White-Rodgers Universal Two-stage HSI Integrated Variable Speed (ECM) Circulator Furnace Control Kit

Universal Two-stage HSI Integrated Variable Speed (ECM) Circulator Furnace Control Kit

White-Rodgers furnace controls include the 21V51U-843 universal two-stage his integrated furnace control kit which includes the module and igniter kit, replacing White-Rodgers 50V51-xxx and 50V61-xxx’s two-stage his systems with 80 v or 120 v igniters.

Features:

120 VAC Igniter Output
120 VAC Two-Speed Inducer Output
120 VAC Humidifier Output
120 VAC Electronic Air Cleaner Output
2-Stage Gas Valve Output
16-Pin Variable Speed Circulator 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, W, W2, R, G, C, O, BK / DS / Dehum terminals
Pressure switch inputs and monitoring
Flash microprocessor with non-volatile memory
Flame current measurement points
Replaces: White-Rodgers 50V51-xxx and all 50V61-xxx’s Two-Stage HSI systems with 80V or 120V Igniter

Specifications:

Operating Temperature Range: -40° to 175°F (-40° to 80°C)
Humidity Range: 5% to 93% relative humidity (non-condensing)
Gases Approved: Natural, Manufactured, Mixed, Liquefied Petroleum and LP Gas/Air Mixtures are all approved for use
Dimensions: 5-1/4″W x 8″H x 1-1/4″D

White-Rodgers, a recognized leader in climate control solutions, celebrates 75 years of business in 2012. Experience, integrity and customer service are still the tenets that mark this great company. From the humble beginnings of two engineers collaborating to solve the control problem of the day, to being the answer for your climate control needs, White-Rodgers is the respected name among industry professionals and home owners alike.

Additional White-Rodgers Links
View the Manufacturer Warranty
Browse all White-Rodgers Products
White-Rodgers Furnace Controls Collection

Specifications