Daikin EWYQ230DAYN [370/524] Dicn basic setup master slave system

Functional Control for a Standalone Unit ESIE06-05

2–144 Part 2 – Functional Description

3.16 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 instead of a site with different

chillers.

The DICN-unit can only be controlled via inlet water. DICN can only be used if option kit EKACPG

(addresscord) is installed.

Up wiring Connection and setup of a DICN system (option kit EKACPG)

For a system with chillers in a DICN configuration, the chillers have to be connected as shown in the

figure below.

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.

Addresses in DICN

Setup

The addresses of the unit (pcb, EEV driver, controller) don’t change when the units are used as

standalone or in a DICN system.

Make the F1/F2 connection for DIII communication using a

0.75~1.25 mm2 2-wire cable (maximum of 1000 m from start to end).