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Siemens 192-850W Pneumatic Thermostat Quick Reference Guide
Quick reference guide for Siemens POWERS Controls pneumatic thermostats, including models 192, 193, 832, 356, 357, 188, and 134. Covers features, applications, and technical configuration options.
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This document serves as a quick reference for the Siemens POWERS Controls pneumatic thermostat series. It provides an overview of key features, typical applications, and configuration requirements for various models, including room thermostats, unit-mounted thermostats, and temperature detection devices. For detailed installation and calibration procedures, please refer to the specific technical instructions linked for each model.
Overview of Thermostat Series
The Siemens POWERS pneumatic line includes several specialized models designed for commercial and institutional HVAC control:
- 192 S Single Setpoint: Available in 1-pipe and 2-pipe configurations for heating and cooling control.
- 192 DN/DNV Day/Night/Vent: Features manual override for off-hour comfort and ventilation control.
- 192 HC Heating/Cooling: Automatically adjusts between heating and cooling setpoints.
- 193 HC Free Energy Band: Designed for buildings with specific morning heating and afternoon cooling requirements.
- 832 D All-Metal: Rugged construction for long-term service in radiation and ventilation systems.
- 356/357 D Limitem: Rigid and remote bulb thermostats for primary control of air handling units.
- 188 Unit Mounted: Designed for fan coil induction units and unit ventilators.
- 134 High and Low Temperature Detection: Snap-acting pneumatic switches for safety and limit control.
General Features and Accessories
Most models feature sensitive bimetallic elements for temperature response, integral adjustable limit stops, and are available in Fahrenheit or Celsius scales. Thermostat covers are available for the 192, 193, and 832 series in various colors. Calibration tools and installation hardware are provided with Retroline kits and specific accessories.
Technical Support
For further assistance or comments regarding this documentation, you may contact Siemens Industry, Inc. at their headquarters: 1000 Deerfield Parkway, Buffalo Grove, IL 60089-4513, USA, or via email at [email protected].
Manufacturer information
Siemens AG
Practical help
Common problems
High limit application failure
Ensure the 134 series thermostat is correctly set to shut down fans or close dampers when duct temperature exceeds the setpoint.
Limited air capacity
For 1-pipe configurations, ensure the system is used only when limited output air capacity is required to operate a single valve or actuator.
Before use
- Verify the required pipe configuration (1-pipe, 2-pipe, or 3-pipe) for your specific model.
- Check if the application requires a direct or reverse acting model.
- Confirm the temperature operating range matches your environment requirements.
- Ensure the thermostat is compatible with your existing rough-in boxes.
- Check if an external restrictor is required for 1-pipe installations.
Specs in practice
- 1-pipe configuration
- Used for limited output air capacity; requires an external restrictor (20 scim air supply).
- 2-pipe configuration
- Used for high output capacity to control multiple valves and actuators.
Model compatibility
- 192, 193, and 832 series share common thermostat cover and accessory compatibility.
- Retroline kits are available for most 2-pipe applications.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.