Honeywell TP971B2001 Pneumatic Thermostat 60-90°F/Day At 13 PSI, 50-75°F/Night 18 PSI

The Honeywell TP971B2001 Pneumatic Thermostat was used to regulate the flow of HVAC systems. It has various temperature levels for day use between 60-90°F and for night use between 50-75°F. This automatic changeover is done based on a pressure of 13 PSI for the day and 18 PSI at night. This pneumatic control also enables the building to set back temperatures during periods of no occupancy hence saving on heating and cooling costs. This makes the indoor conditions to be well controlled while at the same time reducing energy consumption.