Noritz NC1991-OD User manual

SBA8883-1
Rev. 03/13
Models : NC1991-OD
NC1991-DVC
TANKLESS GAS WATER HEATER
Owner’s Guide
NORITZ America Corporation
- 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.
If the information in this manual is not followed exactly, a fire or explosion
may result causing property damage, personal injury, or death.
WARNING
Thank you for purchasing this Noritz Tankless Gas Water Heater.
Before using, please:
Read this manual completely for operation instructions.
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.
Noritz America reserves the right to discontinue, or change at any time, the
designs and/or specifications of its products without notice.
FOR USE IN COMMERCIALAPPLICATIONS.
CERTIFIED
R
*SBA8883*
Low NOx Approved
by SCAQMD
14 ng/J or 20 ppm
(Natural Gas Only)

2
Prohibited Don’t
touch.
Don’t
disassemble
the equipment.
Don’t touch
with a wet
hand.
No flame.
High
Temperature.
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. Closely observe these warnings; they are critical to your safety.
Other icons
DANGER
WARNING
CAUTION
DANGER indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
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.
CAUTION used without the safety alert symbol indicates a potentially
hazardous situation which, if not avoided, may result in property damage.
CAUTION
Be sure
to do. Ground.
Electric
Shock.
DANGER
Icons warning of risk level
Important Safety Information-1
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
Vapors from flammable liquids will explode and catch fire causing death or severe burns.
Do not use or store flammable products such as gasoline, solvents or
adhesives in the same room or area near the water heater.
Prohibited
Keep flammable products:
1. Far away from the water
heater.
2. In approved containers.
3. Tightly closed.
4. Out of children’s reach.
Vapors:
1. Cannot be seen.
2. Vapors are heavier than air.
3. Go a long way on the floor.
4. Can be carried from other rooms
to the main burner by air currents.
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.
Feel water temperature before bathing or showering.
Temperature limiting valves are available, ask professional person.
Prohibited
(Continued)

3
(Continued)
No flame.
(Continued)
WARNING
Be sure
to do.
When a gas leak is noticed:
1. Stop use immediately.
2. Close the gas valve.
[NC1991-DVC]
3. Open windows and doors.
If you detect abnormal combustion
or abnormal odors, or during an
earthquake, tornado or fire:
1. Turn off the hot water supply.
2.
Turn off the power to the water heater.
3. Turn off gas and water supply valve.
4. Call the nearest Noritz agent.
Be sure
to do.
Do not allow anyone to change the
water temperature while hot water is
being used.
To prevent scalding, do not change the
water temperature to a higher setting.
Prohibited
A. This water heater does not have
a pilot. It is equipped with an
ignition device that automatically
lights the burner. Do not try to
light the burner by hand.
B.
BEFORE OPERATING smell all
around the water heater area for
evidence of leaking gas. Be sure
to smell next to the floor because
some gas is heavier than air and
will settle on the floor.
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.
C. Use only your hand to turn
the gas valve knob. Never use
tools. If the knob will not turn by
hand, don’t try to repair it. Call
a qualified service technician.
Force or attempted repair may
result in a fire or explosion.
D. Do not use this water heater if
any part has been under water.
lmmediately call a qualified
service technician to inspect the
water heater and to replace any
damaged parts.
Check the temperature
of the running hot water
before entering the
shower.
Check the temperature
before stepping into
the bath tub.
High
Temperature.
Explosion Hazard ;
If the temperature and pressure relief
valve is dripping or leaking, have a
qualified service technician replace it.
Do not plug or remove the valve.
Failure to follow these instructions can result
in fire or explosion, and personal injury or
death.
Prohibited
Prohibited
[NC1991-OD]
Do Not Install Indoors.
This will cause carbon
monoxide poisoning and
a potential fire hazard. Indoor
Prohibited
[NC1991-DVC]
Do not use the
water heater if the
concentric pipe is
displaced, has holes,
is clogged or is
corroded.

4
Important Safety Information-2
(Continued)
Do not place the unit or the flue terminal
in an indoor environment by means of
adding walls and ceiling (Do not enclose
using corrugated sheets, etc.)
Carbon monoxide poisoning or fire may
occur as a result.
(Continued)
If this unit will be installed in a beauty
salon or other location where hair
spray or aerosols will be used, locate
the unit in a separate area that is
supplied with fresh air from outdoors.
Prohibited
Be sure the gas/power
supplied matches the
gas on the rating plate.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
Be sure
to do.
Be sure
to do.
Prohibited
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
Prohibited
Do not place or use a spray can near
the water heater or the flue terminal.
Do not allow small children to play
unsupervised in the bathroom.
Do not allow small children to bath
unsupervised.
Do not use hair spray or spray
detergent in the vicinity of the
heater.
Prohibited
Prohibited
Prohibited
Leave the proper clearance between
the water heater and nearby objects
(trees, timber, boxes with flammable
materials etc.).
Be sure
to do.
*Indicates suggested clearances for maintenance.
Do not place combustibles such as
laundry, newspapers, oils etc. near
the heater
or the flue terminal.
Prohibited
Do not use combustible chemicals
such as oil, gasoline, benzene etc. in
the near the heater or the flue terminal.
Prohibited
Carbon Monoxide Poisoning Hazard. Do
not install this water heater in a mobile
home, recreational vehicle or on a boat.
Prohibited
WARNING
Unit
Left side:
Min. 6" (150mm) Right side:
Min. 6" (150mm)
Upper:
Min. 36" (900mm)
Front:
Sug. 24" (600mm)*
Unit
Ex. For Natural Gas (NC1991-OD)
[NC1991-DVC]
Do not place outdoors
Rain may enter the unit
or the burner fire may be
blown by the wind, causing
malfunction or fire as a result.
Prohibited
Outdoor
Left side:
Min. 2" (50mm) Right side:
Min. 2" (50mm)
Front:
Sug. 24" (600mm)*
Sug. 3" (75mm)
from concentric
pipe*
Upper: Min.
12" (300mm)
[NC1991-OD]
[NC1991-DVC]
Flue terminal
Flue terminal

5
(Continued) Do not touch the power
cord with wet hands.
Electric
Shock.
Don’t touch
with a wet
hand.
Contact Noritz before using with
a solar pre-heater.
Contact a qualified service
technician for any necessary
repairs, service or maintenance.
Consult the nearest Noritz agent if
the water heater location needs to
be changed.
Don’t
disassemble
the equipment.
Be sure
to do.
Be sure
to do.
California Proposition 65 lists chemical substances
known to the state to cause cancer, birth defects,
death, serious illness or other reproductive harm.
This product may contain such substances,
be their origin from fuel combustion (gas, oil)
or components of the product itself.
CAUTION
Be sure to electrically ground the
unit.
Keep power cord free of dust.
Ground.
Be sure
to do.
Do not use the water heater for
other than hot water supply, shower
and bath.
Prohibited
Prohibited
Do not cover the water heater and
the flue terminal, store trash or
debris near it, or in any way block
the flow of fresh air to the unit.
Do not turn off the water heater
while someone is bathing.
Prohibited
Do not use a broken or modified
power cord. Do not bind, bend or
stretch power cords.
Do not scratch, modify, or subject
them to impact or force.
Do not touch the exhaust vent or
the flue terminal and concentric
pipe during or immediately after
operation of the water heater.
Do not install in locations where
excessive dust or debris will be
in the air.
Prohibited
Don’t
touch.
Prohibited
Be sure
to do.
To prevent burns or scalding, turn
off the power button and wait until
the equipment cools before per-
forming maintenance.
The gas conversion kit shall be installed by a
qualified service agency in accordance with
the manufacturer’s instructions and all
applicable codes and requirements of the
authority having jurisdiction. The information
in the instructions must be followed to minimize
the risk of fire or explosion or to prevent
property damage, personal injury, or death.
The qualified service agency is responsible
for the proper installation of this kit. The
installation is not proper and complete until
the operation of the converted appliance is
checked as specified in the manufacturer’s
instructions supplied with the kit.
[NC1991-OD] [NC1991-DVC]

6
Important Safety Information-3
CAUTION
Do not drink water that has been inside the
unit for an extended period of time. Do not
drink the first use of hot water from the
unit in the morning.
Clean the filter 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 fire 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.
This unit is only approved for installation
up to 4500 ft. (1350m) above sea level.
For installations at higher elevations, contact Noritz
America for Instructions.
Check ignition during use and extinction
after use.
If the water supply is in excess of 12 grains
per gallon (200 mg/L) of hardness, acidic
or otherwise impure, treat the water with
approved methods in order to ensure full
warranty coverage. Preventing damage from freezing ( p.32)
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. ( p.33)
Do not use parts other than those specified
for this equipment.
If it is snowing, check the air inlet, exhaust
vent and flue terminal for blockage.
Do not disassemble the remote controller.
Do not use benzene, oil or fat detergents
to clean the remote controller.
This may cause deformation.
Do not get the remote controller wet.
It is not water resistant, water can cause damage.
Do not splash water on the remote
controller. Do not expose the remote
controller to steam.
Do not locate the remote controller near stoves or
ovens, this may cause damage or failure.
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.
For single-handle fixtures or valves, discharge
water setting the handle completely
to the water side.

7
Important Safety Information....................................................................... 2
Contents......................................................................................................... 7
RC-9018M Operation Overview.................................................................... 8
Initial Operation............................................................................................ 10
General Parts
Main Unit................................................................................................... 11
Remote Controller.................................................................................... 12
System Check............................................................................................... 14
For All Systems
Clock Adjustment...................................................................................... 16
Using the Water Heater............................................................................. 17
Setting Hot Water Temperature................................................................ 18
Automatic Water Heater “ON” or “OFF” Operation............................... 20
Locking the Remote Controller................................................................ 22
Customizable Settings <Misc settings>.................................................. 23
For System [Rcrc]
Enabling Automatic Recirculation Operation......................................... 26
Manually Starting Recirculation Operation ............................................ 27
Setting the Recirculation System Operation Timer ............................... 28
Single Water Heater Only
Flow Meter Alarm ...................................................................................... 30
Preventing Damage from Freezing............................................................. 32
Regular Maintenance................................................................................... 35
Troubleshooting........................................................................................... 37
Follow-up Service ........................................................................................ 42
Specifications............................................................................................... 45
Default Settings............................................................................................ 47
Contents

8
RC-9018M Operation Overview
Power Saving Mode
If you set "Powersave dsply" to "Yes" ( p.23),
unnecessary power consumption by the remote
controller is prevented. If approximately ten minutes
pass without using hot water or without pressing a
button, the display of the remote controller turns off.
This setting is adjustable p.23
[When using only one water heater:]
It is possible to set the remote controller to
alert the user when the
bathtub has reached
a preset fill volume
to prevent overfilling.
p.30
It is possible to lock
remote controller
operation.
p.22
It is possible to
automatically turn
the water heater
“ON” or “OFF”.
[For recirculation systems ( )]
It is possible to circulate hot water only
during preferred times of day.
p.20 p.28
Automatically
turned "ON"
Automatically
turned "OFF"
i i



Basic operation
The initial setting is set to "Powersave dsply : No-1"
* If you use hot water or press a button, "Powersave dsply" is released.
If you press the PROG button only once, "Powersave dsply" is released and the automatic program
function will operate.
* If the setting temperature is set to 125°F/55°C or more, "Powersave dsply" will not function to prevent
accidental scalding.
* If "Recirc" is operating, "Powersave dsply" will not function.
The display turns off
(operation is "ON")

9
The remote controller can be customized based on the preference of the user in the following ways:
The remote controller
display can be turned
off to save power.
The clock display can be
shown even though the power
ON/OFF button is set to "OFF".
hat time is it now
Can I sa
ve
ower
The brightness of the
remote controller can be
adjusted for
better visibility.
Additional Settings
p.25 "Draining the Water Heater"Draining the water heater (freeze prevention).
p.25 "Restoring Default Settings"Restoring default remote controller settings.
The set temperature can be
restricted to a maximum level
to prevent high temperature
settings from
being selected.
p.23
The remote controller can be
mutedsothatitdoesnotemita
tone when a button is pressed.
Pi
i i
User Preferences
Adjusting the Maximum
Output Temperature
Remote Controller Display
Brightness Settings p.24
The remote controller can be
mutedsothatitdoesnotemit
a tone when an error occurs.
Power Saving Modes p.23
Error Tone Settings p.24
Muting the
Remote Controller p.24

10
Initial Operation
Before the first use of your water heater, make the following preparations.
Follow steps 1 through 4.
1Open the water supply valve.
Open a hot water fixture to confirm that
water is available, and then close the
fixture again.
3Open the gas supply valve.
Hot water fixture
2
Turn on the power.
CLOSED
4
OPEN
Do not touch with wet hands.
(Ex. NC1991-OD)

11
General Parts -1
Main Unit
* The above illustration shows an example of installation.
The exact installation configuration may be slightly different.
NC1991-OD
(Outdoor Wall Mounted, Power Vented Model)
Air Inlet
Water Supply Valve
Gas Supply Valve
Pressure Relief Valve
Exhaust Vent
Front Cover
Water Drain Valve
(with Water Filter)
(Inside Water Inlet)
(p.36)
NC1991-DVC
(Indoor Wall Mounted, Power Vent/Sealed Model)
Front Cover
Water Supply Valve
Gas Supply Valve
Water Drain Valve
(with Water Filter)
(Inside Water Inlet)
(p.36)
Pressure Relief Valve
Concentric Pipe

12
General Parts -2
Remote Controller (RC-9018M)
The remote controller will emit a tone when a button is pressed.
Activates the automatic water heater power
“ON” or “OFF” setting as determined by the
user selected schedule. ( p.21)
For turning the water heater
on/off.
(Next page)
Locks remote controller
operation. ( p.22)
Check the status of the
system or the number of
installed units ( p.14)
Returns to the previous
screen while making system
settings or checking status.
Confirms changes
made by the user.
For setting the hot water
temperature ( p.18),
the flow meter alarm,
and other settings.
Remote Controller
Part Number
* Use to change system
settings or to return to
the home screen.
* If you press the menu button
and press the temperature
setting buttons,
is sometimes displayed,
however, do not use this
mode as it meant for
installation or service
personnel only.
Stops the tone that is emitted
when an error occurs. ( p.41)
Cover shown in
the open position.
Prog Button / Indicator (Red)
Power ON /OFF Button
/ Indicator (Green)
Menu Button
Back Button
Alarm Off Button
/ Indicator (Red)
Speaker
Display Screen
Status Button
Lock Button
Enter Button
Hot Water Temperature
Setting Buttons
The part number
is printed on the
surface of the cover.

13
(Ex.: AM10:15)
Normally the clock display is not shown when
the power ON/OFF button is "OFF".
* This setting can be changed so that the clock is displayed
even when the power button is turned "OFF". ( p.23)
* The screen display shown below is for illustration purposes only.
The actual display will vary depending on how the water heater is being used.
* After a button is pressed, the display will gradually become darker to prevent unnecessary power consumption
by the remote controller.
(Ex.: 110°F)
The flame symbol is displayed during
combustion when using hot water or
recirculation functions.
A number will flash if a
failure occurs. ( p.41)
<Home Screen Example>
Screen Display
What is the home screen?
The home screen is displayed when the button is "ON".
Normally, the hot water temperature and the clock, etc. are displayed.
Flame Symbol
During normal operation, the set
temperature is displayed.
Display for Recirculation Operation
Display for High Temperature
Temperature Setting
Clock Display
Error Code
* For systems that use recirculation operation, the symbol
is displayed when the power ON/OFF button is set to "ON".
* It is displayed during the recirculation operation. ( p.18)
Display for Temperature Setting
The lock symbol is displayed
when the remote controller is
locked. ( p.22)
Locked Display
The clock symbol is displayed
when the recirculation timer is
activated. ( p.29)
Recirculation Timer
Displays when the set temperature
is 125°F/55°C (131°F) or higher.
(p.19)
Note: As shipped from the factory, the remote controller is set to display in °F and gallons.
To adjust the display to °C and liters, refer to the Installation Manual.

14
Cover shown in
the open position.
(Display Screen Example [System [Rcrc] ])
If you press the button, you can check the status of the system
System Displayed on
the Remote Controller System Description
Water heater only operation.
* Water heater and recirculation operation.
*During recirculation operation, hot water is
always circulated in the piping to provide
instant hot water when a fixture is opened.
[If you set the
button to "ON",
is displayed. (If "synchro ON/OFF"
is set to "ON". ( p.26))]
* Water heater combined with a storage tank
operation.
* If a recirculation system is also installed,
hot water is always circulated in the piping
to provide instant hot water when a fixture
is opened.
[If you set the
button to "ON",
is displayed.]
System Check

15
General System Diagram
* The number of water heaters, fixtures, and
pumps will vary depending on the configuration of the hot water system.
Applicable Remote
Controller Functions
Functions other than
those shown on pages
26 to 29 can be used.
All functions
can be used.
Functions other than
those shown on pages
26 to 31 can be used.
Depending on the configuration of your system, not all functions may be used.
hen you start using the system, cold
water in the i ing must be discharged
before receiving hot water.
ater heater
ater heater
Instant hot
water is
available.
ot water is circulated
in the i ing.
um
ot water
storage
tank
Instant hot
water is
available.
ater heater
umum
ot water is circulated
to the tank.

16
For All S stems
Clock Adjustment
* This adjustment can be made
regardless of whether the
button is ON/OFF.
1
2
(Ex: AM10:15)
Cover shown in
the open position.
31)
2)
The screen returns to the previous screen.
Press the button
inside the cover.
Press the button.
1) Use the buttons to
reset the clock.
2) Press the button
to complete the clock setting.
* The time changes in 1-minute
increments with each press
of the button, and then in
10-minute increments if the
button is kept pressed down.
* If the display is left untouched for
approximately 20 seconds without
pressing the button, the
setting will be completed. When
the button is turned ON,
the home screen will be restored.
* In the event of a power outage or after disconnecting power to the water heater, when power is
restored, the clock on the display screen will show " - : - - " and the clock will need to be reset.
*
Normally, when the button is turned OFF, the clock display disappears, but it is possible to display
the clock when the button is turned OFF by changing a setting.
( p.23)
Operation Screen Display Description

17
* The indicator is lit.
* The previously set hot water
supply temperature is shown.
[For systems with recirculation operation]
*If you set the button to "ON",
recirculation operation is automatically started.
(If "Synchro ON/OFF" was set to "ON".( p.26))
* The setting temperature displayed
may vary from the actual temperature
at the fixture depending on conditions
such as season or length of piping.
*During operation, the symbol
may be continuously lit.
1
2Turn on hot water.
Lit during com ustion
Chec (Ex.: 110°F)
Turn off hot water. Unlit
DANGER
High Temperature
To prevent scalding :
Hot Water Heater temperatures over 125°F (52°C) can cause
severe burns instantly or death from scalding.
For All S stems
Using the Water Heater
*If is displayed, hot water
will be discharged at the temperature of the
storage tank.
For systems with recirculation operation,
is displayed here.
button is "ON".
Turn off the hot water
Operation Screen Display Description
•Children, disabled and elderly are at the highest risk of being scalded.
Feel water temperature before bathing or showering.
Temperature limiting valves are available, ask a professional person.
•
When setting the unit to 125°F / 55°C (131°F) or higher, “Hi temp” will flash for 10 seconds and emit a tone
as a high temperature warning.
• Take caution when using the unit again after setting to 125°F (52°C) or higher. Always check the set
temperature before use.
•Do not allow anyone to change the water temperature while hot water is running.

18
* The indicator is lit.
* The previously set hot water
supply temperature is shown.
1button is "ON".
2Set the temperature using
the buttons inside
the cover
.
(Ex.: 110°F)
(Ex.: 105°F)
Cover shown in
the open position.
*If is displayed, hot water
will be discharged at the temperature of
the storage tank.
For All S stems
Setting Hot Water Temperature
Operation Screen Display Description

19
Temperature Setting Options
• Hot water temperatures shown are approximate and may differ from the actual temperature at the
fixture depending on external factors such as the season and length of piping in the system.
• When low temperatures are set (for washing dishes, etc.), if the incoming water temperature is
already quite high, it may be difficult to ensure the outgoing water temperature is as per the setting.
• Please check the temperature displayed before using any hot water.
Be especially careful using hot water after the set temperature has been changed.
• When the hot water temperature is adjusted using thermostat controlled water mixing valves, set the
temperature on the remote controller approximately 20°F (10°C) higher than the required temperature
to ensure the appropriate fixture temperature.
< Display when high temp is set >
(Ex.: 125°F)
(°F:)
The temperature settings below are examples. The temperature setting
necessary depends on the usage, the length of piping and the time of year.
*Initial factory setting is 110°F
If fixtures incorporate mixing valves, set the temperature higher than usual.
100 105 110 115 120 125 130 135 140 145 150 160 170 185
Shower, hot water supply, etc.
Washing
dishes, etc.
(°C (°F):)
The temperature settings below are examples. The temperature setting
necessary depends on the usage, the length of piping and the time of year.
*Initial factory setting is 40°C (104°F)
Shower, hot water supply, etc.
Washing
dishes, etc.
High temperature
37 38 39 40 41 42 43 44 45 46 47 48 50 55 60 65 70 75 80 85
(99) (100) (102) (104) (106) (108) (109) (111) (113) (115) (117) (118) (122) (131) (140) (149) (158) (167) (176) (185)
When using °F mode:
When using °C mode:
* For applications that occasionally require a higher temperature setting,
locate the remote controller in a convenient location.
* Consult local codes for minimum operating temperatures.
High temperature
Blinks for approximately 10 seconds Lit.

20
1 Chec that the current time is properl set
Setting the time p1
2 Chec the utton is set to OFF
Co er shown
in the open
position
This e ample descri es setting the ON time and OFF time to 1 : am and : pm respecti el
1* ou can set the time regardless if
the button is or .
* The reviously set Start time
and nd time are dis layed.
2
3
1 Set the ON time to
AM1 : using
the uttons
2 Press the utton
to complete the setting
1
2
1
2
1
2
Set the time to turn ON or OFF the utton automaticall
Operation Screen Displa Description
For All S stems
Automatic Water Heater “ON” or “OFF”
* I ou set the time to turn ON or OFF the
utton the utton is automaticall
turned ON or OFF at the set time e er
da ust turning the utton ON
* It is also possi le to set onl “ON” or
“OFF” operation
* For recirculation s stems circulation is
started or stopped according to the
utton condition ON or OFF
* The time changes in 1 minute
increments with each ress of the
button, and then in 1 hour increments if
the button is ke t ressed down.
* If the revious setting is , ress the
button without setting Start time .
* If you do not want to set the Start time ,
select located between A 11
and settings .
* The time changes in 1 minute
increments with each ress of the
button, and then in 1 hour increments if
the button is ke t ressed down.
* If the revious setting is , ress the
button without setting nd time .
* If you do not want to set the nd time ,
select located between A 11
and settings .
1 Press the utton
inside the co er
Select Set PROG
using the uttons
2 Press the utton
Preparation
1 Set the OFF time to
PM : using
the uttons
2 Press the utton
to complete the setting