Trial Operation - Noritz GQ-C3260WXQ-FF US Installation Manual

14 Trial Operation

The installer should test operate the Water Heater,
explain to the customer how to use the Water
Heater, and give the owner this manual before
leaving the installation.
Before filling the Water Heater, pipe the
recirculation system in accordance with the
plumbing diagram on page 41 and 42.
Never turn on and fire up the Water Heater unless
the system is completely filled with water.
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 Water Heater.
• If the Water Heater does not
operate normally, refer to
"Troubleshooting" in the Owner's
Guide.
1. Purge the air in the Water Heater and all
the water line in accordance with following
procedure.
1) Close the gas supply valve.
2) (Only with dedicated return line) Close the
"Ball Valve for Return Line". See the detail
plumbing information for location of "Ball
Valve for Return Line" on page 42.
3) Open all fixtures on hot water supply, and
make sure that supplied water is discharging
from each fixture without air. Then close all
the fixtures.
4) (Only with dedicated return line) Open the
"Hose Bibb" to assist with purging all air from
the whole plumbing system. See the detail
plumbing information for location of "Hose
Bibb" on page 42.
5) (Only with dedicated return line) Open the
"Ball Valve for Return Line".
6) Open the three drain plugs to purge air
from the return line and recirculation pump
(internal pump). Make sure that supplied
water is flushing out through the three drain
plugs without air. Then close the three drain
plugs.
NOTE Drain water into a bucket to prevent
water damage.
60
Trial Operation
Pump
Drain
Plug
2. Open the gas supply valve.
3. Turn on the button or the "Power" button on
the Remote Controller (the Power indicator will
turn on).
• Recirculation pump turns on automatically and
starts Auto recirculation mode.
(If using On-Demand (Title 24) mode, press the
on-demand switch to start pump operation.)
NOTE If gurgling noise occurs or the error
code 63 appears on the Remote
Controller, it may be caused by air
remaining in the system (e.g. Cold
Water Line, Hot Water Line, Return
Line or Water Heater).
Purge air from the system completely
according to the Step 1-3.
Without purging air, the Water Heater
can not operate properly.
[If installed a single water heater]
4. After two minutes since turning on the
button or the "Power" button, 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 Remote Controller, air may be
trapped in the gas line.
1) Close a hot water fixture.
2) Turn the Water Heater 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.
5. Check that the hot water temperature changes
by pressing the /
[If installed with a Quick Connect Multi-System]
4. Two minutes after turning on the
the "Power" button, slowly open a hot water
fixture and check that a Water Heater ignites
independently.
NOTE
If an error code "11" or "F11" appears
on the Remote Controller, air may be
trapped in the gas line.
1) Close a hot water fixture.
2) Turn the Water Heater off and then
Return
Drain
Plugs
buttons.
Proceed to Steps 6 and 7
button or