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THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ 2.0 WITH EIM
68-0311—01 78
11. Select whether to Ventilate on High Indoor Humidity. See
“Ventilate on High Indoor Humidity (ISU 10160)” on
page 75 for more information. See Fig. 154.
Fig. 154.
Control Ventilation Level
1. Press MENU, then scroll to select Ventilation.
2. Press Setting to set the operating mode.
• Automatic: Ventilation runs as programmed by the
installer (ASHRAE or Percent On Time).
• Off: Ventilation remains off unless turned on by the
timer or from a Vent Boost Remote.
• On: Ventilation is always on.
3. Press or to run ventilation temporarily. The Tempo-
rary Boost (timer) setting range is 0–180 in 20 minute
increments. To turn Temporary Boost off, set to zero or
press Cancel Temporary Boost.
4. Press MORE SETTINGS to change maintenance
reminders or set outdoor lockouts (if set to Yes, ventila-
tion will not run when outdoor conditions exceed values
set by the installer).
NOTE: If set up for humidification in heat mode, the ven-
tilator will turn on to remove excess humidity if
10% or more above your humidity setting.
IAQ REMINDERS
You can set up IAQ reminders in the thermostat to remind
users when filters, pads, bulbs, etc. need cleaning or
replacement. The following reminders can be set:
•Air Filter 1
•Air Filter 2
• Humidifier Pad
• Humidifier Clean Tank / Water Filter
• Dehumidifier Filter
• Ventilator Core
• Ventilator Filter
• Electronic Air Cleaner Pre-Filter
• Electronic Air Cleaner Cells
• Electronic Air Cleaner Post-Filter
• UV Bulb 1
• UV Bulb 2
Reminders that are displayed under Preferences will change
based on the IAQ equipment installed. Reminders for
equipment that is already set up can be set using the steps
below. Reminders for IAQ equipment that is not yet set up must
be turned on from the installer setup.
NOTE: Air Filter, Humidifier Pad, Dehumidifier Filter, and
Ventilator Filter are displayed under Preferences
even if they have not been set up. Humidifier Pad
is not displayed if a steam humidifier has been
installed.
Some screens shown in this section may be different from
those on the thermostat, depending on how you set up IAQ
equipment.
1. Press MENU, then scroll to select Preferences.
2. Press Reminders. Fig. 155 is displayed.
Press MENU
Scroll to select VENTILATION
Set operating mode
Press More Settings to:
• Set outdoor lockouts (on or off)
• Turn off ventilation during the Sleep or Unoccupied
program period
• Review ventilator filter and ventilator core timer
Set temporary run time