Greenheck SMD-401M - Manuals

SMD-401M Pressure Drop Data This pressure drop testing was conducted in accordance with AMCA Standard 500-D using the three configurations shown. All data has been corrected to represent standard air at a density of .075 lb/ft 3 (1.201 kg/m 3 ). Actual pressure drop found in any HVAC system is a com...

Space Envelopes Required for Actuators and Accessories Externally mounted actuators always require space outside of the damper sideplate or sleeve. The “S” dimension illustrates the clearance required for various available actuators. On dampers less than 18 in. (457mm) high, actuators may also requi...

Transitioned Damper Dimensions When a fire/smoke damper is being used in conjunction with round or oval ductwork, the SMD-401M can be supplied in a factory sleeve with round or oval transitions on both ends of the sleeve. Dampers should be ordered to the duct dimensions. Drawings below show overall ...