Description
Siemens Building Technology 193-215 Overview
The Siemens Building Technology 193-215 is a 2-pipe heating/cooling pneumatic controller engineered for fan coil unit applications in commercial building automation systems. Featuring Direct Acting/Direct Acting (DA/DA) pneumatic control action and a Free Energy Band, this controller is designed to maximize occupant comfort while minimizing energy consumption in shared heating and cooling piping systems.
2-Pipe Heating/Cooling Operation
The 193-215 is purpose-built for 2-pipe HVAC systems where a single set of supply and return pipes serves both heating and cooling loads depending on the season. This configuration is common in commercial buildings, hotels, and multi-zone facilities where central plant changeover determines whether hot or chilled water is circulated through the system.
Direct Acting / Direct Acting (DA/DA) Control
The DA/DA pneumatic action means the controller increases its output signal in response to a rise in the controlled variable for both the heating and cooling control sequences. This straightforward pneumatic response simplifies system setup and integration with compatible pneumatic actuators and valves throughout the building automation network.
Free Energy Band Feature
The Free Energy Band is a key efficiency feature that establishes a neutral deadband zone within the control sequence. During periods when space conditions fall within this band, neither heating nor cooling is actively called for, allowing the system to take advantage of free energy — reducing unnecessary valve modulation, extending equipment life, and lowering operating costs.
Key Features
- 2-pipe heating and cooling pneumatic control
- Direct Acting / Direct Acting (DA/DA) pneumatic action
- Free Energy Band for reduced energy consumption and improved efficiency
- Designed for fan coil unit and commercial HVAC applications
- Part of Siemens Building Technology’s proven pneumatic controls portfolio
- Compatible with standard pneumatic building automation systems
Typical Applications
- Commercial office buildings with 2-pipe fan coil systems
- Hotels and multi-zone facilities
- Retrofit and replacement of existing Siemens pneumatic controllers
- Building automation systems requiring DA/DA pneumatic sequencing
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