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White Rodgers 21M51U-843 Ignition Module/Circulator Furnace Control Kit with Nitride Ignitor, 24 VAC

White Rodgers 21M51U-843 Ignition Module/Circulator Furnace Control Kit with Nitride Ignitor, 24 VAC
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Shipping Info
Model: 21M51U-843
$180.00
In-Stock
Ships Friday, Dec 14th
Holiday Shipping Schedule
Holiday Schedule - 
 
In-Stock
Ships Friday, Dec 14th
Shipping Info
Shipping Info
*We currently CANNOT ship this product to Canada or any destination outside of the United States
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  • Product Description
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  • Product Q&A
  • How-To Articles
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Product Description
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Features
Features
    The 50M51-843 is a universal replacement control for two-stage automatic gas ignition controls employing a microprocessor to continually monitor, analyze, and control the proper operation of the gas burner and inducer. The 50M51-843 controls a multiple tapped induction circulation blower. Signals interpreted during continual surveillance of the twostage thermostat and flame sensing element initiate automatic ignition of the burner, sensing of the flame, and system shutoff during normal operation. The control incorporates system fault analysis for quick gas flow shutoff, coupled with automatic ignition retry upon sensing a fault correction. The 50M51-843 quickly and easily replaces White-Rodgers 50M51-XXX controls. This kit includes: a 50M51-843 Ignition Control Module, a 21D64-2 Ignitor Kit.
  • White Rodgers 21M51U-843 Features
  • 120 VAC Ignitor Output
  • 120 VAC Two-Speed Inducer Output
  • 120 VAC Humidifier Output
  • 120 VAC Electronic Air Cleaner Output
  • 120 VAC 3-Speed PSC (Permanent Split Capacitor) Circulator Output
  • 2-Stage Gas Valve Output
  • Fuse Protection - 3 Amp
  • Furnace Status LED - Tri-Color (Green, Red and Amber)
  • Heat Fan OFF Delay (Dipswitch Selectable)
  • Fan ON Delay for Cooling
  • Auto Second Stage Delay (Dipswitch Selectable Mode)
  • Historical Fault Retrieval by Pushbutton
  • YLO, Y, W1, W2, R, G, C, TWIN Terminals
  • Pressure Switch Inputs and Monitoring
  • Flash Microprocessor with Non-Volatile Memory
  • Flame Current Measurement Points
Specifications
General Information
Type
Ignitor
UPC
662766460957
Warranty Information
Warranty ? A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Features
Features
    The 50M51-843 is a universal replacement control for two-stage automatic gas ignition controls employing a microprocessor to continually monitor, analyze, and control the proper operation of the gas burner and inducer. The 50M51-843 controls a multiple tapped induction circulation blower. Signals interpreted during continual surveillance of the twostage thermostat and flame sensing element initiate automatic ignition of the burner, sensing of the flame, and system shutoff during normal operation. The control incorporates system fault analysis for quick gas flow shutoff, coupled with automatic ignition retry upon sensing a fault correction. The 50M51-843 quickly and easily replaces White-Rodgers 50M51-XXX controls. This kit includes: a 50M51-843 Ignition Control Module, a 21D64-2 Ignitor Kit.
  • White Rodgers 21M51U-843 Features
  • 120 VAC Ignitor Output
  • 120 VAC Two-Speed Inducer Output
  • 120 VAC Humidifier Output
  • 120 VAC Electronic Air Cleaner Output
  • 120 VAC 3-Speed PSC (Permanent Split Capacitor) Circulator Output
  • 2-Stage Gas Valve Output
  • Fuse Protection - 3 Amp
  • Furnace Status LED - Tri-Color (Green, Red and Amber)
  • Heat Fan OFF Delay (Dipswitch Selectable)
  • Fan ON Delay for Cooling
  • Auto Second Stage Delay (Dipswitch Selectable Mode)
  • Historical Fault Retrieval by Pushbutton
  • YLO, Y, W1, W2, R, G, C, TWIN Terminals
  • Pressure Switch Inputs and Monitoring
  • Flash Microprocessor with Non-Volatile Memory
  • Flame Current Measurement Points
Specifications
General Information
Type
Ignitor
UPC
662766460957
Warranty Information
Warranty ? A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Product Specs
+
Specifications
General Information
Type
Ignitor
UPC
662766460957
Warranty Information
Warranty ? A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
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How-To Articles
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Manuals
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White Rodgers 21M51U-843 Ignition Module/Circulator Furnace Control Kit with Nitride Ignitor, 24 VAC
White Rodgers 21M51U-843
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