Optional) Installing Signal Cables - Huawei FusionCol8000-E240 User Manual

FusionCol8000-E240 Modular Indirect Evaporative
Cooling System
User Manual

4.4.2 (Optional) Installing Signal Cables

Prerequisites
Signal cables must be routed through protective tubes for protection.
The device can be connected to a smoke sensor, remote startup/shutdown signal,
public alarm signal, and water sensor. The following describes how to connect a
water sensor.
Context
Figure 4-17 Signal cable terminal (using X501 as an example)
Table 4-6 Signal table
No.
1
2
3
4
5
6
7
Issue 01 (2021-01-30)
NO TE
The preceding figure shows the arrangement of signal terminals X502, X504, and X505.
X501 X502
Smoke Water sensor
sensor
Smoke Water sensor
sensor
Remote Fresh air
startup/ damper 24 V
shutdown DC
+
Remote Fresh air
startup/ damper GND
shutdown
Common Fresh air
alarm 1+ damper U
(feedback)
Common Fresh air
alarm 1– damper Y
(control)
Common Reserved
alarm 2+
Copyright © Huawei Technologies Co., Ltd.
4 System Installation (FDC Scenario)
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 supply air
damper 24 V DC
Indoor supply air
damper GND
Indoor supply air
damper U (feedback)
X505
Indoor return air
damper 24 V DC
Indoor return air
damper GND
Indoor return air
damper U
(feedback)
Indoor return air
damper Y
(control)
Fresh air exhaust
damper 24 V DC
Fresh air exhaust
damper GND
Fresh air exhaust
damper U
(feedback)
77