Honeywell THX9321 Prestige 2.0 Product Data page 42

®
THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE
ISU Installer Setup
Number Name
4020 Type of Override
4030 Override Duration
4050 Minimum Heat
Recovery Ramp
Rate
68-0311—02
Table 4. Installer Setup (ISU) Table. (Continued)
Settings
Standard
Initiate Occupancy
No Limit
1 to 12 Hours
Off
1° F/hr to 20° F/hr
®
IAQ WITH EIM
Residential,
Commercial
Default or Both
Standard Commercial
3 hours Commercial
5° F/hr Commercial
42
Requires
EIM Notes
No Standard:
The system maintains temperatures
programmed for the occupied and
unoccupied time periods. Pressing
OVERRIDE will allow the user to make a
temporary schedule change.
Initiate Occupancy:
The system maintains temperature at an
energy saving level until the Press to Start
Occupancy button is pressed by the user.
The system will then maintain a
comfortable temperature until the occupied
period ends. This option is recommended
for cost savings when the workplace is
used infrequently or arrival times change
from day to day (example - schools). Once
the occupancy is activated by pressing the
Press to Start Occupancy button, the user
will still be able to perform a standard
OVERRIDE of the schedule.
No When the user presses the OVERRIDE
button, the thermostat will maintain the
new temperature for at least 1 hour. The
user can adjust the Hold Until time from 1
hour to the amount set for the Override
Duration (1-12 hours). Default setting is 3
hours. If set to No Limit, the user can
adjust the Hold Until time up to 24 hours.
No Off: The heating system will begin recovery
at the time that is scheduled.
When a Minimum Recovery Ramp Rate is
set, the thermostat will begin recovery
early to ensure the temperature is reached
at the scheduled time.
Set a Minimum Recovery Ramp Rate
based on the rate that the heating system
can recover at for a cold day in your region.
Default setting is 5° F / hour.
If an outdoor sensor is installed, set an
Outdoor Temperature that is representative
of a cold day in your region to be
associated with the Minimum Recovery
Ramp Rate. The thermostat will begin
recovery at the optimal time based on a
calculated ramp rate, allowing the system
to recover on time and save energy during
changing outdoor conditions.
During recovery, the setpoint changes at a
rate in degrees per hour depending on the
outdoor temperature. If there is no outdoor
sensor, the Minimum Recovery Ramp
Rate is used.