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The NPE-A2

 

2" PVC venting up to 75 feet 2"
Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs.Vent Installation Detector (VID) for added safety.


Dual Venturi for field gas conversions. Dual Venturi system creates better combustion control and turndown ratio.


ComfortFlow® NPE-A2 built-in recirculation system
The patented ComfortFlow® system is the first to include a buffer tank, recirculation pump and fine-tuned controls into a tankless water heater.


Dual stainless steel heat exchangers for added durability.

 

EZNav™ Multi-line control with built-in intuitive software.


1/2" gas pipe capability up to 24' (subject to local codes). Cuts installation time, no need to install new gas lines for retrofit applications.

The NPE-S2

 

2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs.Vent Installation Detector (VID) for added safety.


Dual Venturi for field gas conversions. Dual Venturi system creates better combustion control and turndown ratio.


Dual stainless steel heat exchangers for added durability.


Dual stainless steel heat exchangers for added durability.


EZNav™ Multi-line control with built-in intuitive software.

 

1/2" gas pipe capability up to 24' (subject to local codes). Cuts installation time, no need to install new gas lines for retrofit applications.

The NPN-U


Exclusive stainless steel heat exchanger. The NPN series is the first and only non condensing tankless water heater with a stainless steel heat exchanger to deliver unmatched durability and performance.


NPN - Universal integrated control panel allows you to adjust water temperature, operation status and troubleshooting.


Built-in Air Pressure Sensor (APS) monitors the vent system for blockage, automatically compensates for the range of vent lengths, helps maintain proper air/gas ratio during operation, and ensures consistent Domestic Hot Water output during changing conditions.


Patented NaviTech™ stainless steel burner. Designed and manufactured by Navien to burn gas at higher efficiency than other system on the market.


Recirculation control built into circuit board. Ensures proper system setup, and reduces the need for additional components, saving installation time and cost.


Built-in Water Adjustment Valve (WAV) and Mixing Valve control flow to maintain setpoint, and stabilize water temperature during flow changes

The NPN-E


Exclusive NaviTech™ stainless steel heat exchanger. The NPN series is the first and only non condensing tankless water heater with a stainless steel heat exchanger to deliver unmatched durability and performance.


NPN - Exterior control panel allows you to adjust water temperature, operation status and troubleshooting.


Built-in Air Pressure Sensor (APS) monitors the vent system for blockage, automatically compensates for the range of vent lengths, helps maintain proper air/gas ratio during operation, and ensures consistent Domestic Hot Water output during changing conditions.


Patented NaviTech™ stainless steel burner. Designed and manufactured by Navien to burn gas at higher efficiency than other system on the market.


Recirculation control built into circuit board. Ensures proper system setup, and reduces the need for additional components, saving installation time and cost.


Built-in Water Adjustment Valve (WAV) and Mixing Valve control flow to maintain setpoint, and stabilize water temperature during flow changes.

The NPN-E (120)


Exclusive NaviTech™ stainless steel heat exchanger. The NPN series is the first and only non condensing tankless water heater with a stainless steel heat exchanger to deliver unmatched durability and performance.


NPN - Exterior control panel allows you to adjust water temperature, operation status and troubleshooting.


Built-in Air Pressure Sensor (APS) monitors the vent system for blockage, automatically compensates for the range of vent lengths, helps maintain proper air/gas ratio during operation, and ensures consistent Domestic Hot Water output during changing conditions.


Patented NaviTech™ stainless steel burner. Designed and manufactured by Navien to burn gas at higher efficiency than other system on the market.


Recirculation control built into circuit board. Ensures proper system setup, and reduces the need for additional components, saving installation time and cost.


Built-in Water Adjustment Valve (WAV) and Mixing Valve control flow to maintain setpoint, and stabilize water temperature during flow changes.

The NCB-H


2" PVC venting up to 65 feet including economical schedule 40 PVC.Vent Installation Detector (VID) for added safety.


Dual Venturi systecreates 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 backlit panel, click-wheel control and intuitive text.


1/2" gas pipe capability up to 24' (subject to local codes). Cuts installation time, no need to install new gas lines for retrofit applications.


Easily accessible built-in DHW module includes integrated boiler pump, flow adjustment valve, DHW stainless steel heat exchanger, mixing valve and 3-way valve.

The NFC-H


2" venting up to 65' (including schedule 40 PVC). Vent Installation Detector (VID) for added safety.


Dual Venturi system creates better combustion control, turndown ratio and easy field gas conversions.


Patented stainless steel fire tube heat exchanger Navien’s innovative heat exchanger design is ASME‑Certified,“H” Stamped, and reduces high-stress point weld failures common on other combi-boilers.


Advanced user interface with Setup Wizard is made easy with backlit panel, click-wheel control and intuitive text.


Advanced user interface with Setup Wizard is made easy with backlit panel, click-wheel control and intuitive text.


Advanced circuitry with built-in control for 3-zone pumps or 3-zone valves.


Easily accessible built-in DHW module includes integrated boiler pump, flow adjustment valve, DHW stainless steel heat exchanger, mixing valve and 3-way valve.

 

1/2" gas pipe capability up to 24' (subject to local codes). Cuts installation time, no need to install new gas lines for retrofit applications.

The NFB-H


2" venting up to 65';
3” up to 150’ (including schedule 40 PVC).Vent Installation Detector (VID) for added safety.


Dual Venturi system creates better combustion control, turndown ratio and easy field gas conversions.


Patented stainless steel fire tube heat exchanger Navien’s innovative heat exchanger design is ASME‑Certified,“H” Stamped, and reduces high-stress point weld failures common on other combi-boilers.


Low gas pressure operation. Negative pressure regulating gas valve ensures maximum performance all the way down to 3.5" of water column on natural gas and 8" of water column on propane gas.


Low gas pressure operation. Negative pressure regulating gas valve ensures maximum performance all the way down to 3.5" of water column on natural gas and 8" of water column on propane gas.


Advanced user interface with Setup Wizard is made easy with backlit panel, click-wheel control and intuitive text.


Built-in control for a boiler pump, 3 zone pumps or 3 zone valves

 

1/2" gas pipe capability up to 24' (subject to local codes). Cuts installation time, no need to install new gas lines for retrofit applications.

The NFB-C

 

Multiple venting options. Low exhaust gas temperatures allow use of PVC, CPVC, polypropylene (rigid and flexible) and stainless-steel venting reducing installation time and costs.


Patented stainless steel fire tube heat exchanger Navien’s innovative heat exchanger design is ASME‑Certified,“H” Stamped, and reduces high-stress point weld failures common on other combi-boilers.


Dual Venturi and field gas convertibility. Dual Venturi system creates better combustion control and turndown ratio. Orifice for easy field gas convertibility from NG to LP. Conversion kits included.


Top and bottom piping
Easy pipe connections for floor or wall-hung installations.


Top and bottom piping
Easy pipe connections for floor or wall-hung installations.


Low gas pressure operation. Negative pressure regulating gas valve ensures maximum performance all the way down to 3.5" of water column on natural gas and 8" of water column on propane gas.

 

Built-in hardware connects boiler pump & 3 zone pumps. All integrated into the NFB-C circuit board. Also includes a DHW priority zone


Advanced 7" touch screen controls Easy intuitive navigation for setup, troubleshooting and operation.Built-in USB port
Download boiler data and settings. Upload software updates and boiler settings.

The NHB

 

2" venting up to 65';
3” up to 150’ (including schedule 40 PVC).Vent Installation Detector (VID) for added safety.


The condensing technology of the dual stainless steel heat exchangers saves energy, reduces greenhouse gasses.


The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling.


The sophisticated gas flow control system provides a high turndown ratio which reduces energy waste and excessive boiler cycling.


NHB integrated control provides industry-leading options and features including adjustable heat capacity, temp boost for outdoor reset control, adjustable anti-cycle timer and freeze protection.


1/2" gas pipe capability up to 24' (subject to local codes). Cuts installation time, no need to install new gas lines for retrofit applications.

 
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