Honeywell TH8321 Product Data page 30

VISIONPRO® 8000 SMART THERMOSTAT
ISU Installer Setup
Number Name
Normally Closed
905 Dehum Terminal -
U1 Normally Open
0°, 1°, 2°, 3° F
907 Dehum Over
Cooling Limit
Basic
908 DehumControl
Minimum On Time
Cooling Droop
Reheat
5 to 15 minutes
909 Dehum Minimum
On Time
1° F to 5° F
910 Dehum Over
Cooling Limit
33-00096—04
Table 2. Installer Setup (ISU) Table. (Continued)
Settings Default
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
3° F
Basic
10 minutes
2° F
Residential,
Commercial
or Both
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.
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.
Commercial See "Dehumidification - Commercial" beginning on
page 63.
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.
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.
30
Notes