{"product_id":"tjernlund-products-950-1030","title":"Tjernlund Products 950-1030 Fan Prover","description":"\u003cp\u003eThe \u003cstrong\u003eTjernlund 950-1030 Fan Prover\u003c\/strong\u003e is a critical safety component designed for \u003cstrong\u003esidewall power venter\u003c\/strong\u003e applications. Engineered to ensure proper drafting and vent operation, this \u003cstrong\u003epressure switch kit\u003c\/strong\u003e monitors the pressure differential produced by the blower and allows the burner to fire only when safe airflow is established. This kit is a direct \u003cstrong\u003eOEM replacement part\u003c\/strong\u003e for several high-demand units, including the \u003cstrong\u003eTjernlund HS1\u003c\/strong\u003e, HSJ, and HSUL series. \u003c\/p\u003e\n\n\u003cp\u003eIncluded in this package is the \u003cstrong\u003e950-1030 sensing tube kit\u003c\/strong\u003e, which provides the necessary hardware to sample air pressure from the positive discharge housing or the negative inlet side, depending on the specific venter model. For veteran contractors, the \u003cstrong\u003eTjernlund 950-1030 air switch\u003c\/strong\u003e is essential for maintaining code compliance and preventing hazardous conditions like combustion gas spillage. Its rugged construction and precise calibration make it the standard choice for \u003cstrong\u003eHVAC power venting systems\u003c\/strong\u003e that require consistent signal verification under varying load conditions.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Engineered for use with \u003cstrong\u003eTjernlund HS1, HSJ, HST, and HSUL\u003c\/strong\u003e series power venters.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eComplete Sensing Solution:\u003c\/strong\u003e Includes the \u003cstrong\u003esensing tube kit\u003c\/strong\u003e for simplified out-of-the-box installation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrecision Calibration:\u003c\/strong\u003e Set to a specific -0.40\" W.C. (or equivalent per model) to ensure the burner only operates during optimal draft.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSafety Compliance:\u003c\/strong\u003e Acts as a primary interlock to prevent equipment operation during vent blockages or motor failure.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOEM Reliability:\u003c\/strong\u003e Genuine \u003cstrong\u003eTjernlund replacement part\u003c\/strong\u003e ensures exact fit and performance without field modifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eWhich Power Venter models use the 950-1030 kit?\u003c\/strong\u003e\u003cbr\u003e\nThis kit is compatible with \u003cstrong\u003eTjernlund HS1, HSJ, HSUL-J, HST-J, HS115-J, HSUL-1, HST-1, and HS115-1\u003c\/strong\u003e models. It is frequently applied in residential and light commercial sidewall venting setups.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat is the purpose of the sensing tube?\u003c\/strong\u003e\u003cbr\u003e\nThe sensing tube connects the \u003cstrong\u003efan prover\u003c\/strong\u003e to the venter housing, allowing the switch to \"prove\" the fan is running by measuring the pressure difference before closing the circuit to the burner.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use this as a substitute for other pressure switches?\u003c\/strong\u003e\u003cbr\u003e\nWhile it is a standard \u003cstrong\u003eair pressure switch\u003c\/strong\u003e, technical specs (such as the set point and contact rating) are specific to Tjernlund systems. Verify your model's requirement for a -0.40\" W.C. or similar fixed setting before swapping.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong style=\"color: red;\"\u003eThis item is not eligible for free shipping.\u003c\/strong\u003e\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":43465312796850,"sku":"950-1030","price":134.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Pic_7d9723a3-e662-4126-9656-e30b4cd210ad.png?v=1733948306","url":"https:\/\/www.gsistore.com\/en-ca\/products\/tjernlund-products-950-1030","provider":"GSIstore","version":"1.0","type":"link"}