Johnson Controls P-3800-2 Controller Refrigerant Always confirm this specification matches

Always confirm this specification matches your boiler's requirements for proper function

Always verify the vacuum pressure with a manometer before replacing the switch

A 440V capacitor is more durable and handles heat better than a 370V unit

25-inch diameter fan blade is designed with a 0

or the burners shutting down immediately after a brief flame light-off

Johnson Controls P-3800-2 Controller Refrigerant Always confirm this specification matchesThe Johnson Controls P 3800 2 is a professional grade Reset Volume Controller engineered for precise airflow regulation in Variable Air Volume (VAV) systems. Designed as a pressure independent submaster device, it maintains accurate volume control between adjustable minimum and maximum setpoints in response to a thermostat or master controller signal. This unit supports a 13 25 PSIG supply pressure range and operates with a primary input capacity to