At Johnson Controls, we offer Damper Controls in a diverse range of models. Every type of damper works in accordance with UL standards, performs different functions, and must be maintained differently. What type of control action will the damper perform? This article defines and describes barometric dampers, draft regulators, automatic flue dampers, draft inducers, zone dampers, HVAC supply register controls, fire dampers, automatic fire and smoke dampers, fireplace dampers, and fresh air inlet dampers and controls. In general a fire damper works when heat from a fire causes the normal temperature of a room to rise to approximately 165 degrees Fahrenheit i.e. Control dampers allow the airflow through the system and are installed at different points in the ductwork. Volume air dampers control overall air flow as part of the building's heating and cooling system. There are two major … Control dampers can fully open or close the blades multiple times in a day to carry out the given task. With over 40 years of innovating . There are motorized dampers, backdraft dampers, pressure relief dampers and make-up air.Each has its benefits and no matter what your needs are there is one that is perfect for your situation. A. In either situation, a mechanical coupling generally connects the engine to the damper. To correctly control the spread of smoke through the HVAC system, the specifier should create a design using Fire Dampers and Smoke Control Dampers in the correct location. In this article, we will discuss the four types of life safety dampers and how they work in an emergency. Dampers fall into five types, each with a specific function. This is HVAC … Choose from both rectangle and round configurations designed specifically for things like safety applications, low-leakage and heavy duty industrial needs, and backdraft for pressure relief. A zone damper (also known as a Volume Control Damper or VCD) is a specific type of damper used to control the flow of air in an HVAC heating or cooling system. Dampers for HVAC Purposes. As the thermostat is adjusted, the dampers automatically activate to increase or decrease air flow. FIRE DAMPERS Fire dampers are used to restrict the spread of fire where ducts and air transfer openings penetrate… read more motorized damper : when you connect smoke fan to AHU duct(one on the fan duct normally close and one on the AHU duct normally open) -the2 dampers work by signal from the fire alarm system. In order to improve efficiency and occupant comfort, HVAC systems are commonly divided up into multiple zones. The central HVAC systems can serve multiple and single zones and locate away from the building, which needs distribution devices. Louvers may be adjustable, or suitable for applications that require noise control. Johnson Controls is committed to customer satisfaction, and that’s why we custom-build each of our HVAC dampers to suit your specific size and model requirements. FAMCO provides a variety of different dampers to help suit whatever your needs may be. Control Dampers. The types of dampers in HVAC vary depending on their location, the ducting structure, and the damper’s purpose. Fire/smoke dampers are similar to fire dampers in fire resistance rating, and also prevent the spread of smoke inside the ducts. A heating and air conditioning system is designed to produce hot and cold air and force it into a building structure, such as a home or commercial facility. Commercial control dampers regulate the flow of air in the same manner as manual balancing dampers. These devices are also used in air mixing zones to get hot and cold air. Several factors such as ambient temperature and the loading frequency affect the performance and consequently the effectiveness of the damper system. The various types of industrial dampers are used to fulfill different requirements and service conditions – and so, one style simply can’t fulfill all industrial application needs. Below are 7 damper types used in hvac industry. control actuators, Siemens is a recognized global leader in HVAC damper actuators. Manual dampers are turned by a handle on the outside of a duct. (journal,2006) . Sizes range from 4 inches to 16 inches. Some industrial dampers are designed for pressure relief, or recommended for use within specific HVAC systems. Different types of Dampers and Louvers. This classification depends on zone types and the location of HVAC equipment. smoke damper : normally closed installed with smoke fans - in case of fire it open by the smoke heat. While many people are familiar with the process, they do not know that the airflow can be controlled manually. Among the advantages of using dampers we can infer to high energy absorbance, easy to install and replace them as well as coordination to other structure members. Each damper type will perform a particular function in a complete PFP system, but their purpose is the same: to give people time to evacuate the building. Damper Types. The functions of the two types of damper are outlined below. Its operation can be manual or automatic. The High-temperature damper operates continuously at 300°c for up to 2 hours. Having this ability allows people to control the amount of air that enters their home or business. A damper is sometimes used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature and climate control. Parallel blade damper are constructed so that all the blades are moved … 1. Our smoke dampers are used to manage smoke only, whilst our intumescent fire smoke dampers also manage fire and are designed to close when the temperature reaches 74°c. Fire Dampers If a damper does not close properly, the integrity of the fire barrier is compromised. Dampers. Types of Dampers in HVAC. 2: Viscoelastic Damper. A zone damper is a specific type of damper used to control the flow of air in a heating, ventilation, air conditioning system. Volume Control Dampers allows even distribution and flow control of air at high duct pressures and are suitable for various type of HVAC applications. Another type of damper is viscoelastic dampers that stretch an elastomer in combination with metal parts. Opposed blade dampers have the blades moving in opposing directions. There are many different types of dampers that can be used to regulate the air distribution in your home. Fig. Types of dampers include fire dampers, smoke dampers, combination fire-smoke dampers, ceiling radiation dampers and corridor dampers. Their functions vary depending on the damper type. Each system brings unique benefits to HVAC applications. Kele offers the following types of commercial volume control dampers: Fire dampers are crucial passive fire protection products and are used in air conditioning, ventilation and heating systems. Slip and Clip Type Volume Control Damper. At Flextech Industries, they manufacture and supply a wide range of damper types to companies all over North America. For example, in a house, the main floor may be served by one heating zone while the upstairs bedrooms are served by another. This is tutorial video regarding HVAC Dampers or Volume control dampers in English language. Selecting the Common damper types right actuator and applications The right damper actuator for any HVAC application Our OpenAir™ series provides more torque sizes to meet all of your needs. 1.) There are typically two different types of blade dampers used to modulate air flow: parallel and opposed blade dampers. How much are HVAC dampers? Answer added by magdy abd al nour, hvac site engineer , First United Co. 5 years ago . Where your HVAC system penetrates fire and smoke barriers, dampers are installed to sustain the integrity of the barrier ratings. FAMCO sells high quality HVAC dampers for a variety of uses. All our intumescent fire dampers and smoke dampers are designed for application in ventilating systems and air conditioning systems where the … There are two common types of HVAC dampers: manual and automatic. Air control dampers are installed at various points in the duct work to control air flow system. Parallel blade dampers are con-structed so all the blades move in the same direction and in parallel. Volume control dampers are offered with either parallel or opposed blade operation and each style has distinguishing characteristics with regard to the type of operation. Nov 22, 2019 - Know the different types of dampers and uses in HVAC system. 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. When an application needs air shutoff, both the support of damper and louver is required as louvers are equipped with fixed blades that are unable to close. There are two basic types of duct damper models, and each is chosen based on the application. See Fig 2. In this video explained the Types of Volume dampers or HVAC dampers in detail. In addition, they can be used as a positive shutoff or for automatic control. In HVAC installations two different types of rectangular dampers are used to modulate air flow. This type of damper dissipates the building’s mechanical energy by converting it into heat. Parallel blade dampers are designed in a way so the blades move in the same parallel direction (similar to a window louver) when opened. Vacuum or compressed air can be used instead in big business facilities. Like dampers, louvers are usually made of aluminum or steel. Marine fire dampers are used in air conditioning and ventilation ductwork onboard yachts, merchant ships, navy vessels and offshore rigs to prevent the spread of fire, smoke and gas inside the ductwork. Levers located outside of air vents and ducts control damper plates or valves in a manual system. They also can be sub-classified into all-air HVAC systems, air-water systems, all-water … Manual Dampers. Zone dampers are generally driven electrically as used in home HVAC systems. The prices vary by damper type, so we will outline a few here to paint a better picture: Motorized damper: Our motorized dampers start at $115.01 for a 4 inch 24 volt damper with no end switch. Types of dampers in hvac has been spread to many different nations, which refers that purchasers are not just from domestic areas but also from foreign nations. Will it be two-position, modulating, or some other type of control? If a damper is required to operate automatically as part of a HVAC system, an electric or pneumatic actuator should be provided. On the other hand, louvers are used in places where protection from water infiltration is needed. Most manual dampers have a straightforward design that allows operators to intuitively control airflow through the system, and they tend to be … It is another type of VCD that differs somewhat from the previous VCD shown above. Types & definitions of HVAC duct & flue dampers, vibration dampeners, and fire dampers found in buildings. 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