Honeywell Home THX9321 Prestige 2.0 Manual page 104

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THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE
• Low Speed Fan with Cool Stage 1 Only - when the
thermostat is set to humidify with low speed fan, and
humidity is high, and cooling is running at stage 1,
always run with the low speed fan. When cooling goes to
stage 2, it ramps up to high speed fan.
• Low Speed Fan Always - Regardless of which cooling
stage is active, the thermostat will exclusively use the
low speed fan when dehumidifying.
• User Selectable - The homeowner can set the high
speed fan priority based on their comfort level
(reachable via Menu > Dehumidification > More
Settings)
If set to 10, the thermostat will always use the high speed
fan and never switch into low speed mode operation. If set
to 1, the thermostat will only use the low speed fan and
never switch to the high speed fan. See "Dehumidification
Fan Speed Priority" beginning on page 103.
Set Up Dehumidification with Cooling
System
Some screens shown in this section may not appear on the
thermostat, depending on how you set up
dehumidification.
1. Select the Dehumidification Equipment in ISU 9000.
See Fig. 220.
Fig. 220.
2. If optional remote wireless indoor sensors are
installed, you can choose which sensor you want to
use for dehumidification control. For example, you
can use one sensor for humidification control, and
another for dehumidification. See "Wireless Indoor
Sensor" beginning on page 130 for more informa-
tion.
Fig. 221.
68-0311—08
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IAQ WITH EIM
3. If you are sensing humidity from two separate loca-
tions (one for humidification and another for dehu-
midification), you can select which humidity reading
to display on the home screen. See "Wireless Indoor
Sensor" beginning on page 130 for more informa-
tion.
4. Select the terminals wired to the A/C with Low Speed
Fan. See Fig. 223.
5. Select whether the U1, U2, or U3 terminals are Nor-
mally Open or Normally Closed. See Fig. 224.
• Normally Open – contacts are normally open and
will close during a call for dehumidification
• Normally Closed – contacts are normally closed
and will open during a call for dehumidification.
104
Fig. 222.
Fig. 223.
Fig. 224.