Using an incorrect differential can lead to heat exchanger damage or improper fan operation

including the VR8200

With a maximum working pressure of 150 psi (10

the entire unit must be replaced to ensure the safety circuit logic remains synchronized and compliant with manufacturer specifications

Reduced Maintenance: High-quality material construction extends the service life of the actuator

Johnson Controls T-4003-203 Thermostat Refrigerant Using an incorrect differential canThe Johnson Controls T 4003 203 is a high volume output submaster pneumatic thermostat engineered for precise proportional control in complex HVAC systems. Designed for reverse acting operation, this unit utilizes horizontal mounting and is specifically calibrated for applications where a remote master controller resets the setpoint based on external variables like outdoor air temperature. With a massive 400 SCIM flow capacity and a low 20 SCIM air