Series WB90™

Products » Residential Boilers » Series WB90™

The new Series WB90™ oil-fired boiler is ENERGY STAR® efficient with a 90% AFUE. The residential, cast iron boiler is designed for hot water systems. The WB90-03 can be vented in both direct and natural draft (chimney) venting capacities; the WB90-04 is approved for natural draft venting and will be available soon for direct vent applications.

The WB90™ boiler is equipped with a high-efficiency, flame retention Carlin EZ H2L burner with Hi-Lo firing. The burner resides within a sleek, two-piece molded boiler cover with removable lens for viewing the control.  Also standard on the WB90 is a boiler reset control with low water cut-off, self-diagnosing burner control with indicator light, and a 120 volt courtesy outlet.  Features such as a full plate swing-out door, top cleanout and terminal strip for simplified field wiring help with ease of installation and service.

Type: Residential
Construction: Cast Iron
Fuel: Oil-Fired
Input: 70 to 182 MBH
Output: 111 to 160 MBH
Trim: Water
Combustion: Flame Retention Burner

 

  • 90% AFUE - ENERGY STAR® Efficient
  • Residential, Cast Iron, Oil Boiler
  • Hot Water Boiler
  • Safety Controls 
  • High Efficiency, Flame Retention, 2-stage Burner
  • Full Plate Swing-Out Door
  • ETL Certified for U.S. and Canada

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  • AHRI Member
  Series WB90™      Water Content, Gallons
Model Number Input Rate1 Heating Capacity4, MBH Net 
Ratings2,3
AFUE4, %
Minimum Maximum Minimum Maximum
GPH MBH GPH MBH
WB90-03 0.90 126 .05 70 111 97 90.0 11.75
WB90-04 1.30 182 0.75 105 160 139 90.0 14.75

1 Burner input based on No. 2 fule oil with a aheating value of 140,000 Btu per gallon.

2 Water ratings based on an allowance of 1.15.

3 Consult factory before selecting a boiler for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc.

4 Heating Capacity and Annual Fuel Utilization Efficiency (AFUE) ratings are based on U.S. Government tests, with 13% CO2.
Before purchasing this appliance, read important information about its estimated annual energy consumptions or energy efficiency rating that is available from your retailer.

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Series WB90™ Boiler Dimensions

Boiler Model Number Jacket Depth
"A"
Jacket Width
"B"
Jacket Height
"C"
Vent Size Diameter
"D"
WB90-03 18-3/8" 23-5/8" 39-1/4" 4"
WB90-04
22-3/8" 23-5/8" 39-1/4" 4"

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