{"product_id":"emerson-climate-technologies-21m51u-843-universal-two-stage-hsi-integrated-3-speed-psc-furnace-control-kit-replacement-50m51-242","title":"Emerson Climate Technologies 21M51U-843 Universal Two-Stage HSI Integrated 3-Speed PSC Furnace Control Kit REPLACEMENT 50M51-242","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe Emerson Climate Technologies 21M51U-843 is a universal furnace control kit that is ideal for replacing White Rodgers 50M51-242 and compatible models. This kit allows for straightforward installation and promotes effective system operation. It comes with a 120 VAC ignitor output, a two-speed inducer output, and a three-speed PSC circulator output. The kit also includes the 21D64-2 Silicon Nitride ignitor and control module.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIncludes ignition control module and universal 120V nitride ignitor kit\u003c\/li\u003e\n\u003cli\u003eFeatures fuse protection, historical fault retrieval, and flame current measurement\u003c\/li\u003e\n\u003cli\u003eOffers delays for heat fan off, fan on for cooling, and auto second stage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Highlights\u003c\/h4\u003e\u003cp\u003eThe 21M51U-843 provides extensive control capabilities, with outputs for humidifiers and electronic air cleaners, making it suitable for a range of heating setups.\u003c\/p\u003e\u003ch3\u003eProduct Information\u003c\/h3\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: Emerson Climate Technologies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number\u003c\/strong\u003e: 21M51U-843\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type\u003c\/strong\u003e: Intermittent Hot Surface Pilot\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStages\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature Range\u003c\/strong\u003e: -40 to 175 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumidity Range\u003c\/strong\u003e: 5% to 93% Relative Humidity (Non-Condensing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 5.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Method\u003c\/strong\u003e: Convection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type\u003c\/strong\u003e: Natural Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components\u003c\/strong\u003e: Furnace control kit\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EMERSON CLIMATE TECHNOLOGIES","offers":[{"title":"Default Title","offer_id":50487495459122,"sku":"21M51U-843","price":397.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/254998581.jpg?v=1759732056","url":"https:\/\/voomisupply.com\/products\/emerson-climate-technologies-21m51u-843-universal-two-stage-hsi-integrated-3-speed-psc-furnace-control-kit-replacement-50m51-242","provider":"Voomi Supply","version":"1.0","type":"link"}