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Based on my experience in different project work in UAE, Qatar and KSA, I have seen some common mistakes performed In the installation of Fire damper, combination of Fire & Smoke Damper. In this video, I have highlighted those mistakes.

Generally, all dampers must have UL listing. UL refers to Underwriters Laboratories. UL 555 is the test standard for fire dampers; UL 555S is the test standard for smoke dampers. Combination fire/smoke dampers must meet the test requirements for both UL test standards that is UL 555 & UL 555S. Based on these tests, dampers are then given a fire rating, leakage rating.

During fire condition, fusible link in the damper melts at a specified temperature and it closes the damper.

This damper is delivered to the site with factory installed actuator to allow for remote operation. Actuators may be installed either inside or outside of the air stream.

All fire and smoke dampers must be installed in a steel sleeve which has the thickness equal to the connected duct gauge thickness but not less than 26 gauge.

This steel sleeve is normally factory supplied material with damper to minimize installation costs and to ensure that the required damper to sleeve fastening requirements are properly met.

We need to make sure the retaining angle fasteners are not interfering with the operation of the damper. Sometime, retaining angles from the manufacturer comes with the pre-punched holes with 1 inch or 1.5 inches distance between the holes. It makes the fastening requirements easier at the site.

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In my coming HVAC design videos, you can see the complete Design, Supply, Installation, Testing & Commissioning requirements which includes:-
Air Handing Units
Fresh Air Handling Units
Variable Air Volume or Terminal Units
Constant Air Volume
Flexible Duct
HVAC Ducts
Chilled water Pipes
Pipes welding
Piping Design
Chilled water Pumps
Air Terminals
Sand trap louvers, Fresh Air louver, etc
HVAC Diffusers
SMACNA requirements
How to size the VAV
HVAC Practical design difficulties
HVAC Practical Installation difficulties
HVAC Practical Testing & Commissioning difficulties, etc

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