Buy Barber Coleman Damper Motor
On a boiler, the is an adjustable iron plate or shutter that’s built into the boiler flue as a tool to help regulate the flow of through it. The is comprised of blades or louvers to regulate the flow. Usually, s include an electro-mechanical device that opens and closes the to prevent heat from escaping the flue during the burner’s rest period. That control device is the . A basically stops or regulates the flow of inside a duct, chimney, VAV (variable volume) box, handler, or other handling equipment.
A may be used to cut off central conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature and climate control. A valve or plate can play the role of a . If heating or cooling is not required in a specific area where there is central conditioning, s could be used. Damper s can vary based on wattage, voltage, general size and return method, such as a spring return. Dampers also help to regulate temperature room-by-room and for climate control. Its operation can be manual or automatic.
Manual s are turned by a handle on the outside of a duct. Automatic s are used to regulate flow constantly and are operated by electric or pneumatic s, in turn controlled by a thermostat or building automation system.
Apart from being a top manufacturer of actuators, controllers and other types of controls, Barber Coleman Dampers are equally popular in industrial, commercial, or residential settings.
There are different types of s:
- Zone s
This (also known as a volume control or VCD) is used to control the flow of in an system. In order to improve efficiency and occupant comfort, systems are commonly divided up into multiple zones. For example, a building where the system is installed is divided into specific areas and each of these specific areas are assigned specific heating or cooling zones. Like in a house, the main floor may be served by one heating zone while the upsts bedrooms are served by another. In this way, the heat can be directed principally to the main floor during the day and principally to the bedrooms at night, allowing the unoccupied areas to cool down.
Zone s vary in type based on the specific area of use. Typical zone s in home systems are electrical in nature. For large commercial establishments, compressed or vacuum maybe be used instead of it being electrically driven. In either case, the is usually connected to the via a mechanical coupling.
For electrical zone s, there are two principal designs - one which uses a spring-return mechanism and a shaded-pole synchronous and another design where the is often a small shaded-pole synchronous combined with a rotary switch that can disconnect the at either open or closed positions or also known as the two stopping points (” open” or “ closed”). In this way, applying power to the “open ” terminal causes the to run until the is open while applying power at the “close ” terminal causes the to run until the is closed. For vacuum- or pneumatically-operated zone s, the thermostat usually switches the pressure or vacuum on or off, causing a spring-loaded rubber diaphragm to move and actuate the .
The electrically powered uses a spring-return mechanism and a shaded-pole synchronous . In this case, the is normally opened by the force of the spring but can be closed by the force of the . Removal of electrical power re-opens the . This style of is advantageous because it is “fail safe”; if the control to the fails, the opens and allows to flow. However, in most applications “fail safe” indicates the will close upon loss of power thus preventing the spread of smoke and fire to other areas. These s also may allow adjustment of the “closed” position so that they only obstruct, for example, 75% of the flow when closed.
Advanced s may also support positions other than fully open or fully closed and are usually capable of reporting their current position and, often, the temperature and volume of the flowing past the smart .
Regardless of the style of employed, the systems are often designed so that when no thermostat is calling for all s in the system are opened. This allows to continue to flow while the heat exchanger in a furnace cools down after a heating period completes.
- Fire s
These are called fire s because they are held open by fusible links. When heat is generated, the links break and the is closed by a spring. Fire s are usually fitted at junctions where ductwork passes through fire compartment walls / fire curtains as part of a fire control strategy. In normal circumstances, these s are held open by means of fusible links. When subjected to heat, these links fracture and allow the to close under the influence of the integral closing spring. The links are attached to the in such a way that the s can be released manually for testing purposes. The is provided with an access door in the adjacent ductworks for the purpose of inspection and resetting in the event of closure. In case the needs to be reset, there is an alternate access door specifically for this purpose or for inspection.
The replacement of a is quite easy, requiring only the removal of a setscrew that holds the to the . Replacement parts and kits are available at plus.
Barber Coleman is a key player in the controls market and manufactures top quality products that are accepted globally. They make a variety of other parts, such as valve parts, control boxes, control s, and thermostats. They also manufacture a large variety of sensors, indicators, valves, ignitors, s, thermocouples, alarms, and other parts and products for commercial, industrial and home use. Their products for the Heating Ventilating and Air Conditioning industry are well-known and respected in the world market