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Is there an NFPA requirement stating a Fire Alarm Relay must be tied directly to the VFD for HVAC shutdown?

Question asked by pwelch on Jan 23, 2019
Latest reply on Jan 24, 2019 by sourabhchowdhuri

This is in a hospital. The current configuration is a normally closed loop, with other safeties wired in series. Th GC is stating that no other safeties can be wired in this loop. It must be dedicated as HVAC shutdown, directly to the VFD.

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