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Daikin EUWA water chillers Manual

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Installation and operation manual
9
EUWA(*)5~24KBZW1
Packaged air-cooled water chillers
4PW61653-1 – 07.2010
Point for attention regarding quality of the public
electric power supply
■ This equipment complies with EN/IEC 61000-3-11
(1)
provided that
the system impedance Z
sys
is less than or equal to Z
max
at the
interface point between the user's supply and the public system. It is
the responsibility of the installer or user of the equipment to ensure,
by consultation with the distribution network operator if necessary,
that the equipment is connected only to a supply with a system
impedance Z
sys
less than or equal to Z
max
.
■
Only for EUWAN+P+B8~24:
Equipment complying with
EN/IEC 61000-3-12
(2)
OPERATING THE UNIT
BEFORE OPERATION
Checks before initial start-up
After the installation of the unit, check the following before switching
on the circuit breaker:
1 Field wiring
Make sure that the field wiring between the local supply panel
and the unit has been carried out according to the instructions
described in the the chapter "Field wiring" on page 8, according
to the wiring diagrams and according to European and national
regulations.
2 Fuses or protection devices
Check that the fuses or the locally installed protection devices
are of the size and type specified in the chapter "Electrical
specifications" on page 4. Make sure that neither a fuse nor a
protection device has been bypassed.
3 Earth wiring
Make sure that the earth wires have been connected properly
and that the earth terminals are tightened.
4 Internal wiring
Visually check the switch box on loose connections or damaged
electrical components.
5 Fixation
Check that the unit is properly fixed, to avoid abnormal noises
and vibrations when starting up the unit.
6 Damaged equipment
Check the inside of the unit on damaged components or
squeezed pipes.
7 Refrigerant leak
Check the inside of the unit on refrigerant leakage. If there is a
refrigerant leak, call your local Daikin dealer.
8 Oil leak
Check the compressor on oil leakage. If there is an oil leak, call
your local Daikin dealer.
9 Air inlet/outlet
Check that the air inlet and outlet of the unit is not obstructed by
paper sheets, cardboard, or any other material.
10 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.
11 Ball valve and filter kit
Make sure that the ball valve and filter kit are correctly installed.
12 Pressure regulating valve and shut-off valve
Check that the pressure regulating valve (only for EUWAP and
EUWAB) and the shut-off valves are fully open.
Water supply
Fill the water piping, taking into account the minimum water volume
required by the unit. Refer to the chapter "Water charge, flow and
quality" on page 7.
Make sure that the water is of the quality as mentioned in the chapter
"Water quality specifications" on page 7.
Purge the air at the high points of the system (automatic air purge
inside the chiller) and check the operation of the circulation pump and
the flow switch.
Power supply connection and crankcase heating
To switch on the crankcase heater proceed as follows:
1 Switch on the main switch of the unit. Make sure that the unit is
“OFF”.
2 The crankcase heater is switched on automatically.
3 Check the supply voltage on the supply terminals L1, L2, L3, (N)
by means of a voltmeter. The voltage must correspond to the
voltage indicated on the identification label of the unit.
If the voltmeter reads values which are not within the ranges
specified in the technical data, check the field wiring and replace
the supply cables if necessary.
4 Check the service leds H1P and H2P on the I/O PCB (A2P).
If the H1P led is off and the H2P is on, then the phase order is
not correct. Switch off the main switch and call a licensed
electrician to connect the wires of the power supply cable in the
correct phase order.
After six hours, the unit is ready for operation.
(1) European/International Technical Standard setting the limits for voltage
changes, voltage fluctuations and flicker in public low-voltage supply
systems for equipment with rated current ≤75 A.
Z
max
(Ω)
EUWAN+P+B5 0.26
EUWAN+P+B8 0.22
EUWAN+P+B10 0.22
EUWAN+P+B12 0.21
EUWAN+P+B16 0.21
EUWAN+P+B20 0.21
EUWAN+P+B24 0.20
(2) European/International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage systems
with input current >16 A and ≤75 A per phase.
Make sure that the main switch of the unit is switched off.
Operating the system with closed valves will damage
the pump.
In order to avoid compressor damage, it is necessary to
switch on the crankcase heater for at least six hours
before starting the compressor after a long period of stand-
still.
4PW61653-1_digital_EN.book Page 9 Thursday, August 26, 2010 1:49 PM
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