Trane MOD1301 Actuator Freon The Johnson Controls T-4752-205 is

The Johnson Controls T-4752-205 is a high-performance pneumatic heating-cooling thermostat engineered for precise proportional control in commercial HVAC systems

this specific model is direct acting

What are the signs that my pilot orifice needs replacement

featuring identical mounting and performance curves

you can safely upgrade to a higher FLA rating (40A) as long as the coil voltage (208/240V) and the number of poles (3-pole) match the original specifications

Trane MOD1301 Actuator Freon The Johnson Controls T-4752-205 isThe Trane MOD1301 Actuator is a direct OEM foot mount actuator designed for high precision HVAC damper control. This 2 10VDC modulated unit operates as an electrical to mechanical transducer, translating low voltage signals into accurate positioning for dampers or valves in residential and commercial air handlers. A key field feature is the spring return mechanism (S R), which ensures a fail safe position during a total power loss, protecting the coil