Balancing; Pressure Independent - LG MultiSITE MS8250 User Manual

Balancing

During balancing, a technician will install a calibrated flow sensor (balometer) over the outlet in each room and use this to calibrate the
MS8250 VAV Room Controller.

Pressure Independent:

• True air flow will be measured using the balometer and compared to the airflow calculated by the MS8250 at various setpoints.
• MS8250 Room Controller calibration parameters will be adjusted to ensure the calculated air flow matches the true air flow.
Pressure Dependent:
True air flow at various damper position percentages will be measured and used to set the appropriate damper percentages for the air flow
required for the zone.
Figure 31: Balancing.Pressure Diagram.
Flow sensor
(PI only)
Pressure Independent
Before starting to Balance the system, check if the following parameters are correctly configured in the Configuration menu:
• VAV Box Type
• Flow at 1-inch water column
• Airflow Sensor Pressure Range
• Actuator Type
• Floating Actuator Time
Airflow Balancing settings can be found on the Balancing page of the Setup menu.
Damper
Calibrated
Flow Sensor
(Balometer)
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG Life's Good" is a registered trademark of LG Corp.
BALANCING
Pressure Independent
Balancing menus will timeout after eight (8) hours and
any Damper Override will be removed, returning the
zone to normal operation.
43