KMC Controls SimplyVAV BAC-8001 User Manual

Balancing airflow sequence
Balancing airflow is the process of calibrating the internal airflow sensor to a known
standard. In the field, airflow is measured with an airflow hood or other measuring
instrument and then compared to the airflow measurements from the sensor in the
controller. The balancing process requires an STE-8001 or STE-8201 digital sensor as the
technicians setup tool for initiating the balancing sequence and entering actual flow
measurements.
When the balancing sequence starts, all other functions of the controller are locked out.
At the start of the sequence, the controller drives the damper open until the airflow reaches
the highest value of either the cooling or heating maximum airflow setpoints. An airflow
measurement is made with an airflow hood and the actual airflow value is entered into the
controller. Once the actual airflow is entered, the controller drives the damper closed to the
lower value of either the cooling or heating minimum airflow. Another measurement is made
with the flow hood and that measurement is entered into the controller.
After the minimum airflow measurement is entered, the programming in the controller
calculates airflow correction factors which are used to adjust measurements from the
internal airflow sensor. Balancing is complete and the controller is returned to normal
operation.
See the topic Balancing airflow on page 37 for the procedure to balance the airflow with a
digital sensor.
Section 7: Sequences of operation KMC Controls, Inc.
60 Revision H

KMC Controls SimplyVAV BAC-8001 Specifications

General

Brand	KMC Controls
Model	SimplyVAV BAC-8001
Category	Controller
Language	English