The T-4756 Thermostat is a high volume output, dual-temperature, dual-dial, heating-cooling thermostat. The T-4756 provides automatic changeover between direct and reverse actions when supply pressure changes from 15 to 20 psig (105 to 40 kPa).
Refer to T-4000 Series Pneumatic Room Thermostat Product Bulletin (LIT-7171060P) for important product information.
Figure 1. T-4756 Heating-CoolingHigh Volume Output Thermostat
