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Description
White-Rodgers 21V51U-843 Universal Two-stage HSI Integrated Variable Speed (ECM) Circulator Furnace Control Kit Universal Two-stage HSI Integrated Variable Speed (ECM) Circulator Furnace Control KitWhite-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 Output120 VAC Two-Speed Inducer Output120 VAC Humidifier Output120 VAC Electronic Air Cleaner Output2-Stage Gas Valve Output16-Pin Variable Speed Circulator OutputFuse Protection – 3 AmpFurnace Status LED – Tri-Color (Green, Red and Amber)Heat Fan OFF Delay (Dipswitch Selectable)Fan ON Delay for CoolingAuto Second Stage Delay (Dipswitch Selectable Mode)Historical fault retrieval by pushbuttonYLO, Y, W, W2, R, G, C, O, BK / DS / Dehum terminalsPressure switch inputs and monitoringFlash microprocessor with non-volatile memoryFlame current measurement pointsReplaces: White-Rodgers 50V51-xxx and all 50V61-xxx’s Two-Stage HSI systems with 80V or 120V IgniterSpecifications: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 useDimensions: 5-1/4"W x 8"H x 1-1/4"DWhite-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. Controllers N/A
