White Rodgers 21M51U-843
White Rodgers 21M51U-843
White Rodgers 21M51U-843
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White Rodgers 21M51U-843
White Rodgers 21M51U-843

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

Model:

21M51U-843

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$210.00
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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
Model: 21M51U-843
$210.00
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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
California residents see
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm..
For more information go to: www.p65Warnings.ca.gov

Specifications

21M51U-843
specs product image PID-35856
Overview
Product Category
Thermostats and Controls
UPC
662766460957
General Information
Type
Ignitor
Product Category
Thermostats and Controls
Dimensions
Shipping Weight
5.1 Pounds
Warranty Information
Warranty Learn More
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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White Rodgers 21M51U-843 Reviews & Ratings

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