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6. Electrical Wiring
6.2 Electrical Wiring for Outdoor Unit
Connect the electrical wirings according to the figures on
the right.
1. Connect the power supply wires to L1, L2, L3, and N
(for 400V, 380-415V) or R, S and T (220V) for the three
phase power source on the terminal block TB1 and
earth wire to the terminal in the electrical box.
2. Connect the communication wires between the
outdoor and indoor units to the TB2 terminals 1
and 2 on the PCB1. As for the communication wires
between outdoor units in the same refrigerant cycle,
connect them to the TB2 terminals 3 and 4 on the
PCB1.
3. Tighten screws for the terminal block according to
the following table.
< Required Tightening Torque >
Size
M3.5
M4
M5
M6
M8
M10
4. Main Fuse Capacity
(Standard Type)
3N~, 380-415 V/50 Hz
3N~, 380V/60 Hz
3~, 220 V/60 Hz
(High Efficiency Type)
3N~, 380 - 415 V/50 Hz
3N~, 380 V/60 Hz
Screw (M8)
Attach
insulation sleeve.
Earth Terminal
(Connect securely cable.)
Earth Wire
81
Tightening Torque
0.7 to 1.1 N·m
1.0 to 1.3 N·m
2.1 to 2.4 N·m
4.0 to 5.0 N·m
9.0 to 11.0 N·m
18.0 to 23.0 N·m
8 HP 10, 12
14 HP 16, 18
20, 22
HP
HP
20A
25A
32A
40A
10, 12
18 to
8 HP
HP 14 HP 16 HP
22 HP
30A
40A
50A
60A
8, 10
12, 14
16 to
HP
HP
20 HP
20 A
32 A
40A
< 220V/60Hz >
Terminal Block for
Power Source (TB1)
Cable Clamp
Rubber Bush
(Accessory)
(1) Detail of Electrical Box Terminal
Attach
insulation sleeve.
Electrical Box
(1) Terminal Block
for Power Source
(5) Power Source Wiring
Outlet (Rubber Bush)
Fix the control wiring
using a clamp.
Comm. Wiring
Power Source Wiring
Cord Clamp (Accessory)
NOTE:
Fix by accessory screw
(for fixing comm. wiring).
24 to
HP
28 HP
50A
63A
(2) Detail of Terminal Block for Control Circuit
24 to
28 HP
75A
100A
(3) Details of Bottom Base Wiring Outlet
(4) Details of Piping Cover Wiring Outlet
NOTES:
1. Install accessory rubber bushes to the wiring outlets.
2. Seal hermetically the end of conduit pipe by using putty, etc.
(for water protection)
(5) Ring Core (White, Accessory)
Wind each wire 5 times around the
ring core as shown on the right.
< 400V/50Hz, 380-415V/50Hz, 380V/60Hz >
Terminal Block for
Power Source (TB1)
Screw (M8)
Cable Clamp
Rubber Bush
(Accessory)
TB1
Cord Clamp
(for fixing power
source wiring)
Do not apply the main power
source to TB2 and TB3.
TB3 (M4)
TB2 (M3.5)
1
2
1
2 3 4
ODU to ODU Terminals
H-Link Terminals
For communication
For communication between ODU and
between ODUs
IDU or between ODUs of other
refrigerant cycle system
For Power Source Wiring
( 65 Knockout Hole)
NOTES:
For Comm. Wiring
1. Install accessory rubber bushes
( 55 Knockout Hole)
to the wiring outlets.
2. Seal hermetically the end of conduit
For Comm. Wiring
pipe by using putty, etc.
( 33 Knockout Hole)
(for water protection)
For Power Source Wiring
( 65 Knockout Hole)
For Comm. Wiring
( 33 Knockout Hole)
For Comm. Wiring
( 55 Knockout Hole)
Communication Wires
and Earth Wire
Ring Core
Earth Terminal
(Connect
securely cable.)
Earth Wire
(5) Comm. Wiring Outlet
(Rubber Bush)
Printed Circuit Board
(PCB1)
TB2
(2) Terminal Block
for Control Circuit
(5) Comm. Wiring Outlet
(Rubber Bush)
(Unit: mm)
(Unit: mm)
A16381E84N-rev.1
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