Installation manual
8
EWYQ080~250DAYN
Packaged air-cooled water chillers
4PW35559-1D – 03.2011
■
Connecting the pump (3~50 Hz, 400 V) in case of OPSC or
OPTC
-
For OPSC: pump contactor K1P is present
-
For OPTC: pump contactors K1P and K2P are present
For each pump connection, use a cable containing 3 conductors
+ ground with a minimum conductor section of 2.5 mm
2
.
Maximum running current/pump as in the table below.
Connect L1, L2, and L3 to K1P (and to K2P in case of OPTC)
and the earthing wire to the earth terminal on the left side of K1P
as shown in the figures below.
Connection and setup of a DICN system
(option kit EKACPG)
(See
Annex I
,
"Installation examples for a DICN configuration" on
page 12
)
For a system with chillers in a DICN configuration, the chillers have to
be connected as shown in the figure below.
Make the F1/F2 connection for DIII communication as shown on the
wiring diagram using a 2-core wire (0.75~1.25 mm
2
) (maximum of
1000 m).
Pay attention to the polarity!
DICN setup settings on the digital controller
When a DICN system is installed, adjust the settings on the digital
controller as shown in the tables below:
Service menu, submenu, communication
COMMUNICATION PCB
(fifth screen)
Service menu, submenu, DICN
DICN SETTINGS
(first screen)
DICN SETTINGS
(second screen)
Cable for remote digital controller (option kit EKRUPG)
In case you prefer to operate the unit from a distance, a remote digital
controller can be connected to the PCB inside the unit. Specifications
of the cable: 0.75 mm
2
4 wire, and maximum 500 m long.
Setting the addresses on the remote digital controller
When a remote digital controller is used, the address has to be set by
means of DIP-switches according to the drawing below:
Also refer to the wiring diagram delivered with the unit.
Double circuit unit
The length of the earthing cable may not exceed
10 m. If the distance between pump and switch box is
more than 10
m, the pump must be earthed
independant of the switch box.
Units
Maximum running current/pump
100
4.45 A
150
6.30 A
EWYQ180~250
8.00 A
Single circuit unit
Double circuit unit
1
1
L1
L1
L3
L3
L2
L2
L1
L3
L2
K1P
K1P
K2P
K2P
K1P
K2P
L1
L1 L2
L2 L3
L3
L1 L2 L3
1
1
2
3
4
Unit 1
Master
Unit 2
Slave 1
Unit 3
Slave 2
Unit 4
Slave 3
DIII:
YES
YES
YES
YES
ADDR:
1-00
1-01
1-02
1-03
POWER:
Y
N
N
N
Unit 1
Master
Unit 2
Slave 1
Unit 3
Slave 2
Unit 4
Slave 3
MS OPTION:
Y
(*)
(*)
The master unit must be set as last in row, otherwise set to
N
and back to
Y
.
Y
Y
Y
UNIT:
MASTER
SLAVE
SLAVE
SLAVE
NR OF SLAVES:
3
—
—
—
Unit 1
Master
Unit 2
Slave 1
Unit 3
Slave 2
Unit 4
Slave 3
ADD SL1:
1-01
—
—
—
ADD SL1:
1-02
—
—
—
ADD SL1:
1-03
—
—
—
NOTE
■
When the user enters the service menu, the DIII
communication stops.
■
When the user leaves the service menu, the DIII
communication restarts.
■
It takes 10 minutes before DIII communication is
fully re-established.
If communication fails after 10 minutes, the
network safety error message "
OU4:PCB
COMM.PROBLEM
" appears (also refer to
symptom 12 in the chapter "Troubleshooting" in
the operation manual).
Main (A4P)
remote controller
Sub (A5P)
remote controller
■
= DIP-switch position
SUB
MAIN
ON
OFF
S1A
S2A
TERM
SUB
MAIN
ON
OFF
S1A
S2A
TERM
