VISIONPRO
®
8000 WITH WI-FI
®
31 33-00096—01
904 Dehum Wiring
U1
Thermostat defaults
to the unused
universal terminal
U1.
Both U1 are dry contacts that require power. See
“Wiring IAQ Equipment or a Heat/Cool Stage to
the Universal Terminals” beginning on page 86.
905 Dehum Terminal -
U1
Normally Closed
Normally Open
Defaults to Normally
Closed when ISU
900 Dehum
Equipment is A/C
with Low Fan
Defaults to Normally
Open when ISU 900
Dehum Equipment is
Hot Gas Bypass
Both Choose an option appropriate for the type of
equipment installed.
Normally Open: U1 will normally be open and
will close when the thermostat calls for
dehumidification.
Normally Closed: U1 will normally be closed
and will open when the thermostat calls for
dehumidification.
907 Dehum Over
Cooling Limit
0°, 1°, 2°, 3° F
3° F Residential This ISU is only displayed when ISU 900 Dehum
Equipment is set to A/C with Low Fan or A/C
with High Fan.
The thermostat uses the cooling system to
reduce humidity by lowering the temperature up
to 3° 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.
0° F is only an option when ISU 900 Dehum
Equipment is set to A/C with Low Fan.
908 DehumControl
Basic
Minimum On Time
Cooling Droop
Reheat
Basic Commercial See “Dehumidification - Commercial” beginning
on page 64.
909 Dehum Minimum
On Time
5 to 15 minutes
10 minutes Commercial This ISU is only displayed if ISU 908 Dehum
Control is set to Minimum On Time. This option
ensures that the compressor runs long enough
to effectively reduce humidity when the cooling
equipment is cycled on. The compressor will
run for the “minimum on time” you set until the
desired humidity level is reached.
910 Dehum Over
Cooling Limit
1° F to 5° F
2° F Commercial This ISU is only displayed if ISU 908 Dehum
Control is set to Cooling Droop. 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.
Table 2. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both Notes
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