{"product_id":"weil-mclain-381-354-535-conversion-kit","title":"Weil McLain 381-354-535 Conversion Kit","description":"\u003cp\u003eThe \u003cstrong\u003eWeil-McLain 381-354-535\u003c\/strong\u003e is a performance-critical \u003cstrong\u003enatural gas high altitude conversion kit\u003c\/strong\u003e designed to calibrate combustion parameters for hydronic systems operating in low-oxygen environments. At elevations above 2,000 feet, reduced air density necessitates precise adjustments to the \u003cstrong\u003efuel-to-air ratio\u003c\/strong\u003e to prevent incomplete combustion and soot accumulation. This kit modifies the gas input and burner performance to ensure atmospheric or forced draft boilers maintain a stable flame signal and consistent ignition. By utilizing this \u003cstrong\u003eWeil-McLain boiler conversion kit\u003c\/strong\u003e, technicians can effectively de-rate the appliance as required by local codes and manufacturer specifications, protecting the heat exchanger from thermal stress caused by improper firing rates. Engineered specifically for \u003cstrong\u003ehigh altitude boiler adjustment\u003c\/strong\u003e, this hardware ensures that the burner maintains peak thermal efficiency and operational reliability even when face-to-face with the challenges of thin atmospheric conditions. Proper installation of this \u003cstrong\u003enatural gas altitude kit\u003c\/strong\u003e is essential for maintaining safe CO levels and preventing nuisance lockouts on high-limit sensors.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits:\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003eEnsures precise \u003cstrong\u003ecombustion tuning\u003c\/strong\u003e for high-elevation Weil-McLain boiler installations.\u003c\/li\u003e\n  \u003cli\u003eCorrects the stoichiometric ratio to accommodate reduced oxygen levels in thin air.\u003c\/li\u003e\n  \u003cli\u003ePromotes stable ignition and prevents flame lifting or resonance during startup.\u003c\/li\u003e\n  \u003cli\u003eOptimizes burner efficiency to maintain BTU output standards at altitude.\u003c\/li\u003e\n  \u003cli\u003eRequired for site-specific compliance when operating natural gas equipment above standard sea-level ratings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions:\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eWhen is a high altitude conversion kit required?\u003c\/strong\u003e\u003cbr\u003e\nMost Weil-McLain units require these modifications when the installation site exceeds 2,000 feet above sea level to compensate for decreased atmospheric pressure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use this kit for propane (LP) conversions?\u003c\/strong\u003e\u003cbr\u003e\nNo, this specific part number is engineered strictly for \u003cstrong\u003enatural gas high altitude conversion\u003c\/strong\u003e. Propane applications require a different orifice and spring set configuration.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy shouldn't I just adjust the gas valve offset?\u003c\/strong\u003e\u003cbr\u003e\nField adjustments without the specific orifices or components provided in the manufacturer's kit often lead to improper manifold pressure, risking damage to the burner assembly and heat exchanger.\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":"Weil McLain","offers":[{"title":"Default Title","offer_id":43789916897458,"sku":"381-354-535","price":71.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/ac-parts-1000x1000_bcaccf4a-0381-44c3-84d2-36ed5ab9d2a9.webp?v=1755718520","url":"https:\/\/www.gsistore.com\/products\/weil-mclain-381-354-535-conversion-kit","provider":"GSIstore","version":"1.0","type":"link"}