VISIONPRO® IAQ TOTAL HOME COMFORT SYSTEM
68-0287—1 16
374 Hum Fan Action 0
1
2
3
Humidify only while fan or heat is on
Humidify will force fan on
Humidify only when heat is on
Humidifier operates independent of fan
Setting 0 will run the humidifier only during a call for
heat or if the fan is running.
Setting 1 will force the fan to run if there is a call for
humidification.
Setting 2 will humidify only during a call for heat.
Setting 3 assumes the humidifier has it own internal
fan and will not require the system fan or heat to be
operating during a call for humidification.
379 Dehumidification
Control
0
1
3
None
Dehumidify with Air Conditioning
Whole house Dehumidifier
Option 1 uses dehum terminal as a normally closed
relay to wire to a low-speed fan terminal.
Option 3 uses dehum terminal as a normally open
relay to wire to a whole-house dehumidifier.
383 Over-Cooling
Limit 10.5
21.0
31.5
1°F 0.5°C
2°F 1.0°C
3°F 1.5°C
(Show 1/2 degree C)
Only shown if ISU379 = 1.
384 Dehumidification
Fan Action
0
1
System fan turns on with dehumidifier
Dehumidifier operates independent of system fan
Only shown if ISU379 = 3.
390 Southern
Dehumidification
Away Mode
0
1
No
Yes
Not shown if ISU379 = 0.
ISU 391-394 will only be shown if ISU390 = 1.
391 Southern
Dehumidification
Away Mode Fan
Setting
0
1
2
Fan Auto
Fan On
Fan Circulate
If ISU391 = 1 or 2 to help remove condensation from
the air handler and the A-coil, some humidity may be
re-introduced into the living space.
392 Southern
Dehumidification
Away Mode Low
Limit
Temperature
Setting
70-80 70°F–80°F
Default = 76°F
The air conditioner will be allowed to cool the living
space to this temperature to meet the humidity setting
that set in ISU394.
393 Southern
Dehumidification
Away
Temperature
Setting
70-99 70°F–99°F
Default = 85°F
The A/C will maintain this temperature provided the
humidity setting is satisfied. This temperature setting
can not be set lower than the temperature set in ISU
392.
394 Southern
Dehumidification
Away
Dehumidification
Setting
55-70 55%–70% relative humidity
Default = 65%
Set the desired humidity level to maintain within the
living space
400 Ventilation control0
1
2
No ventilation
Ventilation on at all times
Ventilation on except during sleep period
If ISU300 = 0, ISU401-405 will not be shown.
401 Number of
bedrooms
1-6 1–6 bedrooms
Default = 2
402 Total house
Sq. Ft.
10-50 1000–5000 sq. ft. in increments of 100
Default = 1000 sq. ft.
403 Ventilation CFM 30-195 30–195 CFM in increments of 5
Default = 160 CFM
404 Max ventilation
percentage limit
30-60
100
30%–60%
Default = 50%
unlimited
The thermostat will determine if ventilation is meeting
ASHRAE standard 62.2. The display will show a P
above the setup number if the setting passes the
ASHRAE standard, or F if it does not. Best practice is
to move the setting down until F is displayed, then
move up one setting to the minimum passing value.
405 Ventilation Fan
Action
1
2
Vent on will force fan on also
Vent will not force fan ON
406 Ventilation in
High Humidity
0
1
Off
On
Only shown if ISU372 and ISU400 are not set to 0.
When set to On will use ventilation to remove humidity
when thermostat is in the heat mode.
Table 3. Installer Setup Menu. (Continued)
ISU
Parameter
Number
Installer Setup
Name
Settings
(Factory Defaults Shown in Bold) Notes