Up to 10 w c or high pressure 10 w c pressure ratings.
Fire damper types.
Type a dampers are the easiest and fastest type to install and are mostly used in low pressure part of duct systems up to 2 w c.
Type c dampers can be ordered with low pressure less than 3 w c medium high pressure from 3 w c.
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.
The stack of blades in the fire damper frame is kept out of the air stream.
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.
The dampers are designed for operation in the vertical or horizontal position with blades running horizontal.
Fire dampers are installed in fire walls fire barriers fire partitions and horizontal assemblies.
Used when airflow or velocity in the duct is a concern.
Static fire damper 3 hr ul rated.
Applications where fans shut down.
Compared to an type a damper the total square inches.
Home fire dampers duct fire dampers static type duct fire damper.
When a rise in temperature occurs the fire damper.
A mechanical or intumescent device within a duct or ventilation opening that operates.
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The type c fire damper is generally used where velocities are medium to high and free area is a consideration.
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.
They work to help stop the spread of flame through your air ducts.
Fire dampers are devices designed to impede the spread of fire through walls floors and partitions.
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Rated static fire dampers.
14 x 3 4 sheet metal screws at the same spacing.
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.
The dampers are to be installed square and free from twisting or racking.
Type a b c.
A fire damper closes once the temperature of the duct becomes high enough to melt the fusible link which holds it open.
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