Lochinvar WBN051 Lochinvar Knight Stainless Steel Natural Gas Boiler, 51000 BTU, Wall-Mount, 1/2in Gas Connection, 1in Water Connection, 2in Air inlet, 2in Vent, SMART SYSTEM Digital Operating Control, Freeze Protection, Dual Level Password Security, Night Setback - WBN051
View 2 of Lochinvar WBN051 Lochinvar Knight Stainless Steel Natural Gas Boiler, 51000 BTU, Wall-Mount, 1/2in Gas Connection, 1in Water Connection, 2in Air inlet, 2in Vent, SMART SYSTEM Digital Operating Control, Freeze Protection, Dual Level Password Security, Night Setback - WBN051
View 3 of Lochinvar WBN051 Lochinvar Knight Stainless Steel Natural Gas Boiler, 51000 BTU, Wall-Mount, 1/2in Gas Connection, 1in Water Connection, 2in Air inlet, 2in Vent, SMART SYSTEM Digital Operating Control, Freeze Protection, Dual Level Password Security, Night Setback - WBN051
View 4 of Lochinvar WBN051 Lochinvar Knight Stainless Steel Natural Gas Boiler, 51000 BTU, Wall-Mount, 1/2in Gas Connection, 1in Water Connection, 2in Air inlet, 2in Vent, SMART SYSTEM Digital Operating Control, Freeze Protection, Dual Level Password Security, Night Setback - WBN051

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Lochinvar Knight Stainless Steel Natural Gas Boiler, 51000 BTU, Wall-Mount, 1/2in Gas Connection, 1in Water Connection, 2in Air inlet, 2in Vent, SMART SYSTEM Digital Operating Control, Freeze Protection, Dual Level Password Security, Night Setback - WBN051

SKU: 34435
$ 2,975.38 / ea
Cargo Shipping Only
Save 23% · Retail: $3,868.00

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About the Lochinvar Knight Stainless Steel Natural Gas Boiler, 51000 BTU, Wall-Mount, 1/2in Gas Connection, 1in Water Connection, 2in Air inlet, 2in Vent, SMART SYSTEM Digital Operating Control, Freeze Protection, Dual Level Password Security, Night Setback - WBN051

Lochinvar Knight WBN051 51000 BTU High Efficiency Wall Mount Natural Gas Boiler. The Lochinvar Knight 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 99% 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. For higher-demand applications, the Eight KNIGHT Wall Mount units can be installed utilizing the built-in cascading sequencer to deliver up to 3.2 million Btu/hr heating capacity.


** 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.

Manufacturer: Lochinvar
Product: Boiler
Modus Operandi: Natural Gas
Color: Stainless Steel
Mount Type: Wall Mount
BTU Rate: 51,000 BTU
Electrical Voltage: 120VAC, 60Hz
Vent Size: 2"
Type: Direct Vent
Connection Size: 1/2"
Connection Type: NPT
Water Connection: 1" NPT
Energy Star Rated: Yes
Other Info: Freeze Protection
  Password Securable
  ASME Certified
Mpn # WBN051
Shipping Dimensions 16.0" x 19.0" x 30.0"
Weight 130.00 lbs.
  • Modulating Burner with 5:1 Turndown
  • 2 line, 16 Character Display
  • Dual Level Password Security
  • Domestic Hot Water Prioritization
  • Built In Cascading Sequencer For Up To 8 Boilers
  • 0-10 VDC Input Control
  • Outdoor Reset Control With Outdoor Air Sensor
  • Low Water Flow Safety Control & Indication
  • Alarm On Any Failure Contacts
  • Service Reminder
  • Freeze Protection
  • Vertical and Horizontal Direct Vent
  • Night Setback
  • Time Clock
  • Three Pump Control (System, Boiler & DHWP)
  • Data Logging (Ex: Hours Running, Space Heating)
  • Programmable System Efficiency Optimizers (Ex: Anti-cycling, Ramp Delay)
  • ASME Stainless Steel Heat Exchanger
  • Automatic Reset High Limit
  • Inlet & Outlet Temperature Sensors
  • Boiler Circulating Pump
  • 30 psi ASME Relief Valve
  • Zero Clearances to Combustible Material
  • SMART SYSTEM Digital Operating Control

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