{"product_id":"tjernlund-products-950-1031","title":"Tjernlund Products 950-1031 Fan Prover","description":"\u003cp\u003eThe \u003cstrong\u003eTjernlund Products 950-1031 Fan Prover\u003c\/strong\u003e is a critical safety component designed for \u003cstrong\u003eside wall power venters\u003c\/strong\u003e. This \u003cstrong\u003epressure switch kit\u003c\/strong\u003e serves as a fundamental interlock, ensuring that the \u003cstrong\u003eventilation system\u003c\/strong\u003e has established sufficient \u003cstrong\u003eairflow\u003c\/strong\u003e before the burner is allowed to fire. By monitoring the static pressure differential, the \u003cstrong\u003e950-1031\u003c\/strong\u003e prevents the operation of high-efficiency heating appliances under hazardous \"no-flow\" conditions, protecting the equipment and the structure from flue gas backup.\u003c\/p\u003e\n\n\u003cp\u003eThis comprehensive kit includes a \u003cstrong\u003emetal sensing tube\u003c\/strong\u003e and a specialized mounting bracket, calibrated to a \u003cstrong\u003e0.40\" WC\u003c\/strong\u003e fixed set point. It is engineered for seamless integration with \u003cstrong\u003eTjernlund HS2, HST-2, HSUL-2, and HS115-2\u003c\/strong\u003e models. As a technician-grade \u003cstrong\u003efan prover kit\u003c\/strong\u003e, it utilizes high-precision diaphragm technology to provide reliable electrical contact closure even in demanding mechanical room environments. Installing this original equipment manufacturer (OEM) part ensures the \u003cstrong\u003eproper airflow\u003c\/strong\u003e and \u003cstrong\u003esystem safety\u003c\/strong\u003e required to meet rigorous building codes and manufacturer specifications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Pressure Sensing:\u003c\/strong\u003e Calibrated to 0.40\" Water Column (WC) to ensure the burner only activates when \u003cstrong\u003edraft induction\u003c\/strong\u003e is fully established.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete Installation Kit:\u003c\/strong\u003e Includes the \u003cstrong\u003esensing tube\u003c\/strong\u003e and mounting hardware required for a standard \u003cstrong\u003epower venter\u003c\/strong\u003e retrofit or repair.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel Compatibility:\u003c\/strong\u003e Directly compatible with \u003cstrong\u003eTjernlund HS-series\u003c\/strong\u003e power venters, maintaining factory-spec performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhanced Safety:\u003c\/strong\u003e Acts as a primary \u003cstrong\u003esafety interlock\u003c\/strong\u003e to prevent the buildup of combustion byproducts in the event of fan failure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial Durability:\u003c\/strong\u003e Rugged construction designed to withstand the thermal cycling and vibration found in commercial or residential \u003cstrong\u003eHVAC ventilation\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Questions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I verify if the 950-1031 is the correct switch for my venter?\u003c\/strong\u003e\u003cbr\u003e\nThis \u003cstrong\u003efan prover\u003c\/strong\u003e is specifically engineered for the \u003cstrong\u003eTjernlund HS2, HST-2, HSUL-2, and HS115-2\u003c\/strong\u003e series. Verify your model number on the venter housing before installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the purpose of the sensing tube in this kit?\u003c\/strong\u003e\u003cbr\u003e\nThe \u003cstrong\u003esensing tube\u003c\/strong\u003e facilitates the \u003cstrong\u003epressure differential\u003c\/strong\u003e measurement between the venter's inlet and the atmosphere, allowing the internal diaphragm to trigger the \u003cstrong\u003efan prover\u003c\/strong\u003e electrical switch.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan the pressure set point be adjusted in the field?\u003c\/strong\u003e\u003cbr\u003e\nNo, the \u003cstrong\u003e950-1031\u003c\/strong\u003e features a factory-calibrated 0.40\" WC set point to ensure consistent \u003cstrong\u003esystem safety\u003c\/strong\u003e and to prevent unauthorized tampering with \u003cstrong\u003eairflow\u003c\/strong\u003e thresholds.\u003c\/p\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Tjernlund Products","offers":[{"title":"Default Title","offer_id":43465311846578,"sku":"950-1031","price":143.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Pic_6fc96199-da16-450c-82b8-58cae0970807.png?v=1701806717","url":"https:\/\/www.gsistore.com\/en-ca\/products\/tjernlund-products-950-1031","provider":"GSIstore","version":"1.0","type":"link"}