Spark Ignition Cast Iron Gas Boiler 91.4% - 140,000 BTU

Spark Ignition Cast Iron Gas Boiler 91.4% - 140,000 BTU

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Availability: In stock

Model #: GV90+ 5
Brand : Weil-McLain

Availability: In stock


  • 91.4% AFUE

  • Spark Ignition Cast Iron Gas Boiler

  • Natural or Propane Gas

  • 140,000 BTU

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Weil-Mclain Spark Ignition Cast Iron Gas Boiler 91.4% - 140,000 BTU-GV90+ 5

Weil-McLain® gas-fired boilers are designed for improved fuel economy and long-lasting performance. Constructed of highly durable components, our high efficiency gas boilers deliver quiet, consistent warmth. A variety of models are available to meet your specific residential and commercial heating needs.  GV90+ is the first cast iron gas boiler vented with PVC -- saving 90% over the cost of stainless steel venting material per foot.

Product Features

  • Weil-McLain Control Module and Ignition Control
    Designed for Weil-McLain...mistake-proof wiring...diagnostic indicator lights.
  • Compact Design
    Saves valuable living space. Boiler is only 28 inches high, 23 inches deep.
  • High Grade Stainless Steel Burners
    Burners provide fixed primary air... no air adjustment required. Provide quieter ignition, longer life, and improved combustion.
  • Wiring Harness
    Plug-in connectors that attach only one way to assure mistake-proof wiring for installation and component replacement.
  • Easy Power Hook-up
    J-box located on outside of boiler with pre-stripped wires.
  • Convenient Servicing
    Accessible controls...control module with diagnostic indicator lights... simplified wiring... vertical cleaning.
  • Factory Tested
    Every boiler is factory tested to assure reliable operation.
  • Improved Parts Kits
    Parts furnished in convenient kits.
  • Multiple Boiler Systems
    Use two or more high-efficiency CGa boilers in place of one large-capacity boiler to meet the space heating requirements of larger buildings.
  • Cast Iron Sections with Elastomer Sealing Rings
    Boiler sections are made of durable cast iron for strength, efficiency and long life. Modern elastomer sealing rings in the port openings assure a permanent watertight seal.
  • Temperature and Pressure Gauge
    New large-faced gauge features easy installation, increased accuracy and easy monitoring.

Standard Equipment

  • Factory tested
  • Insulated extended steel jacket
  • Cast iron sections with built-in air separator
  • Stainless steel secondary heat exchanger with air separator
  • Steel base
  • Control module with indicator lights
  • Blower assembly with observation port
  • Gas/air manifold assembly
  • Gas/air orifice plate for natural gas (separate plate furnished for conversion to propane)
  • Stainless steel burner cone and ring assembly
  • Negative regulation gas valve
  • Hot surface ignition system
  • Air pressure switch
  • System circulator*
  • Built-in bypass circulator system with sensor for temperature control*
  • Condensate drain trap
  • Sidewall vent termination kit**
  • 40VA transformer
  • Electrical Junction box
  • 30 PSI ASME relief valve (boiler sections and secondary heat exchanger tested for 50 PSI working pressure)
  • Water temperature limit switch
  • Section block temperature limit switch
  • Combination pressure-temperature gauge
  • Drain valve Flue thermal fuse
  • Water treatment - inhibitor & test kit

Additional Equipment

  • Concentric vent kit
  • Condenser neutralizer kit
  • Expansion tank package # 109 - sizes 3 through 5; #110 - size 6. Shipped in separate carton
  • High altitude kit
  • W-M indirect fired water heaters
  • W-M Pool heaters
  • W-M baseboard units

*Circulators supplied with boiler cannot be removed and cannot be used as a zone circulator in multiple zone systems.

**Includes inside and outside plates, vent cap and hardware.

Additional Information

Brand Weil-McLain
Heating Type Hot Water
Mounting Type Floor Standing
Energy Star Rated No
Warranty 20 Years Heat Exchanger Warranty, 1 Year Parts Warranty provided by