Velocity Boiler Works 41100b Cast Iron Residential Oil-fired Hot Water Boiler 123 Mbh 1-1/2 Inches Fpt Supply 6 Inches Vent 50 Psi

Product Description

The Velocity Boiler Works 41100b is a cast iron residential oil-fired hot water boiler built for reliable, efficient home heating. Manufactured by Crown Boiler Co. under the Velocity Boiler Works brand, this unit delivers a DOE Heating Capacity of 123 MBH and an Input Rating of 140 MBH, making it well-suited for medium to larger residential heating loads. The 41100b carries an AFUE Rating of 87 percent, meaning it converts a strong majority of fuel into usable heat, helping homeowners reduce energy consumption over the long term. The cast iron heat exchanger is built to last and is backed by a lifetime warranty, giving HVAC contractors and homeowners confidence in long-term performance. The supply connection is 1-1/2 inches female threaded and the return connection is 1-1/2 inches, making integration with standard residential hydronic piping systems straightforward. The boiler holds 11.08 gallons of water and has a pressure rating of 50 PSI for the water circuit. A 30 PSI ASME relief valve is supplied with the unit. Vent size is 6 inches, and chimney requirements are a 7 inch diameter round flue at 15 feet height, or an 8 inch by 8 inch rectangular flue at 15 feet height. The burner is compatible with Beckett, Carlin, and Riello oil burners, giving installers flexibility in burner selection. GPH recovery is rated at 8 GPM at 35 degrees F and 12.3 GPM at 20 degrees F. Overall boiler dimensions are 20-3/4 inches wide, 22-1/4 inches deep, and 31-1/2 inches tall. The unit meets AHRI, ASME, ANSI/NFPA 31/70, CAN/CSA B139, and CSA C22.1 standards. A 120 Volt Low Water Cutoff Kit is available as an option. The Net IBR Rating is 107 MBH and the Net IBR Steam Area Rating is 20.29 square feet. This boiler is a trusted choice for licensed HVAC technicians and heating contractors replacing or installing oil-fired hydronic systems in residential applications.

• Cast iron construction with a lifetime heat exchanger warranty for long-term durability
• 87 percent AFUE rating for strong residential heating efficiency in oil-fired systems
• Compatible with Beckett, Carlin, and Riello oil burners for flexible installation options

Product Highlights

The Velocity Boiler Works 41100b delivers 123 MBH DOE heating capacity with a cast iron build and 87 percent AFUE rating, backed by a lifetime heat exchanger warranty. It is a dependable choice for residential oil-fired hot water heating installations.

Product Information

Standard Information

• Brand: VELOCITY BOILER WORKS
• Manufacturer Part Number: 41100b

Technical Specifications

• Type: Hot Water
• Boiler Material: Cast Iron
• DOE Heating Capacity: 123 MBH
• Input Rating: 140 MBH
• Net IBR Rating: 107 MBH
• Net IBR Steam Area Rating: 20.29 Square Foot
• AFUE Rating: 87 Percent
• Pressure Rating: 50 PSI (Water)
• Supply Connection: 1-1/2 Inch Female Threaded
• Return Connection: 1-1/2 Inch
• Vent Size: 6 Inch
• Water Content: 11.08 Gallon
• Burner Type: Beckett/Carlin/Riello
• Relief Valve Details: 30 PSI ASME Relief Valve Supplied
• GPH Recovery: 8 GPM at 35 Deg F, 12.3 GPM at 20 Deg F
• Boiler Dimensions: 20-3/4 Inch Width x 22-1/4 Inch Depth x 31-1/2 Inch Height
• Chimney Size: 7 Inch Diameter x 15 Foot Height (Round), 8 Inch x 8 Inch x 15 Foot Height (Rectangle)
• Warranty: Lifetime (Heat Exchanger)
• Options: 120 Volt Low Water Cutoff Kit
• Applicable Standard: AHRI, ASME, ANSI/NFPA 31/70, CAN/CSA B139, CSA C22.1