Use and Care Manual

44
Flushing the Heat Exchanger
• The Heat Exchanger regularly needs to be flushed
to prevent damage from Scale Build-up.
Refer to the “Procedure for flushing the Heat
Exchanger” on page 65 or contact Noritz America
for more information. (http://support.noritz.com/
or 1-866-766-7489)
About the Service Reminder
• This Water Heater is equipped with an automatic
service reminder to announce for flushing the
Heat Exchanger.
• If the service reminder is selected to ON, the code
“C1#*” will displayed on the Remote Controller
after the set time period has been reached.
When the code is displayed, the Heat Exchanger
needs to be flushed to prevent damage from
Scale Build-up.
* Noritz recommends to flush the Heat Exchanger
when the code “C1#” appears.
# = 1, 2, 3, 4 ... 9
• The factory default of this service reminder is
disable.
If desired, the customer or installer needs to
enable the service reminder (connect the red
connector marked “SERVICE REMINDER”).
[When the code “C1#” appears:]
Flush the Heat Exchanger.
Refer to the “Procedure for flushing the Heat
Exchanger” on page 65.
After completing the flushing, the code will be
reset.
To deactivate the code “C1#”, disconnect the red
connector marked “SERVICE REMINDER”. The
service reminder will be disabled.
[Procedure when turning the service reminder ON]
1. Remove the front cover (4 screws).
2. Connect the red connector marked “SERVICE
REMINDER” near the Circuit Board.
3. Reattach the front cover (4 screws).
SERVICE REMINDER
Connect
SERVICE REMINDER
The service reminder is enabled
when connecting the connector.
Circuit Board
NOTE
Need to be flushed the Heat
Exchanger in this case.
Connecting the Water Supply