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Mechanical Room Shunt trip

Mechanical Room Shunt trip

Mechanical Room Shunt trip

(OP)
I have a room that holds about 10 pumps of all sizes, 3 chillers (2 centrifugal (R-123) , 1 Screw (R -134a), A HX, 6  VFD drives and A MCC in the central plant. When you design for a shut down or panic button is the intent on shutting down the Chillers themselves or is the intent on shutting down the Central plant as a whole? Keep in mind i have  a Refigerant monitor Whith bells and whistles and a 24 hour operting ex fan for the emergency ventilation. I would think you would want the plant to shut down not just the chillers themselves. Any help would be appreciated

thank you

RE: Mechanical Room Shunt trip

I thought panic buttons were for boilers and gas fire equipments etc in case of a fire or gas leak?  Where I live it is hot and we never install boilers so never install panic buttons.

With electrical equipment the danger would be electrocution so a panic button should cut off all electrical supplies.

Note that suddenly cutting power to chillers does have potential for damaging the equipment!

RE: Mechanical Room Shunt trip

The hazard is the chillers.  No code requirement for shutting the pumps down that I am aware of.

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