Noritz NRCP1112-DV Owner's Manual
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Noritz NRCP1112-DV Owner's Manual

Condensing tankless gas water heater
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CONDENSING TANKLESS GAS WATER HEATER
Thank you for purchasing this Noritz Tankless Gas Water Heater.
Before using, please:
Read this guide completely for operation instructions.
Completely fill out the warranty registration card (included separately) and mail the detachable portion to Noritz
America Corporation. Keep this guide (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.
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 inflammable 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.
Owner's Guide
Models
NRCP1112-DV / NRCP982-DV (Eco TOUGH)
• Natural Gas ( NG ) / Liquid Propane Gas ( LP )

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Summary of Contents for Noritz NRCP1112-DV

  • Page 1 CONDENSING TANKLESS GAS WATER HEATER Owner's Guide Models NRCP1112-DV / NRCP982-DV (Eco TOUGH) • Natural Gas ( NG ) / Liquid Propane Gas ( LP ) Thank you for purchasing this Noritz Tankless Gas Water Heater. Before using, please: Read this guide completely for operation instructions. Completely fill out the warranty registration card (included separately) and mail the detachable portion to Noritz America Corporation. Keep this guide (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. 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 inflammable 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.

  • Page 2: Table Of Contents

    Owner’s Guide – Table of Contents Chapter 1 Operating Flow chart Product Overview Chapter 2 Safety Precautions Safety Regulations. Before Operation When in Operation Important Safety Information Chapter 3 Initial Operation Unit Operation Control Panel Interface Control Panel LCD Interface How to use Control Panel 1. Clock Adjustment 2. Setting Hot Water Temperature 3. Locking the Control Panel 4.

  • Page 3: Operating Flow Chart

    Chapter 1. – Product Overview Operating Flow Chart Operating Flow Chart Standard mode This water heater is a highly efficient, fully condensing appliance. Unlike a traditional tankless water heater, a condensing type captures heat Exhaust About 120 ℉ (49 ℃ ) from the exhaust gas and uses it to preheat the incoming cold water as it passes through the secondary heat exchanger as illustrated below.

  • Page 4: Safety Precautions

    Installation and Owner’s Guide and on the Water BEFORE OPERATING Heater before installation, operation, or service. Noritz cannot anticipate every circumstance that might in- If you do not follow these instructions exactly, a fire volve a potential hazard and our warnings are, therefore, not or explosion could result causing property damage, all-inclusive.
  • Page 5 DANGER Use this Water Heater at your own risk. The outlet temperature of the Noritz Water Heater is fac- tory preset to 120°F (49°C). The temperature can only be changed by using the control panel. Hot water temperature over 125°F (52°C) can cause severe burns instantly or death from scalding.
  • Page 6 Do not power up the unit unless the gas and water and understand the Operating Information in this supply valves are fully opened. Make sure that fresh guide before operating the Noritz Water Heater. air intake flue and exhaust gas flue are opened and functional.

  • Page 7: Before Operation

    Chapter 2. – Safety Regulations Before Operation Before Operation CAUTION 4. Check the water supply valve. 1. Check the gas being used. Please leave the appliance water supply valve open at all times When the Water Heater is used or moved for the first time, user (it must be closed during installation) must check whether the type of gas being supplied matches the specific gas type for the appliance.
  • Page 8 Chapter 2. – Safety Regulations Before Operation Before Operation WARNING CAUTION Pull out the power plug from the receptacle if light- Do not store flammable material in the appliance ning strikes. room. Lightning can damage the water heater. Pull out power cord Do not store portable gas container, thinner, oil, or other plug if lightning strikes for your safety. flammable materials in the room. Otherwise, fire may break out. Do not place combustible items, such as newspapers Burn Protection or laundry, near the appliance or venting pipe.

  • Page 9: When In Operation

    Chapter 2. – Safety Regulations When in Operation When in Operation A fter repair of gas pipeline or gas regulator replace- Gas leakage test ment, call service agent for inspection before start- Gas supply line must be inspected regularly. (If air bubbles appear in soap water test, the gas is leaking ing it up. out. Close the gas supply valve and call your gas supplier for inspection) Ventilation during gas leakage If exhaust gas enters room, it could cause poisoning by carbon...
  • Page 10 Chapter 2. – Safety Regulations When in Operation When in Operation CAUTION Do not shut off the Water Heater. Do not disassemble the Water Heater. When you leave home for a long time, do not shut off the Water Service must be performed by a qualified intaller, service Heater. The Water Heater has a freeze protection function. agency and gas supplier.

  • Page 11: Important Safety Information

    Chapter 2. – Safety Regulations Imortant Safety Indormation Important Safety Information CAUTION Do not drink water that has been inside the unit for an Preventing damage from freezing extended period of time. Do not drink the first use of Damage can occur from frozen water within the device hot water from the unit in the morning. 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. Clean the filter on the water inlet as frequently as required by the quality of your local water. Take necessary measures to prevent freezing of water and leakage of gas when leaving the unit unused for Keep the area around the unit clean. long periods of time. If boxes, weeds, cobwebs, cockroaches etc. are in the vicinity of the unit, damage or fire can result. If it is snowing, check the intake and exhaust vent terminal for blockage.

  • Page 12: Initial Operation

    Chapter 3. – Unit Operation Initial Operation Initial Operation • Before the first use of your water heater, make the following preparations. 1. Open the water pipe valve. 2. Open a hot water fixture/faucet to confirm that water is available, and then close the fixture/faucet again. 3. Open the gas supply valve. Pressure Relief Valve Full port gas valve Gas Supply Hot water line Recirculation water line Cold water line 4. Turn on the power on the front panel. Do not touch with wet hands.

  • Page 13: Control Panel Interface

    Chapter 3. – Unit Operation Control Panel Interface Control Panel Interface Hot Water Temperature Setting Button Display Screen Function Button Indicator (Green) Recirculation Timer Button Power ON / OFF Button For turning the water heater on/off. Enter / Dial Button Functionality Buttons Press Press and Hold (more than 5 seconds) Power ON / OFF Button Control Panel Power ON/OFF Status display mode at power ON Function Button Cancel / Return Installer mode at power OFF Hot water temperature setting...

  • Page 14: Control Panel Lcd Interface

    Chapter 3. – Unit Operation Control Panel LCD Interface Control Panel LCD Interface LCD has a backlight that will illuminate: • When a user action is detected (a button is pressed) • Turns off when no action within approximately 20 seconds. Combustion Icon Communication Status Temperature Unit Lock Mode External Recirculation Icon Hot Water Operating Icon...

  • Page 15: Clock Adjustment

    Chapter 3. – Unit Operation How to use Control Panel 1. Clock Adjustment ►To use the ‘Recirculation Timer Mode’, the device’s internal clock should be adjusted to the current time. Clock settings can be set in the ‘User mode’. [ To enter ‘User Mode’ ] ‘[A:GA]’ is displayed on the display screen. From here, turn the ‘Dial Button’...
  • Page 16 Chapter 3. – Unit Operation How to use Control Panel- User mode 3. Setting day : 25 Press the dial button to store Set the ‘day’ by turning the dial button. (Only the the setting. flashing number can be changed.) 4. Setting day of the week: Friday Set the ‘day of the week’...

  • Page 17: Setting Hot Water Temperature

    Chapter 3. – Unit Operation How to use Control Panel- User mode 2. Setting Hot Water Temperature General temperature range High temperature range The operation of the high temperature hot water can be set °F separately. Default ℃ 40.5 43.5 51.5 54.5 The temperature settings below are examples. The temperature setting necessary depends on the usage, the length of piping and the time of year.
  • Page 18 Chapter 3. – Unit Operation How to use Control Panel- User mode ‘User Mode’ confirmation function Function can be checked and set in ‘User mode’. ([ C: TL ] - [ I: EH ] - [ J: RH ] - [ K: FC ] - [ L:TA ]) Screen Display Operation Description C: TL Temperature Lock mode Lock mode is used(On) or unused(oFF) I: EH Error History View the Error History (E0:XX ~ E9:XX) J: RH...

  • Page 19: Locking The Control Panel

    Chapter 3. – Unit Operation How to use Control Panel- User mode 3. Locking the Control Panel. [C:TL] By locking the control panel, the settings cannot be accidentally changed if a button is pressed by mistake. - Refer to page 18 ‘User Mode’ setting method and set to ‘User mode’. - Function can be checked by turning the dial button. Temperature Lock mode 1.

  • Page 20: How To Check The 'Running History

    Chapter 3. – Unit Operation How to use Control Panel- User mode 5. How to check the ‘Running History’. [J:RH] - Refer to page 18 ‘User mode’ setting method and set to ‘User mode’. - Function can be checked by turning the dial button. Screen Display Operation Description...

  • Page 21: Setting The 'Unit

    Chapter 3. – Unit Operation How to use Control Panel - User mode 6. Setting the ‘Unit’. [K:FC] - Refer to page 18 ‘User mode’ setting method and set to ‘User mode’. - Function can be checked by turning the dial button. Unit Setting mode 1.
  • Page 22 Chapter 3. – Unit Operation How to use Control Panel-Installer mode 7. Programming to use the Recirculation System Note : [1:RC] mode function must be ‘on’ in ‘Installer Mode’ in order to use the ‘Recirculation Timer’. ( ‘Recirculation Timer’ function is only enabled in ‘Recirculation Mode’.) To enter ‘Installer Mode’...
  • Page 23 Chapter 3. – Unit Operation How to use Control Panel - User mode 7. Programming to use the Recirculation System ► Table for ‘Recirculation Timer’ setting. ‘Recirculation Timer’ function has three settings ([Act], [SEt], [cLc]). ‘[Act] mode’ is to set the ‘Recirculation Timer’, ‘[Set] mode’ is to manually set the day and times of a pattern appropriate to the consumer and ‘[cLc]’...
  • Page 24 Chapter 3. – Unit Operation How to use Control Panel - User mode 7. Setting the ‘Recirculation Timer’. (Recirculation _Auto (Self Learning Mode)) 7-1 Set the ‘Recirculation Timer’ in ‘Auto’ mode. - Users can select between ‘Programming mode’ or ‘Auto’ mode Select the (Auto or Prog) in ‘Recirculation Timer’...

  • Page 25: Recirculation_Program Mode

    Chapter 3. – Unit Operation How to use Control Panel - User mode 7. Setting the ‘Recirculation Timer’. (Recirculation_Program Mode) 7-2 Set the ‘Recirculation Timer’ in ‘Prog’ mode. - Customer can directly set the day and time in ‘Recirculation Mode’. 1.
  • Page 26 Chapter 3. – Unit Operation How to use Control Panel - User mode 4-1 Time is stated from 12:00. Turn the ‘Dial Button’ clockwise, time on the display screen is changed in increments of 30 minutes. Setting from 6 to 8 O’clock 4-3 Turn the ‘Dial Button’...

  • Page 27: Recirculation Initialization

    Chapter 3. – Unit Operation How to use Control Panel - User mode 7. Setting the ‘Recirculation Timer’. (Recirculation Initialization) 7-3 Recirculation function initialization setting - Reserved contents can be initialized. 1. Press the ‘Recirculation Timer Button’ when display screen is turned on. 2.

  • Page 28: Setting The 'Recirculation System

    Chapter 3. – Unit Operation How to use Control Panel - User mode 8. Setting the ‘Recirculation System’. Inst. Mode Setting Default Return Mode Description Water Energy (Recirculation Recirculation Recirculation Line Speed Time) Setting Mode Same as other Standard (Default) Good Best Tankless water heater...
  • Page 29 Chapter 3. – Unit Operation How to use Control Panel - User mode 2. External Recirculation mode The recirculation pipe must be installed in the field Air & Gas Mixing in order to apply the ‘External Recirculation Mode’. Burner This mode allows the water heater recirculation pipes to be warmed up and serving as the freeze Primary heat exchanger...
  • Page 30 Chapter 3. – Unit Operation How to use Control Panel - Installer mode 8. Setting the ‘Recirculation System’. 8-1. To set the recirculation type (External or Internal mode) 1. Turn off the power to the control panel. Press and hold the 4.
  • Page 31 Chapter 3. – Unit Operation Preventing Damage form Freezing 9. Preventing Damage form Freezing-1 CAUTION • Damage can occur from freezing 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. 1.

  • Page 32: Preventing Damage Form Freezing-1

    Chapter 3. – Unit Operation Preventing Damage form Freezing 3. If the water heater will not be used for a long period of time, drain the water. CAUTION • To avoid burns, wait until the equipment cools down before draining the water. •...
  • Page 33 10. Preventing Damage form Freezing-2 1. Turning the Unit Back On 1. Check that all drain plugs are inserted. 2. Check that all hot water fixtures/faucets are closed. 3. Follow the procedure on page 12 “Initial operation”, steps 1 through 4. 4.

  • Page 34: General Maintenance

    Chapter 4. – Maintenance Maintaining the Water Heater 1. General Maintenance Regular Maintenance Maintenance procedures [Monthly] - Check vent pipe. - After Water Heater installation is completed, the installation Visually inspect the flue gas vent piping for detecting any manual should be placed in near the water heater. Mainte- signs of blockage, leakage or deterioration of the piping.

  • Page 35: Cleaning The Water Heater

    Chapter 4. – Maintenance Maintaining the Water Heater 2. Cleaning the Water Heater 1. Cleaning Air Intake Filter To properly maintain the water heater, you should check air intake filter every month. If not, you will encounter a problem with combustion specifications.
  • Page 36 Chapter 4. – Maintenance Maintaining the Water Heater - Cleaning Cold Water Inlet Filter / Recirculation Water Filter 1. Place a bucket under the appliance to collect the residual water inside the water heater. 2. Press ‘Power button’ to turn off the electrical power to the water heater. And then turn off the gas valve. 3.

  • Page 37: Flushing The Water Heater

    Chapter 4. – Maintenance Maintaining the Water Heater 3. Flushing the Water Heater - Flushing the Water Heater 8. Disconnect all hoses. Flushing the Heat Exchanger of water heater is a complicated 9. Remove the cold water inlet filter from the water heater and procedure.

  • Page 38: Checking For Error Conditions

    Er:11 Times If Error happens again: Contact the installer or Noritz America Technical Support for assistance. Press the Power button to clear the Error Code. If error code still appears on the display then check the following. • Make sure that the exhaust pipe is free of obstructions.

  • Page 39: Troubleshooting

    0.3 mg/L or less Manganese 0.05 mg/L or less 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.

  • Page 40: Troubleshooting

    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 or end of production as follows: twelve (12) years for the heat exchanger and ten (10) years for...
  • Page 41 Memo...
  • Page 42 Owner's Guide NORITZ AMERICA CO. 11160 Grace Avenue Fountain Valley, CA 92708 Phone : 866 - 766 - 7489...

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Nrcp982-dv

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