Shenzhen Envicool Technology Co., Ltd.
2.6.3 IF pump cabinet cable connection
The pump cabinet needs to be connected to the power line and the communication line:
The power cord is powered from the indoor unit or the outdoor electromechanical control
box, using a three-phase power supply, and the input power is connected to the pump
cabinet air switch.
The communication unit between the pump cabinet and the host computer can
communicate with the host computer through the RS485 interface. It is recommended to
use twisted-pair shielded cables for communication cables with a cable diameter of 2×
0.5 mm
2
. The wiring diagram is shown in Figure 2-26.
Fig. 2-26 Schematic diagram of the communication connection between the pump cabinet and the
host computer
2.6.4 Connection of power cables of low-temperature components
The low-temperature components need to be connected to the power cord: (1L+N+PE),
the solenoid valve control line of the low-temperature component (2*0.75mm); both the
power cord and the control line are connected from the indoor unit. The electrical
connections of low-temperature components are shown in Figure 2-27.
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