VISIONPRO® 8000 SMART THERMOSTAT
33-00096—04
60
If set for A/C with Low Speed Fan, configure U1 as normally
open or normally closed (ISU 905) and wire to the Low
Speed Fan terminal on the equipment. For example, if the
U1 terminal is normally closed, it will open when the
thermostat calls for dehumidification.
NOTE:
The thermostat will not lower the fan speed when
the second stage of cooling is on.
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 900.
See Fig. 125.
Fig. 125.
Fig. 126.
2.
Select the terminals wired to the A/C with Low Speed
Fan. See Fig. 127.
Fig. 127.
3.
Select whether the U1 terminal are Normally Open or
Normally Closed. See Fig. 128.
• 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.
Fig. 128.
4.
Set the Overcooling Limit. See Fig. 129. Options:
• 0 °F to 3 °F (A/C with Low Speed Fan)
• 1 °F to 3 °F (A/C with High Speed Fan)
Fig. 129.
NOTE:
ISU 1014 gives the option to lockout ventila-
tion on calls for dehumidification. This helps
maintain the desired humidity level.
Dehumidification using a Whole House
Dehumidifier
The Whole House Dehumidifier option requires a dedicated
unit for dehumidification. The thermostat can be set to
control dehumidification in all modes (Heat, Off, Cool [ISU
912]).
Set up Dehumidification With Whole
House Dehumidifier
Some screens shown in this section may not appear on the
thermostat, depending on how you set up
dehumidification.
