JC Cooling
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Pressure Independent type VAV

 J C Cooling LLC pressure independent type VAV is a single duct pressure independent air terminal unit, designed to use with low and medium pressure air handling systems. Pressure independent control involves an additional input to the control of the VAV terminal unit. The pressure independent control options also monitor and respond to the velocity of the air flow, generally at the inlet of the unit. The terminal unit damper is positioned from a signal sent from the zone thermostat through a velocity reset controller to the damper actuator. The velocity reset controller then responds to changes in the inlet pressure conditions to maintain the required air flow. Pressure independent controls are frequently used for single duct variable volume control. For a given thermostat setting the controller can position the damper further open if the air flow at the inlet is insufficien

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