Installation Guide

69
For Multi-System
1. Open the front covers.
2. Connect the blue connector marked “FLUSH” for Water Heater needing to be flushed.
(The Water Heater is isolated from Multi-System when the blue connector marked “FLUSH” for flushing is
connected. Not need to disconnect the “Cord for the Multi-System”.)
4. Turn on the circulation pump to circulate the
flushing solution through the Water Heaters for
1 hour at a rate of 1.5 GPM or more.
NOTE
The code “CCC” does not change
when Multi-System mode. The display
does not show the remaining time of
flushing.
Circuit Board Circuit Board
Water Heater 2Water Heater 1Water Heater 6
Cord for Multi-System
Do not need to disconnect.
Remote Controller
System
Controller
FLUSH FLUSH
Connect
5. Check for the remaining time of flushing to see
the Maintenance Monitor #80 (MM #80).
8 00 10 5 1
8 00 00 0 0
Unit No Item Data
Unit No Item Data
8 00 10 0 0
Unit No Item Data
Press
Press
Press either “ENTER” button (
)
in order to move ( ).
Press either or button ( ) in
order to switch to MM #80.
Unit No
0 3
Item Data
0 00 0 0
(Display Example)
1 hour passes
Press the both buttons
simultaneously for
more than 2 seconds.
And then press either or button (
)
in order to switch the Unit No
.
(e.g. Unit #1)
It means the remaining time
of flushing is “51 minutes”.
3. Then the code is displayed on the
Remote Controller and the error alarm
continuously sounds.
CCC
Press the “ALARM OFF” button to stop the error
alarm.
120°F
Temp
Error unit #01
CCC
Beep!
Beep!
ON ON
“System down” is displayed when
the blue connectors of all Water
Heaters are connected at the
same time.
(e.g. The display when the blue connector
of Unit #1 is connected)
Maintenance