Electrical Wiring - Hitachi FSG1 Series Technical Catalogue

4. Mounting procedures.
1. Insert the hooks of the controller to the holes
on the top of the holding bracket.
2. Push the lower part toward the holding
bracket.
3. When the click sound is heard, the controller
is attached to the holding bracket and the
mounting work is finished.
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CAUTION:
Pay attention so that the cable may not be slack. If the
cable is slack as shown in the above figure, the cable
cord (especially the naked part) may be clamped at
the hole and it may cause a faulty operation.

16.1.4 ELECTRICAL WIRING

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Standard Wiring
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ATTENTION:
- Attach the ring core (black) (accessory) when installing
the unit.
- Insert the controller cable into the ring core 2 turns as
shown in the figure above before connecting to the
terminal board. If wiring is 0.75 mm², it is necessary to
peel the outside cover.
- Fix the cable by using the band (accessory).
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Electrical Wiring for Multiple Units
This remote control switch can control sixteen units, as the
maximum.
In case of this modification, wiring connection and other
works shall be performed as indicated in the following
procedures.
(Wiring Connection for Control Circuit)
Two Remote Controls can be connected in the same unit or
unit groups. The second one is Subsidiary Remote Control
Switch as indicated below. See Chapter 10 Available
Optional Functions for more information.
INSTALLATION OF OPTIONAL REMOTE CONTROLLER
Band
Ring core
Controller
cable
Max. 16 Indoor Units
Remote Electrical Box of
Control Switch Indoor Unit
Twist Pair Cable 1P-0.75 mm²
The cables (0.75 mm² wire) of different length are prepared
as an option, which are fitted with connectors.
Remote Control Cable (Option)
Twist Pair cable: 1P-Bigger than 0.75mm²
Diameter: Æ 7
Color: Ivory
It can be also used standard shielded cable 2´0.75 mm²
connecting the shield to Earth at the electrical box side (the
max. total length is 500 m)
Standard shielded cable: (2 x 0.75mm²)
(Terminal Board side)
Cable Model PRC-10E1 PRC-15E1 PRC-20E1 PRC-30E1
Length (m) 10
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CAUTION:
- Use the twist pair cable (1P-0.75mm²) as transmitting
wire cable for prevention of the malfunction (The total
cable length is max. 500m).
When the total cable length is within 30m, other type
cable (more than 0.3mm²) can be used.
- Keep a distance more than 30 cm between the remote
control cable and the transmission wire of Indoor units.
- In the case that multiple indoor units are controlled
simultaneously, set the refrigerant cycle number and
the address of Indoor units as indicated.
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Electrical Box of Remote Control
Indoor Unit Switch (Subsidiary
Solderless
terminal (X Type)
1.25-3X
Solderless
terminal (X Type)
1.25-3X
(Remote Control Switch side)
15 20 30
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