Balancing Ducted Supply – Pressure Independent and Dependent Airflow Control
NOTE:
If a ducted return or return mixing box is used, a PSC, ECM Constant Torque or ECM Constant Flow (preferred) can
be used.
Krown Fan Filter Units with Ducted Return
Krown Fan Filter Units with Return Mixing Box
Step 1:
If return mixing box is used, turn primary air off. If ducted return, proceed directly to Step 2.
Step 2:
Set Krown Fan Filter Unit to desired airflow. See
Airflow Setpoint
section to determine initial setpoint.
Step 3:
Confirm airflow using flow hood and adjust speed controller as required.
Step 4:
Power up the primary airflow control device. (Ductwork should have been previously balanced).
Step 5:
Measure airflow using flow hood and compare against scheduled flow. Adjust speed controller as necessary to
achieve design airflow.
For more information visit
KeystoneCleanAir.com
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Fan Filter Units |
Balancing
