Honeywell TH8321 Product Data page 29

ISU Installer Setup
Number Name
User Humidifier in Heat Mode -
806 User Humidifier in
No or Yes
Heat Mode
Use Humidifier in Cool Mode -
Use Humidifier in
No or Yes
Cool Mode
Use Humidifier in Off Mode - No
or Yes
Use Humidifier in
Off Mode
Hum when Heat is On
807 Humidifier Control
Hum when Fan is On
Tstat Controls Fan
Hum Controls Fan
Yes
808 Run Humidifier
when Cool is On No
Off
810 Hum Tank / Filter
60 Run Time Days
Reminder
90 Run Time Days
6 Calendar Months
12 Calendar Months
Off
810 Humidifier Pad
Reminder 60 Run Time Days
90 Run Time Days
6 Calendar Months
12 Calendar Months
Residential:
900 Dehumidification
Equipment None
A/C with Low Fan
A/C with High Fan
Dehumidifier
Commercial:
None
A/C with Low Fan
A/C with High Fan
Hot Gas Bypass
Dehumidifier
U1
904 Dehum Wiring
Table 2. Installer Setup (ISU) Table. (Continued)
Settings Default
User Humidifier in
Heat Mode - Yes
Default varies based
on heating/cooling
equipment selected
Defaults to Hum when
Heat is On
when ISU 800
Humidifier Type is
Bypass or Fan Pwrd
Defaults to
Tstat Controls Fan
when ISU 800
Humidifier Type is
Steam
Yes
Off
Off
None
Thermostat defaults to
the unused U1
terminal.
VISIONPRO® 8000 SMART THERMOSTAT
Residential,
Commercial
or Both
Both Heat: Includes Heat, Emergency Heat and Auto. If
the system is in Auto mode, the thermostat will allow
humidification if the last call was for heat.
Cool: Includes Cool and Auto. If the system is in Auto
mode, the thermostat will allow humidification if the
last call was for cool. A discharge air temperature
sensor is required to humidify in the Cool mode.
Off: The thermostat will allow humidification when
the system setting is Off.
See "Set up Humidification" beginning on page 57.
Both Hum when Heat is On: The thermostat turns on the
humidifier only if the heat is currently running and
humidification is needed.
Hum when Fan is On: The thermostat turns on the
humidifier only if the fan is currently running and
humidification is needed.
Tstat Controls Fan: The thermostat turns on the
humidifier and the fan when humidification is
needed.
Hum Controls Fan: The thermostat turns on the
humidifier when humidification is needed and the
humidifier controls the fan.
Both Yes: Humidifier can run when the cooling system is
on.
No: Humidifier can NOT run when the cooling
system is on.
Both This ISU is only displayed if ISU 800 Humidifier Type
is Steam.
Run Time Days are not shown if ISU 800 Humidifier
Type is set to None.
Both This ISU is only displayed if ISU 800 Humidifier Type
is Bypass or Fan Pwrd.
Run Time Days are not shown if ISU 800 Humidifier
Type is set to None.
Both See "Dehumidification - Residential" beginning on
page 59 or "Dehumidification - Commercial"
beginning on page 63.
Both U1 are dry contacts that require power. See "Wiring
IAQ Equipment or a Heat/Cool Stage to the U1
Terminals" beginning on page 86.
29
Notes
33-00096—04