Spec Sheet
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—07 34
3080,
3090
Staging Control -
Backup Heat
Differential Stage 2
Comfort
2.0° F to 15.5° F from setpoint (in
0.5° F increments)
Comfort Both No ISU 3010 Temperature Control Options must
be set to Advanced to view or adjust Backup
Heat Differential Stage 2.
This ISU is only displayed if there are 2 backup
heat stages.
The indoor temperature must drop to the
selected differential setting before the
thermostat will turn on backup heat stage 2.
For example, if backup heat stage 2 is set to 2°
F (1.0° C), the indoor temperature must be 2° F
(1.0° C) away from the setpoint before backup
heat stage 2 turns on. When set to Comfort, the
thermostat will use backup heat stage 2 as
needed to keep the indoor temperature within
1° F (0.5° C) degree of the setpoint.
3110 Backup Heat
Upstage Timer
Off
(30, 45, 60, 75, 90) minutes
(2, 3, 4, 5, 6, 8, 10, 12, 14, 16)
hours
Off Both No The Backup Heat Upstage Timer starts when
the highest stage of the previous heating
equipment type turns on. Backup heat will be
used (if needed) when the timer expires. See
“Backup Heat Upstage Timer” beginning on
page 99.
This ISU is only displayed when Backup Heat
Differential Stage 1 is set to 2 F or higher (ISU
3080, 3090).
3110 Backup Heat Holdoff
Timer
Auto, 15, 30, 45, 60, 75, 90, 105,
120 minutes
Auto Both Yes The Backup Heat Holdoff Timer starts when the
highest stage of the previous heating
equipment type turns on. Backup heat will be
used (if needed) when the timer expires. See
“Backup Heat Holdoff Timer” on page 98.
This ISU is only displayed when upstage timer is
set to 30 minutes or longer.”
3120 Outdoor
Temperature
Lockouts:
Compressor Lockout
/ Balance Point
Off
-15° F to 60° F (in 5° F
increments)
Off
(See Notes)
Both No ISU 3120 Compressor Lockout / Balance Point
requires an outdoor sensor.
Default is 40 F if ISU 2010 Heating Equipment
Type is Air to Air Heat Pump and ISU 2180
Backup Type is gas or oil forced air.
Default is Off if ISU 2010 Heating Equipment
Type is Air to Air Heat Pump and ISU 2180
Backup Type is electric forced air.
Default is Off if ISU 2010 Heating Equipment
Type is Geothermal Heat Pump or Geothermal
Radiant Heat.
Compressor Lockout / Balance Point is
optional for any type of heat pump (Air to Air
Heat Pump, Geothermal Heat Pump or
Geothermal Radiant Heat).
See “Heat pump with outdoor temperature
lockouts” beginning on page 100.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes