These thermostats have a single setpoint to control heating and cooling systems at one temperature for basic temperature control in older schools, hospitals, and commercial buildings. Pneumatic thermostats regulate the temperature using compressed air for power.
These thermostats have a single setpoint to control heating and cooling systems at one temperature for basic temperature control in older schools, hospitals, and commercial buildings. Pneumatic thermostats regulate the temperature using compressed air for power.
The 2298 Series Unit Ventilator Thermostat has been designed for the proportional control of pneumatic devices and actuators in environmental control systems. These devices are designed primarily as return air controllers in induction units, fan coil units, and unit ventilators. The 2298 Series will also replace the obsolete 2264 Series Unit Ventilator Temperature Controllers.
These two-pipe controllers incorporate a receiver controller which, when coupled with the highly sensitive remote bimetal sensor system, provides accuracy and stability over the entire operating range. Models are available in direct or reverse acting only, or dual pressure summer and winter models for heating and cooling applications. Set point adjustment is accomplished by means of a serrated "thumb wheel". A "cooler and warmer" cover with graduated marks representing 5°F increments from 65 to 85°F (18.3 to 29.4°C) is provided with each controller.
| Set Point Range | 65 to 85°F (18.3 to 29.4°C) |
| Throttling Range | 4°F (-15.6°C) fixed |
| Adjustments | External or concealed |
| Main Air Pressure | 20 PSIG operating |
| Maximum Air Pressure | 30 PSIG |
| Air Consumption | 30 SICM |
| Calibration Point | Factory calibrated at 9 PSIG |
| Set Point Range | 65 to 85°F (18.3 to 29.4°C) |
| Throttling Range | 4°F (-15.6°C) fixed |
| Adjustments | External or concealed |
| Main Air Pressure | 20 PSIG operating |
| Maximum Air Pressure | 30 PSIG |
| Air Consumption | 30 SICM |
| Calibration Point | Factory calibrated at 9 PSIG |
