Daikin VRV-WIII RWEYQ72PTJU Service Manual page 123

SiUS30-1301
(4) Set Cool/Heat for more than Single condensing Unit System Simultaneously in Accordance with Unified
Master condensing Unit by Cool / Heat Selector
 Install the external control adaptor for condensing unit on either the condensing-condensing, indoor-condensing transmission line.
 Mount the COOL/HEAT selector to the master condensing unit for the unified control.
Set the DS1-1 on the PCB of master condensing unit to OUT.
 In setting mode 1, set the condensing unit you want to give cool/heat selection permission to as the group master, and set
the other condensing units as group slave units.
 When multiple external control adaptors are used and cool/heat is selected for each external control adaptor, use "setting mode 2" and
set DS1 and DS2 on the external control adaptors and the unified heat/cool address on the condensing unit main PCB to the same
address No. (For details, refer to the following page.)
External control adaptor for condensing
unit
CENTRAL
C/H
NO.
<Master unit>
OUT
IN
C/H SELECTOR
To indoor unit
Multi condensing units connection
Field Setting
CENTRAL
C/H
SELECTOR
OFF ON
OUT
BOTH C/H
DE
X24A
FUNCTION
DS1-1
IN
C/H SELECTOR
TERMINAL
ADDRESS
Cool/Heat
selector
To indoor unit
C/H SELECT
MASTER SLAVE
IND
C/H SELECT
O
I
I-O O-O OUT-MULTI
C/H SELECT
MASTER
IND SLAVE
C/H SELECT
O
I
I-O O-O OUT-MULTI
<Slave unit>
C/H SELECT
IND MASTER
C/H SELECT
O
OUT
I
IN
C/H SELECTOR I-O
Field Setting from Condensing Unit
C/H SELECT
IND
MASTER
C/H SELECT
O
OUT
I
IN
C/H SELECTOR I-O
To indoor unit
SLAVE
O-O OUT-MULTI
SLAVE
O-O OUT-MULTI
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