EWWD440~850AAYNNO**
Packaged water-cooled water chillers
4PW25558-1B
Installation and operation manual
1
C
ONTENTS
Page
Safety considerations ........................................................................ 1
Precautions during installation ................................................................... 1
Precautions when using............................................................................. 2
Precautions when relocating or repairing the unit...................................... 3
Moving and Rigging ........................................................................... 3
Inspecting the unit...................................................................................... 3
Lifting the unit............................................................................................. 3
Pulling the unit horizontally ........................................................................ 4
Function of the main components.............................................................. 5
Selection of installation site and foundation work ...................................... 6
Sound insulation and vibration isolation work ............................................ 7
Water quality specifications........................................................................ 8
Piping work ................................................................................................ 8
Power supply work ................................................................................... 10
Internal wiring - Parts table ...................................................................... 10
Power circuit and cable requirements ...................................................... 11
Connection of the watercooled water unit power supply.......................... 11
Interconnection cables ............................................................................. 11
Operating the graphic panel display ................................................ 12
Explanation common to respective screens ............................................ 13
How to change settings of “DATE” and “TIME”......................................... 15
How to change settings in the touch panel .............................................. 15
Before test run ................................................................................. 17
Checking the electric circuit (Check the following before power-up) ........ 17
Checking the bridge wiring....................................................................... 17
Check at first electrification ...................................................................... 17
Checking the water system ...................................................................... 18
Checking the unit body ............................................................................ 18
Checking the settings on the controller .................................................... 18
Instructions before operation ........................................................... 19
First operation (Very important) ............................................................... 19
Local operation on the unit “LOCAL” ........................................................ 19
Remote operation “REMOTE” .................................................................. 20
Confirming the ON/OFF condition ........................................................... 20
Consulting operational data ..................................................................... 21
Functions of this model.................................................................... 21
Automatic water temperature control ....................................................... 21
Low load stop (Thermo off) ...................................................................... 21
ON-OFF limiting function ......................................................................... 22
Current limiting function ........................................................................... 23
Current demand function ......................................................................... 23
Units control thermo................................................................................. 24
Compressor starting order rotation function ............................................ 24
2-temperature setting function (Optional) ................................................ 24
Operation between power failure and power recovery............................. 25
Unit start flow ........................................................................................... 26
Unit stop flow ........................................................................................... 28
I/O timing of various contacts................................................................... 29
Maintenance and inspection............................................................ 30
Periodic inspection of safety devices ....................................................... 30
Before inspecting ..................................................................................... 31
Periodical inspection ................................................................................ 31
Refrigerant and lubrication oil .................................................................. 31
Daily inspection........................................................................................ 32
Disposal requirements ............................................................................. 32
Cautions when stopping for a long time .......................................... 32
Troubleshooting ............................................................................... 33
Operating range............................................................................... 35
Operating limit.......................................................................................... 35
Water flow rate ......................................................................................... 35
Minimum holding water quantity within the system .................................. 36
Standards for use..................................................................................... 36
How to continue ............................................................................... 36
Thank you for purchasing this Daikin air conditioner.
S
AFETY
CONSIDERATIONS
For your safety and that of others, observe the precautions listed
here after at all time.
There are two types of precautions:
WARNING: When improper handling or operation could result
in death or serious injury.
CAUTION: When improper handling or operation could result
in injury or physical damage. Depending on the
circumstances, neglecting could lead to serious
consequences.
Both types are extremely important to ensure safety, and must be
payed attention to at all time.
Precautions during installation
WARNING
■
For installation work, be sure to contact your dealer.
Improper installation could result in leaks, electric
shock or fire.
■
Be sure to perform installation work in accordance with
the instructions.
Improper installation could result in leaks, electric
shock or fire.
■
Be sure to install the unit in a level place capable of
holding its weight and fix it with bolts completely.
Incomplete installation or installing in a place that
cannot support the weight of the unit could result in leaks or in
the unit overturning or falling.
■
Take proper measures required for preventing
refrigerant leaks.
If the unit is installed in places such as engine rooms,
countermeasures must be taken against exceeding a certain
concentration of leaking refrigerant. If the concentration limit is
exceeded, it could result in a lack of oxygen.
■
For electrical work, be sure to use a dedicated circuit.
Electrical work should be performed by a qualified
electrician.
Perform the work in accordance with technical standards for
electrical equipment and indoor wiring regulations.
Insufficient circuit capacity of the power supply or improper
electrical work could result in electrical shock or fire.
EWWD440AAYNNO**
EWWD600AAYNNO**
EWWD850AAYNNO**
Packaged water-cooled water chillers
Installation and
operation manual
READ THIS MANUAL ATTENTIVELY BEFORE STARTING
UP THE UNIT. DO NOT THROW IT AWAY. KEEP IT IN
YOUR FILES 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.