Oil-Fired Chimney Vent Water Boiler, 100MBHOP , 84% AFUE, Series 3

Williamson OWB-3-T-S3-W Oil-Fired Water Boiler – Series 3 The Williamson OWB-3-T-S3-W is a high-efficiency, oil-fired, cast iron water boiler designed for residential and light commercial applications. With an AFUE of up to 87%, this unit delivers reliable performance and energy savings. sidharvey.com Key Features High Efficiency: AFUE ratings up to 87% ensure optimal fuel utilization. Robust Construction: Cast iron heat exchanger with built-in air separator and insulated heavy-gauge steel jacket for durability and heat retention. afsupply.com +6 sidharvey.com +6 24hr.supply +6 Advanced Burner Components: Equipped with a solenoid valve, PSC motor, and solid-state ignitor to enhance combustion efficiency. sidharvey.com +6 afsupply.com +6 afsupply.com +6 Service-Friendly Design: Features a swing-away burner door, top access cleanout cover, and plug-in wiring harness for easy maintenance. sidharvey.com +6 afsupply.com +6 afsupply.com +6 Enhanced Safety Controls: Includes temperature limit control, low water cut-off function, and thermal pre-purge to ensure safe operation. 24hr.supply +2 williamson-thermoflo.com +2 generalplumbingsupply.net +2 Technical Specifications Model: OWB-3-T-S3-W Input Rate: 0.70 to 0.95 GPH (98,000 to 133,000 BTU/h) 24hr.supply Heating Capacity: 86,000 to 115,000 BTU/h Net I=B=R Rating: 75,000 to 100,000 BTU/h AFUE: Up to 87% Voltage: 120V, 1 Phase Dimensions: Height: 35.62", Width: 20.25", Depth: 13.75" unitedsupplyusa.com +6 24hr.supply +6 afsupply.com +6 Venting: Chimney vent with rear flue outlet; top flue option available with kit generalplumbingsupply.net +5 williamson-thermoflo.com +5 24hr.supply +5 Burner: Sold separately; compatible with Beckett, Carlin, and Riello burners orders.sidharvey.com +2 sidharvey.com +2 williamson-thermoflo.com +2 Installation Considerations The OWB-3-T-S3-W is factory-assembled and tested, facilitating straightforward installation. It is recommended that a licensed HVAC professional install the unit to ensure compliance with local codes and optimal performance. afsupply.com +1 afsupply.com +1 Warranty Heat Exchanger: Limited lifetime warranty unitedsupplyusa.com +11 afsupply.com +11 afsupply.com +11 Parts: 3-year limited warranty sidharvey.com +1 24hr.supply +1 Williamson OWB-3-T-S3-W Oil-Fired Water Boiler – Series 3 The Williamson OWB-3-T-S3-W is a high-efficiency, oil-fired, cast iron water boiler designed for residential and light commercial applications. With an AFUE of up to 87%, this unit delivers reliable performance and energy savings. sidharvey.com Key Features High Efficiency: AFUE ratings up to 87% ensure optimal fuel utilization. Robust Construction: Cast iron heat exchanger with built-in air separator and insulated heavy-gauge steel jacket for durability and heat retention. afsupply.com +6 sidharvey.com +6 24hr.supply +6 Advanced Burner Components: Equipped with a solenoid valve, PSC motor, and solid-state ignitor to enhance combustion efficiency. sidharvey.com +6 afsupply.com +6 afsupply.com +6 Service-Friendly Design: Features a swing-away burner door, top access cleanout cover, and plug-in wiring harness for easy maintenance. sidharvey.com +6 afsupply.com +6 afsupply.com +6 Enhanced Safety Controls: Includes temperature limit control, low water cut-off function, and thermal pre-purge to ensure safe operation. 24hr.supply +2 williamson-thermoflo.com +2 generalplumbingsupply.net +2 Technical Specifications Model: OWB-3-T-S3-W Input Rate: 0.70 to 0.95 GPH (98,000 to 133,000 BTU/h) 24hr.supply Heating Capacity: 86,000 to 115,000 BTU/h Net I=B=R Rating: 75,000 to 100,000 BTU/h AFUE: Up to 87% Voltage: 120V, 1 Phase Dimensions: Height: 35.62", Width: 20.25", Depth: 13.75" unitedsupplyusa.com +6 24hr.supply +6 afsupply.com +6 Venting: Chimney vent with rear flue outlet; top flue option available with kit generalplumbingsupply.net +5 williamson-thermoflo.com +5 24hr.supply +5 Burner: Sold separately; compatible with Beckett, Carlin, and Riello burners orders.sidharvey.com +2 sidharvey.com +2 williamson-thermoflo.com +2 Installation Considerations The OWB-3-T-S3-W is factory-assembled and tested, facilitating straightforward installation. It is recommended that a licensed HVAC professional install the unit to ensure compliance with local codes and optimal performance. afsupply.com +1 afsupply.com +1 Warranty Heat Exchanger: Limited lifetime warranty unitedsupplyusa.com +11 afsupply.com +11 afsupply.com +11 Parts: 3-year limited warranty sidharvey.com +1 24hr.supply +1