Siemens Actuator Servomotor SQN72 / SQN73 Series

The SQN72/SQN73.. is an electromotoric actuators are designed for for positioning and driving air/gas dampers of oil burners, gas burners, and other ancillary equipment of small and medium heat capacity. They also offer load-dependent control of the amount of fuel and combustion air.

The controlling elements are controlled as follows depending on the current burner load:

• In connection with P-PI or PID controllers, such as the RWF5
• Directly via the different types of burner controls, such as LOA, LMO, LME, or LFL
• In connection with 1- or 2-wire control or 3-position controllers