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
13 68-0311—02
4. Remove the wallplate from the wall and, if drywall, drill
two 3/16-in. holes in the wall, as marked. For firmer
material such as plaster, drill two 7/32-in. holes. Gently
tap anchors (provided) into the drilled holes until flush
with the wall.
5. Position the wallplate over the holes, pulling wires
through the wiring opening. See Fig. 18.
6. Insert the mounting screws into the holes and tighten.
Fig. 18. Mounting wallplate (THX9421).
Insert Coin Cell Battery in Thermostat
Place coin cell battery in thermostat. Be sure to follow polarity
markings on thermostat. See Fig. 19.
NOTE: Coin cell battery saves time and date during a
power loss.
Fig. 19. Insert coin cell battery (THX9421)
THX9421 Installation
INSTALLATION WITH EQUIPMENT INTERFACE MODULE
(EIM)
1. Wire to C and R terminals of the EIM or to a separate 24
volt transformer (not provided). See Fig. 20.
2. Snap thermostat onto wallplate after wiring is complete.
INSTALLATION WITH TRUEZONE WIRELESS ADAPTER
1. Wire to C and R terminals of the TrueZONE panel or to a
separate 24 volt transformer (not provided). See Fig. 20.
2. Snap thermostat onto wallplate after wiring is complete.
THX9321 Installation
THERMOSTAT WIRED DIRECTLY TO THE HVAC
EQUIPMENT OR ZONE PANEL
1. Refer to “THX9321 Thermostat Wiring Diagrams” begin-
ning on page 141.
2. Snap thermostat onto wallplate after wiring is complete.
INSTALLATION WITH EQUIPMENT INTERFACE MODULE
(EIM)
1. Connect power and common from the EIM to the Rc and
C terminals at the thermostat or use a separate 24 volt
transformer (not provided) to power the thermostat.
2. Snap thermostat onto wallplate after wiring is complete.
NOTE: Note: When the THX9321 thermostat is used with
an EIM, the relays in the thermostat do not func-
tion.
INSTALLATION WITH TRUEZONE WIRELESS ADAPTER
1. Connect power and common from the TrueZONE panel
to the Rc and C terminals at the thermostat or use a sep-
arate 24 volt transformer (not provided) to power the
thermostat.
2. Snap thermostat onto wallplate after wiring is complete.
NOTE: When the THX9321 thermostat is used with a
TrueZONE Wireless Adapter, the relays in the
thermostat do not function.
Fig. 20. Inserting wires in thermostat terminal screws
(THX9421).
MCR34688
R
C
1324