EAS Electric EVRO-120NDC Installation Manual page 36

Wrong connection may cause malfunction .
Wiring Connection
Seal the wiring connection with the insulation material , or the
condensing dew will be caused.
NOTE
The air-conditioners can connect with Central Control Monitor
(CCM). Before operation, please wiring correctly and set system
address and network address of indoor units
5.2 Indoor Unit Wiring
Power Supply
Capicity(kW)
Phase
Voltage and
Indoor Unit
Frequency
Power
Power Wiring
Wire size must comply with local codes
Size
Circuit Breaker (A)
Indoor Unit /Outdoor Unit
Signal Wire (mm 2 )
(Weak electric signal)
Single phase indoor unit
N
L X Y E
Y/G
XT1
Power Supply
To Central Control
Monitor (CCM)
COMM. BUS
Please use 3-core shielded wire, and
connect the shielded layer to Grounding
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
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.
Table 5-2
1.8~16
1-Phase
220-240V~ 50Hz
208-230V~ 60Hz
16
3-core shielded wire
3X0.75
Display
board
P Q E
XT3 Wire controller
To Outdoor
To wire controller
COMM.BUS
The reserved wire control
function is indicated in broken
line table, users can purchase
the wire controller when
necessary.
Fig. 5-5
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.
Indoor unit power supply wiring
Indoor Power Supply
Circuit Breaker
Manual swtich
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
Indoor/Outdoor
Unit Signal Wire
(open)
In broken line table, users can purchase the wire
controller when necessary.
5.3 Function setting dial switches instructions
SW3(SW-1) definition: Auto Addressing Dial
13
NOTE
Wire Distribution Box
Indoor Unit
CAUTION
Close end of the connection shielded wire
Fig. 5-6
Fig. 5-7
V.2