Siemens Building Technologies 193-212 Pneumatic Room Thermostat delivers reliable room temperature control for commercial pneumatic HVAC systems requiring accurate heat and cool setpoint operation.
Designed for 1-pipe, low air capacity applications, this thermostat supports direct acting heating and reverse acting cooling to help maintain consistent zone comfort in commercial building environments.
Its 45°F to 85°F setpoint range, 18 to 25 psi air supply compatibility, and factory calibration at 7.5 psi control pressure at 72°F support dependable performance in maintenance, retrofit, and replacement installations.
The 193-212 is a practical solution for restoring precise Siemens pneumatic HVAC control where reliable room temperature regulation is required and is a functional replacement for the T-4600-5 Pneumatic Room Thermostat.
The Free Energy Band creates an adjustable deadband between heating and cooling operation. This helps prevent unnecessary air consumption and active climate control when the room temperature is within the selected neutral range.
By maintaining a minimum 4°F deadband between heating and cooling stages, the thermostat helps avoid simultaneous or unnecessary heating and cooling activity, which can reduce overall building energy waste.
Dual setpoint / dual output means the thermostat uses separate control points for heating and cooling. This allows the unit to manage seasonal temperature transitions more effectively under one thermostat cover.
The thermostat uses proportional pneumatic control. Sensitive flapper nozzle adjustments modulate control air output smoothly as room temperature changes, helping maintain stable comfort control.
In heating mode, the thermostat operates as direct acting. As room temperature rises toward the heating setpoint, the thermostat increases output pressure to throttle back or shut off heating valves.
In cooling mode, the thermostat operates as reverse acting. As room temperature rises past the deadband limit, the thermostat decreases output pressure to open cooling valves or dampers.
Yes. The 193-212 is designed for pneumatic HVAC systems that require both heating and cooling control with separate setpoints and output logic.
The Siemens 193-212 is suitable for commercial pneumatic HVAC applications where accurate room temperature control, deadband management, and heat/cool pneumatic output control are required.
| Factory Calibration | 7.5 psi (52 kPa) control pressure at 72°F (22°C) |
|---|---|
| Air Supply Pressure | 18 to 25 psi (124 to 172 kPa) |
| Setpoint Range | 45°F to 85°F (7°C to 30°C) |
| Temperature Scale | Fahrenheit (°F) |
| Action | Direct Acting (DA) for Heat / Reverse Acting (RA) for Cool |
| Piping Configuration | 1-pipe system (dual one-pipe, low air capacity) |
| Control Type | Pneumatic room temperature control |
| Sensitivity | Approximately 2.5 psi/°F (31 kPa/°C) |
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