Installing the Zone Ctrl II
Zone Ctrl II and
VAV Zone II Secondary Duct Installation and Start-up Guide CARRIER CORPORATION ©2019
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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.
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
>
>
.
You can also access the control program's Airflow Control microblock on the
page.
2 On the
tab in the
field under
, select
.
3 In the
field, select
.
In a dual duct system
1 In the i-Vu® interface, select
>
>
.
You can also access the control program's Cold Deck Airflow Control microblock on the
page.
2 On the
tab under
,
in the
field, select
.
3 In the
field, select
.
4 On the
page, select the Airflow Control microblock for Flow #2.
The secondary Airflow microblock is not listed on the Properties page in the i-Vu® interface.
5 On the
tab under
in the
field, select
.
6 In the
field, select
.
• When performing test and balance, follow the steps under
on the Airflow Control
microblock's
page
tab.
• If you are using a version of the Snap application that is prior to v7.0, you must change the
to 154 seconds.
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