Navien water heater age decoders, water heater manual sources.

In this article series we give details of how to de-code water heater age for all water heater brand. We also discuss the conditions, maintenance, and factors that affect how long a water heater can be expected to last.

Navien Water Heater Age, Manuals, Instructions

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• Contact: Navien Heater Company, 20 Goodyear, Irvine, CA 92618 USA, Website: https://www.navieninc.com/ Tel: 1-800-519-8794 (Technical Support)
  
  Also
  
  Navien America, Inc., 1371 Santa Fe Dr., Tustin CA 92798- Tel: 714-258-9005
  
  Navien has offices in North America, Mexico, South America, Europe, Asia, Russia, and Oceana. KyungDong Navien (KD Navien) was founded in 1978

Above, excerpted from the Navien CH water heater/boiler manual given below, the company shows the two places where you can find the model name and identification code and fuel type for Navien water heaters: inside the front cover or at the lower right side of the heater.

• NAVIEN NPE-A2 CONDENSING WATER HEATER INSTALLATION MANUAL [PDF] (2023) Models NPE-180A2 NPE-210A2 NPE-240A2 NPE-180S2 NPE-210S2 NPE-240S2
  NPE-150S2 
• Navien NPE CONDENSING WATER HEATER (2013) NPE-180A/ 210A/ 240A NPE-180S/ 210S/ 240S
• Navien COMMON EXHAUST VENT INSTALLATION MANUAL [PDF] (2018) retrieved 2021/02/10 original source: https://www.navieninc.com/downloads/common-vent-installation-manual-en
  
  Excerpt:
  The Navien Common Vent System provides an easy way to install the vent system for up to 8 Navien NPE water heater or NHB/NFB boiler units.
  
  By sharing the main intake and exhaust vent pipes, effective system venting is available with less venting materials and minimal number of penetrations on the walls or roofing.
  
  Read all safety messages and carefully follow the guidelines in this manual when installing a common vent system for the Navien NPE water heater or NHB/NFB boiler units.
• NAVIEN CONDENSING WATER HEATER CH 180 CH210 CH 240 MANUAL [PDF] (2013) These Navien water heaters are used for potable water heating and for space heating applications including snow melting systems.
  
  CH-180: Min: 17,000 Bthu/h, Max: 150,000 Btu/h - 6.95 gpm flow rate
  
  CH-210: Min: 20,000 Btu/H, Max: 275,000 Bth/h - 7.7 gpm flow rate
  
  CH-240: Min: 20,000 Btu/h, Max: 199,000 Btu/h - 8.6 gpm flow rate
  
  CH-240 ASME: Max: 199,000 Bth/h - 8.6 gpm flow rate
  
  Dip switches for this Navien water heater are used to set supply temperture and return temperature ranges, master/slave heater relationships, communications, cascaded water heater settings, and the manual notes that you need to distinguish error code settings on master units from slave heater units.
  
  Dip switch functions and assignments for Navien water heaters vary depending on the heater's use, such as Cascade Water Heater Setup DIP switches (givenj ust below) vs Combination water heater DIP switch settings further outlined in the manual beginning on page 50.
  
  Dip Switches 1 & 2: burner operation, select normal, maximum, or minimum operation
  
  Dip Switch 3: select gas type (propane or natural gas)
  
  Dip Switch 4: select individual vs. common venting for cascaded water heater setups
  
  Dip switchs 5 & 6 identify the model and set BTU operating range.
  
  Dip Switch 5: BTU select 1 & Dip Switch 6: BTU select 2
• NAVIEN CH COMBINATION WATER HEATER / HEATING BOILER SERVICE MANUAL [PDF] (2010) Combination water heater / heating boiler. Models CH-180 CH-210 CH-240 CH-240 ASME
  
  This manual includes all of the Navien water heater DIP switch for the 6 DIP switch controls, settings & error codes, beginning on p. 54 continuing through p. 107.
  
  Excerpt: s
  
  KD Navien condensing gas boiler is a fully automatic, wall hung, fan assisted balanced flue condensing boiler for use with Natural Gas and Liquid Propane Gas. This appliance is fully modulating and provides central heating and domestic hot water.
  
  The appliance always gives priority to DHW supply.
  
  The appliance is designed to be used with a circulation pump, a divert valve assembly, a flow sensor, a DHW plate heat exchanger and safety valve.
  
  A separate heating expansion vessel is required. Internal frost protection and an electronic control unit are incorporated within the boiler. Any non-power stealing room thermostat or set of contacts can be used with boiler.
  
  The space-heating water is controlled by the thermostat (boiler control) provided.
  
  This control enables the user to either set the desired room temperature or set the heating water temperature. In some cases this thermostat may not be suitable for multi-system applications.
  
  (The installing contractor will make this determination and install suitable alternative controls.)

Above: An example drawing of a Navien Multiple NPE-A tankless water heater system showing piping arrangement.

• Navien NPE SERIES TANKLESS HEATERS COMMERCIAL APPLICATION GUIDE [PDF] Models NPE-180A NPE-210A NPE-240A NPE-150S NPE-180S NPE-210S NPE-240S - retrieved 2021/02/10 original source: navieninc.com/downloads/npe-a-s-guides-npe-commercial-application-guide-en
  
  Describes the Navien Ready-Link manifold heating sytems configuration of up to 16 tankless water heaters in rack systems, capable of providing either 62.4 GPM at 100 degF temperature rise or a peak of 3,744 GPH (note that this is per HOUR) in a tankless unit only with controlled outlet temperature/flow. The company notes:
  
  Tankless unit only system has controlled outlet temperature/flow.
  
  GPH requirement should be considered to be the peak maximum GPM flow rate x 60 min. E
  
  x: One NPE-240 is 3.9 GPM @ 100°F Rise x 60 min = 234 GPH. (2) Tankless with Storage GPH 1st hour output is calculated by tankless recovery rate and 75% of available storage capacity.
• Navien NPE-S 240 INSTALLATION AND OPERATION MANUAL [PDF]

Below: a tankless water heater troubleshooting chart from Navien, excerpted from the manual just above.

[Click to enlarge any image]

• Navien NPE WATER HEATER USERS INFORMATION MANUAL [PDF] (2002) for NPE Models NPE-180A NPE-210A NPE-240A NPE-150S NPE-180S NPE-210S NPE-240S
• Navien NPE WATER HEATER BUILDER's BROCHURE [PDF] for builders & contractors.
• NAVIEWN PeakFlowE ANTI SCALE FILTER INSTALLATION & OPERATION MANUAL [PDF]
  Excerpt:
  
  The PeakFlowE Anti-Scale System provides protection from scale formation on internal plumbing surfaces. The PeakFlowE system is a single cartridge-based system that must be installed on a cold water line prior to a single residential water heating device (water heater or tankless water heater).
  
  The PeakFlowE system is built with the finest and most advanced materials and each system is quality inspected and pressure tested prior to shipment. With proper installation and routine maintenance, you will have years of trouble-free operation.
  
  Please refer to this manual when performing routine filter changes. The instructions make periodic maintenance quick and easy and ensure you will receive maximum benefit from your system.
• Navien PRODUCT CATALOG for CANADA [PDF] (2021) retrieved 2021/02/10 original source: https://www.navieninc.com/downloads/navien-product-catalog-canada-en
• Navien READY-LINK MANIFOLD SYSTEM BROCHURE [PDF] (2021) retrieved 2021/02/10 original source: https://www.navieninc.com/downloads/npe-a-s-brochures-ready-link-manifold-system-brochure-en
  This brochrue describes Commecial DHW Modular Manifold Mounting Systems used with Navien's NPE water heater series to gang or mount multiple tankless water heaters together on a manifold.
• Other downloads of these manuals are available from Navien and are provided in French and Spanish - MX at navieninc.com/products/npe-240s/downloads

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Reader Q&A - also see RECOMMENDED ARTICLES & FAQs

On 2023-05-07 by InspectApedia Editor (mod) - re-set the tankless water heater restored hot water flow

@Jeremy,

Thank you so much for taking the time to follow up with us and to describe the cure for your sudden loss of hot water. We'll be sure to keep this discussion with the article above as it will help other readers who lose all hot water flow, particularly from a tankless demand water heater.

Yes the old question of Joseph turned on is one that we should remember to check.

Curious about the diagnosis of your particular problem is that your original description said that there was a sudden and complete cease in hot water flow.

Distinguish between a flow of water in temperature of course meeting whether or not the water is hot.

Perhaps a bit unusual them with a tankless or instant water heater is turned off one of the effects would be that it also completely stops water flow.

This excerpt from the Navien NPE 240S manual mentions total loss of hot water flow, but one has to read *above* the table first to find the company's suggestion:

"If resetting the water heater and attempting the remedies suggested below ... "

which suggests that maybe a first thing Navien wants you to try is to re-set the water heater. The directions are a bit ambiguous on this point. You'll see that notice just above the tankless water heater troubleshooting chart given above on this page.

For other readers: if you don't already have the instruction manual for your Navien water heater, download the manual as a free PDF above on this page.

On 2023-05-07 by InspectApedia Editor (mod)

@Jeremy,

Thank you so much for taking the time to follow up with us and to describe the cure for your sudden loss of hot water.

Yes the old question of Joseph turned on is one that we should remember to check.

Curious about the diagnosis of your particular problem is that your original description said that there was a sudden and complete cease in hot water flow.

Distinguish between a flow of water in temperature of course meeting whether or not the water is hot.

Perhaps a bit unusual them with a tankless or instant water heater is turned off one of the effects would be that it also completely stops water flow.

On 2023-05-07 by Jeremy - Navien NPE240 water heater flow restored: re-set the water heater

@InspectApedia Editor , I just wanted to follow up in case anyone else has this situation. Thank you for taking the time to give this answer.

Fortunately, my problem had an easy fix. I, for no other reason than it was there, hit the power button on the instant hit water heater.

I waited a few minutes, any when I turned it back on everything worked. The only way I know to fix computers, also worked for my hot water heater. I had assumed that if the issue was the heater, I would just have cold water.

I had no idea it would completely shut off the hot water leg in my house. It never showed an error code or anything. I hope this helps someone else, and I appreciate this site being the resource that it is.

On 2023-05-02 by InspectApedia Editor (mod) - what to check if you suddenly lose all hot water flow

@Jeremy,

Often when we have a sudden loss of all flow at hot water outlets while cold flow remains normal, the explanation is a blockage in either cold water in to the water heater or hot water out of the heater onwards to the building.

For example recently when I discussed this problem with an IAP reader, I suggested going to the point in the water supply piping where the main water supply (all cold) split off to continue hot to house and hot into and thence out of water heater.

At a pipe tee near the water heater he found a near total blockage.

A bit of covering of a water filter had broken loose, flowed through the piping and lodged at the first tee that was feeding the hot water system. Blockage removed, problem solved.

So we follow the water piping from that point in your system, if necessary cutting the piping to see if there is or is not flow. Particularly with the plastic pipes in your photos, cutting and repairing is quite easy using quick-to-install SharkBite fittings.

Follow the water pipes, cut, check for flow, patch, and let me know where the blockage was found.

On 2023-05-02 by Jeremy - Our hot water just suddenly stopped flowing.

Our hot water just suddenly stopped flowing. Our cold water is working normally. There wasn’t a slow diminishing hot water flow. It went from normal to nothing without us touching anything that could have affected it. It hasn’t been cold, so it’s not frozen pipes. We don’t seem to have a very high mineral content in our water.

At least, in the 15 years I’ve lived here I haven’t noticed significant mineral deposits on anything.

We have a Navien (model NPE-240-S) that we have never had any problems with.

I have closed and reopened each of the 3 ball valves entering or exiting the heater, even though they hadn’t been adjusted in years and shouldn’t have been an issue.

The natural gas and power to it haven’t been interrupted. I’m at a loss and don’t have a clue how to begin.

This Q&A were posted originally

at HOT WATER PRESSURE LOSS 

Question: can I use a Navien PNE S-240 water heater for radiant floor heat?

2021/02/10 George Brisson said:
Hi.

I have a tankless propane water heater Navien PNE-S 240 maximum rated output at 199000 BTU/H used to supply domestic hot water only

I would like to know if i can add a radiant heating system to it. It will be used to heat my basement concrete floor as a secondary heating system. The surface to be heated consist of 5 loops of 1/2'' pex for a total of 1085 ft. Thanks

This Q&A were posted originally

at WATER HEATERS for HOME HEATING USE?

Moderator reply: Navien NPE-S 240 series water heater and space heating: a Commercial or Combi model can support building heating systems

George,

Above on this page we give the general considerations in deciding if a given water heater can be used for building heating systems including a radiant heat floor system.

Do you mean Navien NPE-S 240 ? I think so.

And of course check the Navien NPE-S 240 INSTALLATION AND OPERATION MANUAL [PDF] available from Navien or here at InspectApedia.com at

Navien NPE CONTRACTOR BROCHURE [PDF]

Watch out: be sure that the Navian heater you are going to use for your radiant heat flooring is in fact the manufacturer's model that is approved for that application: the Navian Commercial or "Combi" model, where the company says

Combi refers to a combination potable water and space heating application.

Water heaters cannot be used in space heating only applications.

The following excerpt pertaining to using a Navien water heater for space heating is from Navien's Contractor Brochure

Navien H2Air™ Kit* for combination space heating and domestic hot water production

For combination space heating and domestic hot water An innovative use for the NPE-A’s integrated circulator, designed for both retrofit and new construction residential applications.

Navien’s H2Air™ Kit* consists of an add-on controller that allows for space heating and DHW system integration between NPE-A Series tankless water heater models and a hydronic air handler.

* Compatible with NPE-A series units produced on or after May 31, 2014.

Watch out: Check you water heater's data plate to confirm that your model can be used as you ask. An example from Navien's IO manual is shown just below.

For other tankless or any other water heater product, In my OPINION I'd be reluctant to ask a water heater to do double duty as providing both domestic hot water (washing and bathing) and building heating.

The manufacturer, in this case Navien, are the people to ask.

Call Navien at 1-800-519-8794

On 2019-07-27 by (mod) - Vent clearance distances for Navien condensing water heaters CH series

Anon:

The manual for your Navien CH180 Tankless water heater is available from the company at the link I gave earlier, or also here at InspectApedia

at NAVIEN WATER HEATER AGE & MANUALS

Navien notes that all of its clearance requriements are in accordance with ANSI Z21.10.3 and the National Fuel Gas Code ANSI Z223.1 / NFPA 54 and CGA B149.1 National Gas and Propane Installation Code. See the illustration here and the table below.

The vent clearance distances for the heater are given on p. 35 in the manual; I'll post two clips here that give distances.

This Q&A were posted originally

at GAS APPLIANCE / HEATER DIRECT VENT CLEARANCES

On 2019-06-26 by (mod) -

Thanks for the added detail - let's both see what we can find on this Navien model.

The "T Love" is NOT a Navien water heater model name, part number nor term, it's a name associated with an excellent plumbing information website by Terry Love.

Your Water Heaterr models include a Navien CH 180 Gas Fired Water Heater and a Navien CH 210 Gas Fired Water Heater

If you don't have the IO and Users Manuals for your Navien CH water heater, check the links above on this page where you can download those guides as a PDF file.

On 2019-06-25 by Anonymous

I didn't realize auto type somehow changed love to loves. :) These are 2013 Navien T love Ch 180's on left and right. The middle is a 2013 Navien T love CH 210.

On 2019-06-21 by (mod) - Safety of Navien CH water heater vents that may be snow-covered

A good place to start is with the installation instructions from the manufacturer.

Navien Heater Company has a website with plenty of resources and product instruction downloads https://www.navieninc.com/ - you'll need your specific product type, name, model number, and on occasion, serial number.

1-800-519-8794

or

https://www.navieninc.com

Navien says the heater vent has to be at least 7" above ground, but where there is snow cover you need to be above the top of the maximum anticipated snow depth OR the vent exits need to be protected from being covered by snow by an external means.

Watch out: any direct vent heating appliance whose air intake or exhaust can be blocked by snow or anything else is potentially unsafe and risks fatal carbon monoxide poisoning of building occupants.

On 2019-06-21 by Joe

Here is the direct vent systems that the Kalamazoo, MI city is finding no problem with despite smelling the exhaust inside at times. Especially in winter when these were all but buried.

We can get up to 2 ft snow here at times. They are saying the clearances are accurate, but we are finding they are not. These 3 systems are Navien T loves. 2 are CH 180s and the middle is a CH 210.

All are common vented intake from a window well you will see in pictures(bottom left).

Bushes may be the problem as well. Furthermore the bottom of the vent exhausts come out of the building at ground level behind the bushes.

Being this does not fit the direct venting specifications what kind of setup would this be classified?

What are your thoughts as we seem to be hitting road blocks getting the city to see there is a problem here.

...

Continue reading  at WATER HEATER LIFE or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX.

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