Honeywell PRESTIGE THX9321 - Manual (Page 55)

THX9321 PRESTIGE ® 2.0 AND THX9421 PRESTIGE ® IAQ WITH EIM
55 68-0311—02
8050 Humidification -
Window Protection
Off
On Off Both No Requires an optional outdoor sensor.
Off: The thermostat controls the humidity
level to the user's desired humidity setting.
Frost or condensation may appear on
windows.
On: The thermostat prevents frost or
condensation on windows by not allowing
the humidity to go above the “Window
Limit” when it is controlling the humidifier.
The “Window Limit” is based on the
current outdoor temperature and the user's
window protection setting. The “Window
Limit” is displayed on the user's
humidification screen. See “Window
Protection” beginning on page 102.
8060 System Modes
Allowing
Humidification
Check box on screen for each:
Heat
Cool
Off Heat
Default varies
based on
heating/cooling
equipment
selected
Both No Click boxes on screen to select which
system modes allow humidification. If a
box is NOT checked, the thermostat will
NOT allow humidification to operate in that
mode.
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 102.
8070 Humidification
Control
Humidify Only when Heat is On
Humidify Only when Fan is On
Humidify on Demand:
Thermostat Controls Fan
Humidify on Demand:
Humidifier Controls Fan
Defaults to
Humidify Only
when Heat is
On
when ISU 8000
Humidifier
Type is Bypass
or Fan Powered
Defaults to
Humidify on
Demand:
Thermostat
Controls Fan
when ISU 8000
Humidifier
Type is Steam
Both No Humidify Only when Heat is On: The
thermostat turns on the humidifier only if
the heat is currently running.
Humidify Only when Fan is On: The
thermostat turns on the humidifier only if
the fan is currently running.
Humidify on Demand - Thermostat
Controls Fan: The thermostat turns on the
humidifier and the fan when humidification
is needed.
Humidify on Demand - Humidifier Controls
Fan: The thermostat turns on the humidifier
when humidification is needed and the
humidifier controls the fan.
8080 Humidifier Lockout Humidifier Allowed when Cool is
Running
Humidifier Not Allowed when Cool
is Running
Humidifier
Allowed when
Cool is
Running
Both No
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes