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Williamson-Thermoflo OSB-4 - 108K BTU - 84.0% AFUE - Steam Oil Boiler - Chimney Vent - Burner Sold Separately
Model:
OSB-4-P-S2-W-W
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Recommended Accessories
Expert Recommended Accessories
Selected by Ken, our Expert
Required Accessories
9
These accessories are required to properly setup/install this product.
Optional Accessories
10
Features
- Factory Tested
- OSB boilers are factory tested, ensuring reliability and properly functioning equipment.
- Factory Packaged
- OSB boilers are factory packaged meaning that the boiler comes to you mostly assembled and ready for installation.
- Easy Service
- With a swing-away burner door, top access cleanout cover, and plug-in wiring harness, servicing the OSB boiler easy.
- 10 Year Warranty
- A limited 10 year warranty on the cast iron sections means that you can rest assured that your investment is covered, should there be a problem.
"Uncover warm possibilities" with Williamson-Thermoflo's OSB oil fired steam boiler. The efficient OSB-4-P-S2-W-W pumps out 144,000 BTUs with a thermal efficiency rating rating of 84 percent. The OSB is also designed with a solenoid valve, PSC motor, and a solid state igniter to maintain that efficiency. This boiler is equipped with many features, such as a plug-in wiring harness, cast-iron sections, and an insulated heavy-gauge steel jacket. The OSB is also easily serviced with a swing-away burner door and top access cleanout cover. Since it is factory tested and comes with a limited 10 year warrant on cast iron sections, you can be absolutely sure that your investment is reliable and built to last.
Specifications
OSB-4-P-S2-W-W
General Information
Product Line
OSB
Medium
Medium
Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
Steam
Heat Exchanger Material
Cast Iron
Fuel Type
Fuel Type
To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Oil
Combustion Type
Combustion Type
Condensing appliances use leftover thermal energy from combustion gases to heat water in a secondary heat exchanger, resulting in higher efficiency and lower exhaust temperature.
Conventional
Vent Type
Vent Type
Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
Chimney Vent
DHW Production
DHW Production
DHW (Domestic Hot Water) is potable water for uses other than space heat. Some boilers are able to provide DHW "out of the box", while others can do so with the purchase of optional accessories.
Available
Modulating/Staging
Modulating/Staging
Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control. Learn More
Single Stage
Mount Type
Floor
Maximum Altitude
2000 Feet
Includes Pump
No
Assembly Type
Semi-Packaged
Burner Model
Sold Separately
Performance
AFUE
AFUE
AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace. Learn More
84 %
Input Rate
1.2 GPH
DOE Heating Capacity
DOE Heating Capacity
Also referred to as Gross Output, this is the output of a boiler after accounting for combustion efficiency. We recommend sizing hot water boilers based on the DOE Heating Capacity.
144000 BTU
Net I=B=R Capacity
Net I=B=R Capacity
I=B=R, also referred to as Net Output or AHRI Capacity, is the rated heat output of a boiler after accounting for combustion efficiency, piping loss, and an extra pickup factor. We recommend sizing steam boilers based on the I=B=R rating.
108000 BTU
Electrical Data
Phase
1
Frequency
60 Hz
Dimensions
Supply Connection
2 1/2 Inches
Return Connection
2 Inches
Product Height
35 5/8 Inches
Product Width
20 1/4 Inches
Product Depth
20 Inches
Product Weight
705 Pounds
Shipping Weight
715 Pounds
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
3 Years
Heat Exchanger Warranty
10 Years
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