(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
(b) have a temperature rating approximately 30°C above the maximum temperature that would exist in the system either with the system in operation or shut down.
(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 shall be installed in the vertical or horizontal position 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.
3.1.8.9A. Installation of Smoke Dampers
(1) Where smoke dampers are used as a closure in an air-transfer opening, they shall be installed in the plane of the fire separation.
(2) Where combination smoke and fire dampers are used as a closure in a duct, they shall be installed within 610 mm of the plane of the fire separation, provided there is no inlet or outlet opening between the fire separation and the damper.
(3) Except as required by a smoke control system, smoke dampers and combination smoke and fire dampers shall be configured so as to close automatically upon a signal from an adjacent smoke detector located as described in CAN/ULC-S524, “Installation of Fire Alarm Systems”, within 1.5 m horizontally of the duct or air-transfer opening in the fire separation,
(a) on both sides of the air-transfer opening, or
(b) in the duct downstream of the smoke damper or combination smoke and fire damper.
(4) Smoke dampers or combination smoke and fire dampers shall be installed in the vertical or horizontal position in which they were tested.
(5) A tightly fitted access door shall be installed for each smoke damper and combination smoke and fire damper to provide access for their inspection and the resetting of the release device.