Noritz RC-9018C User manual

SHC8053
Rev. 10/16
Remote controller
USER’S MANUAL <Operation Guide>
*SHC8053*
Model
RC-9018C
Thank you for purchasing this Remote controller.
* Please read this User’s Manual carefully to ensure appropriate use.
* These operating instructions describe the functions of this remote controller.
Keep these instructions where they can be found whenever necessary, preferably in the same location
as the Owner’s Guide provided with the water heater.
This User’s Manual provides additional details
on the operation of this remote controller not
covered in the water heater Owner’s Guide.
Keep this and all manuals provided with the
water heater for future reference.
Note to Owner:
RC-9018C Operation Overview............................ 2
General Parts
Remote Controller ............................................. 4
System Check....................................................... 6
Functions
For All Systems
Clock Adjustment ............................................ 8
Using the Water Heater ................................... 9
Setting Hot Water Temperature..................... 10
Automatic Water Heater “ON” or “OFF” Operation .. 12
Locking the Remote Controller..................... 14
Customizable Settings <Misc settings>....... 15
Recirculation System Setting
For System [Rcrc]
Enabling Automatic Recirculation Operation .... 18
Manually Stopping Recirculation Operation .. 19
Setting the Recirculation System Operation Timer .... 20
Single Water Heater Only
Flow Meter Alarm.............................................. 22
Troubleshooting .................................................. 24
Follow-up Service................................................ 26
Default Settings ................................................... 27
Contents

2
RC-9018C Operation Overview
Power Saving Mode
If you set "Powersave dsply" to "Yes" ( P15),
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 P15
[When using only one water heater:]
It is possible to set the remote controller to
alert the user when the
water delivery volume
has reached a
preset fill volume.
P22
It is possible to lock
remote controller
operation.
P14
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.
P12 P20
Automatically
turned "ON"
Automatically
turned "OFF"
Pi Pi !!



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 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")

3
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".
What time is it now?
Can I save
power?
The brightness of the
remote controller can be
adjusted for
better visibility.
Additional Settings
P17 "Draining the Water Heater"Draining the water heater (freeze prevention).
P17 "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.
P15
The remote controller can be
muted so that it does not emit a
tone when a button is pressed.
Pi
Pi ! Pi !
User Preferences
Adjusting the Maximum
Output Temperature
Remote Controller Display
Brightness Settings P16
The remote controller can be
muted so that it does not emit
a tone when an error occurs.
Power Saving Modes P15
Error Tone Settings P16
Muting the
Remote Controller P16

4
The remote controller will emit a tone when a button is pressed.
Remote Controller (RC-9018C)
General Parts
Activates the automatic water heater power
“ON” or “OFF” setting as determined by the
user selected schedule. ( P13)
For turning the water heater
on/off.
( Next page)
Locks remote controller
operation. ( P14)
Check the status of the
system or the number of
installed units ( P6,26)
Returns to the previous
screen while making system
settings or checking status.
Confirms changes
made by the user.
For setting the hot water
temperature ( P10),
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. ( P25)
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.

5
(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". ( P15)
* 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.: 40°C)
The flame symbol is displayed during
combustion when using hot water or
recirculation functions.
A number will flash if a
failure occurs. ( P25)
<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. ( P9)
Display for Temperature Setting
The lock symbol is displayed
when the remote controller is
locked. ( P14)
Locked Display
The clock symbol is displayed
when the recirculation timer is
activated. ( P21)
Recirculation Timer
Displays when the set temperature
is 55°C or higher. ( P11)

6
System Check
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". (
P18))]
* 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.]
Cover shown in
the open position.
(Display Screen Example [System [Rcrc] ])
If you press the button, you can check the status of the system

7
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
18 to 21 can be used.
All functions
can be used.
Functions other than
those shown on pages
18 to 23 can be used.
Depending on the configuration of your system, not all functions may be used.
When you start using the system, cold
water in the piping must be discharged
before receiving hot water.
Water heater
Water heater Instant hot
water is
available.
Hot water is circulated
in the piping.
Pump
Hot water
storage
tank
Instant hot
water is
available.
Water heater
PumpPump
Hot water is circulated
to the tank.

8
For All Systems
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. ( P15)
Operation Screen Display Description

9
* 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.18))
* 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 combustion
Check (Ex.: 40°C)
Turn off hot water. Unlit
DANGER
High Temperature
To prevent scalding :
Hot Water Heater temperatures over 50°C can cause severe burns
instantly or death from scalding.
For All Systems
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 55°C 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 50 °C or higher. Always check the set temperature
before use.
• Do not allow anyone to change the water temperature while hot water is running.

10
* 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.: 40°C)
(Ex.: 42°C)
Cover shown in
the open position.
* If is displayed, hot water
will be discharged at the temperature of
the storage tank.
For All Systems
Setting Hot Water Temperature
Operation Screen Display Description
DANGER
High Temperature
To prevent scalding :
Hot Water Heater temperatures over 50°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 a professional person.
•
When setting the unit to 55°C 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 50 °C or higher. Always check the set temperature
before use.
• Do not allow anyone to change the water temperature while hot water is running.

11
Temperature Setting Options
< Display when high temp is set >
Blinks for approximately 10 seconds Lit.
(Ex.: 55°C)
(°C: )
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
When using °C mode:
• 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 10°C higher than the required temperature to ensure the
appropriate fixture temperature.
If fixtures incorporate mixing valves, set the temperature higher than usual.
*
For applications that occasionally require a higher temperature setting, locate the remote controller in a convenient location.
* Consult local codes for minimum operating temperatures.
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

12
1. Check that the current time is properly set.
(Setting the time P.8)
2. Check the button is set to "OFF"
Cover shown
in the open
position.
This example describes setting the "ON time" and "OFF time" to 10:00 am and 8:00 pm, respectively.
1* You can set the time regardless if
the button is "ON" or "OFF".
* The previously set "Start time"
and "End time" are displayed.
2
3
1) Set the ON time to
"AM10:00" using
the buttons.
2) Press the button
to complete the setting.
1)
2)
1)
2)
1)
2)
Set the time to turn "ON" or "OFF" the button automatically
Operation Screen Display Description
For All Systems
Automatic Water Heater “ON” or “OFF”
* If you set the time to turn "ON" or "OFF" the
button, the button is automatically
turned "ON" or "OFF" at the set time every
day by just turning the button "ON".
* It is also possible to set only “ON” or
“OFF” operation.
* For recirculation systems, circulation is
started or stopped according to the
button condition, "ON" or "OFF".
* The time changes in 10-minute
increments with each press of the
button, and then in 1-hour increments if
the button is kept pressed down.
* If the previous setting is OK, press the
button without setting "Start time".
* If you do not want to set the "Start time",
select "- : --" (located between AM 11:50
and PM 0:00 settings).
* The time changes in 10-minute
increments with each press of the
button, and then in 1-hour increments if
the button is kept pressed down.
* If the previous setting is OK, press the
button without setting "End time".
* If you do not want to set the "End time",
select "- : --" (located between AM 11:50
and PM 0:00 settings).
1) Press the button
inside the cover,
Select "Set PROG"
using the buttons.
2) Press the button.
Preparation
1) Set the OFF time to
"PM8:00" using
the buttons.
2) Press the button
to complete the setting.

13
Operation
Activate Automatic Operation
4* If you do not press button,
the time setting is not completed.
*
If you want to change "ON/OFF
time", select "Reset" and then press
the
button, return to step 2.
Operation Screen Display Description
(Display Example)
1button is "ON".
* The indicator is unlit.
button is "OFF".
To Deactivate Automatic Operation
Operation Screen Display Description
* If the button is not set to "OFF", the water heater will automatically turn "ON" or "OFF" at the set times.
* If there is a power failure or power is disconnected to the water heater, automatic operation will be
deactivated.
AM
10:00
PM
8:00
PM
8:00
AM
10:00 your desired time your desired time
Hint for operation Follwing this procedure allows for automated control of water heater operation without user interaction.
* The setting time shown on the display of the remote controller is for example purposes only.
Ex. 1: Both "ON" and "OFF"
functions are automated.
Ex. 2: Only “ON” function is
automated.
Ex. 3: Only “OFF” function is
automated.
Automatically
turned "ON"
Automatically
turned "ON" Automatically
turned "OFF"
Automatically
turned "OFF"
Manually
turned "OFF"
Manually
turned "ON"
Check "Set" is selected,
and then press button
to confirm all settings.
* You can activate automatic
operation regardless if the
button is “ON” or “OFF”.
*
indicator is lit when activated.
* "Start time" and "End time" will
be displayed upon activation.
* If both the "Start time" and "End
time" are set to "- : --", the alarm
sounds "Pi Pi Pi" and
is displayed.

14
* Approximately 3 seconds after
the "locked" screen appears,
the display will return to
the previous screen.
1
For All Systems
Locking the Remote Controller
By locking the remote controller, the
settings cannot be accidentally changed
if a button is pressed by mistake.
Press and hold button
for approximately
2 seconds to lock the
remote controller.
* The operation can be locked
regardless if the button is
“ON” or “OFF”.
* The operations of , ,
and
buttons are locked.
*
Approximately 3 seconds after locking
the remote controller, the display will
return to the previous screen.
If you press these buttons
* Approximately 3 seconds after unlocking
the remote controller, the display will
return to the previous screen.
To Unlock the Remote Controller
Press and hold button
for approximately
2 seconds to unlock the
remote controller.
Cover shown in
the open position.
Operation Screen Display Description
while the remote controller
is locked, the “Locked”
screen will appear.

15
Customizable Settings <Misc settings> -1
Adjusting the Maximum Output
Temperature.

Setting completed


1
2
3
4
The maximum output temperature
can be limited to prevent discharging
hot water at too high of a temperature.
button is "OFF".
Press the button inside
the cover, Select
using the buttons.
Press the button.
Select
using the buttons,
and then
press the button.
Change the
setting using the buttons.
The "Misc settings" screen appears.
(Ex: 85°C)
37 - 48°C (In 1°C intervals),
50 - 85°C (In 5°C intervals)
(Initial setting=85°C)
3
1
2
(Default setting=No-1)
(Ex: No-1 )


Press the button inside
the cover, Select
using the buttons.
Press the button.
The "Misc settings" screen appears.
Select
using the buttons,
and then
press the button.

Change the
setting using the buttons.
Display Screen Power Saving Mode
[powersave dsply]
Yes: the display will turn off and the clock
will not be displayed when the power
ON/OFF button is turned "OFF".
No-1: the display will not turn off and
the clock will not be displayed
when the power ON/OFF button
is turned “OFF”.
No-2: the display will not turn off and the
clock is displayed when the power
ON/OFF button is turned "OFF".
To conserve power consumption by
the display, it can be turned off
completely or set to only display the
clock when the power ON/OFF button
is turned “OFF”.
Setting completed
To change other settings, select the option and press the button.
To return to the home screen, press the button or let it sit for approximately 20 seconds.
For All Systems

16
For All Systems
Customizable Settings <Misc settings> -2
3
1
2
Yes / No
Muting the remote controller.
The remote controller can be muted
so that it does not emit a tone when
a button is pressed.
Press the button inside
the cover, Select
using the buttons.
Press the button.
The "Misc settings" screen appears.
Select
using the buttons,
and then
press the button.
Change the
setting using the buttons.
(Ex: Yes)
(Default setting=Yes)
Setting completed
3
1
2
Dark / Dim / Normal / Bright
Adjusting the brightness of the
display screen when the remote
controller is turned on.
The display screen can be brightened
or darkened or the backlight can be
turned off completely.
(Default setting=Normal)
Change the
setting using the buttons.
Select
using the buttons,
and then
press the button.
Press the button inside
the cover, Select
using the buttons.
Press the button.
The "Misc settings" screen appears.
(Ex: Normal)
Setting completed
3
1
2
Error Tone Settings.
<System dependent option>
The remote controller can be muted
so that it does not emit a tone when
an error occurs.
Press the button inside
the cover, Select
using the buttons.
Press the button.
The "Misc settings" screen appears.
Select
using the buttons,
and then
press the button.
Change the
setting using the buttons.
Yes / No
(Ex: Yes)
(Default setting=Yes)
Setting completed
To change other settings, select the option and press the button.
To return to the home screen, press the button or let it sit for approximately 20 seconds.

17
4
2
3
1
Draining the Water Heater.
( Refer to "Preventing Damage
from Freezing" as shown in the
Owner’s Guide provided with
the water heater.)
Drain the water heater following the
procedures described in the
Owner’s Guide provided with the
water heater.

Press the button inside
the cover, Select
using the buttons.
Select “YES”
using the buttons.
Press the button.
The "Misc settings" screen appears.
button is "OFF".
Select
using the buttons,
and then
press the button.
Press the button.
To stop draining water
from the water heater
If you press the button again
when "Drain water" and "Operating"
are alternately displayed following steps
2 to 3, the drain function will stop.
4
2
3
1
Restoring Default Settings.
Select settings can be restored to
the factory default conditions.
See items marked with a in the
“Default Settings” section ( P27).
button is "OFF".


Press the button inside
the cover, Select
using the buttons.
Press the button.
The "Misc settings" screen appears.
Select
using the buttons,
and then
press the button.
Select “YES”
using the buttons.
Press and hold the button
for approximately 5 seconds.
Setting completed
To change other settings, select the option and press the button.
To return to the home screen, press the button or let it sit for approximately 20 seconds.

18
1
2)
1)
1)
2
3
* This adjustment can be made
regardless of whether the
button is ON/OFF.
2)
The screen returns to the previous screen.
* If the display is left untouched
for approximately 20 seconds
without pressing the button,
the setting will be completed, and
when the button is turned
ON, the home screen will be
restored.
* To check system status. ( P6)
* When “synchro ON/OFF” is set to “No”,
recirculation can be activated manually.
* To change “synchro ON/OFF” from “No”
to “Yes”, follow the same procedure as
described below.
Enabling Automatic
Recirculation Operation
For
Select "Synchro ON/OFF"
and press the button.
1) Press .
2) Press the button.
Cover shown in
the open position.
1) Press the button
inside the cover,
Select "Recirc menu"
using the buttons.
2) Press the button.
Operation Screen Display Description

19
The screen returns to the previous screen.
Recirculation operation can be manually
stopped or started using this procedure.
1
2* If the display is left untouched
for approximately 20 seconds
without pressing the button,
the setting will be completed.
1)
2)
[Display when the recirculation is set to "ON"]
1 ) Select "Recirc on/off"
using the buttons.
2) Press the button.
[Display when recirculation is set to "OFF"]
Cover shown in
the open position.
2)
1)
1) Press the button
inside the cover,
Select "Recirc menu"
using the buttons.
2) Press the button.
Operation Screen Display Description
Manually Stopping
Recirculation Operation
For
* Even if recirculation is set to "OFF", recirculation operation is restarted by either turning the button
"ON", when the water heater is turned ON automatically ( P12) or when the recirculation timer ( P20)
is active.
* You can set this function if the
button is "ON".

20
This example describes setting the recirculation system to operate between 5:00 am - 8:00 am.
1
2
3Here
1)
2)
1)
2)
(Example of a display)
1)
2)
* With the recirculation operation timer set, hot water
will be automatically circulated in the hot water pipes.
Even with this function activated, it may take several
minutes for hot water to be completely circulated
through the plumbing system. Set the timer to
activate the recirculation system prior to the first use
of hot water to ensure hot water is instantly available.
* Multiple recirculation time periods can be set.
* Until the timer is deactivated ( P21), the recirculation
system will operate daily at the set times.
* When the recirculation system is turned “OFF” by
the timer, the water heater will still remain “ON”
and can be used normally.
For
Setting the Recirculation System
* The previous setting is displayed.
* Every time when you press the
button, the time changes by one hour.
[To keep the current “Start” time]
Press the
button
without
changing the "Start" time,
and proceed to step 4.
[To add additional time periods to the current
setting, or to cancel the previous setting]
1) Press the button without setting "Start" time.
2) Press the button without setting "End" time.
3) Follow the procedures "Adding
Additional Time Periods” or
“Resetting All Time Periods” ( P21).
Cover shown
in the open
position.
Check that the current time is properly set.
(Setting the time P.8)
Preparation
* You can set the timer regardless
if the
button is “ON” or “OFF”.
1) Select "Recirc timer"
using the buttons.
2)Press the button.
1)
Press the button inside the
cover, Select "Recirc menu" using
the
buttons.
2) Press the button.
1) Select "AM5:00" using
the buttons.
2) Press the button
to complete the “Start”
time setting.
Operation Screen Display Description