Honeywell PRESTIGE THX9321 - Manual (Page 42)

THX9321 PRESTIGE ® 2.0 AND THX9421 PRESTIGE ® IAQ WITH EIM
68-0311—02 42
4020 Type of Override Standard
Initiate Occupancy Standard Commercial 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.
4030 Override Duration No Limit
1 to 12 Hours 3 hours Commercial 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.
4050 Minimum Heat
Recovery Ramp
Rate
Off
1° F/hr to 20° F/hr 5° F/hr Commercial 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.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes