Data Aire dap4 User Manual page 99

Zone Master Operation (continued)
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 of 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.
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.
Time and Setting – Set the time of day when the schedules should
change. Then set which schedule should be run at the time selected:
Primary or Secondary.
When the clock reaches the time set, the schedule switches to the one
selected. Under normal circumstances, each time setting would have the
opposite schedule of the previous one. The schedules can be switched up
to four times a day. Leave blank (------) if no additional scheduling is
required.
In addition to the daily scheduler described above, a holiday or special day
schedule may also be used.
Holiday schedule allows you to set a span of one or more days to run the
schedule selected: Primary or Secondary. Up to 4 holiday schedules may
be set. While running a holiday schedule, it supersedes the weekday
schedule.
Special day schedule is similar to the Holiday schedule except it is limited
to just one day that will run the schedule selected: Primary or Secondary.
While running a special day schedule, it supersedes the weekday schedule.
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