{"product_id":"tjernlund-products-950-2064","title":"Tjernlund Products 950-2064 Limit Swt","description":"\u003cp\u003eAs a veteran HVACR technician, you know that keeping a siding or power vent system operational depends on reliable safety interlocks. The \u003cstrong\u003eTjernlund 950-2064 Limit Switch\u003c\/strong\u003e is a critical \u003cstrong\u003e185-degree Fahrenheit linear limit switch\u003c\/strong\u003e specifically engineered for high-performance venting applications. This \u003cstrong\u003espillage sensing switch\u003c\/strong\u003e is a direct replacement for \u003cstrong\u003eTjernlund VP-2, VP-3, WHK-2, and WHK-E\u003c\/strong\u003e models, providing a manual reset safety layer that prevents burner operation if flue gas temperatures exceed safe thresholds or if spillage occurs at the draft hood. Designed for the \u003cstrong\u003eHVAC ventilation safety\u003c\/strong\u003e circuit, it features a normally closed contact that opens precisely at its \u003cstrong\u003e185°F set point\u003c\/strong\u003e. Whether you are troubleshooting a \u003cstrong\u003eventing malfunction\u003c\/strong\u003e or performing routine \u003cstrong\u003eTjernlund furnace maintenance\u003c\/strong\u003e, installing this \u003cstrong\u003eOEM replacement limit switch\u003c\/strong\u003e ensures your combustion system remains within technical specifications and code requirements. This \u003cstrong\u003elinear limit sensor\u003c\/strong\u003e is built to withstand industrial heating environments, offering long-term reliability for residential and light commercial \u003cstrong\u003eside wall venting\u003c\/strong\u003e setups.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Compatibility:\u003c\/strong\u003e Engineered specifically for integration with Tjernlund VP-2, VP-3, VP-2F, VP-3F, WHK-2, and WHK-E models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual Safety Reset:\u003c\/strong\u003e Features a dedicated reset button to ensure a technician inspects the system for flue blockage before restarting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Thermal Control:\u003c\/strong\u003e Maintains a fixed 185°F actuation point to detect overheating or improper draft conditions instantly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built with a robust housing and high-quality electrical contacts for reliable switching in extreme heat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Compact 1-inch linear design allows for seamless mounting on draft hoods, diverters, or barometric controls.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs this switch an automatic or manual reset?\u003c\/strong\u003e The Tjernlund 950-2064 is a manual reset switch, requiring human intervention to verify system integrity once the temperature threshold is tripped.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat happens if the switch trips repeatedly?\u003c\/strong\u003e Repeated tripping usually indicates a venting malfunction, such as a blocked flue or insufficient post-purge settings. Do not operate the heater until the source of excessive heat is repaired.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan I use this for other power venter brands?\u003c\/strong\u003e This part is specifically calibrated and designed for Tjernlund systems; using it with non-compatible hardware may compromise safety protocols.\u003c\/li\u003e\n\u003c\/ul\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":43465311649970,"sku":"950-2064","price":160.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Pic_12bad449-8bbe-4e05-a698-cc8b6e5e4a16.png?v=1701804292","url":"https:\/\/www.gsistore.com\/en-ca\/products\/tjernlund-products-950-2064","provider":"GSIstore","version":"1.0","type":"link"}