Navien NCB-190/060H 160/60MBTU High Efficiency Condensing Combi-Boiler

In stock

NCB-190/060H premium features and benefits:


  • A dual Venturi system creates better combustion control and turndown ratio and easy field gas conversions.
  • Durable dual-condensing stainless steel heat exchangers recover extra heat for maximum efficiency
  • Advanced user interface with Setup Wizard is made easy with the backlit panel, click-wheel control, and intuitive text.
  • Easily accessible built-in DHW module includes integrated boiler pump, flow adjustment valve, DHW stainless steel heat exchanger, mixing valve, and 3-way valve.
  • Smart controls LCD display, quick dial wheel & Setup Wizard
  • Advanced stainless steel dual heat exchangers
  • 15:1 DHW and up to 5.5:1 heating TDR
  • Field convertible gas system (NG/LP) up to 10,100 ft.
  • Capable of cascading up to 15 NPE water heaters
  • Capable of common venting up to 7 NPE water heaters
  • Built-in 3 zone pumps and 3 zone valves powered connections
  • 2” venting up to 65′ and 3” venting up to 150′
  • PLEASE NOTE: In order to purchase this product, we would need assurance this product will be installed by a Licensed Technician for safety purposes. Details would be required before shipping to make sure the Technician/Company is registered to install this Product. Thanks for your cooperation.


Contact Us for Price at 289-999-2334 or



Dimensions17.3″ W x 29.3″ H x 12.8″ D (43.9cm W x 74.4cm H x 32.5cm D)
Boiler weight87 lbs (39.5 kg)
Boiler Weight With Water93 lbs (42.2 kg)
Installation typeIndoor wall-hung
Venting typeForced draft direct vent
IgnitionElectronic ignition
Natural gas supply pressure (from source)3.5 ” WC to 10.5 ” WC
Propane gas supply pressure (from source)8 ” WC to 13.5 ” WC
Natural gas manifold pressure (min-max)-0.01 ” WC to -0.31 ” WC
Propane gas manifold pressure (min-max)-0.04 ” WC to -0.33 ” WC
Connection sizesGas inlet
Power supplyMain supply120V AC, 60Hz
Maximum power consumptionUp to 15 amperes
MaterialsCasingCold-rolled carbon steel
Heat exchangerstainless steel
VentingExhaust2″ or 3″ PVC, CPVC, approved polypropylene 2″ or 3″ special gas vent type BH (Class III, A/B/C) 2″ or 3″ stainless steel
Intake2″ or 3″ PVC, CPVC, polypropylene 2″ or 3″ special gas vent type BH (Class III, A/B/C) 2″ or 3″ stainless steel
Vent clearances0″ to combustibles
Safety DevicesFlame Rod, APS, Ignition operation detector, water temperature high limit switch, exhaust temperature high limit sensor, water pressure sensor, burner
Temperature setting range86 – 140 °F (30 – 60 °C) (up to 0 °F ( °C) when setting the parameter)
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