Noritz NRCP1112-DV Owner'S Manual Download Page 2

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Owner’s Guide – Table of Contents

Chapter 1

Product Overview

Operating Flow chart

Chapter 2

Safety Regulations.

Safety Precautions

Before Operation

When in Operation

Important Safety Information

Chapter 3

Unit Operation

Initial 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. How to check the ‘Error History’

5. How to check the ‘Running History’

6. Setting the ‘Unit’

7. Recirculation Timer Setup. (Recirculation Mode)

Recirculation _Auto Mode

Recirculation_Program Mode

Recirculation Initialization

8. Setting the ‘Recirculation System’

External or Internal Setting

Recirculation water temperature Setting

9. Preventing Damage form Freezing-1

10. Preventing Damage form Freezing-2

Chapter 4

Maintenance

1. General Maintenance

2. Cleaning the Water Heater

3. Flushing the Water Heater

4. Checking for Error Conditions

Chapter 5

Troubleshooting

Troubleshooting

Chapter 6

Follow-up Service

Follow-up Service

Memo

Summary of Contents for NRCP1112-DV

Page 1: ...formation in these instructions is not followed exactly a fire or explosion may result causing property damage personal injury or death Models 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...

Page 2: ...History 19 5 How to check the Running History 20 6 Setting the Unit 21 7 Recirculation Timer Setup Recirculation Mode 22 Recirculation _Auto Mode 24 Recirculation_Program Mode 25 Recirculation Initialization 27 8 Setting the Recirculation System 28 External or Internal Setting 29 Recirculation water temperature Setting 30 9 Preventing Damage form Freezing 1 32 10 Preventing Damage form Freezing 2 ...

Page 3: ...er as it passes through the secondary heat exchanger as illustrated below The recirculation pipe must be installed in the field in order to apply the External Recirculation Mode This mode allows the water heater recirculation pipes to be warmed up and serving as the freeze protection function This mode is available without a recirculation pipe installed The water heater is preheated and protected ...

Page 4: ...NG FOR YOUR SAFETY READ BEFORE OPERATING If you do not follow these instructions exactly a fire or explosion could result causing property damage personal injury or loss of life 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 burner by hand B BEFORE OPERATING smell all around the appliance area for gas Be s...

Page 5: ... products such as gasoline solvents or adhesives in the same room or area near the appliance Keep flammable products Far away from Water Heater In approved containers Tightly closed Out of children s reach Vapors Cannot be seen Vapors are heavier than air Go a long way on the floor Can be carried from other rooms to the main burner by air currents Do not install the appliance where flammable produ...

Page 6: ...ondensate trap control replacement etc PRODUCTS TO AVOID AREAS LIKELY TO HAVE CONTAMINANTS Spray cans containing fluorocarbons Dry cleaning laundry areas and establishments Permanent wave solutions Swimming pools Chlorinated waxes cleaners Metal fabrication plants Chlorine based swimming pool chemicals Beauty shops Calcium chloride used for thawing Refrigeration repair shops Sodium chloride used f...

Page 7: ...ype of gas is indicated on the rating plate on side of the water heater 3 Check the gas valve Please confirm the gas valve connected to the water heater it must be closed during installation 4 Check the water supply valve Please leave the appliance water supply valve open at all times it must be closed during installation 120V 60Hz open Before Operation 2 Check the electricity being supplied Pleas...

Page 8: ...mbustible inflammable materials such as papers Do not hang clothes on the exhaust vent Otherwise fire may break out CAUTION Pull out the power plug from the receptacle if light ning strikes Lightning can damage the water heater Pull out power cord plug if lightning strikes for your safety Burn Protection Be cautious when opening the hot water tap The water may be very hot Especially children disab...

Page 9: ...y electrical switch do not use any phone in your building 3 Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions 4 If you cannot reach your gas supplier call the fire department Gas leakage test Gas supply line must be inspected regularly If air bubbles appear in soap water test the gas is leaking out Close the gas supply valve and call your gas supplie...

Page 10: ... When in Operation Chapter 2 Safety Regulations Do not shut off the Water Heater When you leave home for a long time do not shut off the Water Heater The Water Heater has a freeze protection function The freeze protection feature will not work if electrical power gas or water is disconnected Do not wipe the appliance or control panel with wet cloth Otherwise electric shock may occur or internal pa...

Page 11: ...y Check ignition during use and extinction after use Do not run water through the unit when unit is not on When discharging hot water make sure the unit is ON If water is run through the unit with the unit OFF water may condense inside the unit and cause incomplete combustion or damage to the internal electrical components Preventing damage from freezing Damage can occur from frozen water within t...

Page 12: ...Gas Supply Full port gas valve Pressure Relief Valve Recirculation water line Hot water line Cold water line 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 4 Turn on the power on the front panel Do not touch with wet hands ...

Page 13: ...uttons Functionality Press Press and Hold more than 5 seconds Power ON OFF Button Control Panel Power ON OFF N A Function Button Cancel Return Status display mode at power ON Installer mode at power OFF Hot Water Temperature Button Hot water temperature setting 100 F 120 F 38 C 49 C with 5 F interval High temperature setting 125 F 140 F 51 5 C 60 C with 5 F interval Recirculation Timer Button Time...

Page 14: ... TIME AM 1 39 CURRENT DAY MONDAY TIMER SETTING MONDAY 5 00 6 00 18 00 19 30 DESIRED HOT WATER TEMPERATURE 120 F Pump Operating Icon Example External Recirculation Icon Status Display High Temperature Icon Temperature Unit Lock Mode Communication Status Combustion Icon Control Panel LCD Interface LCD has a backlight that will illuminate When a user action is detected a button is pressed Turns off w...

Page 15: ...setting 1 Setting year 2014 Set the Year by turning the dial button Only the flashing number can be changed Set the month by turning the dial button Only the flashing number can be changed Customer can set the current date time and day in L TA mode Press and hold Function Button for approxi mately 5 Seconds to enter User mode Power must be ON on the Display Enter the clock Setting mode by pressing...

Page 16: ...g minute 20 4 Setting day of the week Friday Set the day by turning the dial button Only the flashing number can be changed Set the hour by turning the dial button Only the flashing number can be changed Set the minute by turning the dial button Only the flashing number can be changed Set the day of the week by turning the dial button Only the flashing number can be changed Press Function Button t...

Page 17: ...10 115 120 125 130 135 140 Default 38 40 5 43 5 46 49 51 5 54 5 57 60 The operation of the high temperature hot water can be set separately High temperature range Press the Dial Button to store the setting General temperature range 2 Setting Hot Water Temperature The temperature settings below are examples The temperature setting necessary depends on the usage the length of piping and the time of ...

Page 18: ... History PLUG bnHr igCY PPHr K FC Gallon or Liter Unit GAL Lit L TA Timer Adjustment Current Timer setting Function can be checked and set in User mode C TL I EH J RH K FC L TA User Mode confirmation function 2 Press and hold Function Button for ap proximately 5 Seconds to enter User mode 1 Press the Power Button ON 3 A GA is displayed on the Display screen From here turn the dial button to start ...

Page 19: ...H Refer to page 18 User mode setting method and set to User mode Function can be checked by turning the dial button Refer to page 18 User Mode setting method and set to User mode Function can be checked by turning the dial button 1 Select the C TL mode by turning the Dial Button in User Mode 2 Lock Mode is started and oFF character is flashing when the Dial Button pressed in C TL mode 3 Select the...

Page 20: ...1000 4 307 000 times 3 Turn the Dial Button clockwise to be changed to bhHr mode 4 Turn the Dial Button clockwise to be changed to bnCY mode 5 Turn the Dial Button clockwise to be changed to PPHr mode 6 Press the Dial Button to return to User mode Running History mode Screen Display Operation Description PLUG Power on time EX 102 8 102 8 X 1000 102 800 hour bnHR Combustion time EX 31 07 31 07 X 10...

Page 21: ...ess Dial Button And return to User mode 2 If Dial Button is pressed in K FC GAL character is flashing If flashing character is GAL units dis played on the display screen are GPM and Fahrenheit Screen Display Operation Description Unit Gallon Fahrenheit All of the units displayed on the display screen are GPM F Unit Liter Celsius All of the units displayed on the display screen are LPM C 6 Setting ...

Page 22: ...nction Button to exit Installer Mode Default times are 5 8 am and 5 11 pm for recirculation timer mode Customer who accept the default times do not need to do Recirculation Timer setting in the following section Activation of the Recirculation Timer icon on the main screen indicates feature activation 2 oFF character is flashing when the Dial Button is pressed in 1 RC mode Default setting is oFF a...

Page 23: ... Time Refer to the 25 26 page for details STEP 3 Recirculation Timer function initialization setting Prog or Auto Recirculation timer function initialization Refer to the 27 page for details How to use Control Panel User mode Chapter 3 Unit Operation Table for Recirculation Timer setting Recirculation Timer function has three settings Act SEt cLc Act mode is to set the Recirculation Timer Set mode...

Page 24: ...ton clockwise to set the program Then press the Dial Button to set 4 A Pre reserved day and time are displayed when program function is selected Auto Function If flame is detected by customer usage that time is stored The following day the water pattern from the previous day is used to control the pre heat and provide prompt hot water 4 B Recirculation function is operated from next day after auto...

Page 25: ... press Dial Button to enter the Setting mode 3 1 Set the day in Prog mode by turning the Dial Button 3 3 Turn the Dial Button until next desired day appears on display screen Repeat this step for more days 3 2 If desired day appears on the display screen press the Dial Button to select and store 3 4 Press the Dial Button to store when desired days are displayed Press and hold Dial Button for appro...

Page 26: ...n to return to initial mode TIP for the Recirculation Timer Press the dial button less than 1 second Selecting a start time and an end time Turn the dial button selecting a number of times Press the dial button more than 2 seconds storing the reservation time setting 4 4 Press the Dial Button for approximately 2 Seconds to store ex Setting time 4 30 6 00 12 00 14 00 17 00 17 30 4 3 Turn the Dial B...

Page 27: ...etting when the Prog character is flashing on the display screen 4A 2 Press the Recirculation Timer Button to return to the previous step after setting completion 4B 1 Turn the Dial Button to Auto flashes Then press the Dial Button to initialize the auto recirculation setting 4B 2 Press the dial button to complete the initialization setting for initializing the auto reservation setting when the Au...

Page 28: ...sure hot water is remove the word instantly Recirculation timer setting can be changed to meet customer s desired schedule Auto self learning mode function can be selected by customer s need Pressure Relief Valve Air Gas Mixing Primary heat exchanger Secondary heat exchanger Burner Recirculation Line Expansion Tank Install according to local code Recirculation Pump Condensate Hose Gas Hot Water Ou...

Page 29: ...ion function Pressure Relief Valve Air Gas Mixing Primary heat exchanger Secondary heat exchanger Burner Recirculation Line Expansion Tank Install according to local code Recirculation Pump Condensate Hose Gas Hot Water Outlet Cold Water Inlet Internal recirculation mode can be used even with external recirculation pipe installed if user wants to save energy cost Must set water heater to internal ...

Page 30: ...dial button clockwise to select on in order to activate the recirculation function 5 Press the dial button to store the current setting and return back to Installer mode 6 Locate 2 RM by turning the dial button clockwise by one click 7 Press the dial button when the flashing 2 RM 8 Turn the dial button to select Etnl External Recirculation Mode or Itnl Internal Recirculation Mode Screen Display Op...

Page 31: ...0 C it will stop After combustion mode is stopped the pump will continue for 3 minutes If the water heater is turned on for recirculation mode pre heating mode or hot water use mode the freeze protection mode will automatically stop With the recirculation operation set hot water will be automatically circulated in the hot water pipes If the recirculation piping is installed you can select the exte...

Page 32: ...r fixtures faucets for more than 2 minute and close If multiple units are being used drain two minutes for each unit An 11 Error Code may appear on the control panel This is not a malfunction of the unit Do not turn Power ON OFF Button OFF 3 Close the water supply valve and disconnect the electrical power supplied to the unit 4 Fully open all hot water fixtures faucets 5 Open all drain plugs and d...

Page 33: ...ondensate will 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...

Page 34: ...arly Check vent terminal bird screen If you encounter a problem of combustion specifications visu ally inspect the terminal screen And then replace it with spare parts or clean the screens Maintenance procedures Check installation location To prevent potential severe personal injury death or substan tial property damage remove all contaminated materials If contaminants are found Remove products im...

Page 35: ...ll the filter out of the air intake adapter 6 Clean it with a toothbrush and clean running water 7 Dry the filter completely Then reinsert the filter into the plastic assembly and tighten the filter screen screw 8 Replace the front cover of the water heater cabinet Reconnect power supply to the water heater 9 Press the Power button on the control panel to turn on the water heater Maintaining the W...

Page 36: ...then turn off the gas valve 3 Close water supply valve on the inlet to the appliance 4 Open the hot water faucets completely Maintaining the Water Heater Chapter 4 Maintenance 6 To refill the water heater follow the steps of Draining the Water Heater in reverse Cold Water Filter 5 Remove the cold water inlet filter and recirculation water filter And then clean it with a toothbrush and clean runnin...

Page 37: ...ater Maintenance procedures Annually Check piping gas and water Visually inspect for leaks around internal water piping Also inspect external water piping circulators pressure relief valve and fittings Immediately call a qualified service technician to repair any leaks Leaks must be fixed by a qualified service technician immediately Failure to comply with this instruction could result in severe p...

Page 38: ...heck condition of the burner assembly If the problem persists replace the circuit board Er 44 Recirculation Abnormality Verify recirculation loop length is within specification Check return line filter Check the pump operation Er 45 Water leakage is detected in water heater Press the Power button to clear the Error Code If error code still appears on the display then check the following Check for ...

Page 39: ...e the filter in the cold water supply line is not clogged with debris Make sure the water heater is connected to the correct gas supply The Blower Continues to Oper ate After Combustion Stops This is normal The blower operates for one minute after combustion has stopped to purge remaining exhaust gas from the flue Cannot Change the Hot Water Mode Setpoint above 120 This is a safety device to preve...

Page 40: ...arately Be sure that the plumber date of purchase and other necessary items are filled in Read the content carefully and keep the warranty card in a safe place For repairs after the warranty period there will be a charge on any service and service will only be performed if the unit is deemed repairable Period of Time for Stocking Repair Parts Noritz will stock repair and maintenance parts for this...

Page 41: ...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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