Johnson Controls T-4002-204 Pneumatic Thermostat Els PW 17895 you only need a straightedge

you only need a straightedge for parallel alignment and a set of calipers for angular alignment

69Ω main and 9

Can I use high-temp silicone to patch a leak instead

This HVAC control module is engineered to monitor 24V AC signals and environmental conditions

check the terminals while the system is at rest

Johnson Controls T-4002-204 Pneumatic Thermostat Els PW 17895 you only need a straightedgeThe Johnson Controls T 4002 204 is a professional grade, high volume output pneumatic thermostat engineered for precise temperature regulation in demanding commercial and industrial environments. This reverse acting pneumatic thermostat is designed specifically for vertical mount orientations, providing a proportional output signal to modulate pneumatic valves and damper actuators. It operates within a standard 55 85F dial range, utilizing a single