensors requires an EIM (Equipment
Interface Module).
5030 Indoor
Temperature
Sensor Type
10K
20K
10K:
if ISU 1010
Application is
Residential
20K:
if ISU 1010:
Application is
Commercial
Both Yes Wired Sensors requires an EIM (Equipment
Interface Module).
Select 10K or 20K based on the sensor
installed. Refer to resistance values below:
C7189U1005 = 10K ohm
C7772 = 20K ohm
TR21 = 20K ohm
TR21-A = 10K ohm (IMPORTANT - the
TR21-A must be used in combination with
a TR21 sensor or another TR21-A sensor
for the thermostat to calculate the correct
indoor temperature reading).
See “Wiring guide — Wired Indoor
Sensors” beginning on page 154 for
information on the sensor type you should
select based on how the sensors are wired.
For example, you would select 20K when
you have two TR21-A (10K) sensors wired
in series.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes