Johnson Controls T-4100-3 Single Temperature Low Volume Output Thermostat
The Johnson Controls T-4100-3 is a direct-acting, single-temperature pneumatic thermostat engineered for precision low-volume air output control in commercial and industrial HVAC applications. Designed for vertical mounting, this thermostat delivers reliable, responsive pneumatic signaling within a well-defined operating envelope — making it an ideal choice for building automation and pneumatic control systems where accuracy and consistency are paramount.
Key Features
- Direct-acting operation — output pressure increases as temperature rises
- Single-temperature control for straightforward zone management
- Fahrenheit display with a 12 to 28 degrees Celsius (approximately 54°F to 82°F) dial range
- Low volume pneumatic output: 45 SCIM with .007″ restrictor or 25 SCIM with .005″ restrictor
- Supply pressure range: 13 to 25 Psig
- Vertical mount configuration for standard wall installation
Specifications
- Brand: Johnson Controls
- Model / SKU: T-4100-3
- Control Action: Direct Acting
- Temperature Scale: Fahrenheit
- Dial Range: 12 to 28°C (approx. 54°F to 82°F)
- Output Flow (with .007″ restrictor): 45 SCIM
- Output Flow (with .005″ restrictor): 25 SCIM
- Supply Pressure: 13 to 25 Psig
- Mounting Orientation: Vertical
Applications
- Commercial building pneumatic HVAC control systems
- Single-zone temperature regulation in offices, schools, and institutional facilities
- Retrofit and replacement in existing Johnson Controls pneumatic networks
- Building automation systems requiring low-volume pneumatic signal output
Why Choose the Johnson Controls T-4100-3?
Johnson Controls has long been a trusted name in commercial HVAC controls. The T-4100-3 continues that legacy with a robust, field-proven design that integrates seamlessly into pneumatic control networks. Its selectable restrictor options give technicians flexibility to match system flow requirements precisely, while the defined supply pressure range ensures stable, repeatable performance across varying conditions. Whether you are servicing an existing pneumatic system or specifying controls for a new installation, the T-4100-3 delivers dependable single-temperature control you can count on.
