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
135 68-0311—02
WIRING
See Table 13 for Equipment Interface Module terminal descriptions and Table 14 for thermostat terminal descriptions.
* Remove jumpers when separate transformers are used.
†
See “Wiring IAQ Equipment or a Heat/Cool Stage to the Universal Terminals” beginning on page 149 or “Wiring IAQ Equipment or
a Heat/Cool Stage to the Universal Terminals” beginning on page 149.
‡
See “Dry Contact Alerts” beginning on page 95 for wiring Dry Contact Devices to display alerts.
Table 13. Equipment Interface Module Terminal Designation Descriptions.
Conventional System Heat Pump
Terminal Description Terminal Description
C Common wire from 24 VAC transformer. C Common wire from 24 VAC transformer.
R* Power wire from 24 VAC transformer. R Power wire from 24 VAC transformer.
RH* Heating power RH Heating power
RC* Cooling power RC Cooling power
W Heat Stage 1 O/B Changeover valve for heat pumps
W2 Heat Stage 2 AUX 1 Backup Heat Stage 1/Emergency Heat Stage 1
W3 Heat Stage 3 AUX 2 Backup Heat Stage 2/Emergency Heat Stage 2
Y Compressor Stage 1 Y Compressor Stage 1
Y2 Compressor Stage 2 Y2 Compressor Stage 2
G Fan Relay G Fan Relay
A Connect to Economizer Module or Lighting Panel
(TOD).
L/A Connect to Compressor Monitor, Zone Panel,
Economizer Module or Lighting Panel (TOD).
U1 / U1
†
U2 / U2
†
U3 / U3
†
Universal relay for humidification,
dehumidification, ventilation, or a stage of
heating/cooling. U terminals are dry contacts that
require power.
U1 / U1
†
U2 / U2
†
U3 / U3
†
Universal relay for humidification,
dehumidification, ventilation, or a stage of
heating/cooling. U terminals are dry contacts that
require power.
S1 / S1
‡
S2 / S2
‡
S3 / S3
‡
S4 / S4
‡
Universal input for a wired indoor sensor, outdoor
sensor, discharge sensor, return sensor, dry
contact device for alerts or dry contact device for
remote setback.
S1 / S1
‡
S2 / S2
‡
S3 / S3
‡
S4 / S4
‡
Universal input for a wired indoor sensor, outdoor
sensor, discharge sensor, return sensor, dry
contact device for alerts or dry contact device for
remote setback.
A
B
C
D
Connect to THM4000R1000 Wireless Adapter for
extended wireless range.
A
B
C
D
Connect to THM4000R1000 Wireless Adapter for
extended wireless range.