Carrier TruVu VAVB3-E2, Installation And Startup Manual

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Using the airflow sensor
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Installation and Start-up Guide All rights reserved
41
To set up the Airflow Control microblock
The TV-VAVB3-E2'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.
In a single duct system
1
In the Snap application, set the Airflow Microblock Properties Editor > Hardware Configuration > Primary Use
to Cooling .
2
Save your control program.
3
In the i-Vu® interface on the control program's Logic page, select the Airflow Control microblock.
4
On the Details tab in the Flow Sensor field under Hardware Configuration , select Integral - onboard .
5
In the Damper Actuator field, select Integral - onboard .
In a dual duct system
1
In the Snap application, set the Airflow Microblock for Flow #1 Properties Editor > Hardware Configuration >
Primary Use to Cooling , and set the Airflow Microblock for Flow #2 Properties Editor > Hardware
Configuration > Primary Use to Heating .
2
Save your control program.
3
In the i-Vu® interface on the control program's Logic page, select the Airflow Control microblock for Flow #1.
4
On the Details tab under Hardware in the Flow Sensor field, select Integral - onboard .
5
In the Damper Actuator field, select Integral - onboard .
6
On the Logic page, select the Airflow Control microblock for Flow #2.
7
On the Details tab under Hardware in the Flow Sensor field, select Integral - remote .
8
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.
See Input values (page 31) for information on the Special Binary input that indicates a communication loss to the
airflow sensor.