21
(1) Open a hot water fi xture and confi rm that the Burner on lamp comes on, and that hot water is
being produced. (If necessary, repeat until the air in the gas piping is bled out).
* White smoke may be noticed from the exhaust vent during cold weather. However, this is not a
malfunction of the unit.
* If an “11” error code appears on the remote controller, turn the unit off and then back on again,
and then open a hot water fi xture again.
(2) Change the temperature setting on the remote controller and check that the water temperature changes.
• If the water heater does not operate normally, refer to “Troubleshooting” in the Owner's Guide.
* After the trial operation, clean the fi lter in the cold water inlet.
• Preparation ........... (1) Open a hot water fi xture to confi rm that water is available, and then close
the fi xture.
(2) Open the gas supply valve.
(3) Turn on the power supply. Using the remote controller, turn on the Power
ON/OFF button (the Operation lamp will turn on).
Handling after trial operation
• If the unit will not be used immediately, close off all gas and water shut off valves, drain all
of the water out of the unit and the plumbing system to prevent the unit and system from
freezing, and bleed the gas out of the gas line.
Freezing is not covered by the warranty.
CAUTION
<If installed with a quick connect multi-system>
• Turn the system power ON with the remote controller.
• Slowly open a hot water fi xture and check that the units ignite sequentially. Check to see that the hot water
temperature is the same as the temperature displayed on the remote controller (*1)
* If both units do not ignite, switch which unit will ignite fi rst by pressing the Max. or Min. Mani-fold
Pressure Set Button on the circuit board. (*2)
* If an 11 or F11 error code fl ashes on the remote controller, hit the Power Button on the remote controller off
and on 2 -3 times.
* If (*1) and (*2) cannot be done, the Quick Connect Cord-2 may not be properly connected.
Check that the cord is properly connected.
Unit A Ignites
Unit B Doesn't Ignite
Press Max. or Min. Burner Gas
Pressure Set Button on Unit B
Unit A Doesn't Ignite
Unit B Ignites
12.
Trial Operation
The installer should test operate the unit, explain to the customer how to use the unit, and give the owner
this manual before leaving the installation.
