Continuing in a series of strange things that I have seen while consulting at hospitals…
We already talked about this issue on ‘Strange Observations – Part 20’ posted April 5, 2018, but it’s worth revisiting.
You cannot have home-made components installed on the fire alarm system. The threaded rod is not UL listed for this purpose.
NOTE: I’ve received some skepticism on the validity of saying the door release equipment is part of the fire alarm system. I base my position on section 21.8 of NFPA 72-2010, which says the door release equipment is a function of the fire alarm system, and according to section 10.3, all equipment used in conformity with NFPA 72-2010 must be listed for the purpose for which it is used. If the manufacturer of the door release device obtained a UL listing for the threaded rod, then I stand corrected. But as far as I know, that has not happened.