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Smoke Damper Presentantion
- 1. SMOKE DAMPERS: WHAT ARE THEY AND HOW TO DOCUMENT THEM IN YOUR DESIGN By: Christopher McArdle, P.E.
- 11. Curtain Blade Fusible Link
- 12. Curtain Blade with Fusible Link Break Away Joint
- 14. Codes and Fire Dampers
- 21. Do You Know the Difference Between a Smoke Barrier and Smoke Partition?
- 26. EC detail of a smoke damper
- 36. Duct Mounted Smoke Detector Sampling Tube Smoke Sensor Reset Button
- 38. Auxiliary Contacts Alarm Indicator Lamp Who Provides What? 16720 “Fire Alarm and Smoke Detection Systems”
- 41. Actuator Smoke Detector Sampling Tube
- 42. Smoke Detector
- 45. Control Smoke Damper Thru FMS.
- 46. Control Smoke Damper thru FMS or DDC System.
Editor's Notes
- Sleeve: Frame that houses the Fire Damper. Curtain Blade: Closes prevents the passage of fire when the fusible link melts. Break Away Joints: Allow the ductwork to fall without ripping the fire damper out of the wall. Fusible Link: Melts at 165 degrees F to let the curtain blade close. Access Door: Allows someone to inspect or service the fire damper.
- Vertical Installation Sleeve Curtain Blade Both type “A” and type type “B” installations. Fusible Link is not shown. Access damper in ductwork is not shown. Safety: Never stick any fingers or arms through a fire damper opening. BROKEN FINGERS!!!!!
- Horizontal Installation.
- Be careful when working in a renovation or an addition to an existing building. Part of the building might not be fully sprinklered or the existing building might not be fully sprinklered.
- Note the smoke barrier in the dark dashed line. Note soiled utility rooms enclosed with a smoke partition. Talk to Architect early in project about routing of smoke barrier. Minimize amount of ductwork penetrations. Cost of average Smoke Damper is $1000: materials, damper installation, power for actuator, wiring to FAS. Try to minimize duct penetrations in smoke barriers and smoke partitions.
- Comb FD/SD are not made with fusible links anymore. They now are built with a thermal disk that trips at a set temp. The power circuit is opened and the damper go to its normal position. Usually closed.
- EC standard smoke / fire damper installation detail. I ADDED THE SMOKE DETECTOR. Sleeve Damper (parallel bladed) Actuator: Can be installed outside of the duct or inside the duct. Recommend outside installations to reduce pressure drop on system. Smoke detector is not shown. Interface Module is not shown.
- Important to review all these codes and standards and imply most stringent requirement.
- Important to review all these codes and standards and imply most stringent requirement.
- Important to review all these codes and standards and imply most stringent requirement.
- Important to review all these codes and standards and imply most stringent requirement.
- If a smoke damper is installed in a wall opening and not ducted, the detector shall be located on the wall within 5 feet horizontally of the damper. Most duct mounted smoke detectors require a minimum air velocity in order to function. Area Smoke Detectors: Double check with electrical engineer for area smoke detector coverage. Total coverage is rarely achieved. Smoke dampers are required in almost all Smoke Barrier Penetrations. Not when no opening on either side of barrier. Smoke dampers are only required in transfer duct opening in smoke barriers. Double check IBC for other requirements. I did not list all requirements.
- NFPA 72 does not directly says a smoke detector must be within 3 feet from a smoke damper.
- Copy of EwingCole’s old 16720 “Fire Alarm and Smoke Detection Systems” Spec. Calls for a set of auxiliary contacts on the smoke detectors. Indicator lamp for detectors above ceilings. Who provides what.
- Plan drawing of bathroom at Cornell University Resident House. Note Shaft Show location of smoke/ fire damper. Location of detector with respect to shaft wall and first takeoff.
- Items to note: Shaft wall. Actuator on bottom of duct. Smoke detector location with respect to first branch take off of main. Access panel has been installed yet.
- Smoke detector sampling tube is visible through the access panel. Note the size of the smoke damper actuator.
- Smoke detector mounted on the side of the duct.
- Coordination between location of access door for damper and detector with ceiling access door in dry wall ceiling.
- Isolation Dampers for a AHU greater than 15000 CFM. Dampers are closed through the Fire Management System. End Switch is not shown on isolation dampers. Sequence of Operation: 1) Detector senses smoke. 2) Detector sends signal to the FMS. 3) FMS sends signal to AHU motor starter through addressable Interface Module (IM). 4) Motor starter shuts down the supply fan and return fan. 5) Addressable Smoke detectors close isolation dampers after time delay for fan spin down.
- Smoke damper wired to be closed by the Fire management system or through the DDC system.