Johnson Controls P-3800-1 Controller Refrigerant and ME series units

and ME series units

ensuring the thermocouple/thermopile and pilot flame interact correctly with the safety magnet

preventing hunting and improving system efficiency

Proper installation requires verifying the technical specifications against the unit wiring diagram to maintain system integrity and proper refrigerant cycle management in residential and light commercial heat pumps and air conditioners

Johnson Controls P-3800-1 Controller Refrigerant and ME series unitsThe Johnson Controls P 3800 1 Reset Volume Controller is a high performance, pressure independent submaster device engineered to regulate airflow within Variable Air Volume (VAV) systems. Designed for precision, this pneumatic airflow controller operates with a supply pressure range of 13 25 PSIG and delivers an output pressure of less than 2 PSIG. It is built to maintain a constant reset span, which effectively eliminates hunting and ensures stable