Siemens Building Technology 194-3042 Retrostat 321702-401 Fail-Safe Design: The spring return

Fail-Safe Design: The spring return actuator ensures the damper seals tight whenever the system is inactive

As a genuine 100171946 Lochinvar part

Precise Pressure Calibration: Integrated static pressure set-point indicator allows for immediate verification of system bypass levels without a manometer

Precise Signal Feedback: Optimized for microamp signal transmission to ensure reliable communication with the ignition control module

Siemens Building Technology 194-3042 Retrostat 321702-401 Fail-Safe Design: The spring returnThe Siemens Building Technology 194 3042 is a specialized pneumatic hot water retrostat kit engineered for day night (D N) temperature control in legacy hydronic HVAC systems. Designed specifically for direct acting (DA) pneumatic signals, this kit provides a seamless path for Powers pneumatic thermostat replacement in commercial and institutional facilities. The 194 3042 facilitates dual setpoint operation, allowing for automated switching between