Daikin EWWD120MBYNN Installation Manual page 12

A I
NNEX
Installation examples for a DICN configuration
I
NTRODUCTION
This annex introduces 3 installation examples to help you set up your
Daikin Integrated Chiller Network or DICN configuration.
Defining a unit in a setup of a DICN system
Change the setting of
E
XAMPLES
Field wiring and wiring parts table
All field wiring and components must be installed by a
licensed electrician and must comply with relevant Euro-
pean and national regulations.
The field wiring must be carried out in accordance with the
wiring diagram supplied with the unit and instructions given
below.
Be sure to use a dedicated power circuit. Never use a
power supply shared by another appliance.
All customized settings must be done by a licensed
technician.
........Field wiring
........Earth wiring
...........................Terminal on the unit
F1~F20...................Fuses
K1P~K4P................Pump contact (S9L on main wiring diagram)
L1,L2,L3,N..............Main supply terminals
M1P~M5P ..............Pump motor
R8T ........................Sensor for common leaving water in a DICN
system (EKCLWS)
R9T ........................Sensor for secondary circuit
S1S ........................Manual switch for pump of master unit
S6S (M,S3).............Remote start/stop switch
S10S ......................Dual setpoint selection switch
Y1S ........................3-way valve
Installation manual
9
to on each unit.
Example 1: Single ring system with 1 pump
Figure 1 shows the system configuration, field wiring and terminals
for field wiring of this example.
Purpose
Purpose of this system is to deliver a constant water flow at a con-
stant temperature to a particular load. One unit, slave 3 (S3), is kept
as a standby unit.
Setup
The system is controlled on leaving water temperature. It is
required to install the additional sensor R8T (EKCLWS) in the
mixed water outlet and to connect it to the PCB of the master
unit.
The pump keeps running as long as 1 of the units is ON. After
switching OFF all units, the pump runs for a time indicated by
the setting.
Slave 3 (S3) is configured to operate when its remote start/stop
switch S6S (S3) is pushed by the operator.
Slave 1 (S1), slave 2 (S2) and the master unit (M) are switched
ON or OFF using the remote start/stop switch S6S (M) which is
connected to the master unit.
The setpoint can be switched from
using the dual setpoint selection switch S10S
which is connected to the master unit.
NOTE K*P can also be a 24 V DC or 230 V AC contactor.
The additional sensor R8T (EKCLWS) must be
connected directly to the PCB of the master unit.
Parameter settings of the units
Usersettings menu:
Slave 3
Changeable inputs/outputs must be defined as follows:
Service setting menu:
Slave 3
Terminal 76-78
S10S DI1
Terminal 76-79
S6S DI2
Terminal 76-85
DI3
Terminal 76-86
DI4
Terminal 8T+8T–
R8T AI1
Remark
Slave 3 can be configured to start up automatically if:
1 of the other units is in alarm or;
all other units are running on full capacity and the setpoint is not
reached yet.
To have your slave 3 unit act this way, set its mode to
case, S6S (S3) has no function.
Slave 2 Slave 1 Master
Slave 2 Slave 1 Master
EWWD120~540MBYNN
Packaged water-cooled water chillers
4PW22684-1A
to
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