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Connecting Power Cables
(Side cabling)
(Optional) Connecting Signal Cables
Signal cable terminal (using X501 as an example)
No.
X501
Smoke sensor power supply
1
(12 V DC)+
2
Smoke sensor feedback–
Port for remote startup and
3
shutdown+
Port for remote startup and
4
shutdown–
Port 1+ for reporting common
5
alarms
Port 1– for reporting common
6
alarms
Port 2+ for reporting common
7
alarms
Port 2– for reporting common
8
alarms
(Optional) Connecting T/H Sensors Outside Cabinets
6.2
The following figure shows the position of the return air temperature and humidity sensor in the
smart cooling product. The cable passes through the cable hole to remote T/H sensor. Set the
sensor positions based on their location and the following table.
1. Connect the IN port on the first T/H sensor outside the cabinet to the RS485/12V port on the
main control board.
The left figure shows the arrangement of signal
cable terminals X502 and X504.
X502
Water leakage detection (water
leakage in the floor)
Water leakage detection (water
leakage in the floor)
Fresh air damper 24 V DC
Fresh air damper GND
Fresh air damper U (feedback)
Fresh air damper Y (control)
N/A
N/A
8
(Bottom cabling)
X504
Outdoor exhaust air damper 24 V DC
Outdoor exhaust air damper GND
Outdoor exhaust air damper U (feedback)
Outdoor exhaust air damper Y (control)
Indoor side supply air damper 24 V DC
Indoor side supply air damper GND
Indoor side supply air damper U
(feedback)
Indoor side supply air damper Y (control)
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