BU Module
20
NO.
1
2
3
Name
Terminal black for BU
module power supply
Ground screw
Terminal black for indoor unit
power supply
NO.
4
5
6
Name
DIP switch
Printed circuit board
Terminal black for transmission line
Fig. 27
3)
Let the power cable and transmission line go through the rubber ring. In order to protect the
power cable and transmission line from damaging by the hole, the rubber ring cannot fall from
that, otherwise, it
may cause electrical shock or fire etc.
4)
Connect the power cable of the BU module to the L1, L2 terminals with the sign of Power and
as well as the ground screw.
5)
Connect the transmission line of the BU module to the N(1), 2 terminals with the sign of
Outdoor unit/BU.
6)
If the transmission line need to be connected to the other BU module, please connect the extra
line to the N(1), 2 terminals with the sign of BU.
7)
Connect the power cable of the indoor unit to the N(1), 2 and 3 terminals with the sign of
Indoor unit A (B and C) and as well as the ground screw.
8)
Fix the power cable and transmission line firmly by cable fixing clip.
9)
Screw the electrical equipment plate.
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Caution!
The transmission line and the power cable must be separated and separated with an interval of
at least 2cm; otherwise it may be
result in communication problem.
Confirm the each cable connected to the terminal screw is exactly and securely after finishing
the electric work.
Fix each ground wire separately with the ground screw.
When connecting indoor units, make sure to connect refrigerant pipes and power cables to the
same connection ports marked with matching signs (A, B, C ,D and E).
If the connecting wire is connected to the terminal incorrectly, the unit will not work normally.
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Содержание RFX12A
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