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Bosch ODU-FA Installation & User Manual page 4

Outdoor unit failure alarm

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4 | SYSTEM WIRING SPECIFICATION
4.
SYSTEM WIRING SPECIFICATION
The following wiring layouts are acceptable.
Outdor unit
Outdor unit
Outdor unit
Fault alarm
CAUTION
The maximum outdoor units that one ODU-FA can connect to is ≤32. The maximum refrigeration systems that one ODU-FA can connect to is ≤8.
5.
FAULT ALARM SYSTEM WIRING DIAGRAM
RS232 terminal:
Plug in the COM port of computer
RS485 invert RS232 module
F1 F1 F2 F2 E
Connect other
central controller
Connect a 120 ohm resister at
the beginning and the end of the
communication circuit.
F2 F1 E K2 K1
Computer communication
Air-conditioner
communication connecting
connecting
Main control
panel
NO.1 Outdoor unit(main unit)
Power input
KWH meter
power
Connect a 120 ohm resister at
the beginning and the end of the
communication circuit.
Main control
panel
NO.1 Outdoor unit(main unit 3)
6 720 862 462 (2017/05)
Outdor unit
Outdor unit
Better way of stripping the communication wire
K2 K1 E
K2 K1 E
Main control
panel
NO.1 Outdoor unit(main unit 1)
Notice: when the KWH meter is
connected to outdoor unityou can
read energy consumption in the
outdoor monitor!
K2 K1 E
K2 K1 E
Main control
panel
NO.1 Outdoor unit(main unit 2)
Outdor unit
Outdor unit
Outdor unit
Fault alarm
Ground the shield-
Ground the shield-
ing layer of the
ing layer of the
K2 K1 E
Main control
shielded cable.
panel
shielded cable.
NO.1 Outdoor unit(main unit 2)
Ground the shield-
Ground the shield-
ing layer of the
ing layer of the
K2 K1 E
Main control
panel
shielded cable.
shielded cable.
NO.1 Outdoor unit(main unit 1)
Outdor unit
Outdor unit
Outdor unit
Outdoor unit system figure
Main control
panel
Outdoor unit
K2 K1 E
Main control
panel
NO.1 Outdoor unit(main unit 3)
Fault alarm figure
wiring base figure
K2 K1 E
Main control
panel
NO.1 Outdoor unit(main unit )
Computer communication
connecting
CLIMATE 5000 VRF
Outdor unit
K2 K1 E
Fault alarm
Air-conditioner
communication connecting

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