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Field Setting from Condensing Unit
SiUS30-1301
114
Field Setting
(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.)
Multi-condensing units connection
External control adaptor for condensing
u
nit
CE
N
TRAL
C/H
SELECTOR
OFF
O
N
BOTH
C/H
DE
FU
N
CTIO
N
C/H
CE
N
TRAL
N
O.
TERMI
N
AL
ADDRESS
MASTER
I
N
D
SLA
V
E
C/H SELECT
C/H SELECT
MODE
TEST
L.
N
.O
.P
.
DEMA
N
D
OUT
I
N
I
N
D
I
N
D
DS1-1
X24A
O
I
I
C/H SELECTOR
I-O
O-O
OUT-MULTI
MASTER
SLA
V
E
C/H SELECT
C/H SELECT
MODE
TEST
L.
N
.O
.P
.
DEMA
N
D
M
u
lti
M
u
lti
OUT
O
I
C/H SELECTOR
I-O
O-O
OUT-MULTI
MASTER
SLA
V
E
C/H SELECT
C/H SELECT
MODE
TEST
L.
N
.O
.P
.
DEMA
N
D
OUT
O
I
C/H SELECTOR
I-O
O-O
OUT-MULTI
MASTER
I
N
D
SLA
V
E
C/H SELECT
C/H SELECT
MODE
TEST
L.
N
.O
.P
.
DEMA
N
D
OUT
O
C/H SELECTOR
I-O
O-O
OUT-MULTI
To indoor
u
nit
To indoor
u
nit
<Sla
v
e
u
nit>
<Master
u
nit>