READ THESE INSTRUCTIONS CAREFULLY BEFORE
INSTALLATION. KEEP THIS MANUAL IN A HANDY
PLACE FOR FUTURE REFERENCE.
IMPROPER INSTALLATION OR ATTACHMENT OF
EQUIPMENT OR ACCESSORIES COULD RESULT IN
ELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OR
OTHER DAMAGE TO THE EQUIPMENT. BE SURE ONLY
TO USE ACCESSORIES MADE BY DAIKIN WHICH ARE
SPECIFICALLY DESIGNED FOR USE WITH THE
EQUIPMENT AND HAVE THEM INSTALLED BY A
PROFESSIONAL.
IF UNSURE OF INSTALLATION PROCEDURES OR USE,
ALWAYS CONTACT YOUR DAIKIN DEALER FOR
ADVICE AND INFORMATION.
The English text is the original instruction. Other languages are
translations of the original instructions.
INTRODUCTION
General information
Thank you for purchasing this Daikin inverter chiller.
This unit is designed for outdoor installation and used for both
heating and cooling applications. The unit is designed to be
combined with fan coil units or air handling units for air conditioning
purposes.
Heat pump and cooling only versions
This chiller range consists of 2 main versions: a heat pump (EWYQ)
version and a cooling only (EWAQ) version, available in 6 standard
sizes:
■V3: 9, 10, and 11 kW (single phase)
■W1: 9, 11, and 13 kW (3 phase)
Options
■Remote alarm kit EKRP1HB
■Heater tape option OP10
Both versions are also available with a heater tape option
(OP10) for protecting internal water pipework at cold outdoor
temperatures.
Connection to a benefit kWh rate power supply
This equipment allows for connection to benefit kWh rate power
supply delivery systems. Full control of the unit will remain possible
only in case the benefit kWh rate power supply is of the type that
power supply is not interrupted. Refer to "Connection to a benefit
kWh rate power supply" on page 14 for more details.
Installation manual
1
Scope of this manual
This manual describes the procedures for unpacking, installing and
connecting all EWA/YQ models, as well as instructions for
maintenance and troubleshooting of the unit.
EWAQ+EWYQ009~011ACV3 + EWAQ+EWYQ009~013ACW1
Packaged air-cooled water chillers and packaged
reversible air to water heatpumps
4PW51587-1A
Model identification
SAFETYCONSIDERATIONS
EWAQ009ACV3P-H-
P = Pump included
H = OPHP
Nominal voltage
V3: 1~ 230 V 50 Hz
W1: 3N~ 400 V 50 Hz
Major/minor change
Indication of heating/cooling capacity (kW)
R410A refrigerant
A = cooling only,
Y = heating and cooling
European water chiller
(a) OPHP = High ESP pump.
(b) Please see "Technical specifications" on page 25 for exact values.
ACCESSORIES
Accessories supplied with the unit
12
1x1x2x1x
67
1x1x
1Installation manual
2Operation manual
3Wiring diagram sticker (inside unit cover doors 1 and 2)
4User interface kit
(digital remote controller, 4 fixing screws and 2 plugs)
5Main switch handle
6Protection cap
7Protection cap (only for W1 models)
341x5
Option heater tape
(a)
included
(b)
The precautions listed here are divided into the following two types.
Both cover very important topics, so be sure to follow them carefully.
WARNING
If the warning is not observed, it may cause serious casualties.
CAUTION
If the caution is not observed, it may cause injury or damage to the
equipment.
Warning
■For use of units in applications with temperature alarm settings it
is advised to foresee a delay of 10 minutes for signalling the
alarm in case the alarm temperature is exceeded. The unit may
stop for several minutes during normal operation for "defrosting
of the unit" or when in "thermostat-stop" operation.
■
Ask your dealer or qualified personnel to carry out installation work
Do not install the machine by yourself.
Improper installation may result in water leakage, electric shocks
or fire.
■Perform installation work in accordance with this installation
manual.
Improper installation may lead to water leakage, electric shocks
or fire.
■Be sure to use only the specified accessories and parts for
installation work.
Failure to use the specified parts may result in water leakage,
electric shocks, fire, or the unit falling.
■Install the unit on a foundation that can withstand its weight.
■Insufficient strength may result in the fall of equipment and
causing injury.
■Carry out the specified installation work in consideration of
strong winds, typhoons, or earthquakes.
Improper installation work may result in accidents due to fall of
equipment.
■Make certain that all electrical work is carried out by qualified
personnel according to the local laws and regulations and this
installation manual, using a separate circuit.
Insufficient capacity of the power supply circuit or improper
electrical construction may lead to electric shocks or fire.
■Make sure that all wiring is secure, using the specified wires and
ensuring that external forces do not act on the terminal
connections or wires.
Incomplete connection or fixing may cause a fire.
■When wiring the power supply, form the wires so that the
frontside panel can be securely fastened.
If the frontside panel is not in place, overheat of the terminals,
electric shocks or a fire may be caused.
■After completing the installation work, check to make sure that
there is no leakage of refrigerant gas.
■Before touching electric terminal parts, turn off power switch.
■Live parts can be easily touched by accident.
Never leave the unit unattended during installation or servicing
when the service panel is removed.
■Never directly touch any accidental leaking refrigerant. This
could result in severe wounds caused by frostbite.
.
EWAQ+EWYQ009~011ACV3 + EWAQ+EWYQ009~013ACW1
Packaged air-cooled water chillers and packaged
reversible air to water heatpumps
4PW51587-1A
Installation manual
2
Caution
■Earth the unit.
Earthing resistance should be according to national regulations
Do not connect the earth wire to gas or water pipes,
lightning conductor or telephone earth wire.
Incomplete earthing may cause electric shocks.
■ Gas pipe.
Ignition or explosion may occur if the gas leaks.
■ Water pipe.
Hard vinyl tubes are not effective earths.
■ Lightning conductor or telephone earth wire.
Electric potential may rise abnormally if struck by a lightning
bolt.
■Be sure to install an earth leakage circuit breaker.
Failure to install an earth leakage circuit breaker may cause
electric shocks and fire.
■Install the power wire at least 1 meter away from televisions or
radios to prevent image interference or noise.
(Depending on the radio waves, a distance of 1 meter may not
be sufficient to eliminate the noise.)
■Do not rinse the unit. This may cause electric shocks or fire.
■Do not install the unit in places such as the following:
■ Where there is mist of mineral oil, oil spray or vapour.
Plastic parts may deteriorate, and cause them to fall out or
water to leak.
■ Where corrosive gas, such as sulphurous acid gas, is
produced.
Corrosion of copper pipes or soldered parts may cause the
refrigerant to leak.
■ Where there is machinery which emits electromagnetic
waves.
Electromagnetic waves may disturb the control system, and
cause malfunction of the equipment.
■ Where flammable gases may leak, where carbon fiber or
ignitable dust is suspended in the air or where volatile
flammables, such as thinner or gasoline, are handled.
Such gases may cause a fire.
■ Where the air contains high levels of salt such as that near
the ocean.
■ Where voltage fluctuates a lot, such as that in factories.
■ In vehicles or vessels.
■ Where acidic or alkaline vapour is present.
BEFOREINSTALLATION
Installation
■Be sure to confirm the model name and the serial no. of the
outer (front) plates when attaching/detaching the plates to avoid
mistakes.
■When closing the service panels, take care that the tightening
torque does not exceed 4.1 N•m.
■In case ambient temperatures below 0°C are expected,
countermeasures need to be taken to prevent the water in the
unit from freezing. In such cases, we recommend to install the
heater tape option OP10 or we advise to put glycol in the
system. See "Protecting the water circuit against freezing" on
page 10. It is also allowed to drain the water from the system
when longer periods of standstill are expected.
Model
EWAQ and EWYQ units include optional special equipment
(insulation, heater tape,...) to ensure good operation in areas where
low ambient temperature can occur together with high humidity
conditions. In such conditions the units may experience problems
with severe ice build up on the aircooled coil. In case such conditions
are expected, the heater tape option OP10 must be installed instead.
Due to relatively large dimensions
and high weight, the handling of the
unit is only to be done by means of
lifting tools with slings. These slings
can be fitted into specially for this
purpose foreseen sleeves at the
base frame.
■To avoid injury, do not
touch the air inlet or
aluminium fins of the
unit.
■Do not use the grips
in the fan grills to
avoid damage.
OPHP
(b)
Installation manual
3
IMPORTANTINFORMATIONREGARDINGTHE
REFRIGERANTUSED
This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol. Do not vent gases into the atmosphere.
Refrigerant type:R410A
(1)
GWP
value:1975
(1)
GWP = global warming potential
The refrigerant quantity is indicated on the unit name plate
EWAQ+EWYQ009~011ACV3 + EWAQ+EWYQ009~013ACW1
Packaged air-cooled water chillers and packaged
reversible air to water heatpumps
4PW51587-1A
SELECTINGINSTALLATIONSITE
■Make sure to provide for adequate measures in order
to prevent that the unit be used as a shelter by small
animals.
■Small animals making contact with electrical parts can
cause malfunctions, smoke or fire. Please instruct the
customer to keep the area around the unit clean.
1Select an installation site where the following conditions are
satisfied and that meets with your customer's approval.
- Places which are well-ventilated.
- Places where the unit does not bother next-door neighbours.
- Safe places which can withstand the unit's weight and
vibration and where the unit can be installed level.
- Places where there is no possibility of flammable gas or
product leak.
- The equipment is not intended for use in a potentially
explosive atmosphere.
- Places where servicing space can be well ensured.
- Places where the units' piping and wiring lengths come within
the allowable ranges.
- Places where water leaking from the unit cannot cause
damage to the location (e.g. in case of a blocked drain pipe).
- Places where the rain can be avoided as much as possible.
2When installing the unit in a place exposed to strong wind, pay
special attention to the following.
Strong winds of 5 m/sec or more blowing against the unit's air
outlet causes short circuit (suction of discharge air), and this
may have the following consequences:
- Deterioration of the operational capacity.
-Frequent frost acceleration in heating operation.
- Disruption of operation due to rise of high pressure.
- When a strong wind blows continuously on the face of the
unit, the fan can start rotating very fast until it breaks.
Refer to the figures for installation of this unit in a place where
the wind direction can be foreseen.
■Tu rn the air outlet side toward the building's wall, fence or
screen.
5If you install the unit on a frame, please install a waterproof plate
within 150 mm of the underside of the unit in order to prevent the
invasion of water from the lower direction.
6When installing the unit in a place frequently exposed to snow,
pay special attention to elevate the foundation as high as
possible.
7If you install the unit on a building frame,
please install a waterproof plate (field
supply)(within 150 mm of the underside of
the unit). (See figure).
Selecting a location in cold climates
Refer to "Model" on page 3.
CAUTION
When operating the unit in a low outdoor ambient
temperature, be sure to follow the instructions described
below.
■To prevent exposure to wind, install the unit with its suction side
facing the wall.
■Never install the unit at a site where the suction side may be
exposed directly to wind.
■To prevent exposure to wind, install a baffle plate on the air
discharge side of the unit.
■In heavy snowfall areas it is very important to select an
installation site where the snow will not affect the unit. If lateral
snowfall is possible, make sure that the heat exchanger coil is
not affected by the snow (if necessary construct a lateral
canopy).
1Construct a large canopy.
2Construct a pedestal.
Install the unit high enough off the
ground to prevent burying in snow.
Make sure there is enough room to do the installation
■Set the outlet side at a right angle to the direction of the wind.
Strong wind
Blown airStrong wind
3Prepare a water drainage channel around the foundation, to
drain waste water from around the unit.
4If the water drainage of the unit is not easy, please build up the
unit on a foundation of concrete blocks, etc. (the height of the
foundation should be maximum 150 mm).
PRECAUTIONSONINSTALLATION
■Check the strength and level of the installation ground so that
the unit will not cause any operating vibration or noise after
installation.
■In accordance with the foundation drawing in the figure, fix the
unit securely by means of the foundation bolts. (Prepare four
sets of M12 foundation bolts, nuts and washers each which are
available on the market.)
■It is best to screw in the foundation bolts until their length are
20 mm from the foundation surface.
ACC
B
240955240
1435
ADischarge side
BBottom view (mm)
CDrain hole
345
380
20
EWAQ+EWYQ009~011ACV3 + EWAQ+EWYQ009~013ACW1
Packaged air-cooled water chillers and packaged
reversible air to water heatpumps
4PW51587-1A
Installation manual
4
Installation method for prevention of falling over
If it is necessary to prevent the unit from falling over, install as shown
in the figure.
■prepare all 4 wires as indicated in the drawing
■unscrew the top plate at the 4 locations indicated A and B
■put the screws through the nooses and screw them back tight
(B) In case of stacked installation
1.In case obstacles exist in front of the outlet side.
A
AA
B
C
ALocation of the 2 fixation holes on the front side of the unit
BLocation of the 2 fixation holes on the rear side of the unit
CWires: field supply
Installation servicing space
The numerical figures used in the figures represent the dimensions in
mm.
(Refer to "Precautions on installation" on page 4)
Precaution
(A) In case of non-stacked installation (See figure 1)
Suction side obstacle
Discharge side obstacle
Left side obstacle
Right side obstacle
Top side obstacle
Obstacle is present
✓
In these cases, close the
1
bottom of the installation
frame to prevent the
discharged air from
being bypassed
In these cases, only
2
2 units can be installed.
This situation is not
allowed
≥100
≥1000
2.In case obstacles exist in front of the air inlet.
A
≥100
≥300
Do not stack more than one unit.
About 100 mm is required as the dimension for laying the upper unit's
drain pipe. Get the portion A sealed so that air from the outlet does
not bypass.
(C) In case of multiple-row installation (for roof top use, etc.)
1.In case of installing one unit per row.
≥100
≥2000
≥200
≥1000
2.In case of installing multiple units (2 units or more) in lateral
connection per row.
NOTE
Installation manual
5
Minimum distance B1 in figure 1mentions the
space required for correct operation of the unit.
Required space for servicing though is 300 mm.
L
A
≥3000
H
≥600
≥1500
Relation of dimensions of H, A and L are shown in the table below.
LA
L≤H
H<LInstallation not allowed
0<L≤1/2H250
1/2H<L300
EWAQ+EWYQ009~011ACV3 + EWAQ+EWYQ009~013ACW1
Packaged air-cooled water chillers and packaged
reversible air to water heatpumps
4PW51587-1A
TYPICALAPPLICATIONEXAMPLES
Application 2
The application examples given below are for illustration purposes
only.
Application 1
Cooling and heating application (without room thermostat)
The digital controller (DC) is installed indoors and allows the user to
turn the unit (1) ON or OFF, to select between cooling and heating
mode (only in case of a heat pump model) and to set the water
temperature. When the unit is turned on, it will provide water at the
set temperature to the fan coil units (FCU1..3).
Cooling and heating application with a room thermostat suitable for
cooling/heating changeover connected to the unit.
T
62 3 451
7
FCU1
FCU2
FCU3
1Reversible heat pump7Shut-off valve
2Plate heat exchangerFCU1..3Fan coil unit
3Expansion vessel
4PumpTRoom thermostat or
5Shut-off valve
6Collector (field supply)
(field supply)
room thermostat with
cooling/heating switch
(field supply)
■Pump operation and heating and cooling (cooling and heating
application with a room thermostat suitable for cooling/heating
changeover connected to the unit)
According to the season, the customer will select cooling or
heating on the room thermostat (T). This selection is not
possible by operating the user interface.
When cooling/heating is requested by the room thermostat (T),
the pump will start operating and the unit will switch to “cooling
mode”/”heating mode”. The unit will start operating to achieve
the target leaving cold/hot water temperature.
The ON/OFF setting of the heating/cooling operation is done by
the room thermostat and cannot be done by the user interface
on the unit.
Make sure to connect the thermostat wires to the correct
terminals (see "Connection of the thermostat cable" on
page 13).
EWAQ+EWYQ009~011ACV3 + EWAQ+EWYQ009~013ACW1
Packaged air-cooled water chillers and packaged
reversible air to water heatpumps
4PW51587-1A
Installation manual
6
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