Data Aire dap4 User Manual page 75

MENU M – Set Zone Master (continued)
Rotation: To even out runtime among standby units, a scheduled rotation
of the lead unit may be chosen. The available selections are:
None – (Default) Rotation is disabled and the lead unit will not change.
The lead unit selection will appear instead of the rotation timing
selections below.
Day & Time – This selection will display an additional selection for the
Day (Sunday through Saturday or Everyday) and the time when rotation
will occur. The time is in AM/PM format.
Every "X" Hrs - Rotation will occur at the selected time increment
beginning from when the increment is selected. It is not based on the
clock hour status. Range is 1 to 48 Hrs
Exercise U2 – (Only shown when two units are installed). This setting is
used for applications when unit 2 is a "backup unit" and unit 1 is normally
doing all the cooling. This function sets how long the rotation to unit 2
will last before going back to unit 1. When "Exercise U2" is selected, the
bottom line sets how many hours unit 2 will be allowed to run. Range of
adjustment is 1 to 24 hours with a default setting of 1 hour.
Force Rotation – (Only shown when rotation is enabled and not selected
as Exercise U2). This selection appears when rotation is enabled and
allows you to manually cause a rotation. The timed rotation will still occur as
expected and does not get reset when force rotation is used.
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