Honeywell TH8321 Product Data page 15

ISU Installer Setup
Number Name
2° F to 9° F (in 1° F increments)
300 Auto Changeover
Deadband
Basic Options
301 Control Options
Advanced Options
No
302 Finish With High
Cool Stage Yes
No
302 Finish With High
Heat Stage Yes
Table 2. Installer Setup (ISU) Table. (Continued)
Settings Default
3° F
Basic Options
No
No
VISIONPRO® 8000 SMART THERMOSTAT
Residential,
Commercial
or Both
Both This ISU is only displayed when ISU 300 is set to
Automatic.
Deadband is the minimum separation between heat
and cool settings when the thermostat is setup for
Auto Changeover. For example, if the deadband is set
to 3° F and the cool setpoint is 75° F, the warmest
heat setpoint allowed would be 72° F. If the heat
setpoint is adjusted above 72° F, it will automatically
adjust the cooling setpoint higher to maintain the 3°
F deadband.
When ISU 907 or ISU 910 (Dehum Over Cooling
Limit) is set to 1, 2, 3, 4 or 5 F, the thermostat will
not show the full Deadband range. For example, if
you set a Deadband of 3 F and an Over Cooling Limit
of 2 F, the minimum Deadband that you can select
will be 5 F. This prevents the heating system from
turning on when the thermostat over cools to reach
the dehumidification setting.
Both Basic Options: The Installer Setup displays basic
temperature control options which include Backup
Heat Droop, Backup Heat Upstage Timer, Outdoor
Temperature Lockouts and Cycle Rate settings per
stage.
Note: Outdoor Temperature Lockouts only apply to
Heat Pump applications.
Advanced Options: The Installer Setup displays both
Basic and Advanced Options. Advanced temperature
control options include Finish With High Cool Stage,
Finish With High Heat Stage, and Temperature
Differential settings between all stages.
Both ISU 301 Control Options must be set to Advanced to
view or adjust Finish With High Cool Stage.
This ISU is only displayed when the thermostat is set
for 2 or more cool stages.
When set to Yes, this feature keeps the high stage of
the cooling equipment running until the desired
setpoint is reached.
Both ISU 301 Control Options must be set to Advanced to
view or adjust Finish With High Heat Stage.
This ISU is only displayed when the thermostat is set
for 2 or more heat stages.
When set to Yes, this feature keeps the high stage of
the heating equipment running until the desired
setpoint is reached.
15
Notes
33-00096—04