When cleaning FCUs, we need to turn off the order to open the access panel.
Lastly, we turn on FCU at the thermostat to check that it's working properly...
When cleaning VAV box, we have to switch it off, and AHU connected to it.
We have to remove any dust inside VAV box using brush or vacuum cleaner.
Air leaks in VAV box affect the cooling or heating in room.
thermostat connected to VAV box sends signal to actuator to change the position of damper.
When inspecting thermostat, we should check the voltage between hot, cold, and fan control wires with COM, respectively.
When cleaning FCU, we need to turn it off at its thermostat to open the access panel.
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Question #3 When cleaning VAV box, we have to switch off , and connected to it..
When cleaning VAV box, we have to switch it off, and AHU connected to it..
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