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McDonnell & Miller Boiler Controls

Low Water Cut-Off

Low Water Cutoff (LWCO) for commercial or industrial applications as primary or secondary control on hot water boilers or secondary control on steam boilers. Manual reset models meet the requirements of ASME Standard CSD-1.

  • Green LED power indicator light
  • Red LED low water indicator light
  • Test button
  • No lock out with loss of power if probe is in water
  • 20,000 ohms sensitivity
  • Maximum Water Pressure: 160 psi
  • Maximum Steam Pressure: 15 psi
  • Maximum Water Temperature: 250°F
Electronic parts are not returnable. Please check to make sure you have chosen the correct part.

Documentation: McDonnell_& Miller 751P.pdf

Part No. Qty Unit Price
176234 McDonnell & Miller 751P-MT-120
Electronic Manual Reset Low Water Cutoff w/standard probe. 120V
McDonnell_Miller LW Cutoff Install.pdf
176296 McDonnell & Miller 752P-MT-24
Electronic Manual Reset Low Water Cutoff w/standard probe. 24V
McDonnell_Miller LW Cutoff Install.pdf

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