Noritz America NRCP1112-DV, NRCP982-DV User Manual
CONDENSING TANKLESS GAS WATER HEATER
Owner's Guide
Models
NRCP 1112-DV / NR CP98 2-DV (E co T OUGH )
• Natural Gas(NG
Thank you for purchasing this Noritz Tankless Gas Water Heater.
Before using, please:
Read this guide completely for operation instructions.
Completely fi ll 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- latest edition and/or CSA B149.1, Natural Gas and Propane Installation Code (NSCNGPIC).
Noritz America reserves the right to discontinue, or change at any time, the designs and/or specifi cations of its
products without notice.
) /
Liquid Propane Gas (LP
c
)
WARNING
If the information in these instructions is not followed exactly, a fi re or explosion may result, causing
property damage, personal injury, or death.
– Do not store or use gasoline or other infl ammable 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 fi re department.
– Installation and service must be performed by a qualifi ed installer, service agency or the gas supplier.
Rev.05/17
Owner’s Guide – Table of Contents
Chapter 1 Product Overview
Chapter 2 Safety Regulations.
Chapter 3 Unit Operation
Operating Flow chart
Safety Precautions
Before Operation
When in Operation
Important Safety Information
Initial Operation
Control Panel Interface 13
Control Panel LCD Interface 14
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’
11
12
15
17
19
19
3
4
7
9
Chapter 4 Maintenance
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 from Freezing-1 31
10. Preventing Damage from Freezing-2 33
1. General Maintenance
2. Cleaning the Water Heater
20
21
22
24
25
27
28
29
30
34
35
Chapter 5 Troubleshooting
Chapter 6 Follow-up Service
Memo
2
3. Flushing the Water Heater
4. Checking for Error Conditions
Troubleshooting
Follow-up Service
37
39
40
41
42
Chapter 1. – Product Overview
Operating Flow Chart
Operating Flow Chart
Standard mode
Combustion
This water heater is a highly effi cient, 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.
The condensing tankless gas water heater discharges condensate.
When heat from the exhaust gas
is collected within the secondary
heat exchanger, condensation
occurs from moisture in the
exhaust gas and the resulting
water is discharged from the drain
pipe (approx. 2 gallons/hour (7.5
liters/hour) maximum). It is not a
water leak. Do not plug or block
the drain line as it must always be
allowed to freely fl ow.
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.
Recirculation mode
The recirculation pipe must
be installed in the fi eld 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.
Combustion
This mode is
available without a
recirculation pipe
installed. The water
heater is preheated
and protected from
freezing.
Combustion
External Recirculation mode Internal Recirculation mode
3
Chapter 2. – Safety Regulations
Safety Precautions
Safety Precautions
To avoid product damage, personal injury, or even possible
death, carefully read, understand, and follow all the instructions in the Installation and Owner’s Guide and on the Water
Heater before installation, operation, or service.
Noritz cannot anticipate every circumstance that might involve a potential hazard and our warnings are, therefore, not
all-inclusive. Proper installation, operation, and service are
your responsibility.
You must be satisfi ed that the operation and settings of the
Water Heater are safe for you and for others.
Safety Symbols are provided in the guide. When a user fails to
adhere to the following requirements, it can cause death, serious
damage, and a great property loss. For safety symbols, ‘DANGER’ , ‘WARNING’ , CAUTION’ are indicated and the defi nitions
for these terms are below :
DANGER
Indicates an imminently hazardous situation which, if not avoided,
will result in death or serious injury. This signal word is limited to
the most extreme situations.
WARNING
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury. It is also used to alert
against unsafe practices and hazards involving only property
damage.
WARNING
FOR YOUR SAFETY READ
BEFORE OPERATING
If you do not follow these instructions exactly, a fi re
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 sure to smell next to the fl oor because
some gas is heavier than air and will settle on the fl oor.
WHAT TO DO IF YOU SMELL GAS
• 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.
• If you cannot reach your gas supplier, call the fi re
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 qualifi ed service technician.
Force or attempted repair may result in a fi re or explosion.
D. Do not use this appliance if any part has been under water.
Immediately call a qualifi ed service technician to inspect
the appliance and to replace any part of the control system
and any gas control which has been under water.
WARNING
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting.
2. Turn off all electric power to the appliance if service is to be
performed.
3. Turn manual gas shutoff valve to ˝OFF˝ position
4
Chapter 2. – Safety Regulations
Safety Precautions
WARNING
OPERATING INSTRUCTIONS
1. STOP! Read the safety information above on this label.
2. Set the thermostat to lowest setting.
(Do not use Water Heater unless it is completely fi lled with
water.)
3. Turn OFF electrical power supply to the Water Heater.
4. This Water Heater is equipped with an ignition device
which automatically lights the main burner. Do not try to
light the burner by hand.
5. Turn gas shut-off valve clockwise to ˝OFF˝ position. Do not
force
6. Wait fi ve (5) minutes to clear out any gas. If you then smell
gas, STOP! Follow step ˝B˝ above on this label. If you don’t
smell gas, go to next step.
7. Turn manual gas shut-off valve to ˝ON˝ position.
8. Turn ON electrical power to the appliance.
9. Wait until default temperature (120°F) is displayed. Set
desired water temperature. Turn hot water faucet on.
10. Set thermostat to desired setting.
11. If the appliance will not operate, follow the instructions
˝To Turn Off Gas To Appliance˝ and call your service
technician or gas supplier.
Safety Precautions
DANGER
Vapors from fl ammable liquids will explode and catch fi re
causing death or severe burns.
Do not use or store fl ammable products such as gasoline,
solvents or adhesives in the same room or area near the
appliance.
Keep fl ammable products :
Far away from Water Heater
In approved containers
Tightly closed
Out of children’s reach
DANGER
Use this Water Heater at your own risk.
The outlet temperature of the Noritz Water Heater is factory 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. Children, disabled, and
elderly are at the highest risk of being scalded. Do not leave
children or the infants unsupervised. Check temperature of
hot water before taking a shower or bath. To control water
temperature to a particular faucet, temperature limiting valves
can be installed by your service professional.
Vapors
Cannot be seen
Vapors are heavier than air
Go a long way on the fl oor
Can be carried from other rooms to the main burner by air
currents
Do not install the appliance where fl ammable products will
be stored.
Read and follow Water Heater warnings and instructions. If
owner’s guide is missing contact the retailer or manufacturer.
5
Chapter 2. – Safety Regulations
Safety Precautions
WARNING
Proper care is your responsibility. Carefully read
and understand the Operating Information in this
guide before operating the Noritz Water Heater.
Be fully aware of where the gas shut-off valve is
located and how to operate it.
Close the gas shut-off valve immediately if the
appliance is subjected to fi re, overheating, fl ood,
physical damage, or any other damaging condition
that might aff ect the operation of the unit.
The Water Heater must be checked by a qualifi ed
technician before resuming operation.
DO NOT use this Water Heater if any part has
been under water, call a qualifi ed technician
immediately for inspecting the Water Heater and
for replacing any part of the control system and
any gas control which has been under water.
Safety Precautions
Do not power up the unit unless the gas and water
supply valves are fully opened. Make sure that fresh
air intake fl ue and exhaust gas fl ue are opened and
functional.
DO NOT attempt to install, repair, or service the
Water Heater by yourself.
Contact a qualifi ed technician if the Water Heater
needs repair or maintenance.
Ask your gas supplier for a list of qualifi ed service
providers.
˝Verify proper operation after servicing operation˝
The gas ignition system components must be
protected from water (dripping, spraying, rain, etc.)
during appliance operation and service (circulator
replacement, condensate trap, control replacement,
etc.)
DANGER
Do not operate the water heater if its combustion air intake is located in or near one of the areas or in the vicinity of products listed in
Table. These areas will always contain hazardous contaminates that can form strong acids while passing through the burner and vent
system. These acids will corrode the water heater’s heat exchanger, burner components and vent system, resulting in fl ue gas spillage
and/or water leakage, possible substantial property damage, severe personal injury, or death. If the water heater combustion air intake
is located in any area likely to cause or contain contamination, or if products which would contaminate the air cannot be removed, the
intake must be re-piped and terminated to another location.
PRODUCTS TO AVOID AREAS LIKELY TO HAVE CONTAMINANTS
Spray cans containing fl uorocarbons 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 for water softening Photo processing plants
Refrigerant leaks Auto body shops
Paint or varnish removers Plastic manufacturing plants
Hydrochloric or Muriatic acid Furniture refi nishing areas and establishments
Cements and glues New building construction
Antistatic fabric softeners used in clothes dryers Remodeling areas
Chlorine-type bleaches, laundry detergents, and cleaning solvents Garages and workshops
6
Chapter 2. – Safety Regulations
Before Operation
CAUTION
Before Operation
1. Check the gas being used.
When the Water Heater is used or moved for the fi rst time, user
must check whether the type of gas being supplied matches the
specifi c gas type for the appliance.
The type of gas is indicated on the rating plate on side of the
water heater.
2. Check the electricity being supplied.
Please check whether the appliance is connected properly.
4. Check the water supply valve.
Please leave the appliance water supply valve open at all times
(it must be closed during installation)
3. Check the gas valve.
Please confi rm the gas valve connected to the water heater
(it must be closed during installation)
7
Chapter 2. – Safety Regulations
Before Operation
Before Operation
WARNING
Do not store fl ammable material in the appliance
room.
Do not store portable gas container, thinner, oil, or other
fl ammable materials in the room. Otherwise, fi re may break out.
Do not place combustible items, such as newspapers
or laundry, near the appliance or venting pipe.
Do not store combustible (fl ammable) materials such as papers.
Do not hang clothes on the exhaust vent. Otherwise, fi re may
break out.
CAUTION
Pull out the power plug from the receptacle if lightning 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, disable and elderly are at the
highest risk of being scalded. (Freeze protection is unavailable
if the unit is unplugged from power.)
8
Chapter 2. – Safety Regulations
When in Operation
When in Operation
After repair of gas pipeline or gas regulator replace-
ment, call service agent for inspection before starting it up.
Ventilation during gas leakage
If exhaust gas enters room, it could cause poisoning by carbon
monoxide. Check if the exhaust pipe is connected properly.
Open windows for ventilation at appropriate intervals.
What to do if you smell gas
1. Do not try to light any appliance.
2. Do not touch any 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 fi re
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 supplier for
inspection)
In cases where the pipes are frozen
Thaw the water supply pipeline or hot water discharge line with
hair dryer or other electric heating device. If it does not work,
Contact the installer or Service agent for assistance.
9
Chapter 2. – Safety Regulations
When in Operation
CAUTION
When in Operation
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 parts may be
deteriorated or failed due to the infi ltration of moisture.
Do not disassemble the Water Heater.
Service must be performed by a qualifi ed installer, service
agency or gas supplier. Otherwise, Warranty will be voided.
Burn Protection
Do not touch the exhaust vent or hot water line during operation
since they are very hot. Otherwise, the user may get burned.
10
Chapter 2. – Safety Regulations
Important Safety Information
CAUTION
Imortant Safety Indormation
Do not drink water that has been inside the unit for an
extended period of time. Do not drink the fi rst use of
hot water from the unit in the morning.
Clean the fi lter on the water inlet as frequently as
required by the quality of your local water.
Keep the area around the unit clean.
If boxes, weeds, cobwebs, cockroaches etc. are in the
vicinity of the unit, damage or fi re can result.
Do not install the equipment where the exhaust will
blow on walls or windows.
Problems resulting from scale formation are not
covered by the warranty.
Preventing damage from freezing
Damage can occur from frozen 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.
If it is snowing, check the intake and exhaust vent
terminal for blockage.
Do not use parts other than those specifi ed for this
equipment.
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.
11
Chapter 3. – Unit Operation
Initial Operation
• Before the fi rst use of your water heater, make the following preparations.
1. Open the water pipe valve.
2. Open a hot water fi xture/faucet to confi rm that
water is available, and then close the fi xture/faucet
again.
Initial Operation
3. Open the gas supply valve.
4. Turn on the power on the front panel.
Do not touch with wet hands.
12
Chapter 3. – Unit Operation
Control Panel Interface
Control Panel Interface
Function Button
Power ON / OFF Button
For turning the water heater on/off.
Display Screen
Hot Water Temperature Setting Button
Indicator (Green)
Recirculation Timer Button
Enter / Dial Button
Buttons
Power ON / OFF Button Control Panel Power ON/OFF N/A
Function Button Cancel / Return
Hot Water Temperature Button
Recirculation Timer Button Timer setting mode N/A
Hot water temperature setting
100°F~120°F (38°C~49°C) with 5°F interval.
Press Press and Hold (more than 5 seconds)
Functionality
Status display mode at power ON
Installer mode at power OFF
High temperature setting
125°F~140°F (51.5°C~60°C) with 5°F interval.
Dial (Enter) Button Menu and value up(+) / down(-) N/A
13
Chapter 3. – Unit Operation
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.
Control Panel LCD Interface
Combustion Icon
Communication Status
External Recirculation Icon
Hot Water Operating Icon
Vacation Mode Icon
Recirculation Timer Icon
Clock Display
Temperature Unit
Lock Mode
High Temperature Icon
Status Display
Timer Setting (Displayed in units of 30 minutes)
Timer Setting (Displayed in units of 1 hour)
[ Example ]
CURRENT TIME : AM 1:39
CURRENT DAY : MONDAY
Current and Scheduled Day
Pump Operating Icon
DESIRED HOT WATER TEMPERATURE : 120
TIMER SETTING : MONDAY 5:00~6:30 , 18:00~20:00
°F
14
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