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
39 68-0311—07
3160 Backup Heat Cycles
Per Hour - Stage 2
1 to 12 CPH
Default varies
based on
heating
equipment type
selected
Both No ISU 3010 Temperature Control Options must
be set to Advanced to view or adjust cycle rate.
This ISU is only displayed when ISU 2070 or
2130 Backup Heat Stages is set to 2 stages.
Cycle rate limits the maximum number of times
the system can cycle in a 1 hour period
measured at a 50% load. For example, when
set to 3 CPH, at a 50% load, the most the
system will cycle is 3 times per hour (10
minutes on, 10 minutes off). The system cycles
less often when load conditions are less than or
greater than a 50% load. The thermostat
automatically defaults to the recommended
cycle rate based on the heating equipment type
that is used. You can change the cycle rate as
needed. Default for commonly used systems
are shown below.
Standard Efficiency Gas Forced Air = 5 CPH
High Efficiency Gas Forced Air = 3 CPH
Oil Forced Air = 5 CPH
Electric Forced Air = 9 CPH
Hot Water Fan Coil = 3 CPH
Hot Water Radiant Heat = 3 CPH
Geothermal Radiant Heat = 3 CPH
Steam = 1 CPH
Gravity = 1 CPH
3170 Cooling Throttling
Range
1° F to 30° F
2° F Commercial No The default Cooling Throttling range is 2° F
(1.5° C) which is appropriate for most
applications. Do not change this setting unless
advised to do so by Honeywell technical
support.
The throttling range controls the cycling of the
system and helps to compensate for load
changes, equipment sizing and thermostat
mounting location.
3180 Cooling Integral
0, 100 to 25,000 sec
10,000 sec Commercial No The default Cooling Integral is 10,000 seconds
which is appropriate for most applications. Do
not change this setting unless advised to do so
by Honeywell technical support.
The integral controls how much droop is used.
3190 Cooling Derivative
0, 100 to 25,000 sec
0 sec Commercial No The default Cooling Derivative is 0 seconds
which is appropriate for most applications. Do
not change this setting unless advised to do so
by Honeywell technical support.
The derivative makes adjustments to the
algorithm for fast acting systems.
3200 Heating Throttling
Range
1° F to 30° F
2° F Commercial No The default Heating Throttling Range is 2° F
(1.5° C) which is appropriate for most
applications. Do not change this setting unless
advised to do so by Honeywell technical
support.
The throttling range controls the cycling of the
system and helps to compensate for load
changes, equipment sizing and thermostat
mounting location.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes