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Daikin EWWD380J-SS [10/11] D eimwc01006 11eu 11 192
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D - EIMWC01006-11EU - 11/192
Interconnection cables
A pump interlock contact must be installed in
series with the contact of the flowswitch(es)
to prevent the unit from operating without water
flow. A terminal is provided in the switch box for
the electrical connection of the interlock contact.
In both cases, all units must be equipped with an
Interlock contact!
NOTE Normally the unit will not operate if there is no
flow thanks to the standard installed flowswitch.
But as to have a double safety, you must install
the pump interlock contact in series with the
contact of the flowswitch.
Operating the unit without flow will result in very
severe damage to the unit (freezing of the
evaporator).
• Voltage free contacts
The controller is provided with some voltage free
contacts to indicate the status of the unit. These
voltage free contacts can be wired as described
on the wiring diagram. The maximum
allowable
current is 2 A.
• Remote inputs
Besides the voltage free contacts, there are also
possibilities to
install
remote inputs.
They can be installed as shown on the
wiring diagram.
Periodic obligatory checks and starting up of
appliances under pressure
The units are included in category III of the
classification established by the European Directive
97/23/EC (PED). For chiller belonging to this category,
some local regulations require a periodic inspection by
an authorized agency. Please check with your local
requirements.
Disposal
The unit is made of metal, plastic and electronic parts.
All these parts must be disposed of in accordance with
the local regulations in terms of disposal.
Lead batteries must be collected and sent to specific
refuse collection centres.
Oil must be collected and sent to specific refuse
collection centres.
BEFORE STARTING
The unit should not be started, not even for a very
short period of time, before the following pre-
commissioning checklist is filled out completely.
tick
when
checked
standard
steps to go through before
starting the unit
1
Check for external damage
2
Open all shut-off valves
3
Install
mainfuses, earth leak detector
and
mainswitch. Recommended fuses: aM
according to IEC standard 269-2.
Refer to the wiring diagram for size.
4
Supply the main voltage and check if it is within
the allowable ±10% limits of the nameplate
rating.
The electrical main power supply should be
arranged so, that it can be switched on or off
independently of the electrical supply to other
items of the plant and equipment in general.
Refer to the wiring diagram, terminals L1, L2
and L3.
5
Supply water to the evaporator and verify if
waterflow is within the limits as given in the
table under “Water charge, flow and quality”.
6
The pipng must be completely
purged.
See
also chapter “Preparing, checking and
connecting the water circuit”.
7
Connect the
pump contact(s)
in series with the
contact of the flowswitch(es), so that the unit
can only come in operation when the
waterpumps are running and the water flow is
sufficient.
8
Check the oil level in the compressors.
9
Install the
filter kit(s) supplied with the unit
in
front of the evaporator(s) water inlet.
10
Check that all the
water sensors
are corrently
fixed into the heat exchanger (see also the
sticker attached to the heat exchanger).
NOTE
It is necessary to read the operation manual
delivered with the unit before operating the unit.
It will contribute to understand
the operation of
the unit and its electronic controller.
Close all switch box doors after installation
of the unit.
Содержание
- Installation operation and maintenance manual 1
- Water cooled screw chillers ewwd120j ss ewwd560j ss condenserless water cooled screw chillers ewld110j ss ewld530j ss refrigerant r 134a 1
- D eimwc01006 11eu 4 192 3
- Ewwd120j ss 280j ss ewld 110j ss 265j ss 3
- Ewwd310j ss 560j ss ewld 290j ss 530j ss 3
- Label identification 3
- Contents content 4
- D eimwc01006 11eu 5 192 4
- Electrical specification 4
- Introducion 4
- Options 4
- Options and feature 4
- Technical specification 4
- D eimwc01006 11eu 6 192 5
- Features 5
- Inspecting and handling the unit 5
- Main components 5
- Operation range 5
- Selection of location 5
- Air or dirt gets in the water circuit problems may occur therefore always take into account the following when connecting the water circuit 6
- D eimwc01006 11eu 7 192 6
- Ewld j version connecting the refrigerant circuit this product is factory charged with 6
- Important information regarding the refrigerant used 6
- Leak test and vacuum drying 6
- The units are equipped with a refrigerant inlet discharge side and a refrigerant outlet liquid side for the connection to a remote condenser this circuit must be provided by a licensed technician and must comply with all relevant european and national regulations precautions when handling piping 6
- Unpacking and placing the unit 1 remove the wooden beams from the unit 2 install vibration mountings in case of an installation where noise and vibration might an impediment 3 set the unit on a solid and level foundation the unit should be installed on a solid base it is recommended to fix the unit on a concrete base with anchor bolts 6
- Air or dirt gets in the water circuit problems may occur therefore always take into account the following when connecting the water circuit 7
- Charging the unit 7
- D eimwc01006 11eu 8 192 7
- Fine tuning of refrigerant charge while unit is in operation 7
- Preparing checking and connecting the water circuit the units are equipped with a water inlet and water outlet for connection to a chiller water circuit this circuit must be provided by a licensed technician and must comply with all relevant european and national regulations 7
- Preparing the unit for connection to the water circuit 7
- Superheat must be between 3 and 8 k subcooling must be between 3 and 8 k 4 verify the oil sightglass level must be within the sightglass 4 verify the liquid line sightglass it should be sealed and not indicate moisture in the refrigerant 4 as long as the liquid line sightglass is not sailed add refrigerant in steps of 1 kg and wait until the 7
- Water inlet of the evaporator 2 flowswitch 3 inlet water sensor 4 water inlet pipe containing the flowswitch and the water inlet temperature sensor 5 victaulic coupling 6 counter pipe 7 field water pipe circuit 8 filter 9 filter and cup 7
- D eimwc01006 11eu 9 192 8
- Water charge flow and quality 8
- Connection of the watercooled water chiller power supply 1 using the appropriate cable connect the power circuit to the l1 l2 and l3 terminals of the unit 2 connect the earth conductor yellow green to the earthing terminal pe 9
- D eimwc01006 11eu 10 192 9
- Discharge from pressure relief devices 9
- Field wiring 9
- Parts table 9
- Piping insulation 9
- Power circuit and cable requirements 1 the electrical power supply to the unit should be arranged so that it can be switched on or off independently of the electrical supply to other items of the plant and equipment in general 2 a power circuit must be provided for connection of the unit this circuit must be protected with the required safety devices i e a circuit breaker a slow blow fuse on each phase and an earth leak detector recommended fuses are mentioned on the wiring diagram supplied with the unit 9
- D eimwc01006 11eu 11 192 10
- D eimwc01006 11eu 12 192 11
- Legend 1s compressor status 1 2s compressor status 2 al analog inputs ao analog output c 3w condenser 3 way valve c l current limit cfs condensator flow switch cle current limit enable cp vfd condenser pump vfd d l demand limit di digital inputs 11
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