Section Assembly with Tankless Opening for EG65 Boilers

Weil‑McLain 321‑811‑130 Section Assembly for EG‑65 Boilers (with Tankless Opening) Engineered for the EG‑65 series, this cast‑iron block assembly includes a factory-opened tankless coil port—ideal for integrating a tankless domestic water heater into your boiler setup. It offers a sturdy, modular solution for both hot water and steam systems. ✅ Why install this Section Assembly? Purpose-built design: Specifically made for EG‑65 boilers, this assembly ensures seamless integration and reliable performance parts.weil-mclain.com +13 weil-mclain.com +13 afsupply.com +13 acwholesalers.com . Tankless coil-ready: Comes factory-prepared with the heater opening—no field drilling needed weil-mclain.com . Heavy-duty cast iron: Durable construction matching the boiler’s body, designed to resist heat stress and maintain longevity . Thermal efficiency boost: Keeps water and steam flow optimized, maintaining system efficiency and supporting attachment of tankless water heaters ferguson.com . ???? Specs That Matter Specification Detail Part Number 321‑811‑130 Compatibility EG‑65 boiler series Material Cast iron Function Section assembly w/ tankless opening; suits both water & steam systems Weight ~11 lb parts.weil-mclain.com +15 supplyhouse.com +15 afsupply.com +15 ⚙️ Installation Notes Pro-level rigging: Requires expert handling—aligning, torqueing, sealing to boiler standards—and water or steam system compatibility. Code compliance: Installation must meet boiler codes, particularly sealing and flue conduit requirements. Amateurs should not attempt; a licensed plumber or HVAC specialist is required. ????‍♂️ For Contractors vs DIY For Contractors: This OE assembly saves time—no need to prep the tankless port in the field. Durable materials and exact fit reduce callbacks and ensure professional system integration. For DIYers: While it simplifies part of the process, installation still demands professional-grade tools and knowledge of boiler piping, venting, and controls. Certification and compliance with local codes are essential. Summary: The 321‑811‑130 Section Assembly brings robust performance and installation efficiency for EG‑65 boilers, offering integrated tankless water-heater readiness in a durable cast-iron package. It streamlines boiler modifications while ensuring system integrity—ideal for pro-level jobs.