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THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ 2.0 WITH EIM
59 68-0311—01
NOTE: For example, if a water leak sensor is normally
open, it will close when the device detects
water. If the water leak sensor is normally
closed, it will open when the device detects
water.
Refer to the instructions packed with the dry
contact device to determine if it is normally
open or normally closed.
Fig. 87.
6. If you are creating a custom alert, type the alert name
into the text box and press Done. The alert name is what
appears on the Home screen when the alert is detected.
See Fig. 88. You can edit or confirm the alert name after
you enter it.
Fig. 88.
7. Type the custom alert message into the text box and
press Done. The custom alert message appears when
the orange alert button is pressed. See Fig. 89. You can
edit or confirm the alert message after you enter it.
Fig. 89.
8. Repeat steps 4–5 for the other Dry Contact, if necessary.
Staging Control
Differential Between All Stages
The thermostat provides Differential settings between all
stages. The equipment changes stages based on how far the
indoor temperature is from the setpoint. Differential settings
provide a way to balance comfort and conservation.
Heat Differential
The indoor temperature must drop to the selected differential
setting before the thermostat will turn on the stage of heating.
For example, if stage 2 is set to 2 °F (1.0 °C), the indoor
temperature must be 2 °F (1.0 °C) away from the setpoint
before stage 2 turns on. When set to Comfort, the thermostat
will use the stage of heating as needed to keep the indoor
temperature within 1 °F (0.5 °C) degree of the setpoint. The
thermostat turns on stage 2 when the capacity on stage 1
reaches 90%.
Cool Differential
The indoor temperature must rise to the selected differential
setting before the thermostat turns on the stage of cooling. For
example, if stage 2 is set to 2 °F (1.0 °C), the indoor
temperature must be 2 °F (1.0 °C) away from the setpoint
before stage 2 turns on. When set to Comfort, the thermostat
uses the stage cooling as needed to keep the indoor
temperature within 1 °F (0.5 °C) degree of the setpoint. The
thermostat turns on stage 2 (or the next stage) when the
capacity on stage 1 reaches 90%.
Home screen
Installer setup
screen
User notification screen
Installer setup
screen