Operating Instructions

Application 2522: VAV with Electric Reheat or Baseboard Radiation
Siemens Building Technologies, Inc. 3-27
Hardware Inputs
Analog
• Air velocity sensor
• Room temperature sensor
• Room temperature setpoint dial (optional)
Digital
• Night mode override (optional)
• Wall switch (optional)
Hardware Outputs
Analog
• None
Digital
• Autozero Module (optional)
• Damper actuator (wired internally)
• Stage 1 electric reheat or 2-position heating valve
• Stage 2 electric reheat (optional) or Autozero module (optional)
Ordering Notes
Actuating Terminal Equipment Controller with Reheat—Electronic Output
Single unit 550-405
10-pack 550-405P10
Contact your local Siemens Building Technologies representative for additional product
numbers.
Autozero Module (optional)
Temperature sensor (select one)
• Terminal Equipment Controller room temperature sensor
• Duct temperature sensor, 10K
Ω , TEC (return-duct sensor)
4-inch (10.2 cm) 540-128
18-inch (46 cm) 540-739