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Engineered for 24V control systems found in standard residential air handlers and furnaces
requiring no external power or controllers
F and show an open circuit once it rises above the termination setpoint
This direct replacement gauge glass is essential for routine boiler maintenance
0 A (120V) or 6
Johnson Controls T-4756-201 Thermostat Els PW 17895 Engineered for 24V control systemsThe Johnson Controls T 4756 201 is a professional grade pneumatic heating cooling thermostat engineered for high volume air distribution in commercial HVAC systems. This dual temperature control unit operates with distinct pressure actions: 15 psig direct acting for heating and 20 psig reverse acting for cooling. Designed for horizontal mounting, this robust controller ensures seamless transitions between seasonal cycles by managing pneumatic actuator