66
For Single Water Heater
[Procedure 1. Flushing the Heat Exchanger]
1. Open the front cover.
2. Connect the blue connector marked “FLUSH” for
flushing near the Circuit Board.
[Procedure 2. Cleaning the Heat Exchanger]
The flushing solution needs to be rinsed and
cleaned out of the Water Heater.
Below is the way to rinse and clean the flushing
solution.
1. Remove both drain hoses (H2 and H3) from the
bucket. And then place the drain hose (H3) into
the sink or outside to drain.
2. Close the drain valve (V3) and then open the
water inlet valve (V1).
Do not open the fresh water outlet valve (V2).
3. Clean the Water Heater with fresh water for 3
minutes or more.
(Needs to have enough time to clean the Water
Heater.)
Circuit Board
FLUSH
FLUSH
Connect
NOTE
Check whether the reverse
connection of the hose (H1) and (H3)
if the display number will not change.
In that case, the flow rate of the
flushing solution may be under 1.5
GPM.
3. Then the code is displayed on the
Remote Controller.
4. Turn on the circulation pump to circulate the
flushing solution through the Water Heater for 1
hour at a rate of 1.5 GPM or more.
5.
CCC
Water
Drain Valve
6. Turn off the circulation pump.
NOTE
The Water Heater has a “Water Drain
Valve” on the bottom of the Water
Heater.
Place a bucket under the Water
Heater to drain water from the
“Water Drain Valve”.
Carefully unscrew the “Water Drain
Valve” to rinse flushing solution out of
the Water Heater for about 10
seconds, then close the “Water Drain
Valve”.
7. Close the front cover.
8. Open the gas supply valve and water outlet
valve (V2).
9. Check for correct operation of the Water Heater.
4. Close the drain valve (V4) and then remove the
drain hose (H3) from the drain valve (V4).
5. Remove the drain hose (H1) from the drain valve
(V3).
6. Disconnect the blue connector marked “FLUSH”
for flushing.
The code “C00” goes out on the Remote
Controller.
Disconnect
FLUSH
Do not disconnect the blue connector
marked “FLUSH” for flushing.
C60
C59
C00
CCC
The code “C60” is displayed on the
Remote Controller when the Water
Heater detects the flow of the flushing
solution.
When 1 minute passes, the code “C60”
will change to “C59” on the Remote
Controller.
When 1 hour passes, the code “C00” is
flashing on the Remote Controller.
Maintenance
Summary of Contents for GQ-C3260WX-FF PB US
Page 68: ......
