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Weil-Mclain 118355501 EG-35 100 MBtu Input 82% AFUE Natural Gas Steam Boiler with Tankless Coil Opening (Knockdown – Assembly Required)


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Product details

Weil-Mclain 118355501 EG-35 100 MBtu Input 82% AFUE Natural Gas Steam Boiler with Tankless Coil Opening (Knockdown – Assembly Required)

Knockdown Boiler Components

  • Comes with automatic vent damper for higher efficiencies and reduced fuel consumption
  • Easy access to controls for convenient servicing
  • Configured for Natural Gas, intermittent electronic ignition only
  • A versatile gas cast iron boiler for water or steam applications
  • Cast iron heat exchanger
  • Up to 84% AFUE


blanco/water boiler_1


  • Factory-assembled section block
  • Insulated extended jacket
  • Horizontal to vertical draft hood
  • Automatic vent damper (additional for EG-75)
  • Combination gas valve for 24 volt
  • Non-linting pilot burner
  • Stainless steel burners
  • Electrical junction box
  • Spill switch
  • Rollout thermal fuse element


  • 15 PSI ASME relief valve
  • High-limit pressure control
  • Low water cutoff-electrode type
  • 40 VA transformer
  • Steam pressure gauge
  • Siphon
  • Gauge cocks and glass
  • Intermittent electronic ignition system with Weil-McLain UCM universal ignition control module
blanco/water boiler


  • Packaged steam boilers—factory assembled and tested (P-EG-30 through 65 only)
  • Left end section with openings for tankless heaters
  • Tankless heaters, heater cover plates, and controls
  • Automatic vent damper for EG-75 with electronic ignition
  • Outdoor reset kit (for water boilers without tankless only, part #381-356-586) Low cost, simple plug-in sensor-check local utility program for possible rebate.


  • Residential—water: 20 Years Heat Exchanger; 2 Years Parts
  • Residential—steam: 10 Years Heat Exchanger; 2 Years Parts
  • Commercial: 10 Years Heat Exchanger; 1 Year Parts
See All Weil-McLain Products

Specification Sheet

Basic Information
MPN ? Manufacturer Part Number 118-355-501
UPC / GTIN 672619220003
Manufacturer Weil-McLain
Series ? A manufacturer's grouping of items that match, coordinate, or complement each other. EG Series 6
Dimensions and Measurements
Weight ? Weight 430.00
BTU Input 100,000
AFUE 82%
Vent Size (Inches) 5"
Height (Inches) ? The vertical measurement from bottom to top, measured in inches. 33-3/4"
Length (Inches) ? The distance of the product's longest side, measured in inches. 27-5/8"
Width (Inches) ? The horizontal measurement from left to right, measured in inches. 17"
Characteristics and Features
Material ? The material(s) used in the construction of the product. Cast Iron
Boiler Type Residential
Fuel Type Natural Gas
Venting Chimney Vent

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