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Williamson-Thermoflo OWB-4 - 145K BTU - 85.0% AFUE - Hot Water Oil Boiler - Chimney Vent - Burner Sold Separately
Model:
OWB-4-T-S2-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
- OWB boilers are factory tested, ensuring reliability and properly functioning equipment.
- Factory Assembled
- OWB boilers are factory-assembled meaning that the boiler comes ready for installation. This includes the aluminized flue collector, swing-away burner mounting door, with the refractory blanket and recessed target wall in the combustion chamber.
- Easy Service
- With a swing-away burner door, top access cleanout cover, and plug-in wiring harness, servicing the OWB boiler easy.
- Product Includes
- Taco 007 Circulator Pump
"Uncover warm possibilities" with Williamson-Thermoflo's OWB Oil fired water boiler. The highly efficient OWB-4-T-S2-W pumps out 145,000 BTUs with a thermal efficiency rating of 85 percent. The OWB 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 temperature limit control, cast-iron sections with built-in separator, and an insulated heavy-gauge steel jacket. The OWB is also easily serviced with a swing-away burner door, top access cleanout cover, and plug-in wiring harness. Since it is factory tested and comes with a limited lifetime warranty on the heat exchanger, you can be absolutely sure that your investment is reliable and built to last.
Specifications
OWB-4-T-S2-W
General Information
Product Line
OWB
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.
Hot Water
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.
No
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
Assembly Type
Packaged
Includes Pump
Yes
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
85 %
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.
145000 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.
126000 BTU
Electrical Data
Phase
1
Frequency
60 Hz
Dimensions
Supply Connection
1 1/2 Inches
Return Connection
1 1/2 Inches
Product Height
35 5/8 Inches
Product Width
20 1/4 Inches
Product Depth
16 7/8 Inches
Product Weight
645 Pounds
Shipping Weight
655 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
Lifetime Years
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