BU Module
17
6
Electrical Wiring Work
6.1 Wiring Connection
The “L1”, “3” terminals are connected to the live wire, the “L2”,”N(1)” terminals are connected
to the neutral wire and the”2” terminal is connected to the transmission line.
Fig. 25
6.2 Requirements of Power Circuit and Cable
Table 10
Phase and frequency
1Ph,60Hz
Voltage 208/230V
MULTI48HP230V1AO
Recommended cable of outdoor unit
(Pieces × Sectional area)
MULTI56HP230V1AO
3×6.0 mm
2
Recommended cable of BU module (Pieces × Sectional area)
3×0.75 mm
2
Transmission line (Pieces × Sectional area)
2×1.5 mm
2
Recommended cable of indoor unit (Pieces × Sectional area)
4×0.75mm
2
MULTI48HP230V1AO
40A
MULTI56HP230V1AO
40A
Capacity of the air switch
BU module
10A
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Note:
The total length of the transmission line between the outdoor unit and the furthest BU module is
not more than 55m. Otherwise, the system cannot work possibility.
The specifications of the power cable and transmission line listed in the table above are
determined based on the maximum power (maximum amps) of the unit.
The specifications of the power cable listed in the table above are applied to the
conduit-guarded multi-wire copper cable (like, YJV copper cable, consisting of PE insulated
wires and a PVC cable jacket) used at 40
and resistible to 90
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, and
shall be at least those of
Summary of Contents for RFX12A
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