Honeywell THX9321 Prestige 2.0 Product Data page 30

®
THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE
ISU Installer Setup
Number Name
3000 Changeover
3000 Deadband
3010 Temperature
Control Options
68-0311—02
Table 4. Installer Setup (ISU) Table. (Continued)
Settings
Manual
Automatic
2° F to 9° F (in 1° F increments)
Basic Options
Advanced Options
Advanced Options + PID Settings
®
IAQ WITH EIM
Residential,
Commercial
Default or Both
Manual: Both
if ISU 1010 is
Residential
Automatic:
if ISU 1010 is
Commercial
3° F Both
Basic Options Both
30
Requires
EIM Notes
No Manual: The user must select heating or
cooling as needed to maintain the desired
indoor temperature.
Automatic: The user has the option to
select Auto for the system setting. In Auto
mode, the thermostat controls heating and
cooling equipment as needed to maintain
the desired indoor temperature.
No This ISU is only displayed when ISU 3000
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 9070 (Dehumidification - Over
Cooling Limit) or ISU 9100 (High Humidity
Comfort Reset Setting) 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.
No Basic Options: The Installer Setup displays
basic temperature control options which
include Backup Heat Differential, Backup
Heat Upstage Timer and Outdoor
Temperature Lockouts. 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, Temperature
Differential settings between all stages and
Cycle Rate settings per stage.
Advanced Options+PID Settings: The
Installer Setup displays both Basic and
Advanced Options including PID settings
which allow you to adjust the integral,
derivative and throttling range.