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THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ 2.0 WITH EIM
41 68-0311—01
9100 High Humidity
Comfort Reset
Setting
1° F to 5° F 2° F Commercial No The thermostat uses the cooling system to reduce
humidity by lowering the temperature up to 5° F
below the current cool setpoint until the desired
humidity level is reached.
The thermostat keeps the temperature below the
cooling setpoint until the desired humidity level is
reached.
9120 System Modes
Allowing
Dehumidification
Check box on screen for each:
Heat
Cool
Off
Cool
Default varies
based on
heating/cooling
equipment
selected
Both No This ISU is only displayed when ISU 9000
Dehumidification Equipment is set to Dehumidifier.
Click boxes on screen to select which system
modes allow dehumidification. If a box is NOT
checked, the thermostat will NOT allow
dehumidification to operate in that mode.
Heat: Includes Heat, Emergency Heat and Auto. If
the system is in Auto mode, the thermostat will
allow dehumidification if the last call was for heat.
Cool: Includes Cool and Auto. If the system is in
Auto mode, the thermostat will allow
dehumidification if the last call was for cool.
Off: The thermostat will allow dehumidification
when the system setting is Off.
See “Dehumidification - Residential” beginning on
page 66 or “Dehumidification - Commercial”
beginning on page 70.
9130 Dehumidifier Fan
Control
Thermostat Controls Fan
Equipment Controls Fan
Thermostat
Controls Fan
Both No This ISU is only displayed when ISU 9000
Dehumidification Equipment is set to Dehumidifier.
Thermostat Controls Fan: The thermostat turns on
the dehumidifier and the fan when dehumidification
is needed.
Equipment Controls Fan: The thermostat turns on
the dehumidifier when dehumidification is needed.
The fan is controlled by the equipment.
9140 Dehumidifier Lockout Dehumidifier Allowed when Cool
is Running
Dehumidifier Not Allowed when
Cool is Running
Dehumidifier
Allowed when
Cool is Running
Both No This ISU is only displayed when ISU 9000
Dehumidification Equipment is set to Dehumidifier.
Dehumidifier Allowed when Cool is Running:
Dehumidifier can run when the cooling system is
on.
Dehumidifier Not Allowed when Cool is Running:
Dehumidifier can NOT run when the cooling system
is on.
9180 Dehumidification
Away Mode
Not Allowed
Allowed
Not Allowed Both No This ISU is NOT displayed when ISU 9000
Dehumidification Equipment is None.
ISU 9190 to 9200 are only displayed when ISU 9180
Dehumidification Away Mode is Allowed.
See “Dehumidification Away Mode” beginning on
page 69.
9190 Dehumidification
Away Mode - Fan
Control
Automatic
On
Circulate
Automatic Both No The On and Circulate settings may re-introduce
humidity into the living space.
9200 Dehumidification
Away Mode - Low
Limit Temperature
Setting
70° F to 80° F 76° F Both No If the cooling system is used to control humidity
while Dehumidification Away Mode is active, the
thermostat allows the cooling system to lower the
indoor air to the Low Limit Temperature Setting to
reach the dehumidification setting at ISU 9200.
9200 Dehumidification
Away Mode -
Temperature Setting
70° F to 99° F 85° F Both No The temperature maintained while Dehumidification
Away Mode is active and the desired humidity level
is satisfied.
9200 Dehumidification
Away Mode -
Dehumidification
Setting
40% to 70% (in 5% increments) 65% Both No The desired humidity level while Dehumidification
Away Mode is active.
Table 2. Installer Setup (ISU) Table. (Continued)
ISU
Number Installer Setup Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes