Fire Doors with Fire Dampers
Fire Doors with Fire Dampers
(OP)
I have a job where they are asking to change a room into a server room. They want to put a fire door and damper on the door with a fan to suck in conditioned air from the main conditioned area. Then the hot air in the server room will be exhausted through the top. Has anyone ever heard of this being done or why would you even do this? Wouldn't you suck in room space air? Which is around 70 to 72 degrees. Is there a manufacturer that makes these doors?





RE: Fire Doors with Fire Dampers
I've not heard of a fan in a fire rated door before (if that is what you meant), but grille manufacturers do offer fire rated door grilles.
As long as you have adequate cooling capacity in the adjacent space where the air will be drawn from, there is not a problem with doing it that way. I usually calculate a 10 degree delta T (85 degree server room temp is usually not a problem) drawing in conditioned air from an adjacent space then discharging it into the plenum space where it is picked up by the HVAC unit's return. The method you describe is the old school way. The majority of the time now I use a dedicated unit for the space - usually a cassette type is sufficient.
Andy W.
RE: Fire Doors with Fire Dampers
I doubt you can get a fire rating on a door that is that much grille, even if the grille has a rated fire damper.
RE: Fire Doors with Fire Dampers
Stephen Haines, P.E.
Haines Fire & Risk Consulting
www.hainesfire-risk.com
RE: Fire Doors with Fire Dampers
Don Phillips
http://worthingtonengineering.com