Lochinvar Noble® Stainless Steel Fire Tube Combi Boiler, Space Heat and Tanklees DHW, 1" Heating and 3/4" DHW Supply/Return, 11-110 MBH, 95% AFUE, Natural Gas,Wall Mount, Induced Draft/Direct Vent

  • Brand: Lochinvar®
  • Type: High Efficiency, Hot Water
  • Applicable Standard: AHRI, ASME H, CSA
  • Gas Type: Natural
  • Gas Connection: 1/2 Inch
  • Mounting Type: Wall Mount
  • Pressure Rating: 150 psi
  • DOE Heating Capacity: 102 MBH
  • AGA Input Rating: 11 to 110 MBH
  • AFUE Rating: 95 Percent
  • Air Inlet Connection: 3 Inch
  • Boiler Dimensions: 17-1/4 Inch Width x 18 Inch Depth x 32-1/2 Inch Height
  • Burner Type: Low Nox, Modulating
  • GPH Recovery: 4.5 GPM at 45 Deg F
  • Ignition Type: Direct Spark
  • Inclusions/Features: Adjustable High Limit with Manual Reset, ASME Stainless Steel Heat Exchanger, Automatic Reset High Limit, Built-in Circulating Pump, Zero Clearances to Combustible Materials
  • Options: Concentric Vent Kit, Condensate Neutralization Kit, Floor Stand, Isolation/Flush Valves, Low-Water Cutoff with Manual Reset and Test, Primary-Secondary Kit, Sidewall Vent Termination, Wireless Outdoor Sensor
  • Relief Valve Details: 50 PSI ASME 3/4 Inch Relief Valve, 535 MBH
  • Return Connection: 1 Inch Threaded
  • Supply Connection: 1 Inch Threaded
  • Vent Size: 3 Inch
  • Venting Type: Vertical and Horizontal Direct Vent
  • Warranty: 10 Year Limited
The NOBLE™ combi boiler provides a space-saving choice for builders and specifiers, lowering installation costs by reducing the mechanical equipment needed to provide rapid, reliable hot water supply and efficient space heating. It also gives plumbing contractors a money-saving alternative for single family housing with 1 or 2 bathrooms. DELIVERS MORE HOT WATER: It’s sized large enough to quickly meet domestic hot water (DHW) load. Provides DHW from 2.6 (NKC110) to 4.8 gpm (NKC199) at a 77°F temperature rise. QUIET OPERATION: Operates so silently that you often have to look at the user-friendly interface to see if it’s running. EASIER TO INSTALL AND PROGRAM: With our Set-Up Wizard, you can program the boiler in less than two minutes. The user-friendly interface uses real words—not confusing codes—to guide the installer in setting up vital system parameters. BETTER TECHNICAL SUPPORT AND TRAINING: Answers are accessible whether online or on-campus. LochinvarU.com is always on, 24/7 for technical support. And Lochinvar University is the industry’s best-equipped training center. 10:1 TURNDOWN RATIO: Operates as low as 10% of the maximum firing rate, preventing on/off short cycling at the lowest DHW demands or small heating demands. AIR HANDLER INTERLOCK: Prevents cool air circulation in Hydro-Air installations when the appliance is making DHW. CONSUMER FINANCING AVAILABLE: Check with your local Sales Representative for additional information.
  • Features
  • Features and More
  • SMART CONTROL™ Enhanced Operating System
  • Three Sizes 110,000, 150,000 and 199,999 Btu/Hr
  • 95% AFUE Efficiency
  • Industry-Leading DHW Delivery Up to 4.8 GPM
  • True Instantaneous Response
  • Easy Installation and Serviceability
  • User-Friendly Interface
  • Designed, Engineered and Assembled in the USA


  • Smart Control Digital Operating Control-LCD Display with Words not Codes
  • Outdoor Reset Control with Outdoor Air Sensor
  • Programmable System Efficiency Optimizers
  • Two Pump Control
  • High-Voltage Junction Box
  • Low Voltage Terminal Strip
  • Time Clock for Data Logging-Last 10 Lockouts
  • Low-Water Flow Safety Control and Indication
  • Password Security
  • Built-In Cascading Sequencer for up to 8 Units
  • Modulating Burner with 10:1 Turndown
  • Condensate Trap
  • Adapter-Free Flue Connection
  • Direct Venting up to 100 Foot
  • Advanced Negative Regulation Technology
  • Innovative Fire-Tube Heat Exchanger
  • Brazed Plate Heat Exchanger
  • Water Connections for Easy Installation
  • Energy Star® Rated
  • Lead-Free
  • Made in USA


    Automatic Reset High Limit, Adjustable High Limit with Manual Reset, Built-in Circulating Pump, Zero Clearances to Combustible Materials, ASME Stainless Steel Heat Exchanger