Daikin EWAP460MBYN [271/452] Dicn basic setup master slave system

ESIE05-07 The Functional Controller for DICN

Part 2 – Functional Description 2–75

3.3 DICN Basic Setup (= master/slave system)

A site with units installed in a DICN configuration will operate as one big chiller with different water

circuits installed in parallel. We can virtually speak about a DICN-unit in stead of a site with different

chillers.

The DICN-unit can be controlled via inlet water or outlet water control. For outlet water control, an extra

sensor has to be installed in the common leaving water pipe.

Up wiring For a system with chillers in a master-slave configuration, the chillers have to be connected witch an

AWG20/22 shielded cable, made up of a twisted pair plus shield.

P Make the connection between the different chillers (see next page).

P Make first all connections and change addresses (dipswitches).

Take care of the polarity! TX+ on one chiller must be connected to TX+ on another chiller. You have

to do the same for TX-. Also connect the shielding to the ground.

For units in a DICN configuration, be sure to provide every chiller with its own flow switch, and be sure

to interlock with the pump that is serving the chiller.

Unit 1

= Master

Unit 2

= Slave 1

Unit 3

= Slave 2

Unit 4

= Slave 3

pLAN connection

GND

ESIE05-07.book Page 75 Wednesday, October 11, 2006 10:42 AM