How to unlock a navien tankless water heater

 Navien makes NPE-2 Series and NPN Series tankless water heaters that provide endless domestic hot water, all while keeping your utility bills low.  These water heaters use a dual convection system to circulate hot water over the same surface area as traditional tankless water heaters, which reduces energy costs by up to 75%.

The NPE-2 series is an efficient tankless water heater that works with up to 2.5 gallon per hour of hot water, which is much more economical than a traditional tankless water heater. With high efficiency and low energy usage, these heaters are perfect for any home or office.

  For instance, in this article you can find the product details and specifications, as well as a complete overview of the heating system. One reason to buy a tankless water heater is that you don’t have to worry about running an oil burner in order to make hot water. All the water comes from the tank and runs through the same pipes as your home’s heating system.

navien tankless water heater
navien tankless water heater

 Condensing Water Heaters  

Navien Premium Efficiency condensing tankless water heaters are the NO#1 selling high efficiency condensing tankless water heaters in North America.  “Navien Premium Efficiency Condensing Tankless Water Heaters are the NO#1 selling high efficiency condensing tankless water heaters in North America.”    The NPE-2 series offers ultra-high efficiency to keep your utility bills low and exclusive Comfort Flow technology.  

New NPE-A2 Series

Three NPE-A2 Advanced Premium models offer a Uniform Energy Factor up to .95 and feature Navien’s patented Comfort Flow system.  Showering, washing dishes, and dishwashing are all activities that require a lot of water. Because of this, it’s important to have a high-efficiency tankless water heater. A tankless water heater makes use of the water available without any extra pumping of water into the system. This is usually accomplished by using a pump and thermodynamically driven evaporator to transfer heat from the heating element to the cold water lines in the system.  

New NPE-S2 Series

Four NPE-S2 Standard Premium models provide higher energy output and lower energy consumption. These features result in a lower installation cost and operating cost.

Tankless Water Heaters FAQs

 How can I use ½” gas pipes with the NPE-2 condensing gas tankless water heater?   

 ¼” gas pipe can be used as long as the fitting is sized appropriately.  

 Pipe size, length of gas pipe, and pressure drop are all factors that affect gas delivery.  

 Please refer to the gas pipe sizing table of the National Fuel Gas Code to ensure you have enough gas supply for your unit.  

Gas water heaters that use natural gas have to be the first appliance off the gas meter?

 No, it is not necessary that the NPE-2 condensing tankless gas water heater should be disconnected from the gas meter before starting the appliance.    

 It can be installed to replace a traditional tank water heater.

What type of venting can I use for the NPE-2 condensing gas water heater?  

  NPE-2 is approved to be vented with 2”vent material.    3 ” vent material can also be used (up to 150 foot long, no maximum length of elbows, and reduce 5 linear feet per elbow).  

Approved vent materials are PVC Schedule 40, CPVC Schedule 80, Approved Polypropylene, and stainless steel.  You need to read the label and make sure you buy the right vent. There are quite a few types of vents that are approved for use in water heaters, but not all of them will work with a Navien tankless water heater. You should always read the label before you buy and make sure that you’re buying the right type of vent for your water heater.  

Is it safe to use PVC in a gas water heater?.  

Yes, with the NPE condensing tankless gas water heater you can use PVC Schedule 40, which allows for zero inch clearance to combustibles.  When you’re trying to buy a tankless water heater, there are several factors you need to consider. Some are related to technical specs and others are related to practicality. For example, the ability to install it in a single family home vs. a multi-family dwelling can make a difference.  

Does the navien tankless water heater NPE-2 include a remote?

Yes, the NPE-2 has built in display and control allowing for simple and easy operation.  Yes, the NPE-2 has a built-in display and control allowing for simple and easy operation. The NPE-2 features a display (analog and digital) that shows current water temperature, tank pressure and flow rate. You can also adjust temperature from a wide range from 55°F up to 120°F. The NPE-2 also has an easy-to-use touch pad interface that allows you to select desired settings from 8 options.   

Is the NPE-2 weatherproof OR Install Outdoor?  

Yes, the NPE-2 can be mounted outdoors using the Navien Outdoor Vent Kit.  It is recommended the unit only be mounted outdoors in mild climates.  It is recommended that the NPE-2 must only be mounted outdoors in cold climates.   

 Will the NPE-2 gas field be converted to NPE-2?  

 Yes, the NPE-2 is a gas field convertible.  

This should only be performed by a qualified service agency in accordance with Navien America’s instructions.  When working with a brand like Navien, it’s important that you follow instructions and understand how to work the product. When you’re working with a brand when it comes to Navien products, you should always make sure you have a qualified service company that can help you. Make sure that you get the right instruction from someone who understands the product and can help you.  

  Is there a commercial model available for the NPE-2 series?  

The NPE-2 is approved for use in residential, commercial, and heating (combination only) applications.  You’ll want to check with your local plumbing code office to make sure that the NPE-2 is allowed in your area. You’ll also want to check with the manufacturer to make sure that you can use the NPE-2 in your area. If you read about someone having problems with a NPE-2, then it’s best to do your research before purchasing a NPE-2.   If used in commercial or heating applications, the warranty will be adjusted to 8 years on the heat exchanger, 5 years on any other parts, and 1 year labor.  

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