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Daikin EUWA water chillers Manual

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EUWA(*)5~24KBZW1
Packaged air-cooled water chillers
4PW61653-1 – 07.2010
Installation and operation manual
6
DESCRIPTION DIMENSIONS
For dimensions of the unit, refer to the outlook diagram delivered with
the unit.
INSPECTING AND HANDLING THE UNIT
The units are packed in a wooden crate and attached on a wooden
pallet.
At delivery, the unit should be checked and any damage should be
reported immediately to the carrier claims agent.
When handling the unit, take into account the following:
1 Fragile, handle the unit with care.
Keep the unit upright in order to avoid compressor damage.
2 Lift the unit preferably with a crane and 2 belts in accordance with the
instruction sticker on the unit.
3 When lifting the unit with a crane, always use protectors to prevent
belt damage and pay attention to the position of the unit’s centre of
gravity.
4 Bring the unit as close to its final installation position in its original
package to prevent damage during transport.
UNPACKING AND PLACING THE UNIT
1 Remove the wooden crate from the unit.
2 Remove the screws fixing the unit to the pallet.
3 The unit must be installed on a solid longitudinal foundation
(steelbeam frame or concrete).
4 Fasten the unit in place using four anchor bolts M12.
5 Make sure that the unit is levelled in both directions.
6 If the unit is operating below –5°C ambient, the unit must be
installed out of the wind. If this is not possible, a windscreen
must be installed.
IMPORTANT INFORMATION REGARDING THE
REFRIGERANT
USED
This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol. Do not vent gases into the atmosphere.
Refrigerant type: R407C
GWP
(1)
value: 1652.5
(1)
GWP = global warming potential
The refrigerant quantity is indicated on the unit name plate.
CHECKING THE WATER CIRCUIT
The units are equipped with a water inlet and water outlet for
connection to a water circuit. This circuit must be provided by a
licensed technician and must comply with all relevant European and
national regulations.
Before continuing the installation of the unit, check the following
points:
Only for EUWAN version
■ A circulation pump must be provided in such a way that it
discharges the water directly into the water heat exchanger.
■ Provide adequate safeguards in the water circuit to make sure that
the water pressure will never exceed the maximum allowable
working pressure (10 bar).
For all versions
■ A kit containing 2 ball valves and 1 filter is delivered with the unit.
For location of the kit within the unit, refer to the outlook diagram
and to the sticker on the frontplate of the unit. Install this kit at the
water inlet of the unit. Refer to figure 3.
■ Drain taps must be provided at all low points of the system to permit
complete drainage of the circuit during maintenance or in case of
shut down. A drain plug is provided to drain the water from the
chiller water system.
■ Air vents must be provided at all high points of the system. The
vents should be located at points which are easily accessible for
servicing. An automatic air purge is provided on the chiller water
system.
■ Ta ke care that the components installed in the field piping can
withstand at least the sum of opening pressure of the safety valve +
the static height of the pump.
■ For EUWAP and EUWAB: 6 bar.
■ For EUWAN: depending on the selected pump and safety
valve.
CONNECTING THE WATER CIRCUIT
Water connections must be made in accordance with the outlook
diagram delivered with the unit, respecting the water in- and outlet.
If air, moisture or dust gets in the water circuit, problems may occur.
Therefore, always take into account the following when connecting
the water circuit:
1 Use clean pipes only.
2 Hold the pipe end downwards when removing burrs.
3 Cover the pipe end when inserting it through a wall so that no dust
and dirt enter.
4 Use a good thread sealant for the sealing of the connections. The
sealing must be able to withstand the pressures and temperatures of
the system, it must also be resistant to the used glycol in the water.
5 Because brass is a soft material, use appropriate tooling for
connecting the water circuit. Inappropriate tooling will cause damage
to the pipes. Refer to figure 3.
Space for air inlet B1/B2
Space for air outlet ≥3 m
Service space
1 Prepare a water drainage channel around the
foundation to drain waste water from around the unit.
2 If the unit is to be installed on a roof, check the
strength of the roof and its drainage facilities first.
3 If the unit is to be installed on a frame, install a
waterproofing board with a distance of 150 mm
under the unit in order to prevent infiltration of water
coming from under the unit.
4 In case of indoor installation, make sure to connect a
drainhose to the drain connection (Ø16).
Not installing the filter kit can lead to severe damage
of the unit.
Be careful not to deform the unit piping by using excessive
force when connecting the piping. Deformation of the
piping can cause the unit to malfunction.
1 To secure the piping of the chiller
2 To connect the ball valve
4PW61653-1_digital_EN.book Page 6 Thursday, August 26, 2010 1:49 PM
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