McDonnell & Miller Series AF1, AF2, AF3 Air Flow Switches

By April 30, 2017 Blog, Boilers and boiler controls


Features and Benefits of the AF Air Flow Switches

  • For general purpose applications with medium and high velocity requirements
  • Paddle fits 8? (203mm) minimum duct size, or 6? (152mm) if trimmed
  • Brass, steel and aluminum construction
  • Single pole, double throw snap switch
  • Sensitivity adjusting screw makes flow adjustment easy
  • Two electrical knock-outs allow connection from either end can be equipped with a time delay relay
  • Optional features
    – Stainless steel
    – Anti-corrosion treatment
  • Minimum ambient temperature 32°F (0°C)
  • Maximum duct temperature 300°F (149°C)