FACTAIR™ Air Pattern Selection

These pictures show an 8-inch diameter Model 100 with 1890 fpm supply velocity and 660 cfm discharge. Air velocity measurements taken at the centerline axis, 2 feet from the unit, were: (A) +1700 fpm; (B) +600 fpm; and (C) -70 fpm.

	A. With the FACTAIR terminal outlet VARI-DAMPER™ airflow controller fully open, test smoke is projected at full velocity through the base of the outlet in an axial, “straight-down” pattern. Lateral airflow through the barrel perforations is negligible.
	B. With the VARI-DAMPER airflow controller set at an intermediate position, a proportional amount of airflow through the perforations combines with axial flow for a wider air pattern and decreased direct velocity. The wide range of intermediate positions possible with the VARI-DAMPER airflow controller allows an equally wide range of possible air patterns and velocities.
	C. With the VARI-DAMPER airflow controller completely closed, all of the air is discharged through the barrel perforations, producing a hollow-cone air pattern.

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