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ppendIx
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IrFlow
m
anaGement
The Livezi Connect airflow management system modulates the speed of the indoor fan based
on the condition of the VAV system as a whole. The position of the VAV damper to each load
segment is monitored and at any given time the status of the VAV system can be expressed as
a nominal system airflow requirement in litres per second.
Consider the following simple examples:
Example 1
A system is made up of two load segments of equal size. The VAV damper to one segment is
fully closed and the damper to the other is fully open. In this instance the VAV system status is
the same regardless of which VAV damper is open.
(Actual system open ≈ 50%)
Example 2
Now consider the case where one of the load segments is larger (one is twice the size of the other).
The status of the VAV system when the large load segment is fully open and the smaller one
fully closed,
(Actual system open ≈ 67%)
is obviously different from when the small load segment is fully open and the large one fully
closed.
(Actual system open ≈ 33%)
To ensure optimum operation of the airflow management algorithm for the case in example 2,
each load segment is assigned a virtual setting called the airflow profile.
Summary of Contents for C-CCT-1210
Page 27: ...To Indoor Unit...
