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THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ 2.0 WITH EIM
87 68-0311—01
COMMERCIAL FEATURES
The thermostat can be setup for residential or light commercial
applications (ISU 1010). When the thermostat is setup for
commercial, the thermostat meets commercial code, Title 24
and provides the following features:
• Commercial language (occupied and unoccupied)
• Temporary override (permanent hold is not allowed)
• Temporary override duration is limited to the amount set by
the installer
• Guide me through scheduling
• Adjustable ramp rates
• 365 holiday schedule
• Schedule up to 25 custom events
• Initiate occupancy
• Displays name on home screen
• Remote setback using an occupancy sensor
• Economizer or Time of Day output
• Pre-occupancy purge
• Additional dehumidification control options
Fig. 183.
Commercial Operation
Home Screen
Fig. 184. Quick reference to commercial display.
NOTE: Outdoor temperature and humidity are displayed
only if an optional outdoor air sensor is installed.
Program Schedules
These default Energy Saver settings can reduce expenses by
as much as 33%.
* Period 2 is cancelled by default. If you activate it, the values
shown above are default settings.
Program Schedule Override
To conserve energy, meet commercial code and be Title 24
compliant, the thermostat allows only a temporary override.
When the user overrides the temperature, the thermostat will
maintain the new temperature for 1 hour. The user can adjust
the hold until time up to the Hold Until time limit, which is set by
the installer in installer setup 4030.
Press or to change the temperature. It will be maintained
until the “hold” time you set.
Press OVERRIDE to use a pre-set “occupied” temperature if a
person is present during an unoccupied period. The new
temperature will be maintained for at least 1 hour, and can be
adjusted up to the maximum time set by the installer. To
change the time, press the HOLD UNTIL arrow buttons.
The programmed schedule will resume when the override timer
expires. To cancel the override at any time, press CANCEL
HOLD.
Display
home
screen
Change
date or
time
Outdoor
temperatu
re and
humidity
Current
system
status
Control
fan
operation
Select
system
type
Display
menu
options
Adjust
temperature
settings
Press to
override
program
temporarily
Thermostat
location and
current
program
status
Indoor
temperature
and humidity
Table 6. Commercial Use Default Schedule.
Period Start Time Heat Cool Fan
Occupied 1 8:00 am 70° 7° On
Unoccupied 1 10:00 pm 55° 85° Auto
Occupied 2* 12:00 am 70° 75° On
Unoccupied 2* 12:00 am 55° 85° Auto