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STEP 5 - Auto Zone Sizing
The zone control has the ability to energize the
blower and modulate dampers to determine how
much air each zone can handle. The Static
Pressure kit is required to use Auto Zone Sizing.
The auto zone sizing process calculates and
displays the size of each zone. The technician can
select and modify any zone setting to satisfy the
homeowners air flow desires.
STEP 6 - Zone Size Adjustment
Auto zone sizing will calculate the amount of air that the
ductwork for each zone can handle. There are three
available options:
•
The
Normal
mode calculates zone sizes based on an
average external duct static
•
The
Less Aggressive
option calculates on a lower
external duct static and will deliver a reduced amount
of air into each calling zone. This strategy provides a
quieter air flow system, but increases the amount of
excess air that must be managed. This may increase
the amount of excess air that is relieved into other zones.
•
The
More Aggressive
option calculates on a higher external duct static and will deliver an increased
amount of air into each calling zone. This strategy may produce a noisier air flow system, but reduces the
amount of excess air that must be managed. This may reduce the amount of excess air that is relieved
into other zones.
It is recommended to begin with the
Normal
mode. You can re-run auto zone sizing with
Less Aggressive
if
a customer is concerned about air noise, or at
More Aggressive
if a customer is concerned about relief air or
simply desires higher velocity air flow rates.
NOTE:
Auto Zone Sizing typically takes 10 to
15 minutes for 2 – 4 zone systems and up to 30
minutes for 5 – 8 zone systems.
If Auto Zone Sizing returns an error, follow the on-
screen prompts for diagnosing the failure.
NOTE:
All zones less than 25% cannot be a
voting zone (See STEP 7). Press “Yes” to accept
or press “No” to change the size of the zone.
