Noritz NRC1111-DV Owner's Manual
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Noritz NRC1111-DV Owner's Manual

Condensing tankless gas water heater
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CONDENSING TANKLESS GAS WATER HEATER
Owner's Guide
FOR USE IN RESIDENTIAL OR MANUFACTURED HOME APPLICATIONS.
WARNING
- 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.
CERTIFIED
Low NOx Approved
by SCAQMD
14 ng/J or 20 ppm
(Natural Gas Only)
SBA8723
Rev. 10/11
Models : NRC1111-DV
If the information in this manual is not followed exactly, a fire or explosion
may result causing property damage, personal injury, or death.
Thank you for purchasing this Noritz Tankless Gas Water Heater.
Before using, please:
Read this manual completely for operation instructions.
R
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.
When applicable, installation must conform with the Manufactured Home
Construction and Safety Standard, Title 24 CFR, Part 3280 or the Canadian
Standard CAN/CSA-Z240 MH Mobile Homes, Series M86.
Noritz America reserves the right to discontinue, or change at any time, the
designs and/or specifications of its products without notice.
NORITZ America Corporation
NRC1111-OD
*SBA8723*

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Summary of Contents for Noritz NRC1111-DV

  • Page 1 Construction and Safety Standard, Title 24 CFR, Part 3280 or the Canadian Standard CAN/CSA-Z240 MH Mobile Homes, Series M86. Noritz America reserves the right to discontinue, or change at any time, the Low NOx Approved designs and/or specifications of its products without notice.

  • Page 2: Important Safety Information

    Important Safety Information-1 To prevent damage to property and injury to the user, the icons shown below will be used to warn of varying levels of danger. Every indication is critical to the safe operation of the water heater and must be understood and observed. Potential dangers from accidents during installation and use are divided into the following four categories.
  • Page 3 (Continued) [When supplying combustion air [NRC1111-DV] from the indoors] Do not use the water heater Air supply vent if the intake/exhaust pipe Towel Check whether or not the air Prohibited Be sure is displaced, has holes, is to do. supply vent is blocked with clogged or is corroded. dust, trash, a towel, or the like. Blocking the opening may result [NRC1111-OD] in incomplete combustion. Do Not Install Indoors. After the water heater has been out of Prohibited This will cause carbon...
  • Page 4 Unit flammable vapors and liquids in the vicinity of this or any other appliance. Prohibited Carbon monoxide poisoning or fire may Do not place or use a spray can near occur as a result. the water heater or the exhaust vent terminal. [NRC1111-DV] Prohibited Do not place outdoors. Be sure the gas/power Prohibited Rain may enter the unit supplied matches the or the burner fire may be gas on the rating plate. blown by the wind, causing...
  • Page 5 Do not install in locations where excessive dust or debris will be Be sure in the air. to do. Prohibited Do not use the water heater for Do not touch the exhaust vent pipe other than hot water supply, shower and exhaust vent terminal during and bath. Prohibited or immediately after operation of Don’t the water heater. touch. Do not use a broken or modified power cord. Do not bind, bend or stretch power cords. [NRC1111-DV] [NRC1111-OD] Do not scratch, modify, or subject them to Prohibited impact or force. To prevent burns or scalding, turn off the power button and wait until the equipment cools before performing maintenance. Be sure Do not use condensate, discharged to do. from the drain pipe, for drinking or Do not turn off the water heater for consumption by animals. Prohibited while someone is bathing. Prohibited...
  • Page 6 Important Safety Information CAUTION Do not drink water that has been inside the This unit is only approved for installation unit for an extended period of time. Do not up to 4500 ft. (1350m) above sea level. drink the first use of hot water from the For installations at higher elevations, contact Noritz unit in the morning. America for Instructions. Clean the filter on the water inlet as Do not disassemble the remote controller. frequently as required by the quality of your local water. Do not use benzene, oil or fat detergents to clean the remote controller. Keep the area around the unit clean. This may cause deformation. If boxes, weeds, cobwebs, cockroaches etc. are in Do not get the remote controller wet. the vicinity of the unit, damage or fire can result.

  • Page 7: Table Of Contents

    Contents Important Safety Information ............... 2 Contents......................7 Overview of Condensing Tankless Gas Water Heater ......8 General Parts Main Unit ....................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 ........

  • Page 8: Overview Of Condensing Tankless Gas Water Heater

    Overview of Condensing Tankless Gas Water Heater This water heater is a high efficiency, fully condensing appliance. Unlike a traditional tankless water heater, a condensing type captures heat from the exhaust gas and uses it to preheat the incoming cold water as it passes through the secondary heat exchanger as illustrated below. Condensing Conventional Exhaust...

  • Page 9: General Parts

    General Parts -1 Main Unit [NRC1111-DV] Indoor Wall Mounted, Power Vent/Sealed Model Intake Pipe Flue Collar Front Cover Water Drain Valve (with Water Filter) (Inside Water Inlet) p.22) Pressure Relief Valve Water Supply Valve Gas Supply Valve Drain Pipe Discharges the condensate. [NRC1111-OD] Outdoor Wall Mounted, Power Vented Model Exhaust Vent * The above illustration shows an example of installation. The exact installation configuration may be slightly different.

  • Page 10: Remote Controller

    General Parts -2 Remote Controller (RC-7651M) What is actually displayed depends on how the water heater is set. Burner On Indicator Setting Buttons When burning, the For setting the hot water temperature, indicator is lit. ( p.13 and 15) the flow meter alarm, and other settings. Priority Indicator When this indicator is lit, the hot water temperature p.12) can be set.

  • Page 11: Initial Operation

    Follow steps Open the water supply valve. OPEN CLOSED Open a hot water fixture to confirm that water is available, and then close the fixture again. Hot water fixture Open the gas supply valve. Turn on the power. Do not touch with wet hands. (Ex. NRC1111-DV)

  • Page 12: How To Use

    How to Use Setting and Using the Water Heater (Starting with the Power Off) Press the Power On/Off Button. The temperature will be displayed on the remote control thermostat. Previous set temperature (Ex.: 110°F) DANGER To prevent scalding: High Temperature Hot Water Heater temperatures over 125°F (52°C) can cause severe burns instantly or death from scalding. • Children, disabled and elderly are at the highest risk of being scalded.
  • Page 13 Set temperature. Turn off the hot Turn on hot water. water. Always check the temperature setting before use. Cold Check the indicator lights. Water temperature When using °F mode: °F : The maximum output temperature can be The temperature settings below are examples. The temperature setting set using the remote controller. ( p.17) necessary depends on the usage, the length of piping and the time of year.

  • Page 14: Flow Meter Alarm

    How to Use Flow Meter Alarm If the flow meter alarm is being 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. •...

  • Page 15: Water Temperature

    Water Temperature An alarm will sound for ten °F : The temperatures settings below are only examples. The seconds when the flow temperature setting necessary will depend on the usage, the length of piping and the time of year. reaches the set level. Warm Warmer °C (°F) :...

  • Page 16: Muting The Remote Controller

    How to Use Muting the Remote Controller The remote controller will emit a sound when any button is pushed. This sound can be muted if it is desired. * Initial factory setting is with sound Hold the Power On/Off Button for five seconds. Muted Sound No sound...

  • Page 17: Adjusting The Maximum Output Temperature

    How to Use Adjusting the Maximum Output Temperature Change the Turn off the Press and hold the flow temperature using power. meter alarm set button until the setting buttons. a sound is heard (2 sec.). Tone sounds after 2 sec. Down The upper limit of the hot-water supply temperature can be changed to...

  • Page 18: Preventing Damage From Freezing

    -30°F (-35°C) for NRC1111-DV or -4°F (-20°C) for NRC1111-OD. - For model NRC1111-DV, when supplying combustion air from the indoors, the room temperature must be greater than 32°F (0°C) to prevent freezing and the room inside must not have negative pressure.
  • Page 19 Close the gas valve and disconnect the electrical power supplied to the unit. Do not touch with wet hands. Drain Plugs (Ex. NRC1111-DV) Each drain plug mignt not be visible if insulation is installed around the piping.

  • Page 20: Turning The Unit Back On

    Preventing Damage from Freezing-2 Turning the Unit Back On 1. Check that all drain plugs are inserted. 2. Check that all hot water fixtures are closed. 3. Follow the procedure on p.11 “Initial operation”, steps 1 through 4. 4. Make sure that the area around the appliance is well ventilated; open a window or a door if necessary. Then, operate the unit and verify that condensate is coming out of the drain pipe.

  • Page 21: Regular Maintenance

    For blockage at the equipment and piping. Check drain pipe discharge. (Ex. NRC1111-DV) Periodic Maintenance Equipment Wipe the outside surface with a wet cloth, then dry the surface. Use a neutral detergent to clean any stains. If an external condensate neutralizer is installed, periodic replacement of the neutralizing agent will be required.

  • Page 22: Periodic Maintenance

    They allow for full diagnostic testing and easy flushing of the system. * The kit includes two full port isolation valves and a pressure relief valve for the hot side. Hot Water Contact Noritz for more information. Service Valve Pressure Relief Valve Cold Water Service Valve...

  • Page 23: Troubleshooting

    Troubleshooting-1 Initial Operation • Check for reversed plumbing or crossed pipes. Unit does not attempt to ignite when water is running. • Check the water drain valve filter. ( p.22) Unit attempts to ignite but fails • Reset unit and try again. There may be air in the gas line. •...

  • Page 24: Amount Of Hot Water

    Troubleshooting-2 (Continued) • The unit will not heat the water if the flow rate is less than The water is cold when only a 0.5 gallons (2L) per minute. single fixture is open. Open the fixture more or open other fixtures so that a greater flow passes through the unit, and the unit should begin heating again.
  • Page 25 Remote Controller The light on the power button does • Has there been a power failure? not come on. • Is the power connected properly? The water temperature changes • The temperature setting and the flow meter alarm setting after a power failure or when the may both need to be reset after a power outage.

  • Page 26: Water Quality

    Source: EPA National Secondary Drinking Water Total Dissolved Solids : 500 mg/L or less Regulations (40 CFR Part 143.3) 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.

  • Page 27: Error Code Cause Action

    Contact the installer or Noritz America Technical Support for assistance. [When supplying combustion Clean the air supply vent.( p.21) If the display continues, contact the nearest Noritz air from the indoors] agent. The air supply vent may be clogged. Abnormal combustion, Have a professional check the gas supply pressure.

  • Page 28: Follow-Up Service

    Period of Time for Stocking Repair Parts Noritz will stock repair and maintenance parts for this unit for the time period from the date of the original installation as follows: twelve (12) years for the heat exchanger and ten (10) years for remaining parts.

  • Page 29: Gas Conversion

    This work must be performed by either Noritz or a qualified service agency and will be charged for even during the warranty period. The qualified installer will also be responsible for purchasing the gas conversion kit directly from the manufacturer.

  • Page 30: Specifications

    • Specifications may be changed without prior notice. • The capacity may differ slightly, depending on the water pressure, water supply, piping conditions, and water temperature. Specifications Item Specification Model Name NRC1111-DV NRC1111-OD Type Installation Indoor Wall Mounted Outdoor Wall Mounted Air Supply/Exhaust...

This manual is also suitable for:

Nrc1111-odNcc199dvNcc199od

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