Greenheck SMD-401 - Manuals

Pressure Drop Data SMD-401 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 comb...

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

JO NN JO NN Transitioned Damper Dimensions When a fire/smoke damper is being used in conjunction with round or oval ductwork, the SMD-401 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 sh...