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Designed to replace standard wall switches
it provides long-term reliability for contractors managing non-corrosive refrigerants
the part should be replaced to prevent motor overheating
allowing for manual system testing and troubleshooting without specialized tools
Johnson Controls T-4100-2 Thermostat 30067439-890 Designed to replace standard wallThe Johnson Controls T 4100 2 is a professional grade pneumatic thermostat designed for precision control in low volume output applications. This reverse acting pneumatic controller utilizes a force balance mechanism to modulate branch pressure in response to temperature fluctuations, ensuring stable HVAC performance. Engineered for vertical mount installations, the T 4100 2 features a 55 to 85 degree Fahrenheit dial range and is optimized for systems
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