VISIONPRO
®
IAQ TOTAL HOME COMFORT SYSTEM
25
68-0287—04
a
Humidification only operates in heating or when last call was for heating.
b
Dehumidification only operates in cooling or when last call was for cooling.
c
Must be set up in installer setup (ISU 379) for dehumidification with air conditioning.
d
Installer setup (ISU 406) must be setup for Ventilation in high humidity or nothing will happen.
e
Only with whole house dehumidifier.
Multi-Stage Heat and Cool Control
In a multi-stage system, while maintaining setpoint, several
factors affect when the next stage energizes, such as load
conditions, environmental conditions, P+I control, and home
insulation. The next stage energizes when the thermostat
senses the previous stage is running at 90% capacity. This
operation is droopless control.
User Setup
Follow these steps to enter the User Setup:
1.
Press and release the System key.
2.
Press and hold the center blank key for approximately
five seconds until the screen changes.
3.
Release the center blank key when the screen on the
thermostat matches the screen below.
Table 7. Indoor Air Quality Operation.
System Setting
Call For Action
Last call
Energize
terminals
Heat
Cool
Auto
Humidification
HUM1 and HUM2 Close
a
Nothing
a
None
Auto
Dehumidification
Nothing
b
DHM1 and DHM2 close
e
None
Auto
Dehumidification
Nothing
b
DHM1 and DHM2 open
c
Y
c
and G
c
Auto
Ventilation
VNT1 and VNT2 Close
VNT1 and VNT2 Close
None
Heat or Em.Heat
Humidification
HUM1 and HUM2 Close
NA
None
Heat or Em.Heat
Dehumidification
VNT1 and VNT2 Close
d
NA
None
Heat or Em.Heat
Ventilation
VNT1 and VNT2 Close
NA
None
Cool
Humidification
NA
Nothing
a
None
Cool
Dehumidification
NA
DHM1 and DHM2 close
e
None
Cool
Dehumidification
NA
DHM1 and DHM2 open
c
Y
c
and G
c
Cool
Ventilation
NA
VNT1 and VNT2 Close
None
SCHED HOLD CLOCK
SCREEN
FAN
ON
AUTO
A
M
THU
SYSTEM
EM HEAT
OFF
COOL
Following
Schedule
Inside
M23502
Humidity
DONE
CANCEL
TUE
SYSTEM
EM HEAT
OFF
COOL
CHANGE FILTER UV LAMP HUMIDIFIER PAD
Following
Schedule
Inside
Set To
M23503
Humidity
DONE
M22440
