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16 Trial Operation
The installer should test operate the Combi Boiler,
explain to the customer how to use the Combi
Boiler, and give the owner this manual before
leaving the installation.
Trial Operation
DANGER
There is a scald potential if the setting
temperature is too high.
Should overheating occur, or the gas supply fail to
shut off, turn off the manual control valve to the
appliance.
NOTE • White smoke may be noticed
from the exhaust vent during cold
weather. This is not a malfunction
of the Combi Boiler.
• If the Combi Boiler does not
operate normally, refer to
"Troubleshooting" in the Owner's
Guide.
1. Heating Side (Auto Feeder Process)
1)Turn on the power to the Operation Display.
2) The unit starts auto feeder process for heating
when the heating water pressure is less than
[I:14_HPS (default: 12psi) - 4psi].
3) Once heating water pressure reaches to a
certain pressure, the pump will operate to
bleed the air from the heating loop.
4) The unit will repeat auto feeder process for
heating and the unit will stop the trial run when
the heating water pressure reaches to [I:14_
HPS (default: 12psi)].
* The Operation Display will display the following
rotational patterns during the auto feeder
process.
* If error code 57 appears on the Operation
Display after finishing auto feeder process, the
Combi Boiler is not filled with water enough to
operate. When error code 57 appears, press
the ON/OFF button twice and start auto feeder
again.
2. DHW Side
1) Open a hot water fixture to confirm that water
is available, and then close the fixture.
2)Open the gas supply valve.
3) Turn on the power supply on the Operation
Display (the Power indicator will turn on).
[If installed a single Combi Boiler]
3. Open a hot water fixture and confirm that the
Flame symbol comes on, and that hot water is
being produced.
NOTE If an error code "11" appears on the
Operation Display, air may be trapped
in the gas line.
1) Close a hot water fixture.
2) Turn the Combi Boiler off and then
back on.
3) Reopen a hot water fixture.
4) If necessary, repeat until the air is
completely purged from the gas
line.
4. Check that the hot water temperature changes
by changing the temperature setting.
[If installed with a Quick Connect Multi-System]
3. Slowly open a hot water fixture and check that
a unit ignites independently. Check to see that
the hot water temperature is the same as the
temperature displayed on the Operation Display.
NOTE If an error code "11" or "F11" appears
on the Operation Display, air may be
trapped in the gas line.
1) Close a hot water fixture.
2) Turn the Combi Boiler off and then
back on.
3) Reopen a hot water fixture.
4) If necessary, repeat until the air is
completely purged from the gas
line.
4. Make sure the proper installation and proper
operation according with on page 52.
NOTE If step 3 and 4 cannot be done, the
Quick Connect Cord may not be
properly connected.
Check that the cord is connected
according with on page 51 and 52.
Proceed to Steps 5 and 6
Proceed to Steps 5 and 6
Trial Operation
69
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