Daikin EWYD-BZ Series User manual

Installation,
maintenance
& operation
manual
EWYD-BZ
Inverter air to water
heat pumps
EWYD 250-580BZSS
EWYD 250-570BZSL
50Hz - Refrigerant: R-134a
D–EIMHP00508-16EN
REV 00
Date -
Supersedes -

IMPORTANT
This Manual is a technical aid and does not represent a binding offer for Daikin.
Daikin has drawn up this Manual to the best of its knowledge. The content cannot be held as explicitly or implicitly
guaranteed as complete, precise or reliable.
All data and specifications contained herein may be modified without notice. The data communicated at the moment
of the order shall hold firm.
Daikin shall assume no liability whatsoever for any direct or indirect damage, in the widest sense of the term,
ensuing from or connected with the use and/or interpretation of this Manual.
The entire content is protected by Daikin copyright.
WARNING
Before starting the installation of the unit, please read this manual carefully. Starting up the unit is absolutely
forbidden if all instructions contained in this manual are not clear.
Key to symbols
Important note: failure to respect the instruction can damage the unit or compromise operation
Note regarding safety in general or respect of laws and regulations
Note regarding electrical safety
Description of the labels applied to the electrical panel
Label Identification
1 – Non flammable gas symbol
6 – Cable tightening warning
2 – Manufacturer’s logo
7 – Water circuit filling warning
3 – Gas type
8 – Lifting instructions
4 – Electrical hazard symbol
9 – Unit nameplate data
5 – Hazardous Voltage warning
D-EIMHP00508-16EN - 2/64

Index
General information..........................................................................................................................................................5
Purpose of this manual...................................................................................................................................................5
Receiving the machine...................................................................................................................................................5
Checks ...........................................................................................................................................................................5
Nomenclature.................................................................................................................................................................6
Technical Specifications ..................................................................................................................................................7
Storage.........................................................................................................................................................................15
Operation......................................................................................................................................................................15
Mechanical installation...................................................................................................................................................17
Shipping .......................................................................................................................................................................17
Responsibility ...............................................................................................................................................................17
Safety...........................................................................................................................................................................17
Moving and lifting..........................................................................................................................................................17
Positioning and assembly.............................................................................................................................................18
Minimum space requirements ......................................................................................................................................19
Sound protection ..........................................................................................................................................................20
Water piping.................................................................................................................................................................20
Water treatment............................................................................................................................................................22
Evaporator and recovery exchangers anti-freeze protection........................................................................................22
Installing the flow switch...............................................................................................................................................22
Hydronic kit (optional)...................................................................................................................................................23
Electrical installation ......................................................................................................................................................28
General specifications..................................................................................................................................................28
Electrical components ..................................................................................................................................................28
Electrical wiring.............................................................................................................................................................28
Electrical heaters..........................................................................................................................................................28
Electrical power supply to the pumps ...........................................................................................................................29
Water pump control......................................................................................................................................................29
Alarm relays – Electrical wiring.....................................................................................................................................30
Unit On/ Off remote control – Electrical wiring..............................................................................................................30
Double Setpoint – Electrical wiring...............................................................................................................................30
External water Setpoint reset – Electrical wiring (Optional)..........................................................................................30
Unit limitation – Electrical wiring (Optional) ..................................................................................................................30
The VFD and related problems ....................................................................................................................................31
The operating principle of the VFD...............................................................................................................................32
The problem with harmonics ........................................................................................................................................32
Operation.........................................................................................................................................................................35
Operator’s responsibilities ............................................................................................................................................35
Description of the machine...........................................................................................................................................35
Description of the refrigeration cycle ............................................................................................................................35
Description of the refrigeration cycle with heat recovery ..............................................................................................37
Controlling the heat recovery circuit and installation recommendations .......................................................................37
Compressor..................................................................................................................................................................39
Compression process...................................................................................................................................................39
Cooling capacity control ...............................................................................................................................................41
Pre-startup checks..........................................................................................................................................................43
Units with an external water pump................................................................................................................................44
Units with a built-in water pump....................................................................................................................................44
Electrical power supply.................................................................................................................................................44
Unbalance in power supply voltage..............................................................................................................................44
Power supply of electrical heaters................................................................................................................................45
Startup procedure...........................................................................................................................................................46
Turning on the machine................................................................................................................................................46
Selecting an operating mode........................................................................................................................................47
Shutdown for a long time..............................................................................................................................................47
Starting up after seasonal shutdown ............................................................................................................................47
System maintenance.......................................................................................................................................................48
General.........................................................................................................................................................................48
Compressor maintenance ............................................................................................................................................48
Lubrication....................................................................................................................................................................48
Routine maintenance....................................................................................................................................................49
Replacement of filter dryer ...........................................................................................................................................50
Procedure to replace the filter dryer cartridge ..............................................................................................................50
Replacement of the oil filter..........................................................................................................................................51
Procedure to replace oil filter........................................................................................................................................51
Procedure to replenish refrigerant................................................................................................................................53
Standard checks .............................................................................................................................................................54
D-EIMHP00508-16EN - 3/64

Temperature and pressure sensors..............................................................................................................................54
Test sheet ........................................................................................................................................................................55
Water side measurements............................................................................................................................................55
Refrigerant side measurements ...................................................................................................................................55
Electrical measurements..............................................................................................................................................55
Service and limited warranty..........................................................................................................................................56
Periodic obligatory checks and starting up of appliances under pressure...............................................................57
Important information regarding the refrigerant used.................................................................................................58
Disposal........................................................................................................................................................................60
Index of tables
Table 1 - Acceptable water quality limits…………………………………………………………………………………………22
Table 2 - Electrical data of optional pumps…………………………………………………………………………………….29
Table 3 - Typical working conditions with compressors at 100%..............................................................................46
Table 4 - Routine maintenance programme……………………………………………………………………………………49
Table 5 - Pressure/ Temperature……………………………………………………………………………………………….53
Index of figures
Figure 1 - Operating limits in cooling mode - EWYD~BZSS / EWYD~BZSL………………………………………............16
Figure 2 - Operating limits in heating mode - EWYD~BZSS / EWYD~BZSL……………………………………………….16
Figure 3 - Lifting the unit………………………………………………………………………………………………………….18
Figure 4 - Minimum clearance requirements for machine maintenance …………………………………………………….19
Figure 5 - Minimum recommended installation clearances……………………………………………………………………20
Figure 6 - Water piping connection for evaporator………………………………………………………………………….....21
Figure 7 - Water piping connection for heat recovery exchangers…………………………………………………………..21
Figure 8 - Adjusting the safety flow switch……………………………………………………………………………………..23
Figure 9 - Single- and twin-pump hydronic kit………………………………………………………………………………….23
Figure 10 - Low lift water pumps kit (option on request) - Lift diagrams …………………………………………………….24
Figure 11 - High lift water pumps kit (option on request) - Lift diagrams ……………………………………………………...25
Figure 12 - Evaporator pressure drop…………………………………………………………………………………………..26
Figure 13 - Partial heat recovery pressure drop……………………………………………………………………………….27
Figure 14 - User connection to the interface M3 terminal boards…………………………………………………………….31
Figure 15 - Power absorbed by the compressor depending on the load …………………………………………………….32
Figure 16 - Typical diagram of a VFD…………………………………………………………………………………………..33
Figure 17 - Harmonics on the grid………………………………………………………………………………………………33
Figure 18 - Harmonic content with and without line inductance ………………………………………………………………34
Figure 19 - Harmonic content varying according to the percentage of non-linear loads…………………………………..34
Figure 20 - Refrigeration cycle……………………………………………………………………………………………………36
Figure 21 - Refrigeration cycle with partial heat recovery……………………………………………………………………..38
Figure 22 - Picture of Fr3100 compressor……………………………………………………………………………………..39
Figure 23 - Compression process……………………………………………………………………………………………….40
Figure 24 - Capacity control mechanism for Fr3100 compressor…………………………………………………………….41
Figure 25 - Continuously variable capacity control for Fr3100 compressor…………………………………………………42
Figure 26 - Installation of control devices for Fr3100 compressor…………………………………………………………..49
Figure 27 - Front and back views for Fr3100 ……………………………………………………………………………………52
D-EIMHP00508-16EN - 4/64

General information
ATTENTION
The units described in the present manual represent a high value investment, maximum care should be taken to
ensure correct installation and appropriate working conditions.
Installation and maintenance must be performed by qualified and specifically trained personnel only.
Correct maintenance of the unit is indispensable for its safety and reliability. Manufacturer’s service centres are the
only having adequate technical skill for maintenance.
ATTENTION
This manual provides information about the features and standard procedures for the complete series.
All the units are delivered from factory as complete sets which include wiring diagrams, inverter manuals,
dimensional drawings with dimensions and weight, nameplate with technical characteristics attached to the unit.
WIRING DIAGRAMS, INVERTER MANUALS, DIMENSIONAL DRAWINGS AND NAMEPLATE MUST BE
CONSIDERED ESSENTIAL DOCUMENTS AND AS A PART OF THIS MANUAL
In case of any discrepancy between this manual and the equipment’s document refer to on board documents.
For any doubt ask Daikin or authorized centers
Purpose of this manual
The purpose of this manual is to allow the installer and the qualified operator to carry out required operations in order to
ensure proper installation and maintenance of the machine, without any risk to people, animals and/or objects.
This manual is an important supporting document for qualified and trained personnel but it is not intended to replace
such personnel.
All activities must be carried out in compliance with local laws and regulations.
Receiving the machine
The machine must be inspected for any possible damage immediately upon reaching its final place of installation. All
components described in the delivery note must be carefully inspected and checked; any damage must be reported to
the carrier. Before connecting the machine to earth, check that the model and power supply voltage shown on the
nameplate are correct. Responsibility for any damage after acceptance of the machine cannot be attributed to the
manufacturer.
Checks
To prevent the possibility of incomplete delivery (missing parts) or transportation damage, please perform the following
checks upon receipt of the machine:
a) Before accepting the machine, please verify shipment documensts and chechs the number of shipped items
b) Check every single component in the consignment for missing parts or for any damage.
c) In the event that the machine has been damaged, do not remove the damaged material. A set of photographs are
helpful in ascertaining responsibility.
d) Immediately report the extent of the damage to the transportation company and request that they inspect the
machine.
e) Immediately report the extent of the damage to the manufacturer representative, so that arrangements can be
made for the required repairs. In no case must the damage be repaired before the machine has been inspected
by the representative of the transportation company.
D-EIMHP00508-16EN - 5/64

Nomenclature
E W Y D 2 0 0 B Z S L
1 2 3 4 5 6 7 8 9 10 11
Machine type
EWA = Air-cooled chiller, cooling only
EWY = Air-cooled chiller, heat pump
EWL = Remote condenser chiller
ERA = Air cooled condensing unit
EWW = Water-cooled chiller, cooling only
EWC = Air-cooled chiller, cooling only with centrifugal fan
EWT = Air-cooled chiller, cooling only with heat recovery
Refrigerant
D = R-134a
P = R-407c
Q = R-410a
Capacity class in kW (Cooling)
Always 3-digit code
Idem as previous
Model series
Letter A, B,… : major modification
Inverter
- = Non-inverter
Z = Inverter
Efficiency level (McQuay code)
S = Standard efficiency (SE)
X = High efficiency (XE) (N.A for this range)
P = Premium efficiency (PE) (N.A for this range)
H = High ambient (HA) (N.A for this range)
Sound level (McQuay code)
S = Standard noise (ST)
L = Low noise (LN)
R = Reduced noise (XN) (N.A for this range)
X = Extra low noise (XXN) (N.A for this range)
C = Cabinet (CN) (N.A for this range)
D-EIMHP00508-16EN - 6/64

Technical Specifications
TECHNICAL SPECIFICATIONS
250 270 290 320 340
kW 254 273 292 324 339
kW 270 297 324 333 349
---
%13 13 13 13 13
kW 90.3 100 109 116 124
kW 90.4 99 107 117 124
--- 2.81 2.74 2.69 2.79 2.74
--- 2.98 2.99 3.03 2.84 2.80
--- 4.05 4.04 4.01 4.07 4.01
--- 4.58 4.62 4.62 4.75 4.64
---
---
Height mm 2335 2335 2335 2335 2335
Width mm 2254 2254 2254 2254 2254
Length mm 3547 3547 3547 4381 4381
kg 3410 3455 3500 3870 3870
kg 3550 3595 3640 4010 4010
---
l138 138 138 133 133
Cooling l/s 12.12 13.03 13.94 15.46 16.21
Heating l/s 12.89 14.18 15.49 15.89 16.66
Cooling kPa 37 42 48 53 58
Heating kPa 42 49 58 55 60
Air heat exchanger ---
---
---
mm 800 800 800 800 800
l/s 31728 31728 31728 42304 42304
Quantity No. 6 6 6 8 8
Speed rpm 920 920 920 920 920
Motor input W 1.75 1.75 1.75 1.75 1.75
---
l26 26 26 26 26
No. 2 2 2 2 2
Cooling dB(A) 100.5 100.5 100.5 101.2 101.2
Heating dB(A) 100.5 100.5 100.5 101.2 101.2
Cooling dB(A) 82.1 82.1 82.1 82.3 82.3
Heating dB(A) 82.1 82.1 82.3 82.3 82.3
--- R-134a R-134a R-134a R-134a R-134a
kg. 88 94 100 118 118
No. 2 2 2 2 2
Piping connections mm 139.7 139.7 139.7 139.7 139.7
Notes (1)
Notes (2)
Notes (3)
Nominal water flow rate
Nominal Water pressure drop
Sound level
Sound Power
EWYD~BZSS
Cooling
Capacity control
Type
Heating
Capacity (1) (2)
Stepless
Minimum capacity
Cooling
EER (1)
Heating
Unit power input (1) (2)
ESEER
IPLV
Casing
Colour
Ivory White
Material
Galvanized and painted steel sheet
Dimensions
Unit
Weight
Unit
Operating Weight
Water heat exchanger
Type
Single Pass Shell&Tube
Water volume
Nominal water flow rate
Nominal Water pressure drop
Insulation material
Closed cell
Type
High efficiency fin and tube type
with integral subcooler
Fan
Type
Direct propeller type
Drive
DOL
Diameter
Nominal air flow
Model
Compressor
Type
Semi-hermetic single screw
compressor Inverter driven
Oil charge
Quantity
Evaporator water inlet/outlet
Low oil pressure
Low pressure ratio
Phase monitor
Compressor overload (Kriwan)
High discharge temperature
Cooling capacity, unit power input in cooling and EER are based on the following conditions: evaporator 12/7°C; ambient
35°C, unit at full load operation.
The values are according to ISO 3744 and are referred to: evaporator 12/7°C, ambient 35°C, full load operation.
Refrigerant circuit
Refrigerant type
Refrigerant charge
N. of circuits
Heating capacity, unit power input in heating and COP are based on the following conditions: condenser 40/45°C; ambient
7°C DB, unit at full load operation.
COP (2)
Sound Pressure (3)
High discharge pressure (pressure switch)
High discharge pressure (pressure transducer)
Low suction pressure (pressure transducer)
High oil filter pressure drop
Safety devices
D-EIMHP00508-16EN - 7/64

TECHNICAL SPECIFICATIONS
370 380 410 440 460
kW 365 382 413 436 457
kW 379 410 443 463 475
---
%13 13 13 13 9
kW 134 142 152 163 161
kW 132 141 155 165 164
--- 2.73 2.68 2.72 2.68 2.83
--- 2.87 2.90 2.85 2.81 2.90
--- 4.02 3.94 4.03 4.01 4.31
--- 4.71 4.67 4.73 4.69 4.85
---
---
Height mm 2335 2335 2335 2335 2335
Width mm 2254 2254 2254 2254 2254
Length mm 4381 4381 5281 5281 6583
kg 3940 4010 4390 4390 5015
kg 4068 4138 4518 4518 5255
---
l128 128 128 128 240
Cooling l/s 17.42 18.25 19.72 20.81 21.83
Heating l/s 18.11 19.57 21.15 22.14 22.68
Cooling kPa 53 57 46 51 61
Heating kPa 57 65 52 57 66
Air heat exchanger ---
---
---
mm 800 800 800 800 800
l/s 42304 42304 52880 52880 63456
Quantity No. 8 8 10 10 12
Speed rpm 920 920 920 920 920
Motor input W 1.75 1.75 1.75 1.75 1.75
---
l26 26 26 26 39
No. 2 2 2 2 3
Cooling dB(A) 101.2 101.2 101.8 101.8 103.6
Heating dB(A) 101.2 101.2 101.8 101.8 103.6
Cooling dB(A) 82.3 82.3 82.5 82.5 83.7
Heating dB(A) 82.3 82.5 82.5 83.7 83.7
--- R-134a R-134a R-134a R-134a R-134a
kg. 121 124 148 148 177
No. 2 2 2 2 3
Piping connections mm 139.7 139.7 139.7 139.7 219.1
Notes (1)
Notes (2)
Notes (3)
Safety devices
Capacity (1)
Heating
Unit power input (1)
Heating
Heating capacity, unit power input in heating and COP are based on the following conditions: condenser 40/45°C; ambient
7°C DB, unit at full load operation.
Cooling capacity, unit power input in cooling and EER are based on the following conditions: evaporator 12/7°C; ambient
35°C, unit at full load operation.
The values are according to ISO 3744 and are referred to: evaporator 12/7°C, ambient 35°C, full load operation.
High oil filter pressure drop
Phase monitor
Low oil pressure
Low pressure ratio
Compressor overload (Kriwan)
High discharge temperature
High discharge pressure (pressure transducer)
Low suction pressure (pressure transducer)
High discharge pressure (pressure switch)
Refrigerant circuit
Refrigerant type
Refrigerant charge
N. of circuits
Evaporator water inlet/outlet
Oil charge
Compressor
Quantity
Sound level
Sound Power
Type
Semi-hermetic single screw
compressor Inverter driven
DOL
Sound Pressure (3)
Nominal air flow
Model
Closed cell
Type
High efficiency fin and tube type
with integral subcooler
Insulation material
Diameter
Direct propeller type
Type
Single Pass Shell&Tube
Water volume
Fan
Type
Drive
Water heat exchanger
Weight
Unit
Operating Weight
Dimensions
Unit
Casing
ESEER
COP (2)
IPLV
Cooling
EER (1)
Cooling
Capacity control
Type
EWYD~BZSS
Minimum capacity
Colour
Ivory White
Material
Galvanized and painted steel sheet
Stepless
Nominal water flow rate
Nominal Water pressure drop
D-EIMHP00508-16EN - 8/64

TECHNICAL SPECIFICATIONS
510 520 580
kW 505 522 583
kW 530 558 615
---
% 9 9 9
kW 178 186 215
kW 176 184 205
--- 2.83 2.81 2.71
--- 3.02 3.04 3.00
--- 4.13 4.13 4.05
--- 4.89 4.85 4.78
---
---
Height mm 2335 2335 2335
Width mm 2254 2254 2254
Length mm 6583 6583 6583
kg 5495 5735 5735
kg 5724 5964 5953
---
l229 229 218
Cooling l/s 24.11 24.92 27.87
Heating l/s 25.33 26.65 29.39
Cooling kPa 50 53 65
Heating kPa 55 60 71
Air heat exchanger ---
---
---
mm 800 800 800
l/s 63456 63456 63456
Quantity No. 12 12 12
Speed rpm 920 920 920
Motor input W 1.75 1.75 1.75
---
l39 39 39
No. 3 3 3
Cooling dB(A) 103.6 103.6 103.6
Heating dB(A) 103.6 103.6 103.6
Cooling dB(A) 83.7 83.7 83.7
Heating dB(A) 83.7 83.7 83.7
--- R-134a R-134a R-134a
kg. 183 186 186
No. 3 3 3
Piping connections mm 219.1 219.1 219.1
Notes (1)
Notes (2)
Notes (3)
Safety devices
Heating capacity, unit power input in heating and COP are based on the following conditions:
condenser 40/45°C; ambient 7°C DB, unit at full load operation.
Cooling capacity, unit power input in cooling and EER are based on the following conditions:
evaporator 12/7°C; ambient 35°C, unit at full load operation.
The values are according to ISO 3744 and are referred to: evaporator 12/7°C, ambient 35°C, full
load operation.
High discharge pressure (pressure transducer)
Low suction pressure (pressure transducer)
Compressor overload (Kriwan)
High discharge temperature
Low oil pressure
Low pressure ratio
High oil filter pressure drop
Phase monitor
Evaporator water inlet/outlet
Refrigerant circuit
Refrigerant type
Refrigerant charge
N. of circuits
Sound Power
Sound Pressure (3)
Nominal air flow
Model
Type
Oil charge
Quantity
Sound level
Compressor
Type
Drive
Diameter
Insulation material
Type
Nominal Water pressure drop
Type
Water volume
Nominal water flow rate
Water heat exchanger
Fan
Weight
Unit
Operating Weight
Dimensions
Unit
IPLV
Casing
Colour
Material
EER (1)
ESEER
COP (2)
Type
Minimum capacity
Cooling
Unit power input (1)
Heating
Capacity control
Capacity (1)
EWYD~BZSS
Cooling
Ivory White
Galvanized and painted steel sheet
Single Pass Shell&Tube
Semi-hermetic single screw
compressor Inverter driven
Heating
Closed cell
High efficiency fin and tube type
with integral subcooler
Direct propeller type
DOL
Stepless
High discharge pressure (pressure switch)
D-EIMHP00508-16EN - 9/64

ELECTRICAL SPECIFICATIONS
250 270 290 320 340
--- 3 3 3 3 3
Hz 50 50 50 50 50
V400 400 400 400 400
Minimum % -10% -10% -10% -10% -10%
Maximum % +10% +10% +10% +10% +10%
A217 217 217 264 296
A150 167 181 196 209
153 167 178 197 210
A238 238 238 285 324
A262 262 262 314 356
A 4 4 4 4 4
A 4 4 4 4 4
No.
3 3 3 3 3
V400 400 400 400 400
Minimum % -10% -10% -10% -10% -10%
Maximum % +10% +10% +10% +10% +10%
A 107+107 107+107 107+107 107+146 146+146
---
ELECTRICAL SPECIFICATIONS
370 380 410 440 460
--- 3 3 3 3 3
Hz 50 50 50 50 50
V400 400 400 400 400
Minimum % -10% -10% -10% -10% -10%
Maximum % +10% +10% +10% +10% +10%
A296 296 334 358 328
A224 237 255 273 271
222 235 260 276 275
A324 324 362 392 369
A356 356 398 431 406
A 4 4 4 4 4
A 4 4 4 4 4
No.
3 3 3 3 3
V400 400 400 400 400
Minimum % -10% -10% -10% -10% -10%
Maximum % +10% +10% +10% +10% +10%
A 146+146 146+146 146+176 176+176 107+107+107
---
ELECTRICAL SPECIFICATIONS
510 520 580
--- 3 3 3
Hz 50 50 50
V400 400 400
Minimum % -10% -10% -10%
Maximum % +10% +10% +10%
A398 430 430
A300 313 357
296 309 342
A447 486 486
A492 535 535
A 4 4 4
A 4 4 4
No.
3 3 3
V400 400 400
Minimum % -10% -10% -10%
Maximum % +10% +10% +10%
A146+146+107 146+146+146 146+146+146
---
Fans
Nominal running current in heating
Fans
Nominal running current in heating
Unit
Maximum starting current
Nominal running current cooling
EWYD~BZSS
Maximum running current
Starting method
Nominal running current in heating
Fans
Power Supply
Phase
Frequency
Voltage
Maximum running current
Nominal running current in cooling
Maximum current for wires sizing
Maximum starting current
Maximum current for wires sizing
Nominal running current in cooling
Nominal running current cooling
Maximum running current
Voltage Tolerance
VFD
EWYD~BZSS
Compressor
Phase
Unit
Voltage
Voltage Tolerance
Nominal running current in cooling
Power Supply
Phase
Frequency
Voltage
Voltage Tolerance
Unit
Maximum starting current
Nominal running current cooling
Maximum running current
Maximum current for wires sizing
Compressor
Phase
Voltage
Voltage Tolerance
Maximum running current
Starting method
Power Supply
Phase
Frequency
Voltage
VFD
Voltage Tolerance
Compressor
Phase
Voltage
Starting method
EWYD~BZSS
Maximum running current
Voltage Tolerance
VFD
Nominal current in heating mode is referred to installation with 25kA short circuit current and is based on the following conditions:
condenser 40°C/45°C; ambient 7°C DB/6°C WB + fans current.
Notes
Allowed voltage tolerance ± 10%. Voltage unbalance between phases must be within ± 3%.
Maximum starting current: starting current of biggest compressor + current of the compressor at 75% maximum load + fans current for
the circuit at 75%.
Nominal current in cooling mode is referred to the following conditions: evaporator 12°C/7°C; ambient 35°C; compressors + fans current.
Maximum running current is based on max compressor absorbed current in its envelope and max fans absorbed current
Maximum current for wires sizing: (compressors full load ampere + fans current) x 1,1.
D-EIMHP00508-16EN - 10/64

TECHNICAL SPECIFICATIONS
250 270 290 320 330
kW 248 266 291 316 331
kW 270 297 324 333 349
---
%13 13 13 13 13
kW 88.5 98 109 113 122
kW 90.4 99 107 117 124
--- 2.80 2.70 2.66 2.79 2.72
--- 2.98 2.99 3.03 2.84 2.80
--- 4.18 4.16 4.11 4.29 4.18
--- 4.84 4.86 4.80 4.97 4.87
---
---
Height mm 2335 2335 2335 2335 2335
Width mm 2254 2254 2254 2254 2254
Length mm 3547 3547 3547 4381 4381
kg 3750 3795 3840 4210 4210
kg 3888 3933 3978 4343 4343
---
l138 138 138 133 133
Cooling l/s 11.83 12.70 13.89 15.12 15.83
Heating l/s 12.89 14.18 15.49 15.89 16.66
Cooling kPa 36 40 48 51 55
Heating kPa 42 49 58 55 60
Air heat exchanger ---
---
---
mm 800 800 800 800 800
Cooling l/s 24432 24432 24432 32576 32576
Heating l/s 31728 31728 31728 42304 42304
Quantity No. 6 6 6 8 8
rpm 715 (920) 715 (920) 715 (920) 715 (920) 715 (920)
W 0.78 (1.75) 0.78 (1.75) 0.78 (1.75) 0.78 (1.75) 0.78 (1.75)
---
l26 26 26 26 26
No. 2 2 2 2 2
Cooling dB(A) 94.0 94.0 94.0 94.7 94.7
Heating dB(A) 94.9 94.9 94.9 96.1 96.1
Cooling dB(A) 75.6 75.6 75.6 75.8 75.8
Heating dB(A) 76.5 76.5 76.5 77.2 77.2
--- R-134a R-134a R-134a R-134a R-134a
kg. 88 94 100 118 118
No. 2 2 2 2 2
Piping connections mm 139.7 139.7 139.7 139.7 139.7
Notes (1)
Notes (2)
Notes (3)
Safety devices
High discharge temperature
Low oil pressure
Low pressure ratio
High oil filter pressure drop
Compressor
Refrigerant circuit
Sound Power
Sound Pressure (3)
Refrigerant type
Refrigerant charge
N. of circuits
EWYD~BZSL
Cooling
Capacity control
Type
Heating
Capacity (1) (2)
Stepless
Minimum capacity
Cooling
EER (1)
Heating
Unit power input (1) (2)
ESEER
IPLV
Casing
Colour
Ivory White
Material
Galvanized and painted steel sheet
Dimensions
Unit
Weight
Unit
Operating Weight
Sound level
Nominal water flow rate
Water heat exchanger
Type
Single Pass Shell&Tube
Water volume
Insulation material
Closed cell
Nominal Water pressure drop
Semi-hermetic
single screw compressor
Oil charge
Quantity
Type
High efficiency fin and tube type
with integral subcooler
Type
Direct propeller type
Drive
DOL
Diameter
Evaporator water inlet/outlet
High discharge pressure (pressure switch)
High discharge pressure (pressure transducer)
Low suction pressure (pressure transducer)
Compressor overload (Kriwan)
Phase monitor
Cooling capacity, unit power input in cooling and EER are based on the following conditions: evaporator 12/7°C; ambient
35°C, unit at full load operation.
The values are according to ISO 3744 and are referred to: evaporator 12/7°C, ambient 35°C, full load operation.
Heating capacity, unit power input in heating and COP are based on the following conditions: condenser 40/45°C; ambient
7°C DB, unit at full load operation.
COP (2)
Type
Fan
Nominal air flow
Model
Speed - Cooling (Heating)
Motor input - Cooling (Heating)
D-EIMHP00508-16EN - 11/64

TECHNICAL SPECIFICATIONS
360 370 400 430 450
kW 355 372 403 425 448
kW 379 410 443 463 475
---
%13 13 13 13 9
kW 132 142 149 161 156
kW 132 141 155 165 164
--- 2.68 2.62 2.71 2.64 2.87
--- 2.87 2.90 2.85 2.81 2.90
--- 4.16 4.13 4.19 4.14 4.31
--- 4.87 4.84 4.91 4.86 5.04
---
---
Height mm 2335 2335 2335 2335 2335
Width mm 2254 2254 2254 2254 2254
Length mm 4381 4381 5281 5281 6583
kg 4280 4350 4730 4730 5525
kg 4408 4478 4858 4858 5765
---
l128 128 128 128 240
Cooling l/s 16.98 17.77 19.28 20.30 21.39
Heating l/s 18.11 19.57 21.15 22.14 22.68
Cooling kPa 50.32 54.62 44.07 48.40 59.16
Heating kPa 57 65 52 57 66
Air heat exchanger ---
---
---
mm 800 800 800 800 800
Cooling l/s 32576 32576 40720 40720 48864
Heating l/s 42304 42304 52880 52880 63456
Quantity No. 8 8 10 10 12
rpm 715 (920) 715 (920) 715 (920) 715 (920) 715 (920)
W 0.78 (1.75) 0.78 (1.75) 0.78 (1.75) 0.78 (1.75) 0.78 (1.75)
---
l26 26 26 26 39
No. 2 2 2 2 3
Cooling dB(A) 94.7 94.7 95.3 95.3 97.0
Heating dB(A) 96.1 96.1 96.7 96.7 98.4
Cooling dB(A) 75.8 75.8 76.0 76.0 77.2
Heating dB(A) 77.2 77.2 77.4 77.4 78.6
--- R-134a R-134a R-134a R-134a R-134a
kg. 121 124 148 148 177
No. 2 2 2 2 3
Piping connections mm 139.7 139.7 139.7 139.7 219.1
Notes (1)
Notes (2)
Notes (3)
Safety devices
Nominal air flow
Sound level
Sound Power
Sound Pressure (3)
EWYD~BZSL
Capacity control
Stepless
Minimum capacity
Cooling
Type
EER (1)
ESEER
COP (2)
IPLV
Casing
Colour
Ivory White
Material
Galvanized and painted steel sheet
Dimensions
Unit
Weight
Unit
Operating Weight
Water heat exchanger
Type
Single Pass Shell&Tube
Water volume
High efficiency fin and tube type
with integral subcooler
Insulation material
Nominal water flow rate
Nominal Water pressure drop
Closed cell
Direct propeller type
Drive
DOL
Fan
Type
Refrigerant charge
Semi-hermetic
single screw compressor
Oil charge
Compressor
Quantity
High discharge pressure (pressure transducer)
Low suction pressure (pressure transducer)
Low oil pressure
Low pressure ratio
Compressor overload (Kriwan)
High discharge temperature
High oil filter pressure drop
N. of circuits
Evaporator water inlet/outlet
High discharge pressure (pressure switch)
Refrigerant circuit
Refrigerant type
Phase monitor
Cooling capacity, unit power input in cooling and EER are based on the following conditions: evaporator 12/7°C; ambient
35°C, unit at full load operation.
The values are according to ISO 3744 and are referred to: evaporator 12/7°C, ambient 35°C, full load operation.
Heating capacity, unit power input in heating and COP are based on the following conditions: condenser 40/45°C; ambient
7°C DB, unit at full load operation.
Capacity (1) (2)
Heating
Unit power input (1) (2)
Heating
Cooling
Diameter
Motor input - Cooling (Heating)
Type
Type
Model
Speed - Cooling (Heating)
D-EIMHP00508-16EN - 12/64

TECHNICAL SPECIFICATIONS
490 510 570
kW 493 510 567
kW 530 558 615
---
% 9 9 9
kW 174 183 214
kW 176 184 205
--- 2.83 2.79 2.65
--- 3.02 3.04 3.00
--- 4.29 4.23 4.10
--- 5.01 4.96 4.83
---
---
Height mm 2335 2335 2335
Width mm 2254 2254 2254
Length mm 6583 6583 6583
kg 6005 6245 6245
kg 6234 6474 6463
---
l229 229 218
Cooling l/s 23.56 24.34 27.11
Heating l/s 25.33 26.65 29.39
Cooling kPa 48 51 62
Heating kPa 55 60 71
Air heat exchanger ---
---
---
mm 800 800 800
Cooling l/s 48864 48864 48864
Heating l/s 63456 63456 63456
Quantity No. 12 12 12
rpm 715 (920) 715 (920) 715 (920)
W 0.78 (1.75) 0.78 (1.75) 0.78 (1.75)
---
l39 39 39
No. 3 3 3
Cooling dB(A) 97.0 97.0 97.0
Heating dB(A) 98.4 98.4 98.4
Cooling dB(A) 77.2 77.2 77.2
Heating dB(A) 78.6 78.6 78.6
--- R-134a R-134a R-134a
kg. 183 186 186
No. 3 3 3
Piping connections mm 219.1 219.1 219.1
Notes (1)
Notes (2)
Notes (3)
Safety devices
Nominal air flow
Heating capacity, unit power input in heating and COP are based on the following conditions:
condenser 40/45°C; ambient 7°C DB, unit at full load operation.
High discharge pressure (pressure switch)
Semi-hermetic
single screw compressor
Heating
Nominal water flow rate
Nominal Water pressure drop
High efficiency fin and tube type
with integral subcooler
Direct propeller type
DOL
Ivory White
Galvanized and painted steel sheet
Single Pass Shell&Tube
Closed cell
Sound Power
Sound Pressure (3)
Type
Minimum capacity
EWYD~BZSL
Cooling
Stepless
Capacity control
Capacity (1)
COP (2)
Cooling
Unit power input (1)
Heating
Unit
Operating Weight
Casing
Colour
Material
Dimensions
Weight
Speed - Cooling (Heating)
Motor input - Cooling (Heating)
Fan
Type
Water volume
Insulation material
Type
Drive
Diameter
Model
Oil charge
Quantity
Compressor
Refrigerant type
Refrigerant charge
N. of circuits
High discharge temperature
Low oil pressure
Low pressure ratio
High oil filter pressure drop
Sound level
Refrigerant circuit
Cooling capacity, unit power input in cooling and EER are based on the following conditions:
evaporator 12/7°C; ambient 35°C, unit at full load operation.
The values are according to ISO 3744 and are referred to: evaporator 12/7°C, ambient 35°C, full
load operation.
Phase monitor
High discharge pressure (pressure transducer)
Low suction pressure (pressure transducer)
Compressor overload (Kriwan)
Evaporator water inlet/outlet
Type
IPLV
EER (1)
ESEER
Water heat exchanger
Type
Unit
D-EIMHP00508-16EN - 13/64

ELECTRICAL SPECIFICATIONS
250 270 290 320 330
--- 33333
Hz 50 50 50 50 50
V400 400 400 400 400
Minimum % -10% -10% -10% -10% -10%
Maximum % +10% +10% +10% +10% +10%
A208 208 208 252 284
A149 160 147 153 167
A153 167 178 197 210
A238 238 238 285 324
A262 262 262 314 356
A 3 3 3 3 3
A 4 4 4 4 4
No.
33333
V400 400 400 400 400
Minimum % -10% -10% -10% -10% -10%
Maximum % +10% +10% +10% +10% +10%
A 107+107 107+107 107+107 107+146 146+146
---
ELECTRICAL SPECIFICATIONS
360 370 400 430 450
--- 33333
Hz 50 50 50 50 50
V400 400 400 400 400
Minimum % -10% -10% -10% -10% -10%
Maximum % +10% +10% +10% +10% +10%
A285 284 319 343 310
A178 192 200 219 232
A222 235 260 276 275
A324 324 362 392 369
A356 356 398 431 406
A 3 3 3 3 3
A 4 4 4 4 4
No.
33333
V400 400 400 400 400
Minimum % -10% -10% -10% -10% -10%
Maximum % +10% +10% +10% +10% +10%
A 146+146 146+146 146+176 176+176 107+107+107
---
ELECTRICAL SPECIFICATIONS
490 510 570
--- 333
Hz 50 50 50
V400 400 400
Minimum % -10% -10% -10%
Maximum % +10% +10% +10%
A380 412 412
A255 269 311
A296 309 342
A447 486 486
A492 535 535
A 3 3 3
A 4 4 4
No.
333
V400 400 400
Minimum % -10% -10% -10%
Maximum % +10% +10% +10%
A146+146+107 146+146+146 146+146+146
---
EWYD~BZSL
Power Supply
Phase
Frequency
Voltage
Voltage Tolerance
Unit
Maximum starting current
Nominal running current cooling
Nominal running current heating
Maximum running current
Maximum current for wires sizing
Fans
Nominal running current in cooling
Nominal running current in heating
Compressor
Phase
Voltage
Voltage Tolerance
Maximum running current
Starting method
VFD
EWYD~BZSL
Power Supply
Phase
Frequency
Voltage
Voltage Tolerance
Unit
Maximum starting current
Nominal running current cooling
Nominal running current heating
Maximum running current
Maximum current for wires sizing
Fans
Nominal running current in cooling
Nominal running current in heating
Compressor
Phase
Voltage
Voltage Tolerance
Maximum running current
Starting method
VFD
EWYD~BZSL
Power Supply
Phase
Frequency
Voltage
Voltage Tolerance
Unit
Maximum starting current
Nominal running current cooling
Nominal running current heating
Maximum running current
Maximum current for wires sizing
Fans
Nominal running current in cooling
Nominal running current in heating
Compressor
Phase
Voltage
Voltage Tolerance
Maximum running current
Starting method
VFD
Notes
Allowed voltage tolerance ± 10%. Voltage unbalance between phases must be within ± 3%.
Maximum starting current: starting current of biggest compressor + current of the compressor at 75% maximum load + fans current for
thecircuit at 75%.
Nominal current in cooling mode is referred to installation with 25kA short circuit current and is based on the following conditions:
evaporator 12°C/7°C; ambient 35°C.compressor + fans current.
Nominal current in heating mode is referred to installation with 25kAshort circuit current and is based on the following conditions:
condenser 40°C / 45°C; ambient 7°C DB/6°C WB + fans current.
Maximum running current is based on max compressor absorbed current in its envelope and max fans absorbed current
Maximum current for wires sizing: (compressors full load ampere + fans current) x 1,1.
D-EIMHP00508-16EN - 14/64

Operating limits
Storage
The environmental conditions must be within the following limits:
Minimum ambient temperature : -20°C
Maximum ambient temperature : 57°C
Maximum R.H. : 95% not condensing
ATTENTION
Storing below the minimum temperature mentioned above may cause damage to components such as the electronic
controller and its LCD display.
WARNING
Storing above the maximum temperature may cause opening of the safety valves on the compressors’ suction line.
ATTENTION
Storing in condensing atmosphere may damage the electronic components.
Operation
Operation is allowed within the limits mentioned in the following diagrams
.
ATTENTION
Operation out of the mentioned limits may damage the unit.
For any doubts contact the factory.
ATTENTION
The maximum operating altitude is 2,000 m above sea level.
Please contact the factory if the equipment is to be operated at altitudes of between 1,000 and 2,000 m above sea
level.
D-EIMHP00508-16EN - 15/64

Figure 1 - Operating limits in cooling mode - EWYD~BZSS / EWYD~BZSL
Figure 2 - Operating limits in heating mode - EWYD~BZSS / EWYD~BZSL
D-EIMHP00508-16EN - 16/64

Mechanical installation
Shipping
The stability and the absence of any kind of deformation of the unit during shipping must be ensured. If the machine is
shipped with a wooden cross-plank on its base, this cross-plank must only be removed after the final destination has
been reached.
Responsibility
The manufacturer declines all present and future responsibility for any damage to persons, animals or things caused by
negligence of operators failing to follow the installation and maintenance instructions in this manual and/or the rules of
good technical practice.
All safety equipment must be regularly and periodically checked in accordance with this manual and with local laws and
regulations regarding safety and environment protection.
Safety
The machine must be secured to the ground.
It is essential to observe the following instructions:
-The machine can only be lifted using the lifting points marked in yellow that are fixed to its base. These are the only
points that can support the entire weight of the unit.
-Do not allow unauthorised and/or unqualified personnel to access the unit.
-It is forbidden to access the electrical components without having opened the unit’s main switch and switched off the
power supply.
-It is forbidden to access the electrical components without using an insulating platform. Do not access the electrical
components if water and/or moisture are present.
-All operations on the refrigerant circuit and on components under pressure must be carried out by qualified personnel
only.
-Replacement of a compressor or addition of lubricating oil must be carried out by qualified personnel only.
-Sharp edges and the surface of the condenser section could cause injury. Avoid direct contact.
-Switch off the unit’s power supply, by opening the main switch, before servicing the cooling fans and/or compressors.
Failure to observe this rule could result in serious personal injury.
-Avoid introducing solid objects into the water pipes while the machine is connected to the system.
-A mechanical filter must be installed on the water pipe connected to the heat exchanger inlet.
-The machine is supplied with safety valves, that are installed both on the high-pressure and on the low-pressure
sides of the refrigerant circuit.
In case of sudden stop of the unit, follow the instructions on the Control Panel Operating Manual which is part of the
on-board documentation delivered to the end user with this manual.
It is recommended to perform installation and maintenance with other people. In case of accidental injury or unease, it is
necessary to:
-keep calm
-press the alarm button if present in the installation site
-move the injured person in a warm place far from the unit and in rest position
-contact immediately emergency rescue personnel of the building or if the Health Emergency Service
-wait without leaving the injured person alone until the rescue operators come
-give all necessary information to the the rescue operators
WARNING
Before carrying out any operation on the machine, please read carefully the instruction and operating manual.
Installation and maintenance must be carried out by qualified personnel that is familiar with provisions of the law and
local regulations and has been trained properly or has experience with this type of equipment.
WARNING
Avoid installing the chiller in areas that could be dangerous during maintenance operations, such
without parapets or railings or areas not complying with the clearance requirements around the chiller. as platforms
Moving and lifting
Avoid bumping and/or jolting during unloading from the lorry and moving the unit. Do not push or pull the machine from
any part other than the base frame. Secure the machine inside the lorry to prevent it from moving and causing damage to
the panels and to the base frame. Do not allow any part of the unit to fall during transportation or unloading, as this could
cause serious damage.
All units of the series are supplied with lifting points marked in yellow. Only these points may be used for lifting the unit,
as shown in the following figure.
D-EIMHP00508-16EN - 17/64

Procedure for extracting the machine from the container.
Container Kit Optional
Figure 3 - Lifting the unit
The number and the location of lifting points changes from model to model. This picture is for reference only. Lifting tools
(bars, ropes, etc) are not supplied.
WARNING
Both the lifting ropes and the spacing bar and/or scales must be strong enough to support the machine safely. Please
check the unit’s weight on the machine’s nameplate.
The weights shown in the “Technical specifications” tables in the “Specifications” chapter refer to standard units.
Specific units might have accessories that increase overall weight (pumps, heat recovery, copper condenser coils, etc.).
WARNING
The unit must be lifted with the utmost attention and care. Avoid jolting when lifting and lift unit very slowly, keeping it
perfectly orizzontal.
Positioning and assembly
All units are designed for installation outdoors, either on roofs or on the ground, provided that the installation area is free
of obstacles that could reduce air flow to the condensers bank.
The unit must be installed on a robust and perfectly plan foundation; should the machine be installed on balconies or
roofs, it might be necessary to use weight distribution beams.
For installation on the ground, a strong cement base that is at least 250 mm wider and longer than the machine must be
provided. Also, this base must be able to support the weight of the machine as stated in the technical specifications.
If the machine is installed in places that are easily accessible to people and animals, it is advisable to install protection
grids for the condenser and compressor sections.
To ensure the best possible performance on the installation site, the following precautions and instructions must be
followed:
Avoid air flow recirculation.
Make sure that there are no obstacles to hamper air flow.
Air must circulate freely to ensure proper flow in and flow out.
Make sure to provide a strong and solid foundation to reduce noise and vibrations as much as possible.
Avoid installation in particularly dusty environments, in order to reduce soiling of condensers.
The water in the system must be particularly clean and all traces of oil and rust must be removed. A mechanical
water filter must be installed on the machine’s inlet piping.
D-EIMHP00508-16EN - 18/64

Minimum space requirements
It is fundamental to respect minimum distances on all units in order to ensure optimum ventilation to the condenser.
Limited installation space could reduce the normal air flow, thus significantly reducing the machine’s performance and
considerably increasing consumption of electrical energy.
When deciding where to position the machine and to ensure a proper air flow, the following factors must be taken into
consideration: avoid any warm air recirculation and insufficient air supply to the air-cooled condenser.
Both these conditions can cause an increase of condensing pressure, which leads to a reduction in energy efficiency and
refrigerating capacity. Thanks to the geometry of their air-cooled condensers, the units are less affected by poor air
circulation conditions.
Also, the software has particularly the ability to compute the machine’s operating conditions to optimise the load under
abnormal operating circumstances.
Every side of the machine must be accessible for post-installation maintenance operations. Figure 4 shows the minimum
space required.
Vertical air discharge must not be obstructed as this would significantly reduce capacity and efficiency.
If the machine is surrounded by walls or obstacles of the same height as the machine, it must be installed at a distance
of at least 2500 mm. If these obstacles are higher, the machine must be installed at a distance of at least 3000 mm.
Should the machine be installed without observing the recommended minimum distances from walls and/or vertical
obstacles, there could be a combination of warm air recirculation and/or insufficient supply to the air-cooled condenser
which could cause a reduction of capacity and efficiency.
Figure 4 - Minimum clearance requirements for machine maintenance
In any case, the microprocessor will allow the machine to adapt itself to new operating conditions and deliver the
maximum capacity available under any given circumstances, even if the lateral distance is lower than recommended.
When two or more machines are positioned side by side, a distance of at least 3600 mm between the respective
condenser banks is recommended.
For further solutions, please consult Daikin technicians.
D-EIMHP00508-16EN - 19/64

Figure 5 - Minimum recommended installation clearances
Distances shown in previous figures have not be considered a warranty for good installation; particular conditions (like
venturi effects due to wind, very tall buildings, etc.) may cause air recirculation so affecting unit performances. It is a
responsibility of the installer to assure that the unit condenser is fed with fresh air in any condistions
Sound protection
When sound levels require special control, great care must be exercised to isolate the machine from its base by
appropriately applying anti-vibration elements (supplied as an option). Flexible joints must be installed on the water
connections, as well.
Water piping
Piping must be designed with the lowest number of elbows and the lowest number of vertical changes of direction. In this
way, installation costs are reduced considerably and system performance is improved.
The water system should have:
1 Anti-vibration mountings in order to reduce transmission of vibrations to the underlying structure.
2 Isolating valves to isolate the machine from the water system during service.
3 Manual or automatic air venting device at the system’s highest point; drain device at the system’s lowest point.
Neither the evaporator nor the heat recovery device must be positioned at the system’s highest point.
4 A suitable device that can maintain the water system under pressure (expansion tank, etc.).
5 Water temperature and pressure indicators on the machine to assist the operator during service and
maintenance.
6 A filter or device that can remove foreign particles from the water before it enters the pump (in order to prevent
cavitation, please consult the pump manufacturer for the recommended type of filter). The use of a filter prolongs
the life of the pump and helps keep the water system in a better condition.
7 Another filter must be installed on the machine inlet water pipe, near the evaporator and heat recovery (if
installed). The filter prevents solid particles from entering the heat exchanger, as they could damage it or reduce
its heat exchanging capacity.
8 The shell and tube heat exchanger has an electrical resistance with a thermostat that ensures protection against
water freezing at ambient temperatures as low as –25°C. All the other water piping outside the machine must
therefore be protected against freezing.
D-EIMHP00508-16EN - 20/64