NPE series Operation Manual
Contents
1. L NaVIeN Condensing Water Heater Operation Manual Model NPE 180A 210A 240A NPE 1 21 OS 240S ok Lew NOx D emissions X SERTIMES complies with SCAQMD rule 1146 2 ol pt hese Lead Free www ahridirectory org Keep this manual near this water heater for future reference _ w 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 A 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 WHATTO DO IF YOU SMELL GAS e Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building e Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions e 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 WINAVICN 2 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 Heate2. Support at 1 800 519 8794 E445 Abnormal operation Bypass mixing valve Contact Technical Support at 1 800 519 8794 E515 Abnormal operation PCB Ensure that the electrical cord is properly grounded E517 Abnormal operation DIP switch setting Contact Technical Support at 1 800 519 8794 E593 Abnormal operation front panel key Contact Technical Support at 1 800 519 8794 E615 Abnormal operation input and memory Contact Technical Support at 1 800 519 8794 E736 Abnormal operation cascade communication Contact Technical Support at 1 800 519 8794 E760 Flushing service alarm Contact the installer to perform routine service E782 onormal operation mainpankl Contact Technical Support at 1 800 519 8794 communication If any of these remedies do not resolve the problem contact Technical Support at 1 800 519 8794 16 Troubleshooting LIMITED WARRANTY NAVIEN AMERICA INC Warranty Period Navien products come with a limited warranty covering labor parts and the heat exchanger The following warranty periods begin to run from the date of original installation The date of original installation must be provided to Navien and upon request proof of the original installation date must also be provided to Navien When the product is installed in a new construction the commencement date shall be dated upon which the end user takes title to the property APPLICABLE WARRANTY PERIOD Labor Parts nest Product Warranty Warranty
3. a freeze protection function that requires electricity The freeze protection function will operate regardless of whether or not the power is turned on or off as long as the electric supply is still connected Do not close the gas valve except for routine maintenance as this will limit additional freeze protection A model only If the power or gas supplies must be disconnected for an extended period drain the water heater Freezing damage may occur if there is a loss of power or an interruption in the gas supply to the water heater If the water heater will not be used for an extended period drain the water heater Maintaining the Water Heater If hot water will not flow and you suspect that the water heater is frozen follow these steps 1 Press the Power button on the front panel to turn off the water heater 2 Close the gas valve Open the hot water faucet that is closest to the water heater Use a hair dryer or a portable electric heater to heat up both the primary and secondary Heat Exchangers Check every few minutes to see if water is running at the open faucet When the water starts flowing again check the water heater and piping for leaks If you detect any leaks or the water heater is not operating properly contact an authorized technician or licensed professional 5 Troubleshooting 5 1 Solving Basic Problems If you experience a problem with the water heater refe
4. appears on the display e To exit Commercial Mode Press the up and down button simultaneously for 10 seconds LoW appears on the display e To adjust the temperature press the up button for 5 seconds to adjust in 10 F 5 C increments e Commercial Warranty Applies when this mode is used Refer to the Warranty for more details 3 3 Viewing Basic Information To view information about the water heater press the Information button Press the or buttons to switch between the information types Display Description Flow rate in gallons per minute GPM Hot water outlet temperature OUT Cold water inlet temperature IN To exit information mode press the Reset button 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 this manual or contact Technical Support at 1 800 519 8794 Operating the Water Heater 9 4 Maintaining the Water Heater 4 1 Cleaning the Water Heater 3 Close the gas valve 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 he
5. at any location outside the United States and Canada e Removal or alteration of the rating plate Other Terms This Limited Warranty is subject further to the terms and conditions set forth herein and as may be further specified in the Terms and Conditions page located on Navien s website at www navienamerica com WITH THE EXCEPTION OF THIS LIMITED WARRANTY NAVIEN DISCLAIMS ANY OBLIGATION OR LIABILITY WITH RESPECT TO THE PRODUCTS OR THEIR SALE AND USE AND NAVIEN NEITHER ASSUMES NOR AUTHORIZES THE ASSUMPTION OF ANY OBLIGATION OR LIABILITY IN CONNECTION WITH THE PRODUCTS THIS DISCLAIMER INCLUDES ANY OTHER WARRANTIES EXPRESS IMPLIED OR STATUTORY RESPECTING THE PRODUCTS OR ANY PARTS OR COMPONENTS THEREOF INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Navien s total liability for any claim arising hereunder shall not exceed the purchase price which you paid for the Product NAVIEN SHALL NOT IN ANY EVENT BE LIABLE FOR INDIRECT SPECIAL CONSEQUENTIAL OR LIQUIDATED DAMAGES OR PENALTIES INCLUDING CLAIMS FOR LOST REVENUE PROFITS OR BUSINESS OPPORTUNITIES EVEN IF NAVIEN HAD OR SHOULD HAVE HAD ANY KNOWLEDGE ACTUAL OR CONSTRUCTIVE OF THE POSSIBILITY OF SUCH DAMAGES Warranty INNAVICN Condensing Water Heater Operation Manual Getting Service If your water heater requires service you have several options for getting service Contact Technical Support at 1 800 519
6. 8794 or on the website www navienamerica com For warranty service always contact Technical Support first e Contact the technician or professional who installed your water heater e Contact a licensed professional for the affected system for example a plumber or electrician When you contact Technical Support please have the following information at hand Model number Serial number e Date purchased Installation location and type Error code if any appears on the front panel display Version 3 00 April 30 2013 NAVIECN yore KD 20 Goodyear Irvine CA 92618 TEL 949 420 0420 FAX 949 420 0430 www navienamerica com 20026535B
7. Exchanger Warranty NPE Series Water Heater Single Family 1 year 5 years 15 years Residential Use NPE Series Water rleater 1 year 3 years 10 years Commercial or y y y Combi Use Combi refers to a combination potable water and space heating application Water heaters cannot be used in space heating only applications Warranty Claim Procedures To obtain warranty repair service the end user or homeower must contact the original installer of your Navien product If the original installer cannot be identified the end user or homeowner may contact Navien s Technical Administration Department at 800 519 8794 Proof of purchase is required to obtain warranty service Warranty Service At its option Navien will replace the defective component part s or heat exchanger in accordance with the terms of this Limited Warranty if it fails in normal use and service during the Applicable Warranty Period identified above The replacement component must be Navien original factory component Navien at its sole discretion may replace the product with a new or refurbished product of comparable quality and design The replacement component will be warranted only for the unexpired portion of the original component s Applicable Warranty Period Payment for labor in completing the warranty service is subject to Navien s prior written approval and shall be subject to Navien s schedule of approved labor allowances Warran
8. ater has cooled down before cleaning To clean the water heater wipe the outside with a damp cloth Use a non acidic non abrasive cleaner to remove any surface stains The front panel is moisture resistant but it is not waterproof Keep it as dry as possible 4 2 Draining the Water Heater You need to drain the water heater before performing 4 Close the water supply valve on the inlet to the water heater If maintenance tasks such as cleaning the inlet water filter or to there is no valve turn off the water supply at the water main prevent the water heater from freezing when it will not be used for an extended period Refer to the 2 2 Parts of the Water Heater on page 6 for details about part locations To drain the water heater 1 Place a bucket under the water heater to collect the residual water inside the water heater 2 Press the Power button on the front panel to turn off the power to the water heater 5 Open all hot water faucets completely The water that remains in the plumbing lines will drain out 10 Maintaining the Water Heater 6 Remove the recirculation inlet filter from the bottom of the water heater A model only Cold Water Recirculation Inlet Filter Inlet Filter A model only Pump Drain Plug A model only 7 Open the pump drain plug A model only 8 Remove the cold water inlet filter 9 Allow the residual wate
9. culation pump outlet and the cold water line at the B valve 6 Connect one tube to the circulation pump inlet and place the free end in the bucket 7 Pour the cleaning solution into the bucket 8 Open both A and B valves 9 Turn on the circulation pump and allow the solution to circulate through the water heater for at least 45 minutes 10 Rinse the cleaning solution from the water heater a Remove the free end of the drain tube from the bucket and place it in the condensate drain or laundry tub wherever 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 11 Disconnect all tubes 12 Remove the cold water inlet filter from the water heater and clean out any residue 13 Reinsert the filter and ensure the filter cap is securely tightened 14 Reconnect the power supply to the Water Heater 15 Press the Power button on the front panel to turn on the water heater Maintaining the Water Heater 4 4 Cleaning the Inlet Water Filter and Recirculation Inlet Filter To clean the filters 1 Drain the water heater Refer to 4 2 Draining the Water Heater on page 10 2 While the filters are removed rinse it with clean running water cold and if necessary scrub it clean with a brush Cold Water Inlet Filt
10. densate Water Clean out f Inlet Water Filter g Cold Water Inlet Connection Condensate Drain Connection 6 About the Water Heater 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 g EN Error Master Unit A code will appear on the display Cascade operation A i i i AICI Hot Water Recirculation LEIJ Display Recirculation Mode c i 3 Z Diagnostics button Up button For installers only Increases the temperature d j Information button Down button Shows basic information Decreases the temperature e k RESET 0 Reset button Power button Resets the water heater When an error occurs Turns the water heater on or off f Combusting When the gas burner is on About the Water Heater 7 8 3 Operating the Water Heater 3 1 Turning the Water Heater On or Off 3 2 Adjusting the Water Temperature A 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 To turn the water heater on or off press the Power button The water heater is set to 120 F 49 C by default To adjust the water temperature 1 Make sure that all hot water faucets are closed and ensure that the internal circulator and any exter
11. er Recirculation Inlet Filter A model only 3 Reinsert and tighten the filters Cold Water Inlet Filter Recirculation Inlet Filter A model only 4 Refill the water heater Refer to 4 2 Draining the Water Heater on page 10 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 will appear on the front panel display To properly maintain the water heater you should clean the air intake filter every 3 4 months To clean the air intake filter 1 Press the Power button on the front panel to turn off the water heater 2 Disconnect the power supply to the water heater 3 Remove the front cover of the water heater 4 Remove the screw that secures the air intake filter the filter is located at the top left of the water heater 5 Pull the filter out of the water heater 08 i C Q 6 Remove the filter from the plastic assembly and clean it with a toothbrush and clean running water MJ 7 Allow the filter to dry completely 8 Reinsert the filter into the plastic assembly 9 Place the filter assembly back into the water heater and secure it with the screw 10 Replace the front cover 11 Reconnect the power supply to the water heater 12 Press the Power button on the front panel to turn on the water heater Maintai
12. ice and Return Policy procedures previously provided to Installer and as is available on Navien s website Such policies include but are not limited to the Installer s failure to first contact Navien Technical Support while in front of the product for purposes of trouble shooting the identified problem or issue e Use of the NPE Series Water Heater for space heating only purposes shall void the warranty Warranty 17 18 e 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 e Improper conversion from natural gas to LP gas or LP gas to natural gas or attempt to operate with a type of gas not specified for the water heater e Any damage malfunction or failure caused by abuse negligence alteration accident fire flood freezing wind lightning and other acts of God e Operating using or storing the water heater in a corrosive or contaminated atmosphere or environment e Operating the water heater at water temperatures outside the factory calibrated temperature limits and or exceeding the maximum setting of the high limit control e Operating the water heater when it is not supplied with potable water at all times e Subjecting the heat exchanger to pressures or firing rates greater or lesser than those shown on the rating plate e Installation
13. ized technician or licensed professional Improper adjustments alterations service or maintenance may lead to property damage personal injury or death and will void your warranty Do not operate the water heater if you feel something is wrong with it Doing so may result in product damage or personal injury Do not allow children to operate or access the water heater Doing so may result in product damage or personal injury Do not attempt to change the water temperature while the water heater is being used Doing so may result in personal injury Do not turn on the water heater unless the water and gas supplies are fully opened Doing so may damage the water heater Do not turn on the water if the cold water supply shut off valve is closed Doing so may damage the water heater Do not use this water heater for anything other than its intended purpose as described in this manual Do not remove the front cover unless the power to the water heater is turned off or disconnected Failure to do so may result in electric shock When servicing the controls label all wires prior to disconnecting them Failure to do so may result in wiring errors which can lead to improper or dangerous operation Do not use unapproved replacement or accessory parts Doing so may result in improper or dangerous operation and will void the manufacturer s warranty Do not place anything in or around the vent terminals such as a clothe
14. lter See page 12 e Flush the heat exchanger See page 11 Exhaust overheating the water heater shuts e Turn off the system for at least 30 minutes and then restart it E030 down when the flue temperature exceeds e Clean the cold water inlet filter See page 12 149 F 65 C Flush the heat exchanger See page 11 E046 Abnormal operation limit control Contact Technical Support at 1 800 519 8794 E047 Abnormal operation exhaust thermostat Contact Technical Support at 1 800 519 8794 E060 Abnormal operation dual venturi Contact Technical Support at 1 800 519 8794 E109 Abnormal operation fan motor Clean the intake air filter See page 13 e Ensure that the exhaust pipe is free of obstructions E110 Abnormal air pressure ae Buenas secs e Clean the intake air filter See page 13 E407 o Gutier tm rmistor peiiot short Contact Technical Support at 1 800 519 8794 E421 e imeti thermistor open orshont Contact Technical Support at 1 800 519 8794 E432 E irilet2 thermistor open or short Contact Technical Support at 1 800 519 8794 E434 Abnormal operation water adjustment valve Contact Technical Support at 1 800 519 8794 e External Ensure that all water supply and return lines are open E438 Abnormal operation circulation pump ici p 7 5 er suppy Era eppen e Internal Check the direction of the 2 way valve E439 Abnormal operation flow sensor Contact Technical Support at 1 800 519 8794 E441 je Inlet thermistor open grenon Contact Technical
15. mpletely e Ifan error code is displayed refer to 5 2 Understanding Error Codes on page 16 It takes too long for hot water to reach 2 Are you using the external recirculation mode the fixtures y 9 Have a contractor install a recirculation return line from the furthest faucet back to the water heater The water is not hot enough Is the set temperature too low e Check the water heater s temperature setting Refer to 3 2 Adjusting the Water Temperature on page 8 e Check for cross plumbing between the cold and hot water lines The water is too hot Is the set temperature set too high Check the water heater s temperature setting See 3 2 Adjusting the Water Temperature on page 8 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 e Ensure that the main gas supply valve is open E004 False flame detection e Ensure that the electrical cord is properly grounded E012 Flame loss e Clean the intake air filter See page 13 e Ensure that the electrical cord is properly grounded Turn off the system for at least 30 minutes and then restart it E016 Overheating of heat exchanger e Clean the cold water inlet fi
16. nal circulating pumps are off CED sf a hot water faucet is open you can adjust the temperature only from 98 110 F 37 43 C When the power is on the temperature will appear on the front 2 i Press the Up or Down buttons until the desired panel display temperature appears on the display You can adjust the temperature while the display is flashing Once the display stops flashing the temperature setting is stored A 1 EE UEL IN OUT Lim GPM amp CA 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 temperature range Adjusting the water Temperature range temperature 98 F 120 F Fahrenheit mode 5 Sen 36 C 50 C Celsius mode 1 F or 0 5 C increments 120 F 140 F Fahrenheit mode Press for 2 seconds to adjust in 50 C 60 C Celsius mode 5 F or 2 C increments The water heater will not provide hot water instantly at the hot water faucet unless a recirculation line has been installed from the furthest fixture back to the water heater For A models the unit must be set to external recirculation mode Operating the Water Heater 3 2 1 Using Commercial Mode To use water above 140 F 60 C up to 182 F 83 C you can use Commercial Mode e To enter Commercial Mode Press the up and down button simultaneously for 10 seconds HIGH
17. ning the Water Heater 13 14 4 6 Protecting the Water Heater from Freezing CAUTION Damage due to freezing is not covered by the Navien limited warranty e Freezing damage is most likely to occur due to back drafting caused by negative pressure in the building This is not a manufacturing defect and therefore Navien will not warrant any damages due to freezing The installer is responsible for ensuring that there is sufficient make up air to avoid such a situation and the owner is responsible for ensuring that protection against freezing is maintained e To avoid freezing issues we strongly 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 the water heater to the outdoors This type of vent system minimizes air movement within the water heater e This water heater has an optional recirculation mode that is used for freeze protection This mode should prevent the water heater from freezing even if the intake air duct is not vented directly e The water heater is designed for indoor or outdoor installation However it should not be installed outdoors in areas that are prone to freezing temperatures To ensure that the water heater does not freeze follow these guidelines Do not unplug the power supply cord except for routine maintenance The water heater has
18. ot store or use gasoline or other flammable liquids near this water heater Doing so may result in fire or explosion e Do not place combustibles such as newspapers or laundry near the water heater or venting system Doing so may result in a fire Donot place or use hair sprays spray paints or any other compressed gases near the water heater or venting system including the vent termination Doing so may result in fire or explosion Do not operate the water heater with the front cover opened Doing so may result in fire or carbon monoxide CO poisoning which may result in property damage personal injury or death e Do not operate this water heater without proper venting Doing so may result in fire or carbon monoxide CO poisoning which may result in property damage personal injury or death Inspect the vent termination and air intake supply annually to ensure proper operation of the water heater Turn off and discontinue use of the water heater if any of the vent pipes vent elbows or intake pipes are damaged in any way separated at a joint or show evidence of corrosion rusting or melting Do not touch the power cord or internal components of the water heater with wet hands Doing so may result in electric shock O 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 author
19. r On or Off 8 3 2 Adjusting the Water 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 Heat Exchanger 11 44 Cleaning the Inlet Water Filter and Recirculation Inlet Filter 12 4 5 Cleaning the Air Intake Filter 13 4 6 Protecting the Water Heater from Freezing 14 5 Troubleshooting 15 5 1 Solving Basic Problems 15 5 2 Understanding Error Codes 16 Contents 1 Safety Information The following safety symbols are used in this manual Read and follow all safety instructions in this manual precisely to avoid unsafe operating conditions fire explosion property damage personal injury or death Keep this manual for future reference A DANGER Indicates an imminently hazardous situation which if not avoided could result in severe injury or death Z warning Indicates a potential hazardous situation which if not avoided may result in injury or death O CAUTION Indicates a potentially hazardous situation that if not avoided could result in property damage AN warnine If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of IG A This appliance does not have a pilot It is equipped with an ignition device which automatically lights the burner Do not try to light the b
20. r to drain from the water heater 10 When the water is completely drained reinsert the recirculation inlet filter and the cold water inlet filter and then close the pump drain plug 11 To refill the water heater follow the steps of Draining the Water Heater in reverse 4 3 Flushing the Heat Exchanger O 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 technician or licensed professional Keep in mind that improper maintenance can void your warranty Refer to the 2 2 Parts of the Water Heater on page 6 for details about part locations Before flushing the Heat Exchanger gather the following items e A bucket that is 5 gallons or larger e Cleaning solution diluted with water 3 hoses e A water circulation pump To flush the Heat Exchanger Q O O Navien Easy valve Kit Hot Water Line Cold Water Line Circulation Pump Flushing Kit Maintaining the Water Heater 12 1 Press the Power button on the front panel to turn off the water heater 2 Disconnect the power supply to the water heater 3 Close the C and D valves on the hot and cold water lines 4 Connect one tube to the A valve and place the free end in the bucket 5 Connect one of the tubes to the cir
21. r to the following chart for possible remedies Error codes that appear on the front panel display are explained in the following section For minor problems resetting the water heater may resolve the issue To reset the water heater press the Reset button on the front panel 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 e Is the cold water inlet filter clean No water comes out when the hot water Is an error code displayed on the front tap is opened panel e Is the water heater frozen e Ensure that the shut off valves on the hot and cold pipes are open e Ifan error code is displayed refer to 5 2 Understanding Error Codes on page 16 e Is the cold water inlet filter clean e Is the hot water faucet open wide enough draw at least 0 5 gallons of water per minute GPM through the water heater e Is an error code displayed on the front panel e If there is an external recirculation system installed is there a check valve on the recirculation return line The water from the hot water faucet is cold or turns cold and stays cold e Clean the cold water inlet filter See 44 Cleaning the Inlet Water Filter and Recirculation Inlet Filter on page 12 e Open the hot water faucet co
22. s line that could obstruct the air flow in or out of the water heater This water heater has been approved for use in the USA and Canada only Using the water heater in any other country 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 water Immediately call a qualifed service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water Safety Information 5 2 About the Water Heater 2 1 Description of the Water Heater 2 2 Parts of the Water Heater The NPE series water heater is available in 6 models NPE 180A Combustion NPE 180S NPE 210A NPE 210S NPE 240A and NPE 2405 Air Intake Exhaust Gas Vent The main features are as follows e Potable domestic hot water combination space heating and commercial applications z z e Maximum temperature 182 F 83 C io ff e Dual stainless steel Heat Exchangers with stainless steel piping e Built in pump and 0 4 US gallon 1 5 liter Buffer Tank for internal or external recirculation A model only Bottom View Description Remark a Pump Drain Port A model only b Gas Inlet c Hot Water Outlet Connection d Recirculation Inlet A model only e Con
23. ter heater above 125 F 52 C have a temperature limiting valve or mixing valve installed on the water heater Safety Information A 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 change the temperature setting read the following charts carefully Water Time in which a young child can suffer a Temperature full thickness 3rd degree burn 70 C 160 F Less than 1 second 60 C 140 F 1 second 55 C 130 F 10 second 49 C 120 F 10 minutes 37 C 100 F very low scald risk Before setting the temperature at or above 125 F 52 C consider installing athermostatically controlled mixing valve or temperature limiting valve Contact a licensed plumber or your local plumbing authority for more information Z warnine Shut off the gas supply if the water heater is damaged Have your installer or plumber show you the location of the gas shut off valve and demonstrate how to close the valve If the water heater is damaged as a result of overheating fire flood or any other reason close the manual shut off valve and do not operate the water heater again until it has been inspected by a qualified technician Do n
24. ty Exclusions Navien s Limited Warranty shall be void in the event of an occurrence of any of the following e Improper installation failure to install in strict compliance with the Installation Manual procedures installed by a non licensed installer and installation in violation of applicable rules laws or building codes e Product purchased through the internet other e commerce channels or any installer that obtained the Product from a supplier or distributor not authorized by Navien e Failure to perform regular maintenance misuse operation at settings other than those recommended or specified non compliance with instructions or guidelines set forth in the User s Operation Manual e Modification or alteration of the Product in any manner including but not limited to removal of any component or part addition of any non approved components relocating or moving the Product from its original installation site or any accidental or intentional damage to the Product Installation for non recommended uses e Any damage caused by local adverse conditions including but not limited to hard water deposits lime or mineral build up operating in corrosive atmospheric elements Damage or problems caused by gas flow issues electrical surges flooding fire abnormal external temperature and any other cause of damage not directly caused by a manufacturing defect Installer s failure to fully comply with the Warranty Serv
25. urner by hand B BEFORE OPERATING smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS e Do not try to light any appliance Do not touch any electric 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 e If you cannot reach your gas supplier call the fire department C Use only your hand to push in or turn the gas control knob Never use tools If the knob will not push in or turn by hand don t try to repair it call a qualified service technician Force or attempted repair may result in a fire or explosion D Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water Safety Information 3 4 To prevent burns e Use the lowest operating temperature setting necessary to provide comfortably hot water e If your household has children or elderly or disabled residents consider using a lower temperature setting e Read all the instructions in this manual carefully before changing the temperature setting e Feel the water before using it on children the elderly or the disabled e If it is necessary to set the wa
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