Daikin EWWD120MBYNN, Руководство по установке, Страница: 9 / 16

EWWD120~540MBYNN
Packaged water-cooled water chillers
4PW22684-1A
Installation manual
6
Connection and setup of a DICN system
(See Annex I, "Installation examples for a DICN configuration" on
page 9 )
For a system with chillers in a DICN configuration, the chillers have to
be connected as shown in the figure below.
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:
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.
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 (EWWD120~280) or 300 metres
(EWWD360~540).
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 resis-
tance 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:
Where to find the DIP-switches of the remote digital controller
Setting the adresses on the EEV drivers
When EEV drivers are used, the adresses has to be set by means of
DIP-switches according to the drawing below:
Where to find the DIP-switches of the EEV drivers
Master Slave 1 Slave 2 Slave 3
PCB address
Any unit can be master, slave 1, slave 2, slave 3...
Master Slave 1 Slave 2 Slave 3
Remote digital
controller address
Any unit can be master, slave 1, slave 2, slave 3...
1 2 3 4
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
To avoid damage to the controllers liquid crystals during
winter time, do not shut off the main power supply.
Master Slave 1 Slave 2 Slave 3
EEV 1 driver
EEV 2 driver
Any unit can be master, slave 1, slave 2, slave 3...
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF
1 2 3 4 5 6
OFF