Data Aire dap4 User Manual page 20

MENU B – SETPOINTS continued
Note: This screen is only shown when a Chiller Water Valve is configured as
"Engy Svg Cool" or "Aux Chill Wtr" in the factory settings menu.
Setpoint: The Energy Saver Setpoint determines the highest temperature that the
chilled water can be used for the energy saver mode. The range of adjustment is
40.0 to 60.0 °F with a default value of 50.0 °F.
Deadband: The Energy Saver Deadband determines how much the chilled water
temperature must drop below the setpoint for the energy saver mode to begin.
The range of adjustment is 1.0 to 5.0 °F with a default value of 1.0 °F.
Change Over: While in the energy saver mode, this setting determines how much
the air temperature can rise above the cooling stage point before changing over to
DX cooling. For example; if the Temp Set point is 72° with a Deadband of 2°, DX
will normally start at 74°. However when in the energy saver mode and Change
Over setting is 3°, then DX will not start until the control temperature rises to 77°.
The range of adjustment is 2.0 to 5.0 °F with a default value of 2.0 °F.
Note: This screen is only shown when using the Zone Master and the fan mode is
set to "C Airflow" in the factory settings menu. It is also only shown on the unit that
is the master controller.
Zone AF SP: This is the airflow in cubic feet per minute within a zone that the
master controller will modulate the fans of all units running to maintain. The range
of adjustment is 100 to 720,000cfm with a default of 32,000cfm.
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