Daikin VRV II-Q RQYQ8-48PY1B Service Manual page 91

SiBE341027
Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified
Master Outdoor Unit by Indoor Unit Remote Controller
Install the external control adaptor for outdoor unit on either the outdoor-outdoor, indoor-outdoor
transmission line.
Set outdoor unit PCB DS1-1 to IN (factory setting).
In setting mode 1, set the outdoor unit you want to give cool/heat selection permission to as the unified
master, and set the other outdoor units as unified slave units.
Set the external control adaptor for outdoor unit SS1 to BOTH (factory setting) or C/H, and SS2 to OFF
(factory setting).
External control adaptor for outdoor unit
BOTH
FUNCTION
CENTRAL
C/H
NO.
<Master unit>
IND
OUT
IN
C/H SELECTOR
To indoor unit
Multi outdoor units connection
When multiple external control adaptors for outdoor unit are used and cool / heat is selected for each
external control adaptor for outdoor unit, use "setting mode 2" and set DS1 and DS2 on the external
control adaptors for outdoor unit and the unified cool / heat address on the outdoor unit main PCB to the
same address No. (For details, refer to the following page.)
Test Operation
C/H SELECT
CENTRAL
IND
C/H
SELECTOR
OFF ON
OUT
C/H DE
IN
C/H SELECTOR
TERMINAL
ADDRESS
To indoor unit
C/H SELECT
MASTER SLAVE
C/H SELECT
OUT-MULTI
MASTER SLAVE
C/H SELECT
OUT-MULTI
<Slave unit>
C/H SELECT
IND
MASTER
C/H SELECT
OUT
IN
C/H SELECTOR
Field Setting from Outdoor Unit
C/H SELECT
IND MASTER
C/H SELECT
OUT
IN
C/H SELECTOR
To indoor unit
SLAVE
OUT-MULTI
SLAVE
OUT-MULTI
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