Lochinvar KBN400 Lochinvar Knight XL KBN400 400000 BTU High Efficiency Natural Gas Boiler

Lochinvar Knight XL KBN400 400000 BTU High Efficiency Natural Gas Boiler

SKU: 102761

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About the Lochinvar Knight XL KBN400 400000 BTU High Efficiency Natural Gas Boiler

Lochinvar Knight XL KBN400 400000 BTU High Efficiency Natural Gas Boiler. The Lochinvar Knight XL Series Boilers are the smartest choice for a condensing performance boilers. Engineered with Lochinvars exclusive SMART SYSTEM Control (LCD Display Screen, and the ability to control up to three temperature set-points) and a vast variety of other innovative features. Knight Boilers promise to deliver ease of installation and maintenance. With up to 94.6% efficiency, low emissions and a fully modulating burner, these are the best Green Choice for todays conscious market. All boilers are equipped for direct-vent installation with air intake and exhaust runs up to 100 feet. This range of choices is ideal for residential or light-duty applications such as small hotels, schools and office buildings. Included with Lochinvar's Knight XL Boiler Series, is a 399,000-800,000 BTU/hr, and a fully modulating burner with 5:1 turndown. You can find optional equipment kits for your Knight Boilers also.


** Due to the Considerable weight and size of this product combined with fluctuating shipping rates, the online calculations for shipping costs may be inflated. It is recommended that customers call our support staff to find the current shipping rates before purchase.

Product: Boiler
Manufacturer: Lochinvar
Modus Operandi: Natural Gas
Other Info: Freeze Protection
  Password Securable
Mpn # KBN400
Shipping Dimensions 1.0" x 16.0" x 43.0"
Weight 285.00 lbs.
  • Modulating Burner With 5:1 Turndown
  • Low Gas Pressure Operation
  • Zero Clearances to Combustibles
  • Easy Access Terminal Strip
  • Natural to LP Conversion Kit
  • Inlet & Outlet Temperature Sensors
  • Low Water Flow Indication
  • Domestic Hot Water Prioritization
  • Adjustable Leveling Legs
  • Sidewall Vent Terminals
  • On/Off Switch
  • ASME Stainless Steel Heat Exchanger
  • Contact On Any Failure
  • SMART SYSTEM Digital Operating Control
  • 2 line, 16 Character LCD Display
  • Password Security
  • Built In Cascading Sequencer
  • Building Management System Control
  • 0-10 VDC Input Control
  • Outdoor Reset
  • Night Setback
  • Three Pump Control (System, Boiler & DHW)
  • Direct-Vent Sealed Combustion
  • Pump Relay With Freeze Protection
  • Product Service Indicator
  • Field Connection Versatility
  • Optional PC Or Pocket PC Software
  • Floor Standing
  • Gallon Capacity: 3.4
  • Heating Surface (Sq.Ft.): 41.8
  • Water Connections: 1-1/2"
  • Drain: 3/4"
  • Max Working Pressure: 160 psi
  • 50 psi Relief Valve
  • Number of Relief Valves: 1
  • Relief Valve Size: 3/4"
  • Relief Valve Pressure Rating: 50 psi
  • Gas Inlet Connection: 1"
  • BTU/Hr Input: 399,000
  • BTU/Hr Output (High Fire): 372,267
  • BTU/Hr Output (Low Fire): 74,453
  • Voltage/Heater: 120 V
  • Voltage/Control: 24 V
  • Total Amps: 1.5 A
  • Adjustable High Limit With Manual Reset
  • Number of Electrical Connections: 1
  • Dimensions (H x W x D): 42-1/2" x 15-1/2" x 27"
  • Vent Size: 4"
  • Vent Category: IV
  • Vent Material: PVC
  • Shipping Weight: 285 lb
  • Flow Switch
  • Temperature & Pressure Gauge
  • Direct-Spark Ignition
  • Low NOx Operation

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