47
J.3. Checking and Adjusting Air Flow
For Economizer and Diffuser Pressure Drop Data, please refer to the end of
Appendix C: Airflow Performance
Data.
Figure J.3. – A: Static Pressure and Air Temp Measurement Location
J.3.1. Static Pressures and Measurements
• To measure the static pressure of the system, locate the locating dimples near the supply/return duct
openings, and drill a hole to the size necessary for the test probe. The location of these dimples are
shown in
Figure J.3. - A.
• NOTE: After taking airflow measurements, seal these openings per best practice to prevent airflow
leakage and water entry into the unit.
• NOTE: Drilling test tap locations in other panels or doors could put the test probe in a turbulent zone
providing false readings.
J.3.1.1. Using Tools
Use a calibrated monometer to measure the static pressure of the blower. Insert the meter probe into the
tap location. Make sure any economizer or outside air dampers are closed and run the fan at the maximum,
full speed setting. Record the reading for the return air and supply air separately.
J. STARTUP AND OPERATION
ST-A1273-50-00
RETURN STATIC PRESSURE
TAP LOCATION
SUPPLY STATIC PRESSURE
TAP LOCATION
Содержание Climate Master RGED Series
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