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SBA8723-1
Rev. 03/13

Models : NRC1111-DV

                NRC1111-OD

CONDENSING TANKLESS GAS WATER HEATER

Owner’s Guide

NORITZ America Corporation

- 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.

If the information in this manual is not followed exactly, a fire or explosion 

may result causing property damage, personal injury, or death.

WARNING

Thank you for purchasing this Noritz Tankless Gas Water Heater. 

Before using, please:

Read this manual completely for operation instructions.

Completely fill out the warranty registration card (included separately) and 

mail the detachable portion to Noritz America Corporation.

Keep this manual (and the remainder of the warranty registration card) where 

it can be found whenever necessary.
Installation must conform with local codes, or in the absence of local codes, 

the National Fuel Gas Code, ANSI Z223.1/NFPA 54.

Noritz America reserves the right to discontinue, or change at any time, the 

designs and/or specifications of its products without notice.

FOR USE IN RESIDENTIAL APPLICATIONS.

CERTIFIED

R

*SBA8723*

Low NOx Approved

by SCAQMD

14 ng/J or 20 ppm

(Natural Gas Only)

Summary of Contents for ecoTOUGH NRC111-DV-LP

Page 1: ...al is not followed exactly a fire or explosion may result causing property damage personal injury or death WARNING Thank you for purchasing this Noritz Tankless Gas Water Heater Before using please Read this manual completely for operation instructions Completely fill out the warranty registration card included separately and mail the detachable portion to Noritz America Corporation Keep this manu...

Page 2: ...us situation which if not avoided may result in property damage CAUTION Be sure to do Ground Electric Shock DANGER Icons warning of risk level Important Safety Information 1 This is the safety alert symbol It is used to alert you to potential personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury or death Vapors from flammable liquids will explode and cat...

Page 3: ...ry to repair it Call a qualified service technician Force or attempted repair may result in a fire or explosion D Do not use this water heater if any part has been under water lmmediately call a qualified service technician to inspect the water heater and to replace any damaged parts Continued Prohibited Check the temperature of the running hot water before entering the shower Check the temperatur...

Page 4: ...the heater Prohibited Prohibited NRC1111 DV Do not place outdoors Rain may enter the unit or the burner fire may be blown by the wind causing malfunction or fire as a result Prohibited Outdoor Leave the proper clearance between the water heater and nearby objects trees timber boxes with flammable materials etc Be sure to do Indicates suggested clearances for maintenance Do not place combustibles s...

Page 5: ...nit Do not turn off the water heater while someone is bathing Prohibited Do not use a broken or modified power cord Do not bind bend or stretch power cords Do not scratch modify or subject them to impact or force Do not touch the exhaust vent pipe and exhaust vent terminal during or immediately after operation of the water heater Do not install in locations where excessive dust or debris will be i...

Page 6: ...en water within the device and pipes even in warm environments Be sure to read below for appropriate measures Repairs for damage caused by freezing are not covered by the warranty Take necessary measures to prevent freezing of water and leakage of gas when leaving the unit unused for long periods of time p 19 Do not use parts other than those specified for this equipment If it is snowing check the...

Page 7: ...it 9 Remote Controller 10 Initial Operation 11 How to Use Setting and Using the Water Heater 12 Flow Meter Alarm 14 Muting the Remote Controller 16 Adjusting the Maximum Output Temperature 17 Preventing Damage from Freezing 18 Regular Maintenance 21 Troubleshooting 23 Follow up Service 28 Specifications 30 Contents ...

Page 8: ...he drain line as it must always be allowed to freely flow Note The condensate discharged is acidic with a pH level of approximately 2 3 A condensate neutralizer may be required by local code prior to disposal Drain pipe Installation example Overview of Condensing Tankless Gas Water Heater This water heater is a high efficiency fully condensing appliance Unlike a traditional tankless water heater a...

Page 9: ...llation configuration may be slightly different Main Unit Front Cover Water Supply Valve Water Drain Valve with Water Filter Inside Water Inlet p 22 Pressure Relief Valve General Parts 1 Intake Pipe Flue Collar Gas Supply Valve Drain Pipe Discharges the condensate NRC1111 OD Outdoor Wall Mounted Power Vented Model Exhaust Vent ...

Page 10: ... F Flow Meter Setting The display will flash after hitting the flow meter alarm set button p 15 Error Code When this indicator is lit the hot water temperature can be set p 12 What is actually displayed depends on how the water heater is set A number will flash if a failure occurs p 27 Priority Indicator Burner On Indicator When burning the indicator is lit p 13 and 15 Note As shipped from the fac...

Page 11: ... preparations Follow steps 1 through 4 1 Open the water supply valve Open a hot water fixture to confirm that water is available and then close the fixture again 3 Open the gas supply valve Hot water fixture 2 Turn on the power CLOSED 4 OPEN Do not touch with wet hands Ex NRC1111 DV ...

Page 12: ...urns instantly or death from scalding Children disabled and elderly are at the highest risk of being scalded Feel water temperature before bathing or showering Temperature limiting valves are available ask professional person When setting the unit to 125 F 55 C 131 F or higher the temperature display will flash for 10 seconds and emit a tone as a high temperature warning Take caution when using th...

Page 13: ... C 122 F or less Consult local codes for minimum operating temperatures 100 105 110 115 120 125 130 135 140 Shower hot water supply etc Washing dishes etc High temperature The maximum output temperature can be set using the remote controller p 17 C F The temperature settings below are examples The temperature setting necessary depends on the usage the length of piping and the time of year Initial ...

Page 14: ...g used to indicate when a tub is full If any hot water is being used besides what is going into the tub the alarm will sound before the tub is full If there was water in the tub before the fill began or if the water is not shut off manually when the alarm sounds the tub may overflow If there was water in the tub before the fill began the temperature in the tub after it is full may be different fro...

Page 15: ... will not sound if it is set for 990 gallon On Flow meter setting will be flashing ex 45 gallon Off The alarm will sound when the set level has been reached Stop the water The level can only be adjusted while the indicator is flashing After ten seconds the remote will again display the temperature On Flow meter setting will be flashing ex 180L Off Initial factory setting 110 F or 40 C 104 F Water ...

Page 16: ...uting the Remote Controller Initial factory setting is with sound Sound Muted No sound after 5 sec 1 Hold the Power On Off Button for five seconds Tone sounds after 5 sec The flow meter alarm cannot be muted The high temperature warning tone when setting the unit to 125 F 55 C 131 F or higher will not emit a sound when muted ...

Page 17: ...wn The upper limit of the hot water supply temperature can be changed to For Fahrenheit F 100 F 105 F 110 F 115 F 120 F 125 F 130 F 135 F or 140 F For Celsius C 37 C 38 C 39 C 40 C 41 C 42 C 43 C 44 C 45 C 46 C 47 C 48 C 50 C 55 C or 60 C 2 Turn off the power Off 1 Set the Power button to ON when continuing to use the unit as is Otherwise let the unit sit for 30 sec 4 Tone sounds after 2 sec ...

Page 18: ... not advisable to run water through the unit when it is OFF p 6 but in this case freeze prevention is more important Remember to set mixing valves and fixtures to their original levels before using the unit again to prevent scalding If there is still a risk that the unit will freeze drain the unit as shown on the next page Preventing Damage from Freezing 1 Freezing is prevented within the device a...

Page 19: ...drain two minutes for each unit An 11 Error Code may appear on the remote controller This is not a malfunction of the unit Do not turn Power ON OFF Button OFF Manual Draining Close the water supply valve and disconnect the electrical power supplied to the unit 3 4 5When the water is completely drained replace all drain plugs and close the hot water fixtures 5 Open all drain plugs and drain the wat...

Page 20: ...begin to discharge from the drain pipe within 15 minutes of use However depending on the season and or installation site conditions it may take longer If water does not appear at the end of the drain line a qualified service technician must clean the condensate line After the water heater has been out of use for a long time make sure that you fill the condensate trap with water This is to prevent ...

Page 21: ...o prevent burns or scalding turn off the power button and wait until the equipment cools before performing maintenance CAUTION Check For abnormal sounds during operation For abnormalities in external appearance discoloration or flaws For water leaks from the equipment and piping For dust and soot in the exhaust vent or exhaust vent terminal Check Check Check Check For blockage at the drain pipe di...

Page 22: ...ter drain valve with water filter with a brush under running water 6 Replace the water drain valve with water filter and close the drain plugs Take care not to lose the packing 7 Close all hot water fixtures 8 Open the water supply valve and check that water does not leak from the drain plugs or water drain valve with water filter Optional Maintenance Isolation valves may be purchased as an access...

Page 23: ... than the temperature set on the remote controller If only a small amount of hot water is demanded it is possible for the temperature to be higher than the temperature set on the remote controller The water is too hot Have you allowed enough time for the cold water in the pipes to drain out Water takes time to become hot when turning the hot water fixture No water is available when a fixture is op...

Page 24: ...sed for other fixtures while filling the bath tub the tub will not fill as much If there is water in the tub already or when filling is stopped and restarted the tub will fill more The flow meter alarm does not sound even when filled to the set amount The flow meter alarm is set to sound when hot water is continuously discharged for the set volume of water If mixing valves are used or if cold wate...

Page 25: ...y the gas meter Can other gas devices such as stoves be used For LP Is there enough gas in the tank Can other gas devices such as stoves be used This is normal The white smoke is actually steam White smoke comes out of the exhaust vent on a cold day The hot water is turbid This is harmless Small bubbles appear as the air in the water is heated and depressurized rapidly to atmospheric pressure Othe...

Page 26: ... mg L or less Iron 0 3 mg L or less Manganese 0 05 mg L or less pH 6 5 8 5 Total Dissolved Solids 500 mg L or less Zinc 5 mg L or less Sulfate ion 250 mg L or less Residual chlorine 4 mg L or less Maximum limit suggested by Noritz The water appears blue The bath tub wash basin has turned blue Coloration to a blue color may be noticed from small traces of copper ion contained in the water and fat f...

Page 27: ...ther Error Code Cause Action Ignition error Check whether the gas valve is open Press the power button to turn the unit off open a hot water fixture and turn the unit back on If the flashing number doesn t return the problem is solved Flashing Remote Controller Check to see if the condensate drain pipe is clogged or frozen p 8 Contact the installer or Noritz America Technical Support for assistanc...

Page 28: ...y be rejected if the water heater is installed in a location where working on the unit may be dangerous Contact a plumber We will need to know The Model check the rating plate See p 4 for the location of the label Date of purchase see the warranty Details of problem flashing error codes etc in much detail as possible Your name address and telephone number Desired date of visit Noritz will stock re...

Page 29: ...l be installed by a qualified service agency in accordance with the manufacturer s instructions and all applicable codes and requirements of the authority having jurisdiction The information in the instructions must be followed to minimize the risk of fire or explosion or to prevent property damage personal injury or death The qualified service agency is responsible for the proper installation of ...

Page 30: ... Controller Remote Controller Cord Anchoring Screws Specifications Performance Item Model Name Type Ignition Operating Pressure Minimum Flow Rate Dimensions Height x Width x Depth Weight Water Holding Capacity Accessories Installation Air Supply Exhaust Connection Sizes Power Supply Materials Water Inlet Hot Water Outlet Gas Inlet Condensate Drain Safety Devices Item Gas Consumption Maximum Hot Wa...

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