Lochinvar Knight XL High Efficiency Commercial Boilers
The Lochinvar Difference: No One Brings It All Together Like Lochinvar
Introduction
For nearly 80 years, Lochinvar has been a leader in innovation and high-efficiency water heating. The company has continually improved its products, offering the broadest line of high-efficiency water heating solutions, a world-class research and development department, comprehensive service, and industry-leading training through Lochinvar University.
Knight XL Features
The Lochinvar Knight XL is a commercial boiler known for its reliability and performance. It features a 7" touchscreen with built-in Con-X-US remote connect for easy adjustment of parameters and remote access. The boiler boasts a stainless steel water tube heat exchanger, providing a 3% increase in thermal efficiency over previous designs, leading to lower operating costs and emissions. It offers a 10:1 modulation turndown, allowing it to operate efficiently across a wide range of heating loads, from 999,000 BTU/HR down to 99,000 BTU/HR, minimizing short cycling. A combustion air filter collects debris from makeup air, potentially extending the time between burner and heat exchanger cleanings.
Key Features:
- 7" Touch Screen with built-in Con-X-US Remote Connect
- Stainless Steel Water Tube Heat Exchanger
- 10:1 Modulation Turndown
- Combustion Air Filter
Product Timeline
The Knight XL has evolved over the years:
- 2005: KBN399 & KBN500 Introduced.
- 2007: Knight XL Family Introduction. Added KBN600, KBN700 & KBN800.
- 2010: Enhanced User Interface and Control Features Added.
- 2015: Con-X-US Remote Connectivity Option Added.
- 2021: The new refined Knight XL is released.
Specifications
The Knight XL is available in five models with capacities ranging from 399,000 to 999,000 BTU/HR, all featuring 97% thermal efficiency and a 10:1 turndown ratio. The boilers offer up to 150' equivalent vent lengths and zero side clearances for flexible installation. The Smart System™ control and Con-X-US remote connect allow for easy setup and remote adjustments.
| Model Number | Input MBH (Min-Max) | Thermal Efficiency | Gross Output MBH | Net AHRI Output MBH | Dimensions (H x W x D) | Gas Conn. | Water Conn. | Air Inlet | Vent Size | Weight (lbs.) |
|---|---|---|---|---|---|---|---|---|---|---|
| KBX0400N | 399,000 - 39,900 | 97% | 387 | 337 | 33-1/2" x 42-1/2" x 29-3/4" | 1" | 2" | 4" | 4" | 365 |
| KBX0500N | 500,000 - 50,000 | 97% | 485 | 422 | 33-1/2" x 42-1/2" x 29-3/4" | 1" | 2" | 4" | 4" | 377 |
| KBX0650N | 650,000 - 65,000 | 97% | 631 | 549 | 42-1/2" x 53" x 30-1/2" | 1-1/4" | 2" | 4" | 6" | 456 |
| KBX0800N | 800,000 - 80,000 | 97% | 776 | 675 | 42-1/2" x 53" x 30-1/2" | 1-1/4" | 2" | 4" | 6" | 484 |
| KBX1000N | 999,000 - 99,900 | 97% | 969 | 843 | 50" x 62" x 30-1/2" | 1-1/4" | 2-1/2" | 6" | 6" | 567 |
Note: Change 'N' to 'L' for LP Gas models. Performance data is based on manufacturer test results.
Smart System Features
- CON-X-US Remote Connect
- Smart Touch Touchscreen Operating Control
- Full Color 7" Touchscreen LCD Display
- Loch-N-Link USB Thumb Drive Port for Easy Programming
- Cascading Sequencer with Built-in Redundancy
- Multiple Size Boilers
- 3 Reset Temperatures Inputs w/Independent Outdoor Reset Curves for Each
- Three-Pump Control
- Building Management System Integration (0-10 VDC inputs/outputs)
- Programmable System Efficiency Optimizers
- Space Heating Night Setback
- DHW Night Setback
- Anti-Cycling
- Ramp Delay
- Boost Time and Temperature
- High-Voltage Terminal Strip
- Low-Voltage Terminal Strip
- ModBus/BACnet Contacts
- Time Clock
- Data Logging
- Customizable Freeze Protection Parameters
Optional Equipment
- Wireless Outdoor Temperature Sensor
- Multi-Temperature Loop Control
- Variable-Speed Boiler Circulator
- Constant-Speed Boiler Circulator
- Common Vent Damper Kit
- ModBus Communication
- BMS Gateway to BACnet or LonWorks
- BACnet MSTP
- Alarm Bell
- Condensate Neutralization Kit
- Concentric Vent Kit
- Low Water Cutoff w/Manual Reset & Test
- High and Low Gas Pressure Switches w/Manual Reset
- Firing Controls
Contact Information
Lochinvar, LLC
300 Maddox Simpson Parkway
Lebanon, Tennessee 37090
P: 615.889.8900 / F: 615.547.1000
Lochinvar.com
For technical information call 800-722-2101. Lochinvar, LLC reserves the right to make product changes or improvements without prior notice.
