Water Treatment - Noritz NRC98-OD Installation Manual

Water Treatment

This water heater is equipped with an optional automatic service reminder function to alert the user
when flushing or a cartridge/filter change is required. Once activated, the unit will display an "05" error
code on the remote controller when maintenance is due. The service interval can be set for either 6,
12, or 24 months; refer to page 14 for recommended flushing intervals. If a water treatment device is
installed, refer to the instructions provided with the device for suggested service intervals. By default,
the service reminder function is disabled.
To activate or adjust the service reminder error "05", refer to the below procedures.
Note: The setting must be done within the first 10 minutes of connecting electrical power to the water
heater.
Setting Procedure:
1. Turn the water heater off by pressing the Power On/Off Button on the remote controller.
2. Disconnect, then reconnect electrical power to the water heater.
3. Press Setting Button "
controller displays "99".
4. Press Setting Button " " or "
displays "2C".
5. Press the Flow Meter Alarm Set Button for more than
0.5 seconds to switch between ON and OFF.
"oF" PRIORITY LED goes out
"on" PRIORITY LED blinks
6. If "2D" also needs to be changed, repeat steps 4 and 5.
7. To confirm the settings, press the Setting Buttons " " and "
5 seconds. After the settings are confirmed, the maintenance writer mode will end and the remote
controller display will disappear.
Reset the display of the operation panel in the following way after the water heater is serviced.
When the "05" error code appears, reset the display only after the water heater is flushed and/or
the water treatment device is serviced.
If the error is reset without performing the necessary service, the water heater may fail prematurely.
Note : In the case of Quick connect multi system, perform scale cleaning of both units.
How to reset the scale warning:
1. Set the Power On/Off Button to the OFF position.
2. Push the Flow Meter Alarm Set Button more than 2 seconds.
3. Push the Flow Meter Alarm Set Button several times until "7 oF" is displayed.
4. Press Setting Button " " more than 5 seconds.
This will complete the service warning reset.
5. Push the Power On/Off Button.
6. The preset temperature is displayed.
Press setting button " " more than
5 seconds. At this time, a sound is
emitted from the operation panel.
* Do not change any other dipswitches.
* High elevation adjustment.
5 6
Standard
3300 ft (1000m)
4900 ft (1500m)
6600 ft (2000m)
ON= OFF=
" or " " within 10 minutes of connecting electrical power until the remote
* Do not change any other dipswitches.
" until the remote controller
* High temperature.
1 2
Standard
130 F (55 C)
140 F (60 C)
ON= OFF=
Push the Power On/Off Button.
* Do not change any other dipswitches.
* Vent length condition.
3
1 Minimum length
2 Short length
3 Long length
4 Maximum length
ON= OFF=
2D 2C
No warning
6 months
12 months
24 months
ON= OFF=
" simultaneously for more than
4
*Initial factory setting.
Setting Button
Power On/Off Button
Flow Meter
Alarm Set Button
13