Siemens SQN90.220A2799 actuator

Siemens SQN90.220A2799 actuator: compact and precise air damper control for small and medium power burners. Buying Siemens SQN90.220A2799 means equipping your burner unit with a reliable, compact, and high-precision electric drive for air supply regulation. This model is specially designed for small and medium power burners and ensures an optimal fuel-air mixture ratio, which directly affects efficiency, fuel savings, and equipment safety. Purpose and application area The Siemens SQN90.220A2799 actuator is designed to rotate air dampers of burner devices, controlling the precise ratio of burned fuel and air mixture. It is installed in single-stage, two-stage, or modulating small and medium power burners operating on gas or liquid fuel. Main functions of the actuator: Damper positioning during ignition — air supply in the amount necessary for safe ignition; Damper control during burner operation at low and high power; Damper opening during combustion chamber purge to remove residual gases. The actuator is compatible with combustion automatics (burner managers) LAL, LOK, LFL, LGK, LME, LME7, LMO, and can also work with regulators. Technical specifications of Siemens SQN90.220A2799 The SQN90.220A2799 actuator is equipped with a reversing synchronous motor providing high positioning accuracy. Below are the full technical specifications: Electrical parameters: Supply voltage: 220 V (allowable 220 V -15%…240 V +10%); Supply frequency: 50…60 Hz ±6%; Power consumption: 8 V·A; Electrical safety class: N to VDE0875. Mechanical characteristics: Torque (nominal): 2.4 N·m; Torque (holding): 2