Usually there is one terminal unit per thermal zone. Product Range: Fire Dampers, Motorized Fire & Smoke Dampers and BS 476 Standards Fire Rated Ducts. PVC low-profile ducting has been developed as a cost-effective alternative to steel low-profile ducting. The position of the U.S. Environmental Protection Agency (EPA) is that "If no one in your household suffers from allergies or unexplained symptoms or illnesses and if, after a visual inspection of the inside of the ducts, you see no indication that your air ducts are contaminated with large deposits of dust or mold (no musty odor or visible mold growth), having your air ducts cleaned is probably unnecessary. Vertically mounted fire dampers are gravity operated, while horizontal fire dampers are spring powered. Exilon Industries. Number one is the heating and cooling load calculation using a protocol like ACCA's Manual J or the ASHRAE Handbook of Fundamentals. Unclean air conditioning duct work can pose a safety risk as well as affect the air quality in a building. This will usually have an inner perforated liner, then a 1–2" layer of fiberglass insulation contained inside an outer solid pipe. Designing a duct system is important but there are a few critical steps that come first. As such, air ducts are one method of ensuring acceptable indoor air quality as well as thermal comfort. In order to cater the variegated demands of our precious clients, we are offering a wide range of Air Conditioning Ducting System. Some flexible duct markets prefer to avoid using flexible duct on the return air portions of HVAC systems, however flexible duct can tolerate moderate negative pressures. is a locally owned heating and air conditioning provider in Seguin, TX. Traditional air conditioning, ventilation and extract systems will develop a build-up of dirt, debris and grease. ", "ACR, The NADCA Standard for Assessment Cleaning Restoration of HVAC Systems", "Standard 180 Standard Practice for Inspection and Maintenance of Commercial Building HVAC Systems", "Verifying System Cleanliness: A Guide for Commissioning Providers", Heating, ventilation, and air conditioning, High efficiency glandless circulating pump, https://en.wikipedia.org/w/index.php?title=Duct_(flow)&oldid=1001611893, Wikipedia articles needing clarification from July 2014, Articles needing additional references from July 2009, All articles needing additional references, Creative Commons Attribution-ShareAlike License. A demonstration on how to use the Daikin controller and the Advantage Air controller is provided to the owner. However, as it often replaces hard ductwork, it is easy to perceive it simply as a duct. ISO – heat-insulated; SONO – sound-insulated. Consider your equipment type and supporting systems. Flexible aluminium foil heat-insulated air ducts. There is a musty or stale odor when turning on the furnace or air conditioner. Sweeping and dusting the furniture needs to be done more than usual. The growth of low-profile ducting has grown significantly due to the reduction of available space in ceiling cavities in an effort to reduce cost. We are ranked amongst the renowned organizations that are engaged in providing the best quality range of HVAC Duct. We are committed to excellence in every aspect of the heating and air conditioning … The duct board can then be folded along the groove to produce 90° folds, making the rectangular duct shape in the fabricator's desired size. The knife automatically trims out a groove with 45° sides which does not quite penetrate the entire depth of the duct board, thus providing a thin section acting as a hinge. Its products are UL classified and approved by Dubai & Abu Dhabi Civil Defence. The ductwork construction starts with the tracing of the duct outline onto the aluminium preinsulated panel. For ease of handling, it most often comes in 4' sections (or joints). Flexible non-insulated air ducts with steel wire frame covered with metalized polyester film. When the system is designed with a main duct branching into many subsidiary branch ducts, fittings called take-offs allow a small portion of the flow in the main duct to be diverted into each branch duct. For supply, diffusers are most common, but grilles, and for very small HVAC systems (such as in residences) registers are also used widely. Round versions are called spin-in fittings. Categorised in: air conditioning ducting system The blowers in the air handler can create substantial vibration, and the large area of the duct system would transmit this noise and vibration to the inhabitants of the building. A … In order to meet various demands of our esteemed clients, we are engaged in providing an optimum quality array of Exhaust Duct. Most manufacturers of rigid polyurethane or phenolic foam panels use pentane as foaming agent instead of the aforementioned gasses. To avoid this, vibration isolators (flexible sections) are normally inserted into the duct immediately before and after the air handler. Inspections are typically visual, looking for water damage or biological growth. Porous material also tends to require less maintenance as it repels dust and other airborne contaminants. They must be carefully planned in ventilation design.[why?]. At the far end of the main duct the air is divided into two branches through a gentle, curved tee section. Insulated fiber glass duct liner and duct board can be cleaned with special non-metallic bristles. These differences can become even more disparate depending on where they’re installed. After or during sleep, occupants experience headaches, nasal congestion, or other sinus problems. This allows the air to smoothly change direction and thus there is no sudden increase in static pressure and the air flow rate to the rooms has dramatically increased. Air pressure combined with air duct leakage can lead to a loss of energy in a HVAC system. This is actually an air distribution device and is not intended as a conduit for conditioned air. This page was last edited on 20 January 2021, at 13:43. A wide variety of air conditioning ducting options are available to you, such as others, graphic design, and … fatigue, headache, sneezing, stuffy or running nose, irritability, nausea, dry or burning sensation in eyes, nose and throat. Fabric ducts are not rated for use in ceilings or concealed attic spaces. Duct cleaning may be personally justifiable for that very reason: occupants may not want to have their house air circulated through a duct passage that is not as clean as the rest of the house. Both polyurethane and phenolic foam panels are manufactured with factory applied aluminium facings on both sides. The ducted air conditioning system is a versatile and well used residential / commercial air conditioning system. Air Conditioning Ducting We hold expertise in manufacturing and supplying wide range of Duct that includes MS Duct, Air Conditioning Duct, GI Duct and different others. Ducting systems must often provide a method of adjusting the volume of air flow to various parts of the system. The ducted air conditioning system can be concealed in a false / suspended ceiling or on the ground. Fabric ducts are available in various colours, with options for silk screening or other forms of decoration, or in porous (air-permeable) and non-porous fabric. For more information on Activair air conditioning ducting. We have an experienced team of duct work designers & installers, offering high quality installation and fabrication services for many residential, commercial and industrial air conditioning systems. Tradeflex. The duct is then closed with outward-clinching staples and special aluminum or similar metal-backed tape. to provide efficient cold air distribution for more information see: Designing an inflatable duct system Installing Activair air ducts Polythene ducting sizes and quotations Today, a sheet metal fabrication shop would commonly fabricate the galvanized steel duct and insulate with duct wrap prior to installation. The vanes guide the air so it can follow the change of direction more easily. A protective layer surrounds the insulation, and is usually composed of polyethylene or metalised PET. A probe connected to the motor is installed in the run of the duct and detects smoke, either in the air which has been extracted from or is being supplied to a room, or elsewhere within the run of the duct. Traditionally, air ductwork is made of sheet metal which was installed first and then lagged with insulation. KAD Air Conditioning serves its long list of customers with advanced technology and modern equipments. These dampers may be manual or automatic. [5][6][7] When visual inspection needs to be validated numerically, a vacuum test (VT) or deposit thickness test (DTT) can be performed. However, ductwork manufactured from rigid insulation panels does not need any further insulation and can be installed in a single step. A damper may be 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. With the valuable assistance of skilled team of professionals, we are engaged in offering an extensive range of high quality HVAC Ducting System. Our company is counted among the well known Manufacturer, Exporter, Trader and Supplier in the market, involved in offering premium quality Air Conditioning Ducting System.This system is installed in a new home or custom-made to suit an existing one, and once installed, only the controller, the return air and discharge grilles are visible inside your home. It can be installed in a new home or tailored to suit an existing one, and once installed, only the controller, the return air and discharge grilles are visible inside your home. Utility bills in winter and summer months above average relative to rate fluctuation, Spaces or rooms that are difficult to heat or cool. KAD Air Conditioning is specialized in Ducting and one of the recognized air conditioning companies in Dubai, UAE. Daikin is the most trusted name in air conditioning with energy efficient solutions for residential and commercial applications. elbows, tapers) and finally assembled with glue. We comply in all respects with: SABS 1238 – 1979 “Standard Specification for Air Conditioning Ductwork” SABS 0173 – 1980 “Code of Practice for Installation, Testing and Balancing of Air Conditioning Ductwork” There are also 5' joints of the non-spiral type pipe available, which is commonly used in residential applications. A variety of flanges are available to suit various installation requirements. Smoke dampers are driven by a motor, referred to as an actuator. You've got to know how much heating and cooling you need for each room (in BTU/hr). Most units are now powered by inverter driven compressors and come in high power output from 3.5 Kw to 20 Kw. Ducts commonly also deliver ventilation air as part of the supply air. A thorough duct cleaning done by a professional duct cleaner will remove dust, cobwebs, debris, pet hair, rodent hair and droppings, paper clips, calcium deposits, children's toys, and whatever else might collect inside. We are ranked amongst the trusted firms engaged in providing a wide range of Ventilation Duct. The duct board is formed by sliding a specially-designed knife along the board using a straightedge as a guide. Reverse cycle ducted air conditioning systems can cool and heat your whole home , or add zoning and you can heat and cool certain areas. Kinks in flexible ducting must be avoided. What’s The Cost? A rigid phenolic insulation ductwork system is listed as a class 1[clarification needed] air duct to UL 181 Standard for Safety. Tags: air conditioning ducting system. A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. Besides the ducts themselves, complete ducting systems contain many other components. Ducts are conduits or passages used in heating, ventilation, and air conditioning (HVAC) to deliver and remove air. 10,452 air conditioning ducting products are offered for sale by suppliers on Alibaba.com, of which hvac systems & parts accounts for 40%, air conditioner parts accounts for 3%. less than 15 feet or so, and try to minimize turns. There are many types of ductwork available and often times the ductwork can make a big difference in your utility bills. Flexible Ductwork Flexible ducts are typically tube-shaped, made of a wire coil covered with a bendable, durable plastic, and surrounded by insulation. Flexible non-insulated aluminium foil air ducts with steel wire frame. Ducts are conduits or passages used in heating, ventilation, and air conditioning (HVAC) to deliver and remove air. Before sealing ducts it is imperative to ensure the total external static pressure of the duct work, and if equipment will fall within the equipment manufacturer's specifications. Zone dampers provide automatic control in simple systems while variable air volume (VAV) allows control in sophisticated systems. ✓Thank youThanks for sharing your contact infoWe will get back shortly, Surajpur, Greater Noida, Gautam Budh Nagar, Uttar Pradesh. Ducted and split system air conditioning systems have a number of obvious and not so obvious differences. It can also be treated with an anti-microbial agent to inhibit bacterial growth. we are the manufcturer of square duct.we are also the leading supplier in NCR region. Air terminals are the supply air outlets and return or exhaust air inlets. Terminal units may also include a heating or cooling coil. Vapor cycle air conditioning systems are often used on reciprocating aircraft. Being one of the reputed organizations in the market we are engaged in offering an exclusive range of Exhaust Ducting. [1] Ducts commonly also deliver ventilation air as part of the supply air. [7] A Hong Kong standard lists surface deposit limits of 1g/m2 for supply and return ducts and 6g/m2 for exhaust ducts, or a maximum deposit thickness of 60 µm in supply and return ducts, and 180 µm for exhaust ducts. It is commonly attached with long zip ties or metal band claps. These vertical ducts are called stacks and are formed with either very wide and relatively thin rectangular sections or oval sections. We also offer professional ducting design and consultation services. Replacing duct systems is a labor-intensive job under the worst working conditions. As such, air ducts are one method of ensuring acceptable indoor air quality as well as thermal comfort. When necessary, a double walled duct is used. Fiberglass duct board panels provide built-in thermal insulation and the interior surface absorbs [sound], helping to provide quiet operation of the HVAC system. The same flexible section can reduce the noise that can occur when the blower engages and positive air pressure is introduced to the ductwork. In the United States, the insulation is usually glass wool, but other markets such as Australia, use both polyester fibre and glass wool for thermal insulation. Ducted air conditioning systems are the first choice for air conditioning when aesthetics are the main priority. This kind of ducting is best in tricky spaces where rigid ducts are just not possible to install, or used to attach non-flexible ductwork … The systems of ducts known as ductwork, are the central component of a building’s heating, ventilation and air conditioning (HVAC) system. 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And positive air pressure is introduced to the rigid ductwork Motorized fire & smoke dampers, fire... For example, supply air outlets to the ductwork is outfitted with advanced and. Vibration isolators ( flexible sections ) are typically made of flexible plastic a! Usually composed of polyethylene or metalised PET fabricated in the shop or site! Technology and modern equipments compressed into a 5 ' length short, e.g turning. Air terminals are the central unit to the owner duct with less other! The renowned organizations that are engaged in providing a wide range of air con below, extraction,! Single-Zone constant air volume ( VAV ) allows air conditioning ducting system in sophisticated systems smoke and fire can.