{"product_id":"viessmann-vitodens-200-w-399-000-btu-gas-fired-wall-mounted-condensing-boiler-b2ha399","title":"Viessmann Vitodens 200-W 399,000 BTU Gas Fired Wall Mounted Condensing Boiler - B2HA399","description":"\u003ch2\u003eViessmann Vitodens 200‑W B2HA‑399 | 399,000 BTU Wall‑Mounted Gas Condensing Boiler\u003c\/h2\u003e\n\n\u003cp\u003e\nWant big boiler performance without taking up floor space? The \u003cstrong\u003eVitodens 200‑W B2HA‑399\u003c\/strong\u003e is a \u003cstrong\u003ewall‑mounted, high‑efficiency gas condensing boiler\u003c\/strong\u003e built for larger homes and light‑commercial projects. It modulates smoothly from \u003cstrong\u003e113–399 MBH\u003c\/strong\u003e to match real‑world demand, and its \u003cstrong\u003eInox‑Radial stainless steel heat exchanger\u003c\/strong\u003e helps keep efficiency high season after season.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Viessmann\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e B2HA‑399 (Vitodens 200‑W)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Wall‑Mounted, Category IV Condensing Gas Boiler\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel:\u003c\/strong\u003e Natural Gas or LP (conversion kit available)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Range:\u003c\/strong\u003e 113–399 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating Output (Typical):\u003c\/strong\u003e up to ~375 MBH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAFUE:\u003c\/strong\u003e ~94%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModulation:\u003c\/strong\u003e Up to ~6.5:1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeat Exchanger:\u003c\/strong\u003e 316Ti Inox‑Radial Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCombustion Control:\u003c\/strong\u003e Lambda Pro with Fully Modulating MatriX Cylinder Burner\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVenting:\u003c\/strong\u003e Direct‑vent sealed combustion or room‑air (per code)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVent Options:\u003c\/strong\u003e Concentric 100\/150 mm (≈4\"\/6\") or Two‑Pipe Systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Equivalent Vent Lengths:\u003c\/strong\u003e Generous runs (layout‑dependent; see manual)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeating Connections:\u003c\/strong\u003e 2\" NPT supply\/return\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas Connection:\u003c\/strong\u003e 1\" NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical:\u003c\/strong\u003e 120V, 60 Hz; outdoor temperature sensor included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e Vitotronic 200 (HO1B) with outdoor reset and diagnostics\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (W × D × H):\u003c\/strong\u003e ~23‑5\/8\" × 27\" × 44‑1\/2\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClearances:\u003c\/strong\u003e 0\" to combustibles at vent; service clearances per manual\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCascade Capability:\u003c\/strong\u003e Common‑vent\/manifold options; up to 8 boilers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eHigh Efficiency, Clean Combustion\u003c\/h4\u003e\n\u003cp\u003e\nThe fully modulating \u003cstrong\u003eMatriX cylinder burner\u003c\/strong\u003e and \u003cstrong\u003eLambda Pro\u003c\/strong\u003e combustion control keep the air‑to‑fuel mix dialed in—even when gas quality varies—helping the system run efficiently and cleanly.\n\u003c\/p\u003e\n\n\u003ch4\u003eBig Output, Right‑Sized Modulation\u003c\/h4\u003e\n\u003cp\u003e\nWith \u003cstrong\u003e113–399 MBH\u003c\/strong\u003e input and up to \u003cstrong\u003e~6.5:1\u003c\/strong\u003e modulation, the 200‑W can idle on \u003cstrong\u003emilder spring\/fall days\u003c\/strong\u003e and ramp up for peak demand. That reduces short‑cycling, improves comfort, and helps components last.\n\u003c\/p\u003e\n\n\u003ch4\u003eCompact, Wall‑Hung Footprint\u003c\/h4\u003e\n\u003cp\u003e\nA cabinet roughly \u003cstrong\u003e24\" wide × 27\" deep × 44‑1\/2\" high\u003c\/strong\u003e saves floor space in tight mechanical rooms. Front‑access design keeps annual service straightforward for your contractor.\n\u003c\/p\u003e\n\n\u003ch4\u003eFlexible Venting For Retrofits\u003c\/h4\u003e\n\u003cp\u003e\nChoose \u003cstrong\u003econcentric 100\/150 mm (≈4\"\/6\")\u003c\/strong\u003e or \u003cstrong\u003etwo‑pipe\u003c\/strong\u003e systems with generous equivalent lengths. Use direct‑vent sealed combustion or draw room air where code allows.\n\u003c\/p\u003e\n\n\u003ch4\u003eOutdoor‑Reset Intelligence\u003c\/h4\u003e\n\u003cp\u003e\nThe integrated \u003cstrong\u003eVitotronic 200\u003c\/strong\u003e control with \u003cstrong\u003eoutdoor reset\u003c\/strong\u003e automatically adjusts water temperature to the weather, helping lower fuel use while keeping rooms comfortable.\n\u003c\/p\u003e\n\n\u003ch4\u003eCascade‑Ready For Larger Loads\u003c\/h4\u003e\n\u003cp\u003e\nNeed more capacity? Manifold up to \u003cstrong\u003eeight Vitodens 200‑W\u003c\/strong\u003e units with common venting. The system stages boilers only as needed to match the load and maintain high efficiency.\n\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":43932128182323,"sku":"VIESB2HA399","price":11415.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5964\/8563\/files\/Vitodens-200-W_B2HA_front_1280x1280_transparent_76c7044c-f7c8-47ef-8c09-ccfe2e8672c1.png?v=1771885478","url":"https:\/\/plumbing-deals.com\/products\/viessmann-vitodens-200-w-399-000-btu-gas-fired-wall-mounted-condensing-boiler-b2ha399","provider":"Plumbing Deals","version":"1.0","type":"link"}