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White-Rodgers™ 21M51U-843 Universal Two-Stage Furnace Control, 24 VAC, 14.5 A

Part #175446

MFG #21M51U-843

175446_1287_White_Rodgers_21M51U_843.jpg

White-Rodgers™ 21M51U-843 Universal Two-Stage Furnace Control, 24 VAC, 14.5 A

Part #175446

MFG #21M51U-843

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White-Rodgers™ 21M51U-843 Universal Two-Stage Furnace Control, 24 VAC, 14.5 A

Part #175446

MFG #21M51U-843

Item Features
  • Reduces inventory by replacing most White-Rodgers 50A51, 50M51, and 50M61 and other two-stage HSI controls with 80V or 120V ignitor.

  • Includes a universal 120V nitride ignitor to allow replacement of 80V and 120V controls

  • Added dipswitches to trial for ignition and blower delays

  • Additional blower motor wire extensions

  • Trane ignitor mounting bracket is included

  • Thermostat Inputs R,C,W1,W2,YLo,Y,G