types of dampers in hvac

At Johnson Controls, we offer Damper Controls in a diverse range of models. Fire dampers are crucial passive fire protection products and are used in air conditioning, ventilation and heating systems. Each system brings unique benefits to HVAC applications. Types of dampers include fire dampers, smoke dampers, combination fire-smoke dampers, ceiling radiation dampers and corridor dampers. Control dampers can fully open or close the blades multiple times in a day to carry out the given task. 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. There are many different types of dampers that can be used to regulate the air distribution in your home. Another type of damper is viscoelastic dampers that stretch an elastomer in combination with metal parts. These are parallel and opposed blade dampers. Fire/smoke dampers are similar to fire dampers in fire resistance rating, and also prevent the spread of smoke inside the ducts. Parallel blade dampers are con-structed so all the blades move in the same direction and in parallel. 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. The functions of the two types of damper are outlined below. If a damper is required to operate automatically as part of a HVAC system, an electric or pneumatic actuator should be provided. 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. 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. 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. This is tutorial video regarding HVAC Dampers or Volume control dampers in English language. Volume air dampers control overall air flow as part of the building's heating and cooling system. It is another type of VCD that differs somewhat from the previous VCD shown above. Control dampers allow the airflow through the system and are installed at different points in the ductwork. They can also be used to redirect conditioned air out of closed-off rooms, which prevents wasted … On the other hand, louvers are used in places where protection from water infiltration is needed. Parallel blade damper are constructed so that all the blades are moved … Volume Control Dampers allows even distribution and flow control of air at high duct pressures and are suitable for various type of HVAC applications. 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. Below are 7 damper types used in hvac industry. With over 40 years of innovating . 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. As the thermostat is adjusted, the dampers automatically activate to increase or decrease air flow. In HVAC installations two different types of rectangular dampers are used to modulate air flow. Louvers may be adjustable, or suitable for applications that require noise control. 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. While many people are familiar with the process, they do not know that the airflow can be controlled manually. Parallel blade dampers are designed in a way so the blades move in the same parallel direction (similar to a window louver) when opened. In either situation, a mechanical coupling generally connects the engine to the damper. 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. The central HVAC systems can serve multiple and single zones and locate away from the building, which needs distribution devices. These devices are also used in air mixing zones to get hot and cold air. With the increased use of dynamic fire control systems, it was discovered that ordinary static type fire dampers would not always close if the HVAC system blower continued to run. Control Dampers. Sizes range from 4 inches to 16 inches. This classification depends on zone types and the location of HVAC equipment. This type of damper dissipates the building’s mechanical energy by converting it into heat. FAMCO sells high quality HVAC dampers for a variety of uses. 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. Will it be two-position, modulating, or some other type of control? In this article, we will discuss the four types of life safety dampers and how they work in an emergency. See Fig 2. 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. Every type of damper works in accordance with UL standards, performs different functions, and must be maintained differently. Answer added by magdy abd al nour, hvac site engineer , First United Co. 5 years ago . Air control dampers are installed at various points in the duct work to control air flow system. Dampers fall into five types, each with a specific function. In this video explained the Types of Volume dampers or HVAC dampers in detail. There are typically two different types of blade dampers used to modulate air flow: parallel and opposed blade dampers. In order to improve efficiency and occupant comfort, HVAC systems are commonly divided up into multiple zones. A. control actuators, Siemens is a recognized global leader in HVAC damper actuators. For example, in a house, the main floor may be served by one heating zone while the upstairs bedrooms are served by another. Levers located outside of air vents and ducts control damper plates or valves in a manual system. 1.) 1. If a damper does not close properly, the integrity of the fire barrier is compromised. This is HVAC … There are two basic types of duct damper models, and each is chosen based on the application. Today, we offer a complete line of HVAC dampers and air control products including volume control, balancing, round, zone, fire, smoke and combined models. Types & definitions of HVAC duct & flue dampers, vibration dampeners, and fire dampers found in buildings. FAMCO provides a variety of different dampers to help suit whatever your needs may be. 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. How much are HVAC dampers? smoke damper : normally closed installed with smoke fans - in case of fire it open by the smoke heat. Where your HVAC system penetrates fire and smoke barriers, dampers are installed to sustain the integrity of the barrier ratings. Some industrial dampers are designed for pressure relief, or recommended for use within specific HVAC systems. Manual dampers are turned by a handle on the outside of a duct. In addition, they can be used as a positive shutoff or for automatic control. Damper Types. (journal,2006) . The High-temperature damper operates continuously at 300°c for up to 2 hours. There are two major … A zone damper is a specific type of damper used to control the flow of air in a heating, ventilation, air conditioning system. Several factors such as ambient temperature and the loading frequency affect the performance and consequently the effectiveness of the damper system. 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. 2: Viscoelastic Damper. 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. Fig. 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. Opposed blade dampers have the blades moving in opposing directions. 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. Its operation can be manual or automatic. Most manual dampers have a straightforward design that allows operators to intuitively control airflow through the system, and they tend to be … Like dampers, louvers are usually made of aluminum or steel. Manual Dampers. They also can be sub-classified into all-air HVAC systems, air-water systems, all-water … Having this ability allows people to control the amount of air that enters their home or business. All our intumescent fire dampers and smoke dampers are designed for application in ventilating systems and air conditioning systems where the … Type of HVAC systems can be divided into central HVAC systems and local HVAC systems. FIRE DAMPERS Fire dampers are used to restrict the spread of fire where ducts and air transfer openings penetrate… read more Dampers. Types of Dampers in HVAC. Fire Dampers 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. What type of control action will the damper perform? There are two common types of HVAC dampers: manual and automatic. 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. Kele offers the following types of commercial volume control dampers: it is designed to close automatically on the detection of heat. 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. In case of fire, the fire and gas dampers will close automatically, preventing additional oxygen to enter the space to fuel and spread a fire. The types of dampers in HVAC vary depending on their location, the ducting structure, and the damper’s purpose. Types of Dampers Dampers are classified based on their performance of friction, metal (flowing), viscous, viscoelastic; shape memory alloys (SMA) and mass dampers. 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. Zone dampers are generally driven electrically as used in home HVAC systems. Vacuum or compressed air can be used instead in big business facilities. 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. Commercial control dampers regulate the flow of air in the same manner as manual balancing dampers. Dampers for HVAC Purposes. Different types of Dampers and Louvers. Their functions vary depending on the damper type. 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