Noritz NRCP1112-DV User manual

Owner's Guide
WARNING
NRCP1112-DV / NRCP982-DV (Eco TOUGH)
•NaturalGas(NG)/LiquidPropaneGas(LP)
–Donotstoreorusegasolineorotherin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redepartment.
–Installationandservicemustbeperformedbyaqualiedinstaller,serviceagencyorthegassupplier.
Iftheinformationintheseinstructionsisnotfollowedexactly,are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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.NoritzAmericareservestherighttodiscontinue,orchangeatanytime,thedesignsand/or
specicationsofitsproductswithoutnotice.

2
Owner’sGuide–TableofContents
Chapter1 ProductOverview Operating Flow chart 3
Chapter2 SafetyRegulations. Safety Precautions 4
Before Operation 7
When in Operation 9
Important Safety Information 11
Chapter3 UnitOperation Initial Operation 12
Control Panel Interface 13
Control Panel LCD Interface 14
HowtouseControlPanel
1. Clock Adjustment 15
2. Setting Hot Water Temperature 17
3. Locking the Control Panel 19
4. How to check the ‘Error 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 34
Chapter4 Maintenance 1. General Maintenance 35
2. Cleaning the Water Heater 36
3. Flushing the Water Heater 38
4. Checking for Error Conditions 39
Chapter5 Troubleshooting Troubleshooting 40
Chapter6 Follow-upService Follow-up Service 41
Memo 42

3
Operating Flow Chart
Standard mode
Recirculation mode
Hot W ater
Col d W at er
Co nd en sat e
Gas
Exhaust About 120℉(49℃)
Water is heated
using the exhaust
gas which is about
400℉(200℃).
Air & Gas
Mixing
Combusion gas about
400℉ (200℃)
Primary heat
exchanger
Secondary heat
exchanger
Burner
Hot W ater
Recirculat ion Line
Condensate
Gas
Exhaust About 120℉(49℃)
Water is heated
using the exhaust
gas which is about
400℉(200℃).
Air & Gas
Mixing
Combusion gas about
400℉ (200℃)
Primary heat
exchanger
Secondary heat
exchanger
Burner
Co nd en sat e
Gas
Exhaust About 120℉(49℃)
Air & Gas
Mixing
Combusion gas about
400℉ (200℃)
Primary heat
exchanger
Secondary heat
exchanger
Burner
Re cir cu l a t i on Li n e
Water is heated
using the exhaust
gas which is about
400℉(200℃).
This water heater is a highly ef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recirculationpipemust
beinstalledinthe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.
Thismodeis
availablewithouta
recirculationpipe
installed.Thewater
heaterispreheated
andprotectedfrom
freezing.
ExternalRecirculationmode InternalRecirculationmode
Operating Flow Chart
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 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.
Condensate Pipe
Condensate
comes out from
here.
Chapter1.–ProductOverview

4
Safety Precautions
To avoid product damage, personal injury, or even possible
death, carefully read, understand, and follow all the instruc-
tions in the Installation and Owner’s Guide and on the Water
Heater before installation, operation, or service.
Noritz cannot anticipate every circumstance that might in-
volve a potential hazard and our warnings are, therefore, not
all-inclusive. Proper installation, operation, and service are
your responsibility.
You must be satis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, ‘DAN-
GER’ , ‘WARNING’ , CAUTION’ are indicated and the de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 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 oor because
some gas is heavier than air and will settle on the 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 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 qualied service technician.
Force or attempted repair may result in a re or explosion.
D. Do not use this appliance if any part has been under water.
Immediately call a quali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
Safety Precautions
Chapter2.–SafetyRegulations

5
WARNING
Safety Precautions
Chapter2.–SafetyRegulations
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 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 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.
Vapors from ammable liquids will explode and catch re
causing death or severe burns.
Do not use or store ammable products such as gasoline,
solvents or adhesives in the same room or area near the
appliance.
Keepammable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 oor
Can be carried from other rooms to the main burner by air
currents
Do not install the appliance where ammable products will
be stored.
Read and follow Water Heater warnings and instructions. If
owner’s guide is missing contact the retailer or manufacturer.
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. 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.
DANGER
This appliance is certi󰘰ed for use at altitudes up
to 4,500ft(1,370m) in accordance to the latest CAN/
CGA 2.17-High Altitude Installation procedures at
normal manifold pressure.
Safety Precautions

6
Safety Precautions
Chapter2.–SafetyRegulations
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-o󰘯 valve is
located and how to operate it.
Close the gas shut-o󰘯 valve immediately if the
appliance is subjected to 󰘰re, overheating, 󰘱ood,
physical damage, or any other damaging condition
that might a󰘯ect the operation of the unit.
The Water Heater must be checked by a quali󰘰ed
technician before resuming operation.
DO NOT use this Water Heater if any part has
been under water, call a quali󰘰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.
Do not power up the unit unless the gas and water
supply valves are fully opened. Make sure that fresh
air intake 󰘱ue and exhaust gas 󰘱ue are opened and
functional.
DO NOT attempt to install, repair, or service the
Water Heater by yourself.
Contact a quali󰘰ed technician if the Water Heater
needs repair or maintenance.
Ask your gas supplier for a list of quali󰘰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.)
PRODUCTSTOAVOID AREASLIKELYTOHAVECONTAMINANTS
Spraycanscontaining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re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
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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.
WARNING
DANGER
Safety Precautions

7
Before Operation
Chapter2.–SafetyRegulations
CAUTION
1.Checkthegasbeingused.
When the Water Heater is used or moved for the rst time, user
must check whether the type of gas being supplied matches the
specic gas type for the appliance.
The type of gas is indicated on the rating plate on side of the
water heater.
3.Checkthegasvalve.
Please conrm 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.
Please check whether the appliance is connected properly.

8
Before Operation
Chapter2.–SafetyRegulations
WARNING
Donotstoreammablematerialintheappliance
room.
Do not store portable gas container, thinner, oil, or other
ammable materials in the room. Otherwise, re may break out.
Donotplacecombustibleitems,suchasnewspapers
orlaundry,neartheapplianceorventingpipe.
Do not store combustible (inammable) materials such as
papers. Do not hang clothes on the exhaust vent. Otherwise,
re 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, disable and elderly are at the
highest risk of being scalded. (Freeze protection is unavailable
if the unit is unplugged from power.)
Before Operation

9
When in Operation
Chapter2.–SafetyRegulations
Afterrepairofgaspipelineorgasregulatorreplace-
ment,callserviceagentforinspectionbeforestart-
ing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 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.
When in Operation

10
DonotdisassembletheWaterHeater.
Service must be performed by a qualied intaller, service
agency and 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.
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 parts may be
deteriorated or failed due to the inltration of moisture.
CAUTION
When in Operation

11
Imortant Safety Indormation
Chapter2.–SafetyRegulations
CAUTION
ImportantSafetyInformation
Donotdrinkwaterthathasbeeninsidetheunitforan
extendedperiodoftime.Donotdrinktherstuseof
hotwaterfromtheunitinthemorning.
Clean the 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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.
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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 specied for this
equipment.

12
Initial Operation
Chapter3.–UnitOperation
Initial Operation
•Beforetherstuseofyourwaterheater,makethefollowingpreparations.
Gas Supply
Full port
gas valve
Pressure Relief
Valve
Recirculation water line
Hot water line
Cold wat er l ine
1.Openthewaterpipevalve.
2. Open a hot water xture/faucet to conrm that
waterisavailable,andthenclosethexture/faucet
again.
3.Openthegassupplyvalve.
4.Turnonthepoweronthefrontpanel.
Donottouchwithwethands.

13
Control Panel Interface
Chapter3.–UnitOperation
Control Panel Interface
DisplayScreen
Indicator(Green)
HotWaterTemperatureSettingButton
RecirculationTimerButton
Enter/DialButton
PowerON/OFFButton
For turning the water heater on/off.
FunctionButton
Buttons
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 Timer setting mode N/A
Dial (Enter) Button Menu and value up(+) / down(-) N/A

14
Control Panel LCD Interface
Chapter3.–UnitOperation
HotWaterOperatingIcon
RecirculationTimerIcon
ClockDisplay TimerSetting(Displayedinunitsof30minutes)
TimerSetting(Displayedinunitsof1hour)
CurrentandScheduledDay
CURRENT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 when no action within approximately 20 seconds.

15
How to use Control Panel
Chapter3.–UnitOperation
►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’.
1. Clock Adjustment
· Set in ‘[L:TA] mode’ after turning the ‘Dial Button’ in ‘User Mode’.
· Set the YEAR - MONTH - DAY - DAY OF THE WEEK - HOUR - MINUTE in regular sequence..
Press the dial
button to store
the setting.
Press the dial
button to store
the setting.
1.Settingyear:2014
Set the ‘Year’ by turning the dial button.
(Only the ashing number can be changed.)
Set the ‘month’ by turning the dial button.
(Only the ashing 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 dial
button when ashing the [L:TA] character.
‘[A:GA]’ is displayed on the display screen.
From here, turn the ‘Dial Button’ to start the
setting.
Turn the dial button clockwise until
‘[L:TA]’ is displayed.
2. Setting month : 7
[ To enter ‘User Mode’]

16
How to use Control Panel- User mode
Chapter3.–UnitOperation
Press the dial
button to store
the setting.
Press the dial
button to store
the setting.
Press the dial button to store the setting.
Press the dial button to store the setting.
3. Setting day : 25
5. Setting hour : 10
6. Setting minute : 20
4. Setting day of the
week: Friday
Set the ‘day’ by turning the dial button. (Only the
ashing number can be changed.)
Set the ‘hour’ by turning the dial button. (Only the
ashing number can be changed.)
Set the ‘minute’ by turning the
dial button. (Only the ashing
number can be changed..)
Set the ‘day of the week’ by turning
the dial button. (Only the ashing
number can be changed.)
Press‘FunctionButton()’toreturntonormaloperationmode.
[ For example ]
2014 / July / 25 / Friday /
10 hour / 20 min

17
How to use Control Panel- User mode
Chapter3.–UnitOperation
Generaltemperaturerange Hightemperaturerange
High temperature setting can be set by turning the ‘Dial Button’
from
125°Fto140°F.(51.5°C~60°C)with5°Fincrements.
Normal temperature setting can be set by turning the ‘Dial Button’
from 100°Fto120°F(38°C~49°C)with5°Fincrements.
Press the ‘Hot Water
Temperature Setting Button’.
°F 100 105 110 115 120 125 130 135 140
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 year.
Press ‘Hot Water Temperature Setting Button’ once to get to
temperatures setting, then press and hold the ‘Hot Water
Temperature Setting Button’ for approximately 5 Seconds for
high temperature settings.

18
How to use Control Panel- User mode
Chapter3.–UnitOperation
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 Running 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’ conrmation 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 the setting.
[ To enter ‘User Mode’]

19
How to use Control Panel- User mode
Chapter3.–UnitOperation
1. Select the ‘[I:EH] mode’ by turning the
‘Dial Button’ in ‘User Mode’.
2. ERROR CODE that have occurred can
be identied and ‘E0.11’ character is ash-
ing when the ‘Dial Button’ is pressed in
‘[I:EH] mode’.
3. ERROR CODE that have occurred from E0 to E9 can
be identied by turning the ‘Dial Button’ clockwise.
4. Pressed the ‘Dial Button’ to return to ‘User Mode’
Errorhistory
mode
[For example]
1’st error occurs : 11
2’nd error occurs: 16
4. How to check the ‘Error History’. [I:EH]
- 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 ashing when the ‘Dial Button’ pressed in
‘[C:TL] mode’.
3. Select the ‘on’ character by turning the
‘Dial Button’ clockwise.
‘Temperature Lock’ Icon
Temperature
Lock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.
4. Press the ‘Dial Button’ to store, lock icon is
displayed. And return to ‘User Mode’

20
How to use Control Panel- User mode
Chapter3.–UnitOperation
1. Select the ‘[J:RH] mode’ by turning the
‘Dial Button’ in ‘User mode’. 2. If ‘Dial Button’ is pressed in ‘[J:RH]
mode’, ‘[J:RH]’ character is changed to
[PLUG] character.
[PLUG] : Means the time of the power supply.
EX) 102.8 → 102.8 X 1000 = 102,800 hour
[bnHr] : Means the time of the combustion.
EX) 31.07→ 31.07 X 1000 = 31,070 hour
[PPHr] : Means the time of the PUMP operating
EX) 347.1→ 347.1 X 1000 = 347,100 hour
[bnCY] : Means the number of the combustion.
EX) 4307→ 4307 X 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 1000 = 31,070 hour
bnCY Number of the combustion EX) 4307→ 4307 X 1000 = 4,307,000 times
PPHr Pump running time EX) 347.1→ 347.1 X 1000 = 347,100 hour
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.