Huawei IDS1000 User Manual page 54

IDS1000 Container Data Center
User Manual
A loop fault alarm is generated. No action needs to be taken.
Step 2 Power off the gas fire extinguishing controllers, and connect a new heat detector.
Figure 7-2
Figure 7-2 Terminals on the base
Terminals (no polarity, two-wire)
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Step 3 Align the heat detector indicator with B on the base, insert the sensor in the base, and turn it
clockwise until the heat detector is firmly secured.
Issue 01 (2014-3-15)
shows the terminals on the sensor base.
1: L2 (connected to the common terminal)
2: L1 (connected to a lower-level device)
3: L1 (connected to an upper-level device)
4: reserved
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7 Parts Replacement
48