Test Operation; Precautions Before Starting Test Operation - Daikin KHRQ23M29H Installationsanleitung

14.3. Test operation

After installation and once the field settings are defined, the installer
is obliged to verify correct operation. Therefore a test run must be
performed according to the procedures described below.

Precautions before starting test operation

During test operation, the outdoor unit and the indoor units will start
up.
Make sure that the preparations of all indoor units are finished
(field piping, electrical wiring, air purge,...). See installation
manual of the indoor units.
CAUTION
Do not insert fingers, rods or other objects into the air
inlet or outlet. When the fan is rotating at high speed, it
will cause injury.
CAUTION
Do not perform the test operation while working on the
indoor units.
WARNING
During tests never pressurize the appliances with a
pressure higher
pressure (as indicated on the nameplate of the unit).
If refrigerant gas leaks, ventilate the area immediately.
Toxic gas may be produced if refrigerant gas comes
into contact with fire.
Never directly
refrigerant. This could result in severe wounds caused
by frostbite.
Test run is possible for ambient temperatures between
–20°C and 35°C.
DANGER: DO NOT TOUCH PIPING AND INTERNAL
PARTS
See "2. General Safety precautions" on page 2.
DANGER: ELECTRICAL SHOCK
See "2. General Safety precautions" on page 2.
Provide a logbook and machine card.
In accordance with the applicable legislation, it may be necessary to
provide a logbook with the equipment containing at least: info on
maintenance, repair work, results of tests, stand-by periods, ....
Also, at least, following information shall be provided at an accessible
place of the system:
instructions for shutting down the system in case of an
emergency
name and address of fire department, police and hospital
name, address and day and night telephone numbers for
obtaining service.
In Europe, EN378 provides the necessary guidance for this logbook.
INFORMATION
Note that during the first running period of the unit,
required power input may be higher. This phenomenon
originates from the compressor that requires a 50 hour run
elapse before reaching smooth operation and stable power
consumption. Reason is that the scroll is made out of iron
and that it takes some time to smooth the surfaces that
make contact.
NOTICE
To protect the compressor, be sure to turn on the power
supply 6 hours before starting operation.
Installation manual
27
than the maximum allowable
touch any accidental leaking
Test operation
The procedure below describes the test operation of the complete
system. This operation checks and judges following items:
Check of the stop valves opening
Check of wrong wiring
Check of refrigerant overcharge
Check of indoor unit operation
On top of this test operation, the HXHD125 indoor unit operation can
also be checked separately. Refer to the indoor unit installation
manual for more details.
Make sure to carry out the test operation after the first
installation. Otherwise, the malfunction code U3 will be displayed
on the remote controller and normal operation can not be
carried out.
Abnormalities on indoor units can not be checked for each unit
separately. After the test operation is finished, check the indoor
units one by one by performing a normal operation using the
remote controller.
1 Close all front panels except the front panel of the electric
component box.
2 Turn ON the power to the outdoor unit and the connected indoor
units.
Be sure to turn on the power 6 hours before operation in order to
have power running to the crankcase heater and to protect the
compressor.
3 Push BS4 TEST button for 5 seconds or more. The unit will start
test operation.
The test operation is automatically carried out in heating
mode, the H2P LED will blink and the messages "Test
operation" and "Under centralized control" will display on the
remote controller.
It may take 10 minutes to bring the state of the refrigerant
uniform before the compressor starts.
During the test operation, the refrigerant running sound or
the magnetic sound of a solenoid valve may become loud
and the LED display may change, but these are not mal-
functions.
During the test operation, it is not possible to stop the unit
operation from a remote controller. To abort the operation,
press the BS3 RETURN button. The unit will stop after
±30 seconds.
Test run may take up to 1 hour or more.
4 Close the front panel in order to let it not be the cause of
misjudgement.
5 Check the test operation results by the LED display on the
outdoor unit.
H1P H2P H3P H4P H5P H6P H7P
x x w x x x x
Normal completion
x w w x x x x
Abnormal completion
6 When the test operation is fully completed, normal operation will
be possible after 5 minutes.
Otherwise, refer to "Correcting after abnormal completion of the
test operation" on page 28 to take actions for correcting the
abnormality.
REYAQ10~16P7Y1B
VRVIII system outdoor unit
4PW62582-1A – 08.2011