Connection And Setup Of A Dicn System; Cable For Remote Digital Controller - Daikin EWLD120MBYNN Installation Instruction

• Remote dual setpoint switch:
The remote dual setpoint switch should only be connected to the
chiller defined as
However in case the master drops out because of e.g. a power
supply failure, it might be interesting to have the dual temperature
switch installed to the other units as well.
• Note:
For wiring examples, refer to the separate manual "
examples for a DICN configuration

Connection and setup of a DICN system

(See Annex I, "Installation examples for a DICN configuration" on
page 10)
For a system with chillers in a DICN configuration, the chillers have to
be connected as shown in the figure below.
1 2
Make the connection as shown on the wiring diagram using an
AWG20/22 shielded cable, made up of a twisted pair plus shield.
Pay attention to the polarity! TX+ on one chiller must be connected to
TX+ on another chiller. The same for TX– and GND.
Setting the adresses on the digital controller
Set the addresses on the PCB by means of DIP-switches according
to the drawing below:
Master Slave 1
1 2 3 4 5 6 1 2 3 4 5 6
PCB
address
OFF OFF
Any unit can be master, slave 1, slave 2 or slave 3.
Where to find the DIP-switches of the digital controller
Important
Be sure to attach — in case of common leaving water control — the
optional temperature sensor.
Installation manual
7
.
Installation
".
3 4
Slave 2 Slave 3
1 2 3 4 5 6 1 2 3 4 5 6
OFF OFF

Cable for remote digital controller

See remote digital controller in the operation manual.
1 A remote digital controller can be connected to the PCB inside
the unit by means of a 6-ray cable and a connector located on
the rear side of the remote digital controller in case you prefer to
operate the unit from a distance. You are allowed to use a cable
of up to 600 metres (EWLD120~260) or 300 metres
(EWLD340~540). Specifications of the cable: 6-ray telephone
cable with a maximum cable resistance of 0.1 Ω/m.
2 For units in a DICN configuration, the digital controllers of the
units can be installed remotely at a distance of up to 50 metres
by using a 6-ray telephone cable with a maximum cable
resistance of 0.1 Ω/m.
Setting the adresses on the remote digital controller
When a remote digital controller is used, the adress has to be set by
means of DIP-switches according to the drawing below:
Master
1 2 3 4 5 6
Remote digital
controller address
OFF
Any unit can be master, slave 1, slave 2, slave 3...
Where to find the DIP-switches of the remote digital controller
To avoid damage to the controllers liquid crystals during
winter time, do not shut off the main power supply.
Slave 1 Slave 2 Slave 3
1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6
OFF OFF OFF
EWLD120~540MBYNN
Condenserless water-cooled water chillers
4PW22686-1