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 60
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 149.
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 112.
10060 Ventilation Fan
Control
Thermostat Controls Fan
Equipment Controls Fan
Thermostat
Controls Fan
Both No Thermostat Controls Fan: The thermostat
turns on the ventilation equipment and the
fan when ventilation is needed.
Equipment Controls Fan: The thermostat
turns on the ventilation equipment when
ventilation is needed. The fan is controlled
by the equipment.
10090 Number of
Bedrooms
1 to 6
2 bedrooms Residential No This ISU is only displayed when ISU10050
Ventilation Control Method is set to
ASHRAE (Residential only).
10090 Size of House
1000 to 5000 sq. ft. (in 100 sq. ft.
increments)
(90 to 460 sq. m.)
1000 sq. feet Residential No This ISU is only displayed when ISU10050
Ventilation Control Method is set to
ASHRAE (Residential only).
10100 Enter Equipment
Ventilation Rate
30 to 350 CFM (in 5 CFM
increments)
(850 - 9900 LPM)
150 Residential No This ISU is only displayed when ISU10050
Ventilation Control Method is set to
ASHRAE (Residential only).
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes