The term fire damper is defined by approved document b fire safety volume 2 buildings other than dwellinghouses as a.
Fire damper types.
Static fire damper 3 hr ul rated.
14 x 3 4 sheet metal screws at the same spacing.
The dampers are designed for operation in the vertical or horizontal position with blades running horizontal.
Type a b c.
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Home fire dampers duct fire dampers static type duct fire damper.
Rated static fire dampers.
Type c dampers can be ordered with low pressure less than 3 w c medium high pressure from 3 w c.
1 long welds or no.
Fire dampers are devices designed to impede the spread of fire through walls floors and partitions.
Applications where fans shut down.
Fire dampers are passive fire protection products used in heating ventilation and air conditioning hvac ducts to prevent the spread of fire inside the ductwork through fire resistance rated walls and floors.
Used when airflow or velocity in the duct is a concern.
Fire dampers are ul555 tested and labeled devices installed in ducts and air transfer openings or air distribution systems designed to close upon the detection of heat.
A mechanical or intumescent device within a duct or ventilation opening that operates.
The type c fire damper is generally used where velocities are medium to high and free area is a consideration.
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The dampers are to be installed square and free from twisting or racking.
Compared to an type a damper the total square inches.
Up to 10 w c or high pressure 10 w c pressure ratings.
The stack of blades in the fire damper frame is kept out of the air stream.
A fire damper closes once the temperature of the duct becomes high enough to melt the fusible link which holds it open.
Aire technologies 05 series 3 hr.
Fire smoke dampers are similar to fire dampers in fire resistance rating and also prevent the spread of smoke inside the ducts.
They work to help stop the spread of flame through your air ducts.
When the damper or damper assembly exceeds either 48 in width or 60 in height the retaining angles should not be less than 1 1 2 x 1 1 2 x 1 8 thick and should be attached to the sleeve using 20 1 4 x 3 4 round head stove bolts at 8 on c.
This installation instruction applies to fire dampers static dynamic curtain single and multi blade types mounted in the plane of an ul approved fire partition.
