11
installation manual
5.2 Indoor Unit Wiring
Power Supply
The wire diameter and continuous length is under the
condition that the voltage vibration is within 2%. If the
continuous length is exceed showing value, choose the
wire diameter follow relevant regulation.
NOTE
Indoor Power Supply
Circuit Breaker
Manual swtich
Wire Distribution Box
Indoor Unit
CAUTION
1. Refrigerant piping system, indoor unit-indoor unit connection
signal wires and indoor unit-outdoor unit connection singal wire
are in the same system.
2. When power cord is parallel with signal wire, please put them
into separate wire distribution pipes, and leave a proper distance.
(Reference distance: It is 300mm when current capacity of
power cord is less than 10A, or 500mm when 50A).
Please use shield wire as indoor unit/outdoor unit signal wire.
Indoor/Outdoor unit signal wire wiring
Outdoor Unit
Close end of the connection shielded wire
Indoor/Outdoor
Unit Signal Wire
(open)
Table 5-2
Fig. 5-6
Wrong connection may cause malfunction .
Wiring Connection
Seal the wiring connection with the insulation material , or there
is risk for condensation.
The air-conditioners can connect with Central Control Monitor
(CCM). Before operation, please wire correctly and set system
address and network address of indoor units
NOTE
Single phase indoor unit
Wire controller
The reserved wire control
function is indicated in broken
line table, users can purchase
the wire controller when
necessary.
In broken line table, users can purchase the wire
controller when necessary
To wire controller
Display
board
WH
ITE
B
LU
E
B
LA
C
K
P Q
X Y E
Y
E
LLO
W
G
R
AY
To Outdoor
COMM.BUS
To Central Control
Monitor (CCM)
COMM. BUS
Power Supply
Y/G
N
L
Please use 3-core shielded wire, and
connect the shielded layer to Grounding
XT1
XT3
Fig. 5-5
B
LA
C
K
E
Indoor unit power supply wiring
Circuit Breaker (A)
16
Wire size must comply with local codes
Indoor Unit
Power
Phase
Voltage and
Frequency
1-Phase
220-240V~ 50Hz
Indoor Unit /Outdoor Unit
Signal Wire (mm
2
)
(Weak electric signal)
Indoor/Outdoor unit signal wire is low voltage circuit. Do not
let it touch the high voltage power wire and put it to gather
with power cord in the same wire distribution pipe.
1. Signal wire is 3-core, polarized wire. Use 3-core shield wire to
prevent interference. The grounding method now is grounding
the closed end of the shield wire and opening (insulating) at the
end. Shield is to be grounded.
2. The control between outdoor unit and indoor unit is BUS type.
Addresses is set on field during the installation.
CAUTION
3-core shielded wire
3X0.75
Capacity(kW)
208-230V~ 60Hz
1.8~16
Fig. 5-7
Power Wiring
Size
5.3 Function setting dial switches instructions
SW3(SW-1) definition: Auto Addressing Dial
