The Ontario Building Code | Installation of Fire Dampers
188.8.131.52. installation of Fire Dampers
(1) A fire damper shall be arranged to close automatically upon the operation of a fusible link conforming to ulc-S505, "Fusible Links for Fire Protection service", or other heat-actuated or smoke-actuated device.
(2) A heat-actuated device referred to in Sentence (1) shall,
(a) be located where it is readily affected by an abnormal rise of temperature in the duct, and
(3) A fire damper shall be installed in the plane of the fire separation so as to stay in place should the duct be dislodged during a fire.
(4) A fire damper tested in the vertical or horizontal position shall be installed in the manner in which it was tested.
(5) A tightly fitted access door shall be installed for each fire damper to provide access for the inspection of the damper and the resetting of the release device.