Lochinvar 100136768 Copper-fin Cbn Series Lightweight Natural Gas Boiler 315000 Btu/hr 2 Inch Npt Electronic Ignition

Product Description

The Lochinvar 100136768 is a Copper-Fin CBN Series lightweight natural gas-fired boiler built for commercial and residential heating applications where space, efficiency, and ease of service matter. This boiler delivers 315000 Btu/hr of input capacity and a DOE heating capacity of 258000 Btu/hr, making it a dependable choice for HVAC contractors and mechanical installers who need reliable, high-output hydronic heating in a compact footprint. The unit measures 32.25 inches wide, 21.5 inches deep, and 29.5 inches tall, keeping the overall footprint manageable even in tight mechanical rooms. Water connection is made through a 2 inch NPT fitting, which is a standard size that simplifies integration into existing hydronic systems. Ignition is handled by a two-stage electronic control system, eliminating the need for a standing pilot and improving startup reliability. The copper tube heat exchanger is a central feature of this boiler. Copper transfers heat efficiently and holds up well in hot water applications. The exchanger design keeps heat losses low and helps the unit maintain strong seasonal efficiency. A built-in draft hood is included, which simplifies venting during installation and reduces the number of additional components a technician needs to source separately. The boiler is approved for installation on combustible floors, giving installers more flexibility in placement. Operating voltage is 24 V, which is standard for residential and light commercial HVAC controls. This boiler is part of the Copper-Fin CBN line, which spans inputs from 315000 to 500000 Btu/hr, so contractors familiar with this series can apply the same service knowledge across multiple installations. Its lightweight construction reduces physical strain during installation and makes repositioning easier on the job site. Whether replacing an aging cast iron boiler or installing new, this unit gives HVAC professionals a straightforward, serviceable option for natural gas hydronic heating.

• 315000 Btu/hr input capacity with 258000 Btu/hr DOE heating output for high-demand hydronic heating systems
• Copper tube heat exchanger provides efficient heat transfer and long-term durability in hot water boiler applications
• Built-in draft hood, combustible floor approval, and 2 inch NPT water connection simplify installation and reduce extra components

Product Highlights

The Lochinvar 100136768 Copper-Fin CBN Series boiler combines a high-efficiency copper heat exchanger with a lightweight, installer-friendly design and two-stage electronic ignition, making it a practical choice for natural gas hydronic heating installations.

Product Information

Standard Information

• Brand: LOCHINVAR
• Manufacturer Part Number: 100136768

Technical Specifications

• Series: CBN
• Type: Lightweight
• Fuel Type: Natural Gas
• Input Capacity: 315000 Btu/hr
• DOE Heating Capacity: 258000 Btu/hr
• Ignition Type: Electronic
• Connection Type: 2 inch NPT Water
• Voltage Rating: 24 V
• Dimensions: 32.25 inches W x 21.5 inches D x 29.5 inches H