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Section 2 UPGRADING THE SYSTEM
ZN
System Manual
Section 2
Setup Methods Suited to Specific Applications
• For the high power air volume level, always set an air volume greater than the low power
air volume level. Feedback will not function properly if a smaller value is set.
• The time that the high power air volume level is actually held is an integer multiple of the
feedback cycle.
Example: When Feedback Cycle is set to "60 s" and High Power(Time) is set to "100 s",
the actual high power time is 120 s.
• We recommend setting the feedback cycle to the measurement cycle of the Air Particle
Sensor or higher. Otherwise, feedback control will be endlessly executed based on the
same measurement result, and correct feedback control will not be possible.
How Feedback Control Works p.40
4. Click the [OK] button to start feedback controlled operation.
• When the setting is next used, feedback is automatically started simply by turning the Air
Clean Unit and Air Particle Sensor (and Interface Unit) power supplies ON.
• Feedback sometimes is not performed smoothly (i.e. a control lag occurs during
execution of feedback operation) when the power supply of the Air Clean Unit set as the
control target in feedback control is not turned ON.
To solve this, either set feedback control so that it is performed only on powered ON Air
Clean Units, or turn the power supply of all currently set Air Clean Units ON.
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