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Wiring Layout ESIE 05-07

1–118 Part 1 – System Outline

DICN setup

(= Master/Slave

system)

In the service menu, the installer must select if the units are used in a DICN system or not.

The D.I.C.N. option allows simultaneous operation of up to 4 chillers as if they were a single unit, in

order to deliver the required cooling capacity. This results in precise and efficient capacity control.

It is also possible to define units as standby units, which is useful for back up purposes guaranteeing

reliable operation of the chiller plant.

With this option, up to a 2 Megawatt chiller plant can be operated as if they were a single unit.

Overview of addresses of DICN setup:

Note: See chapter 3 the functional controller for DTCN for more explanation.

PCB

(pCO²)

User-termi-

nal (optional)

EEV1

(if present)

EEV2

(if present)

PCOE

(if present)

Unit 1 Master 1 2 3 4 1

Unit 2 Slave 1 5 6 7 8 1

Unit 3 Slave 2 9 10 11 12 1

Unit 4 Slave 3 13 14 15 16 1

Unit 1

= Master

Unit 2

= Slave 1

Unit 3

= Slave 2

Unit 4

= Slave 3

pLAN connection

GND

ESIE05-07.book Page 118 Wednesday, October 11, 2006 10:42 AM