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—07 116
5. If ASHRAE was selected for ISU 10050, select the
Number of Bedrooms and Size of House. See Fig.
257.
Fig. 257.
6. If ASHRAE was selected for ISU 10050, enter the
Equipment Ventilation Rate (CFM). Be sure this set-
ting corresponds with the actual ventilator speed.
This setting determines how often the ventilation
equipment will operate to meet the ASHRAE 62.2
Standard. The thermostat will indicate the following
based on the Equipment Ventilation Rate, Square
Footage and Number of Bedrooms. See Fig. 258.
• Provides an indication if it meets or does not meet
the ASHRAE 62.2 Standard.
• Provides% run time that is needed to meet the
ASHRAE 62.2 Standard.
Fig. 258.
7. Select a Ventilation Priority (see Fig. 259):
c. Lockouts are Priority: The thermostat places a
priority on lockouts versus the ASHRAE 62.2 ven-
tilation standard. The thermostat will not run
ventilation during the following lockout condi-
tions (if configured) unless you manually call for
ventilation:
(1) Lockout Ventilation during Outdoor Condi-
tions (ISU 10130)
(2) Lockout Ventilation on Humidification or
Dehumidification Calls (ISU 10140)
(3) Lockout Ventilation during “Sleep” (Residen-
tial) or “Unoccupied” (Commercial) program
periods. Note: This option is set by the user on
the Ventilation screen in the Menu.
d. ASHRAE is Priority: ASHRAE requires additional
ventilation following a long off cycle. The ther-
mostat meets the ASHRAE 62.2 ventilation stan-
dard by running additional ventilation when
outdoor conditions are favorable. If ASHRAE
cannot be met when outdoor conditions are
favorable, the thermostat will override the out-
door lockouts and run ventilation. When using
this option, it is recommended to increase the
rate (CFM) of the ventilation equipment to meet
the ASHRAE 62.2 ventilation standard in a
shorter run time.
NOTE: ISU 10140 “Lockout Ventilation on Humidi-
fication or Dehumidification Calls” is not an
option when you select “ASHRAE is Priority”.
The ability to lockout ventilation during the
“Sleep” or “Unoccupied” program periods is
not an option when you select “ASHRAE is
Priority”.
Fig. 259.