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This specific model features floating control without timeout
sequenced heating control required for modern 240V systems
Mechanical Reliability: Operates as a manual-on auto-off timer without requiring electricity for the timing mechanism
providing the stability required for demanding commercial climate control architectures
Johnson Controls T-4756-201 Thermostat Refrigerant This specific model features floatingThe 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
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