GREE Photovoltaic Direct-driven Inverter Multi VRF Units
67
NOTE:
The maximum number of connected IDUs (n) is determined based on the capacity of the ODU. For
details, see the description on unit capacity configuration.
(2) External Connection for Modularly Connected Units
AC
DC POWER
AC
POWER
ODU n
ODU 2
AC POWER
3
3
3
L1
L2
L3
IDU 1
L1 L2
L3
IDU n
L1
L2
L3
D1
D2
H1
H2
IDU 2
L1
L2
D1
D2
H1
H2
G
G
G
G
G
G
QF
QF
QF
......
......
master module
Wired controller
Wire
(resistance-matching)
COMMUNICATION
COMMUNICATION
POWER
POWER
POWER
Communication cord
Power cord
Power cord
G
G
Wired controller
Wired controller
QF
QF
QF
QF
QF
PV1+ PV1-
PV2+
PV2-
AC
DC POWER
AC
POWER
QF
QF
G
G
QF
PV1+ PV1-
PV2+
PV2-
Remote monitor
ODU 1
AC
DC POWER
AC
POWER
QF
QF
G
G
QF
PV1+ PV1-
PV2+
PV2-
3
3
PV Array
PV Array
Power cord
D1
D2
G1 G2
COMMUNICATION
D1
D2 G1
G2
COMMUNICATION
D1
D2
G1
G2
COMMUNICATION
D1
D2
H1 H2
COMMUNICATION
PV Array
Indoor Unit ground Lines are required for preventing electrical shock accident during current
leakage, Communication disorder by noise effect and motor current leakage (without connection to
pipe).
Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately
from the power supply.
Install the main switch that can interrupt all the power sources in an integrated manner because
this system consists of the equipment utilizing the multiple power sources.
If there exists the possibility of reversed phase, lose phase, momentary blackout or the power
goes on and off while the product is operating, attach a reversed phase protection circuit locally.Running
the product in reversed phase may break the compressor and other parts.
NOTE:
The maximum number of connected ODUs (N) and that of connected IDUs (n) are determined
based on the combination form of ODUs. For details, see the description on unit capacity configuration.
To Next Page
Loading...
