KMC Controls CSC-3021-10 Pneumatic Reset Volume Controller for VAV Systems

The KMC Controls CSC-3021-10 is a pneumatic reset volume controller designed for use on heating or cooling systems with variable air volume (VAV) terminal units. This sub-master air velocity controller is equipped with separate adjustment knobs for minimum and maximum airflow setpoints, allowing precise control of air distribution in HVAC systems.

Key Features:

• Universal design for direct or reverse acting reset on normally open or normally closed VAV terminal units
• Airflow range: 0 to 1.0 inches water column (W.C.)
• Factory reset start point: 3 PSI with adjustable range from 0 to 10 PSI
• Main air pressure range: 15 to 30 PSIG
• Air consumption: 28.8 SCIM at 20 PSIG
• Push-on fittings for 1/4 inch O.D. tubing
• Includes mounting bracket

A master controller, typically a room thermostat, resets the CSC-3000 between the minimum and maximum velocity setpoints, providing responsive temperature control while maintaining energy efficiency. This controller is ideal for both new installations and retrofit applications requiring flexible damper and thermostat configurations.