Ventilation System Dampers June 23rd, 2015
I recently interacted with IIAR (International Institute of Ammonia Refrigeration) on the issue of ventilation system dampers. My original question, along with the response from IIAR is included below: Question: ANSI/IIAR 2 Addendum B ยง13.3.3.4 requires that “If motorized dampers are utilized they shall be of the power to close and spring to open type.” […]