Johnson Controls T-4002-5017 Dial the system must remain disabled

the system must remain disabled until a technician confirms the flame is correctly contained within the burners

Reliable Sealing: High-tolerance compression fitting design prevents gas escapement and ensures a vacuum-tight vent path

Plastic caps are intended only for shipping

Most failures stem from loose wire connections leading to localized resistance and thermal pitting

measure resistance across the leads

Johnson Controls T-4002-5017 Dial the system must remain disabledThe Johnson Controls T 4002 5017 Dial is a critical replacement component designed for horizontal mounted thermostats within the T 4000 series pneumatic control systems. This external set point dial facilitates precise manual adjustments of the pneumatic thermostat setpoint, allowing technicians to calibrate or modify space temperature settings without removing the protective cover. Engineered for high volume output thermostats, the dial features a