Hvac damper types most of us, when we think of an air damper, think of rushing to a freshly lit fireplace to flip the soot covered handle that opens the chimney as the room fills with smoke. Hvac damper types air flow control heating and cooling. Where the fire damper sleeve is exposed to the airstream, the metal sleeve will be of the same material as the duct system. With automated shutoff at specified temperatures protect your havc systems. Hse information sheet testing regime for offshore trhvac. Performance of fire damper and hvac duct with fds simulation. Because they are installed in vertical barriers, these particular fire dampers have a spring loaded design.
Fire damper application guide fire and ceiling radiation dampers use this application guide to help determine what type of fire damper best suits the application. Fire dampers, smoke dampers, combination firesmoke dampers, ceiling radiation dampers and any other type of damper that performs a safety function in buildings fire protection or lifesafety system must work properly at the appropriate time during a fire or smoke emergency. The damper frame must not be penetrated by any foreign objects that would affect fire damper operations. As a safety factor to achieve a given rating, the damper is. Hvac control dampers are used to help control the flow of outside air, conditioned air, return air, exhaust air and combustion air in hvac systems. The operation of the damper must verify that there is no damper interference due to rust or bent, misaligned or damaged frame or blades, or defective hinges or other moving parts. Includes stainless steel closure spring, ul fusible link. The airflow application, static or dynamic is largely determined by the hvac system blower operation. Contractors are encouraged to provide copies of this paper to building owners, architects, engineers and code officials so that all parties gain a better understanding as to the proper and approved methods of fire damper installation. Installation guides lloyd catalog order guide spanish order guide english 0. Today, we offer a complete line of hvac dampers and air control products including volume control, balancing, round, zone, fire, smoke and combined.
Heating, ventilation, air conditioning hvac and fire damper technicians. Method statement for installation of hvac supply, return. Maintenance of fire protection systems and equipment section 18. The hazard from failure of hvac fire dampers to close on demand is defined as a loss of tr habitat via gassmoke ingress etc. Siemens openair fire and smoke electronic rotary damper actuators are certified to ul555s standards with approved manufacturer smoke control and combination firesmoke damper assemblies. Jul 27, 2018 a fire damper is an important part of commercial fire safety preventing the spread of flame and smoke but it can lead to a loss of airflow in a building when they close that can lead to a service call. This states the general requirements for hvac ductwork, including the use of fire dampers. The device comprises a scissor tool that is handdriven for separating the closed shutters without requiring the user to exert force on the doors while opening. Dampers for hvac are available in our parts hvac online store. Hvac damper, fire damper, smoke damper, hvac damper. This will allow users of the system to direct heat or cool air to areas high occupancy areas, allowing the unoccupied areas to cool down. The minimum velocity at which a dynamic closure rating can be issued is 2000 fpm. Extended ratings can be achieved in increments of fpm.
Dynamic fire dampers have been tested under specific airflow and static pressure conditions in order to ensure that the damper will close in todays hvac designs that utilize fans on smoke management systems. Dayton fire damper, dynamic, vertical or horizontal mounting. Verifies that the stairwell egress doors are in the specified position. Damper products serve a valuable role in air movement. The special requirements pertain to the interlocking with fire protection systems, smoke removal systems, clean air systems, hazardous or noxious effluent control etc. In the case of fire, the damper is triggered either by a fusible link at 72 c or.
The spring loaded design is where the doors of the damper have a spring like action when they are forced to shut. Attachment of retaining angles must not restrict operation of the fire damper. A fire damper tool is provided for assisting a user opening the shutters of an hvac fire damper after the shutters have closed. A fire damper is designed to remain open during normal conditions and slam shut to prevent the spread of flame, heat and smoke during a fire. The most common damper blade shapes are triple vgroove and airfoil. Master flow 20 speediproducts 10 field controls 1 set custom price range. Fire damper sleeve clearance within wall floor opening a. Verifies that the hvac system operates as specified. Firesmoke damper installation firesmoke dampers must be installed so the leading edge of the closed blades are within the barrier it is intended. Although the primary purpose of a fire damper is to maintain the fire resistance of a fire separation, its inclusion in the hvac system of a building necessarily affects the air handling characteristics of the system during the normal. Johnson controls is committed to customer satisfaction, and thats why we custombuild each of our hvac dampers to suit your specific size and model requirements. They can be used in intake, exhaust, or mixed air applications.
Gauges shall conform to smacna or ashrae duct standards. Fire damper and a smoke damper are required at a single location. Differential pressure across stairwell egress doors 8% of exam 10. Triple vgroove blades are used in hvac systems used in all hvac systems and should be utilized in systems greater than 2000 fpm. 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. Fundamentals of hvac controls the application of heating, ventilating, and airconditioning hvac controls starts with an. The hvac damper is a simple enough concept, direct or redirect airflow in your air conditioning or exhaust system according to your specific requirements. Refer to smacna fire, smoke and radiation damper guide for hvac systems for information on ductmate, nexus, ward, tdc and tdf systems and any additional information fig. Control strategies the simplest control in hvac system is cycling or onoff control to meet part load conditions. The heating, ventilating, and air conditioning hvac fire damper, smoke damper, and smoke control system inspection verification program shall be established for the purpose of ensuring that fire dampers, smoke dampers, and smoke control systems are in working order to prevent the spread of fire and smoke within walls, floors, and ceilings. Choose from both rectangle and round configurations designed specifically for things like safety applications, lowleakage and heavy duty industrial needs, and backdraft for pressure relief.
Prime aerovac fire damper is designed keeping in mind the safety of human life and property. Standards ul standard 555, nfpa 80, 90a and 101, ibc, csfm, nyc mea. Fire damper, dynamic, vertical or horizontal mounting type. The fd can be installed vertically fdv or horizontally fdh and is meant for static hvac systems fans turn off in a fire only. To prevent the spread of fire and smoke, use dampers from wozair hvac specialists where safety is paramount.
The tool comprises a first and second set of scissor arms connected to a common pin. We sell discount wholesale damper supplies, hvac tools and more. Clearance requirements for damper sleeves within a wall opening are based on. The nca model fd fire damper utilizes a curtain style blade to prevent the spread of fire through a penetration in a fire rated barrier made by an hvac duct or transfer. This could be years after their installation and initial testing. As a safety factor to achieve a given rating, the damper is tested at 400 fpm above the desired rating. Products cover a wide variety of applications ranging from life safety to maintaining the control of outside air. Hvac control dampers can be controlled to help stabilize system pressure and maintain it at comfortable and safe levels in whatever indoor environment you are trying to control.
Save money and buy at wholesale cost also quantity pricing. Since the publication of the first edition of this fire, smoke, and radiation damper installation guide for hvac systems, many changes have occurred in concepts of fire protection. Sleeves shall not extend beyond the fire barrier more than 6 152mm unless an actuator or factory installed access door is supplied, then the sleeve may extend up to 16 406mm. See dynamic fire damper selection procedures in this section. A sleeve may not be required if the damper frame is of sufficient size and shape so.
Fire dampers and hvac equipment supplier lloyd industries. Fire smoke damper installation fire smoke dampers must be installed so the leading edge of the closed blades are within the barrier it is intended. Although the primary purpose of a fire damper is to maintain the fire resistance of a fire separation, its inclusion in the hvac system. For installation in a horizontal duct, the damper blade shaft must be horizontal. A fire damper is an important part of commercial fire safety preventing the spread of flame and smoke but it can lead to a loss of airflow in a building when they close that can lead to a service call. Generally, a dynamic rated damper can be used in both static fans off. Fd damper installation, operating and maintenance instructions.
Certain ul approved designs do not require retaining angles. Joints of volume control dampers vcds, fire dampers and duct work shall be sealed with approved sealant. The hvac system is required to shut down automatically during fire emergencies. Hvac damper, fire damper, smoke damper, hvac damper control. Linkages from actuators should be adjusted to insure blades of damper fully open or close within the stroke or travel of the actuator arm. Life safety ruskin authority in air control, fire smoke.
The hvac system will continue to operate during the early. Uses the innovative openair electronic fusible link integrated for quick connect installation. Request pdf performance of fire damper and hvac duct with fds simulation in recent years, due to fast changing developments in metropolitan areas and. Choose from both rectangle and round configurations designed specifically for things like safety applications, lowleakage and heavy duty industrial needs, and backdraft for. Dampers for hvac are available in our partshvac online store. A complete line of damper products for fire and smoke control in life safety systems and for airflow control in commercial hvac and industrial systems. This configuration has the lowest pressure drop of the three test. Today, we offer a complete line of hvac dampers and air control products including volume control, balancing, round, zone, fire, smoke and combined models.
Dynamic fire dampers are located in vertical barriers, where the hvac system fan will stay on in the event of a fire. A fire damper that is listed and approved for use in duct systems where the hvac system blower will be cycled off. Observe damper motors and actuators through an operating cycle to check for defects or binding. Wozair has extensive experience designing and manufacturing costeffective, customisable fire dampers to handle hazardous environments.
Below are listed the ten metalfab fire damper model numbers and a brief description of each. They are used in hvac penetrations where a wall, floor, or ceiling is required to have both a fire damper and smoke damper. Hvac control dampers commercial control dampers are used in buildings to regulate the flow of air in an hvac system. Air dampers perfect for a wide variety of applications at johnson controls, we offer damper controls in a diverse range of models. Fd damper installation, operating and maintenance instructions 1 storage dampers received on site should be stored in a purpose made storage area, where they can be protected from moisture, dust and impact damage until required. Hse information sheet testing regime for offshore tr. A zone damper also known as a volume control damper or vcd is used specifically to control the flow of air in an hvac heating or cooling system. Fire resistance rating leakage class damper maximum size velocity fpm pressure in.