Daikin VRV-WIII RWEYQ72PTJU Service Manual page 122

Field Setting from Condensing Unit
(3) Set Cool / Heat for more than Single Condensing Unit System Simultaneously in Accordance with Unified
Master Condensing Unit by Indoor Unit Remote Controller
 Install the external control adaptor for condensing unit on either the condensing-condensing, indoor-condensing
transmission line.
 Set condensing unit PCB DS1-1 to IN (factory setting).
 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.
 Set the condensing unit external control adaptor SS1 to BOTH (factory setting) or C/H, and SS2 to OFF (factory
setting).
 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
BOTH C/H
CENTRAL
C/H
NO.
<Master unit>
IND
OUT O
I
C/H SELECTOR
Multi-condensing units connection
114
CENTRAL
IND
C/H
SELECTOR
OFF ON
O
OUT
DE
X24A
FUNCTION
DS1-1
I
IN
C/H SELECTOR
TERMINAL
ADDRESS
To indoor unit
C/H SELECT
MASTER SLAVE
C/H SELECT
I-O OUT-MULTI
O-O
C/H SELECT
MASTER SLAVE
C/H SELECT
I-O O-O OUT-MULTI
<Slave unit>
C/H SELECT
IND MASTER
C/H SELECT
O
OUT
I
C/H SELECTOR I-O
C/H SELECT
IND MASTER
C/H SELECT
O
OUT
I
C/H SELECTOR I-O
To indoor unit
SLAVE
O-O OUT-MULTI
SiUS30-1301
SLAVE
O-O OUT-MULTI
Field Setting