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
49 68-0311—02
5040 Which Sensors will
be used for
TEMPERATURE
Control? (Multiple
Sensors are
Averaged)
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)
Sensors are
Averaged
(Internal and
Remote)
Both No Select the sensors to be used for
temperature control. If you select more
than one, the thermostat will average the
temperature readings from each sensor.
See “Remote Indoor Sensors” beginning
on page 130.
5050 What Terminals are
Wired to the
Outdoor
Temperature
Sensor?
None
S1
S2
S3
S4
None Both Yes Wired Sensors requires an EIM (Equipment
Interface Module).
5070 What Terminals are
Wired to the Return
Air Temperature
Sensor?
None
S1
S2
S3
S4
None Both Yes Wired Sensors requires an EIM (Equipment
Interface Module).
5080 Return Air
Temperature
Sensor Type
10K
20K
10K Both Yes Wired Sensors requires an EIM (Equipment
Interface Module).
Select 10K or 20K based on the sensor
installed. Refer to resistance values below:
50062329-001 = 10K ohm
32005180-002 = 10K ohm
C7735A1000 = 10K ohm
C7770A = 20K ohm
C7041 = 20K ohm
5090 What Terminals are
Wired to the
Discharge Air
Temperature
Sensor?
None
S1
S2
S3
S4
None Both Yes Wired Sensors requires an EIM (Equipment
Interface Module).
5100 Discharge Air
Temperature
Sensor Type
10K
20K
10K Both Yes Wired Sensors requires an EIM (Equipment
Interface Module).
Select 10K or 20K based on the sensor
installed. Refer to resistance values below:
50062329-001 = 10K ohm
32005180-002 = 10K ohm
C7735A1000 = 10K ohm
C7770A = 20K ohm
C7041 = 20K ohm
5110 A-Coil Low
Temperature Cutoff
Off
35° F to 65° F (in 5° F increments)
Off Both Yes If an optional Discharge Air Temperature
sensor is used, this feature can help
prevent icing on the air conditioning A-Coil.
When temperature reaches the limit you
set, compressor(s) will shutoff while the
system fan continues to run, until the
temperature rises to a safe level.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes