Daikin EWAQ016CAW, Installation And Operation Manual

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7 Commissioning
Installation and operation manual
21
EWAQ016~ EWYQ016~064CAW
Packaged air-cooled water chiller
4P489435-1B – 2017.10
A-B-C
A-B-C
A1P A1P
1 2 3
1 Hydrobox
2 Master unit (left unit)
3 Slave unit (right unit) if multi-system
ON
OFF
1 2
DS1 DS2
3 4 1 2 3 4
1 Set DS1 on the outdoor master unit A1P PCB to the ON
position.
2 Press BS5 for 5 seconds to re-initialise communication of the
module.
▪ Cooling: voltage free contact between terminals A and C is
open
▪ Heating: voltage free contact between terminals A and C is
closed
EB0568(A)
R4 C2 R2 R1 C1 R3
X1M
PHC2 PHC1
X1A
1
A B C
INFORMATION
Thermostat input has priority over leaving water
temperature setpoint.
It is possible that the leaving water temperature becomes
lower than the setpoint if the unit is controlled by room
temperature.
7 Commissioning
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.
7.1 Precautions when commissioning
CAUTION
Do not perform the test operation while working on the
indoor units.
When performing the test operation, not only the outdoor
unit, but the connected indoor unit will operate as well.
Working on an indoor unit while performing a test operation
is dangerous.
NOTICE
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.
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 for details.
7.2 Checklist before commissioning
After the installation of the unit, first check the following items. Once
all below checks are fulfilled, the unit must be closed, only then can
the unit be powered up.
You read the complete installation and operation
instructions, as described in the
installer and user
reference guide .
Installation
Check that the unit is properly installed, to avoid abnormal
noises and vibrations when starting up the unit.
Field wiring
Be sure that the field wiring has been carried out
according to the instructions described in the chapter
"5.4 Connecting the electrical wiring" on page 11 ,
according to the wiring diagrams and according to the
applicable legislation.
Power supply voltage
Check the power supply voltage on the local supply panel.
The voltage must correspond to the voltage on the
identification label of the unit.
Earth wiring
Be sure that the earth wires have been connected
properly and that the earth terminals are tightened.
Insulation test of the main power circuit
Using a megatester for 500 V, check that the insulation
resistance of 2 MΩ or more is attained by applying a
voltage of 500 V DC between power terminals and earth.
Never use the megatester for the transmission wiring.
Fuses, circuit breakers, or protection devices
Check that the fuses, circuit breakers, or the locally
installed protection devices are of the size and type
specified
in the chapter "4.3.1 Safety device
requirements" on page 8 . Be sure that neither a fuse nor a
protection device has been bypassed.
Internal wiring
Visually check the electrical component box and the
inside of the unit on loose connections or damaged
electrical components.
Pipe size and pipe insulation
Be sure that correct pipe sizes are installed and that the
insulation work is properly executed.
The air purge valve is open (at least 2 turns).
Shut-off valves
Be sure that the shut-off valves are correctly installed and
fully open.
Filter
Make sure that the filter is installed correctly.
Damaged equipment
Check the inside of the unit on damaged components or
squeezed pipes.
Water leak
Check the inside of the unit for water leakage. If there is a
water leak, try to repair the leak. If the repair is
unsuccessful, close the water inlet and outlet shut-off
valves and call your local dealer.