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Weil-McLain

Weil-McLain Ultra Series 4 80,000 BTU Condensing Gas Boiler - W383500732

Weil-McLain Ultra Series 4 80,000 BTU Condensing Gas Boiler - W383500732

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Weil-McLain Ultra Series 4 80,000 BTU Condensing Gas Boiler - W383500732

Weil-McLain is a leading North American Brand of hydronic comfort heating systems for residential, commercial and institutional buildings, since 1881. Contractors, engineers, architects, homeowners, and facility managers alike rely on Weil-McLain boilers for their comfort heating needs. Installed in homes, offices, schools, restaurants, hotels, and other facilities throughout North America, the Weil-McLain brand is among the most trusted and often used in the building industry.

Features
  • Cast aluminum coated heat exchanger
  • Designed to operate in low temperature condensing applications
  • Outdoor reset and domestic hot water priority
  • Modulates with 5:1 turn-down ratio
  • High grade stainless steel burner features quiet operation
  • U-Control gives the power for easy set-up and maintenance
  • Multiple set-up and zone options
  • System sensing recognizes system and outdoor temperatures
  • Temperature management for up to three different set-points
  • Control multiple boilers from a single control panel
  • Standard screen messages provide service alerts and maintenance reminders
What Our Experts Think
  • High-efficiency condensing design: Delivers up to 95% AFUE performance, meaning more heat delivered with less fuel — excellent for reducing energy costs.

  • Right-sized capacity: 80,000 BTU output suits mid- to large-sized homes or commercial spaces with significant heating demand.

  • Durable, reliable build: Weil-McLain’s Ultra Series is known for robust construction and long-term reliability in everyday heating applications.

  • Quiet and smooth operation: Engineered for stable combustion and reduced noise compared with older boiler models.

Product Q&A
  • What type of boiler is this?
    A high-efficiency condensing gas boiler that recovers heat from exhaust gases to improve overall efficiency.

  • What is the recommended application?
    Designed for forced hot water heating in residential and light commercial systems (hydronic baseboard, radiators, or in-floor heating).

  • What fuel does it use?
    Natural gas (verify model configuration if converting to LP).

  • Does it require a special venting system?
    Yes — condensing boilers typically use PVC or CPVC for low-temperature venting because of cooler exhaust gases.

Maintenance Tips
  • Annual professional tune-up: Have a qualified HVAC technician inspect and clean the burner, heat exchanger, and controls before heating season.

  • Check condensate drain: Ensure the condensate line is clear and draining properly to avoid blockages and corrosion.

  • Monitor pressure: Keep system pressure within manufacturer-recommended range and adjust as needed.

  • Clean air intake and vents: Clear dust and debris from intake vents and combustion air openings for safe operation.

  • Inspect for leaks: Periodically check around fittings, valves, and connections for any signs of water or gas leaks.