Electrical Wiring Connection For Indoor Unit - Hitachi AirCore 700 Operation Installation Maintenance Manual

6.2 Electrical Wiring Connection for Indoor Unit

1. The electrical wiring connection for the indoor unit is shown below.
2. Remove the electrical box cover (1 screw).
3. Loosen two (2) screws for the wiring support plate.
4. Connect the cable of an optional remote control switch or an optional extension cable to the terminals
inside the electrical box through the connecting hole in the cabinet.
5. Connect the power cord and earth wirings to the terminals in the electrical box.
6. Connect the wirings between the indoor unit and the outdoor unit to the terminals in the electrical
box.
Outdoor Unit
TB2
Earthing for
Power Cord
Power Cord
220-240V~50Hz
Transmission cable
Insert the transmission
cable into the ring core
and wrap it around
Wired Remote Controller
ring core
•
The ring core needs to be installed on the transmission cable between the fixed wire clamp and TB2,
where additional insulation rubber is peeled off.
[Procedure]
Insert the transmission cable into the ring core as shown in the below figure before connecting to the
terminal board. Wrap the transmission cable around the ring core. Fix the cable and the ring core by
using the band (accessory) in the electrical box.
Transmission
(Transmission)
1 2
Communication cable
Ring Core
Earthing for Transmission Cable and Wired Remote Controller
TB2
cable
Indoor Unit
R,S,C
1 2 A B
Power Supply
(220-240V ~50Hz)
Supply Terminal Board(TB1)
Communication Terminal Board(TB2)
Transmission Cable
-18-
6. Electrical Wiring
controller
cable
N
L
Electrical Box
Band
Ring Core