Post 37 made on Tuesday September 15, 2009 at 23:59 |
Gizmologist09 Advanced Member |
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The other interesting thing is that the plenum rating does not have anything to do with flame spread. It is only concern with toxic fume propagation which is also ironic as most commercial buildings equipped with air handlers have automatic damper and or shut down controls tied to the fire alarm system.
In case of alarm, the air handlers shut down automatically and cannot be restarted with resetting the fire alarm.control system.
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