* lead free keep this manual near this water heater for future reference whenever maintenance or service is required. * the wetted surface of this product contacted by consumable water contains less than one quarter of one percent(0.25%) of lead by weight. Model npe-180a/ 210a/ 240a npe-180s/ 210s/ ...
2 contents contents 1. Safety information 3 2. About the water heater 6 2.1 description of the water heater 6 2.2 parts of the water heater 6 2.3 the front panel 7 3. Operating the water heater 8 3.1 turning the water heater on or off 8 3.2 adjusting the water temperature 8 3.3 viewing basic informa...
Safety information 3 warning if you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. This appliance does not have a pilot. It is equipped with an a. Ignition device which automatically lights the burner. Do not try to ...
4 safety information danger this water heater is set to 120°f (49°c) at the factory for your safety and comfort. Increasing the temperature increases the risk of accidental scalding. Water temperatures at or above 125°f (52°c) can cause instant scalding, severe burns, or death. Before you decide to ...
Safety information 5 caution do not attempt to repair or replace any part of the water ● heater, unless it is specifically recommended in this manual. For all other service, contact an authorized technician or licensed professional. Improper adjustments, alterations, service, or maintenance may lead...
6 about the water heater 2.2 parts of the water heater exhaust gas vent combustion air intake bottom view a b c d e f g h # description remark a pump drain port “a” model only b gas inlet c hot water outlet connection d recirculation inlet “a” model only e condensate water clean-out f inlet water fi...
About the water heater 7 a b c d e f g h i j k 2.3 the front panel the front panel allows you to adjust the water temperature and view the operating status or error codes. Remove the protective sheet from the front panel before using it. A error g master unit a code will appear on the display cascad...
8 operating the water heater 3.2 adjusting the water temperature warning before adjusting the water temperature, read “to prevent burns:” on page 4 carefully. Water above 120°f can cause instant scalding, severe burns, or death. The water heater is set to 120°f (49°c) by default. To adjust the water...
Operating the water heater 9 3.4 resetting the water heater if an error message appears, you can try resetting the water heater to resolve the problem. To reset the water heater, press the reset button. If resetting the water heater does not solve the problem, refer to the troubleshooting section of...
10 maintaining the water heater 4.1 cleaning the water heater caution make sure the water heater is turned off and the power supply is disconnected before cleaning the water heater. The water heater may remain hot for several minutes after it is turned off. To prevent burns, wait until the water hea...
Maintaining the water heater 11 4.3 flushing the heat exchanger caution flushing the heat exchanger is a somewhat complicated procedure. Read the following instructions carefully before attempting this procedure. If you are uncertain about any of the steps in the procedure, contact an authorized tec...
12 maintaining the water heater press the power button on the front panel to turn off the water 1. Heater. Disconnect the power supply to the water heater. 2. Close the “c” and “d” valves on the hot and cold water lines. 3. Connect one tube to the “a” valve and place the free end in the 4. Bucket. C...
Maintaining the water heater 13 pull the filter out of the water heater. 5. Remove the filter from the plastic assembly and clean it with a 6. Toothbrush and clean running water. Allow the filter to dry completely. 7. Reinsert the filter into the plastic assembly. 8. Place the filter assembly back i...
14 maintaining the water heater if hot water will not flow and you suspect that the water heater is frozen, follow these steps: press the power button on the front panel to turn off the water 1. Heater. Close the gas valve. 2. Close open the hot water faucet that is closest to the water heater. 3. U...
Troubleshooting 15 if resetting the water heater and attempting the remedies suggested below do not resolve the problem, contact an authorized technician, a licensed professional, or technical support at 1-800-519-8794 for service instructions. Problem possible cause(s) what to do no water comes out...
16 troubleshooting 5.2 understanding error codes when an error code appears on the front panel, refer to the following chart for a definition and possible remedy for the situation. Error code reason self-diagnostic / action e003 ignition failure ensure that the main gas supply valve is open. ● e004 ...
Warranty 17 warranty period applicable warranty period product labor warranty parts warranty heat exchanger warranty npe series water heater (single family residential use) 1 year 5 years 15 years npe series water heater (commercial or combi* use) 1 year 3 years 10 years warranty claim procedures wa...
18 warranty performance problems caused by improper sizing of the water ● heater, the gas supply line, the venting connection, combustion air openings, electric service voltage, wiring, fusing or any other components, parts or specifications. Improper conversion from natural gas to lp gas or lp gas ...
Version: 3.00(april 30. 2013) navien america, inc. 20 goodyear lrvine, ca 92618 tel +949-420-0420 fax +949-420-0430 www.Navienamerica.Com getting service if your water heater requires service, you have several options for getting service: contact technical support at 1-800-519-8794 or on the website...
