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* 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/ 240S

Operation 

Manual

Condensing Water Heater

WARNING

If the information in these instructions is not followed exactly, a fire or explosion may result, causing 

property damage, personal injury, or death.

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any 

 

other appliance.

WHAT TO DO IF YOU SMELL GAS

 

Do not try to light any appliance.

 

Do not touch any electrical switch; do not use any phone in your building.

 

Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

 

If you cannot reach your gas supplier, call the fire department.

 

Installation and service must be performed by a qualified installer, service agency or the gas 

 

supplier.

Содержание NPE-180A

Страница 1: ...exactly a fire or explosion may result causing property damage personal injury or death Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other applian...

Страница 2: ...r Temperature 8 3 3 Viewing Basic Information 9 3 4 Resetting the Water Heater 9 4 Maintaining the Water Heater 10 4 1 Cleaning the Water Heater 10 4 2 Draining the Water Heater 10 4 3 Flushing the He...

Страница 3: ...urn the gas control knob C Neverusetools Iftheknobwillnotpushinorturnbyhand don ttrytorepairit callaqualifiedservicetechnician Force or attempted repair may result in a fire or explosion Do not use th...

Страница 4: ...cald risk Before setting the temperature at or above 125 F 52 C consider installingathermostatically controlledmixingvalveortemperature limiting valve Contact a licensed plumber or your local plumbing...

Страница 5: ...ry will void the manufacturer s warranty Should overheating occur or the gas supply fail to shut off turn off the manual gas valve to the appliance Do not use this appliance if any part has been under...

Страница 6: ...ction h Condensate Drain Connection 2 1 Description of the Water Heater The NPE series water heater is available in 6 models NPE 180A NPE 180S NPE 210A NPE 210S NPE 240A and NPE 240S The main features...

Страница 7: ...Error g Master Unit A code will appear on the display Cascade operation b Hot Water Recirculation h Display Recirculation Mode c Diagnostics button i Up button For installers only Increases the temper...

Страница 8: ...tops flashing the temperature setting is stored Note The water heater will retain your settings during a power outage You can adjust the temperature by the below 10 degree increments depending on the...

Страница 9: ...down button simultaneously for 10 seconds HIGH appears on the display To exit Commercial Mode Press the up and down button simultaneously for 10 seconds LoW appears on the display Note To adjust the t...

Страница 10: ...ou need to drain the water heater before performing maintenance tasks such as cleaning the inlet water filter or to prevent the water heater from freezing when it will not be used for an extended peri...

Страница 11: ...s or larger Cleaning solution diluted with water 3 hoses A water circulation pump To flush the Heat Exchanger A A B B C C D D Navien Easy valve Kit Cold Water Line Hot Water Line Circulation Pump Flus...

Страница 12: ...ever the water heater drains b Close the B valve and open the D valve Do not open the C valve yet c Allow water to flow through the water heater for 5 minutes d Close the A valve and open the C valve...

Страница 13: ...on the front panel to turn on the water 12 heater 4 5 Cleaning the Air Intake Filter If the air intake filter becomes clogged by dust or lint the water heater will cease to operate and Error Code 10...

Страница 14: ...recommend the use of a direct vent exhaust and intake system Your installer should ensure that the exhaust vent pipe and the air intake pipe are both connected directly from the collars on the top of...

Страница 15: ...the cold water inlet filter See 4 4 Cleaning the Inlet Water Filter and Recirculation Inlet Filter on page 12 Open the hot water faucet completely If an error code is displayed refer to 5 2 Understand...

Страница 16: ...air filter See page 13 E407 Hot water outlet thermistor open or short circuit Contact Technical Support at 1 800 519 8794 E421 Cold water inlet1 thermistor open or short circuit Contact Technical Supp...

Страница 17: ...installation site or any accidental or intentional damage to the Product Any damage caused by local adverse conditions including but not limited to hard water deposits lime or mineral build up operati...

Страница 18: ...n outside the United States and Canada Removal or alteration of the rating plate OtherTerms This Limited Warranty is subject further to the terms and conditions set forth herein and as may be further...

Страница 19: ......

Страница 20: ...w navienamerica com For warranty service always contact Technical Suppor t Contact the technician or professional who installed your water heater Contact a licensed professional for th ected system fo...

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