Primary pump in chiller!! Primary pump कैसे काम करता है?!! HVAC TRAINING

Chiller me primary pump kaise kaam karta hai. chilled water line me primary pump ka kya kaam hai.
AHU/FCU/FAHU se return water ko suck karke chiller tak supply karta hai primary pump aur phr se chilled water cycle me circulate karta hai.
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