Lochinvar Knight XL KBN801 Boiler Instruction Manual
Lochinvar Knight XL KBN801 Boiler
Lochinvar Knight XL KBN801 Boiler
Lochinvar Knight XL KBN801 Boiler
Lochinvar Knight XL KBN801 Boiler
Lochinvar Knight XL KBN801 Instructions
Here we offer the Lochinvar Knight XL KBN801 Boiler manual completely free and in English. We have cataloged this manual in the Boilers section on Manualverse, and it has been rated by 1 users with an average rating of 5. If you have any specific questions about Lochinvar Knight XL KBN801 Boiler, we suggest checking the Frequently Asked Questions (FAQs) section of this manual.
Product Images
Lochinvar Knight XL KBN801 Boiler Specifications
| Specification | Value (KBN801) |
|---|---|
| Model Number | KBN801 |
| Input MBH Gross | 800 |
| AHRI Output MBH | 752 |
| Net AHRI Ratings Water, MBH | 654 |
| Water Content | 5.7 Gallons |
| Water Connections | 2 inches |
| Gas Connections | 1 inch |
| Air Inlet Size | 4 inches |
| Vent Size | 6 inches |
| Maximum Allowed Working Pressure | 50 PSI |
| Electrical Supply | 120 VAC |
| Natural Gas Supply Pressure (Min.) | 4 inches w.c. |
| Natural Gas Supply Pressure (Max.) | 14 inches w.c. |
| Propane Gas Supply Pressure (Min.) | 8 inches w.c. |
| Propane Gas Supply Pressure (Max.) | 14 inches w.c. |
| Maximum Flue Temperature (Shutdown) | 225°F (107°C) |
| Maximum Outlet Temperature (Shutdown) | 195°F (90°C) |
| Maximum Delta T (Outlet - Inlet) | 60°F (15°C) |
| Minimum Inlet Water Temp (Burner Fire) | 37°F (2.8°C) |
Lochinvar Knight XL KBN801 Boiler Details
At the core of the Lochinvar Knight XL KBN801 is its advanced stainless steel heat exchanger, meticulously designed to maximize heat transfer efficiency while offering robust protection against flue gas corrosion. This critical component is encased within a specialized jacket, containing the entire combustion process for optimal performance and safety. Its construction ensures longevity and reliable heating.
The KBN801 employs an integrated blower and gas valve system. The blower actively pulls in the precise mixture of air and gas via a venturi, then pushes this blend into the burner. The gas valve intelligently senses negative pressure, ensuring gas flows only when the system is powered and sufficient combustion air is present, enhancing safety and efficiency.
Central to the boiler's operation is the SMART SYSTEM Control Module, an intelligent electronic brain that receives inputs from various sensors and external devices. It precisely activates and controls the blower, gas valve, and pumps, modulating heat input to meet specific demands. Users interact with this system via an intuitive electronic LCD display, featuring a navigation dial and two select keys for setting temperatures and monitoring operational status.
The boiler incorporates multiple temperature sensors, including those for the boiler outlet (system supply), boiler inlet (system return), and flue gas. These sensors allow the control module to precisely adjust the boiler's firing rate, ensuring optimal heating and efficiency. Crucially, an over-temp switch protects the rear of the heat exchanger (604°F/318°C), and a dedicated burner door temperature switch guards the combustion chamber cover (500°F/260°C), preventing damage from excessive heat.
Efficient condensate management is vital for this high-efficiency appliance, which produces slightly acidic condensate (pH 3-5). It features a dedicated drain connection and trap, with an optional neutralizer kit available to meet local code requirements for pH balancing. Reliable ignition is assured through a direct spark ignition electrode and a robust flame sensor, providing quick and consistent burner activation.
For enhanced versatility, the KBN801 supports three individual space heating set points (SH1, SH2, SH3), enabling precise zone control. It also accommodates domestic hot water (DHW) production in either Normal or Zone mode and can be integrated into a cascade operation for controlling up to eight boilers. This adaptability makes it suitable for diverse and demanding heating applications.
The KBN801 features advanced system protection and diagnostics. It offers outdoor air reset for energy efficiency, a "Boost" function for sustained heat demand, and "Night Setback" for programmable temperature reductions. Ramp delay, gradient limiting, anti-cycling, and comprehensive freeze protection ensure smooth, safe operation. The unit also logs errors, tracks run hours and cycles, and provides a service reminder, with seamless integration capabilities for Building Management Systems (BMS) via 0-10V or ModBus/BACnet.
Frequently Asked Questions (FAQs)
Can't find the answer you need? Here are some frequently asked questions about the Lochinvar Knight XL KBN801 Boiler, and we answer them below.
