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Installing the Zone Ctrl II
To set up the Airflow Control microblock
The Zone Ctrl II's control program must include one Airflow Control microblock for a single duct system or two of
the microblocks for a dual duct system. You must set up the Airflow Control microblock for each flow sensor when
creating a program in Snap.
NOTE The Airflow Control microblock is already set up and adjusted in all of the EquipmentBuilder programs for
this controller. You do not need to adjust the Airflow settings at all when using one of them. For a list of
EquipmentBuilder control programs, see To use an EquipmentBuilder control program (page 29).
In a single duct system
1
In the i-Vu® interface, select Properties > Service Configuration > Flow Control.
NOTE You can also access the control program's Airflow Control microblock on the Logic page.
2
On the Details tab in the Flow Sensor field under Hardware Configuration, select Integral - onboard.
3
In the Damper Actuator field, select Integral - onboard.
In a dual duct system
1
In the i-Vu® interface, select Properties > Service Configuration > Cold Deck Flow Control.
NOTE You can also access the control program's Cold Deck Airflow Control microblock on the Logic page.
2
On the Details tab under Hardware Configuration, in the Flow Sensor field, select Integral - onboard.
3
In the Damper Actuator field, select Integral - onboard.
4
On the Logic page, select the Airflow Control microblock for Flow #2.
NOTE The secondary Airflow microblock is not listed on the Properties page in the i-Vu® interface.
5
On the Details tab under Hardware Configuration in the Flow Sensor field, select Integral - remote.
6
In the Damper Actuator field, select Integral - remote.
NOTES
•
When performing test and balance, follow the steps under Test and Balance on the Airflow Control
microblock's Properties page Details tab.
•
If you are using a version of the Snap application that is prior to v7.0, you must change the Damper Motor
Travel Time to 154 seconds.
Zone Ctrl II and
VAV Zone II Secondary Duct Installation and Start-up Guide
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