Electrical Wiring For Indoor Units; Rci Units - Hitachi FSG1 Series Technical Catalogue

ELECTRICAL WIRING
15
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15.3 ELECTRICAL WIRING FOR INDOOR UNITS

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ATTENTION:
– Check the item below before turning ON the main
switch. In case that the power source for indoor unit
240V (nominal voltage), change CN21 (connector) to
CN20 of transformer (TF) in the electrical control box
as shown.
Connector for
240V *
Connector for
220V *
*) RCD and RPK instead of CN20 is CN27
and instead of CN21 is CN28
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ATTENTION:
– The screws for terminal box can not be removed from
the terminal box to protect the screws from falling.
When fastening the terminal, ensure that the screw is
fastened through the hole of terminal.
Screw
– Check to ensure that the terminal specification, shall
be applied to the screw. (M4 for power supply, M3.5
for operating line) of the terminal box.
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CAUTION:
– Wrap the accessory packing around the wires, and
plug the wiring connection hole with the seal material
to protect the product from any condensate water or
insects.
– Tightly secure the wires with the cord clamp inside the
indoor unit.
– Lead the wires through the knockout hole in the side
cover when using conduit.
– Secure the cable of the remote control switch using
the cord clamp inside the electrical box.

15.3.1 RCI UNITS

The electrical wiring connection is shown below. The
intermediate connection between the indoor unit and the air
panel should be referred to chapter 12.2.5.
1. Connect the cable of the remote control switch or an
optional extension cable to the connectors on the printed
circuit board inside the electrical box through the
connecting hole in the cabinet.
2. Connect the power supply and ground wires to the
terminals in the electrical box.
3. Connect the wires between the indoor unit and the
outdoor unit to the terminals in the electrical box.
Electrical Box
Connection Hole
(2-Ø32.5 Knockout)
Wiring
View from B
Power wires
Transmission
wires
RCS PC-1H(E)
(optional)
RCS PC-2H2
(optional)
Air Panel
Sealing Hole
Wiring
Connection
Factory-Supplied
Insulation Material
Power Wires
Transmission Wires.
Cable for Remote Control panel
Clamp
Connector