Huawei FusionDC1000A Commissioning Manual page 74

FusionDC1000A Prefabricated All-in-One Data
Center
Commissioning Guide (IT Scenario)
Step 9 Blow smoke towards the smoke detector using a smoke pistol until the smoke
detector indicator changes from blinking once every 6s to steady on to trigger a
smoke detector fire alarm.
Step 10 Heat the heat detector using a heating device until the heat detector indicator
changes from blinking once every 6s to steady on to trigger a heat detector fire
alarm.
● The fire alarm indicator on the fire alarm control panel stays red, and the fire alarm bell
rings constantly.
● The fire alarm horn/strobe is triggered, and the gas release countdown starts. (The
countdown time is configurable and is set to 30s by default.)
Step 11 After the countdown ends, use a multimeter to check the electromagnetic valve
drive voltage generated by the fire alarm control panel.
The fire alarm control panel should generate a voltage of 24–27.5 V DC to activate the
electromagnetic valve, and the gas release indicator should turn on at the same time.
Figure 5-2 Measuring the voltage between the two terminals of the
electromagnetic valve
Step 12 Commission the pressure announciator.
Issue 02 (2022-12-15)
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● In Auto mode, the Auto/Manual indicator is on. In Manual mode, the Auto/Manual
indicator is off.
● If the status is Manual, the fire alarm control panel generates no electromagnetic valve
driving voltage when fire alarms from the smoke detector and heat detector are
triggered.
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When a fire alarm is triggered:
● The fire alarm indicator on the fire alarm control panel turns from off to red, and the
fire alarm bell rings.
● Do not clear the alarm and proceed to the alarm simulation for the smoke detector.
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