‎@abdulkarimtech1
In this video I have shown the Ahu unit connected to multiple Vav with a branch duct.
Vav is VARIABLE AIR VOLUME, when set temperature of thermostat is achieved as room temperature,then vav gradually lowers the supply air flow and hence static pressure inside duct tends to increase, which inturn gives the signal to Vfd & Vfd reduces the fan motor speed as per the Load requirment.
I hope this video will be useful for everyone...!
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Thanks & regards
Abdul