Use as main trunk line for distribution of supply and return air to branch lines throughout a forced-air system. Flanged Ducting YES! We Have Flanged Duct. If installing a damper which works on. com is the leading internet supplier of Duct and System Air Dampers, Duct Fans, Duct Installed Products and Duct Fabrication Products. Simply zip screw the damper shell in-line with the intake ductwork. "OmniDuct duct has been a big part of our growth over the last couple years, they have very competitive pricing and great customer service with a can do attitude which is important to us as a customer. KOM 150 U round back valve is especially designed to prevent back-draft. rectangular duct and fittings are one part of our complete line of HVAC products. duct by simply cutting a 2 to 3 inch slot on the side of the duct and inserting the damper. Back to top. For modulating control, the engineer must choose sizes that create enough velocity. The material and labor cost is significantly reduced when wye fittings are used to split ductwork. To install Damper Sleeves, you simply slide the sleeve into the item you are attaching to and fasted with sheet metal screws and conceal seam with duct tape. The square/rectangular by-pass damper has a 5” wide end plate to cover over the opening. We offer a wide variety of shapes, sizes, materials and finishes. 3¼” x 10” RECTANGULAR DUCT WALL CAP INSTALLATION INSTRUCTIONS 3¼” x 10” RECTANGULAR DUCT WALL CAP INSTALLATION INSTRUCTIONS Plan installation carefully. If dampers are provided with link tabs instead of wire clips, install link and bend tabs to. standard 3¼" x 10" rectangular duct. We carry a great selection on all ducting products. Bend in duct too close to fan discharge 4. can provide a second source of airflow to the basement or supply of the existing HVAC system with a backdraft damper. Damper not working properly or damaged 3. Damper Application Engineering Report 3 The damper blades are closing which tends to reduce the flow, but the differential pressure across the damper is increasing which tends to increase flow. Take out the damper/duct connector and set it aside (to prevent damage during shipping, the connector is screwed to the inside of the hood). • IMPORTANT – Save these instructions for local inspector’s use. Continental Fan Manufacturing Spring Retrurn Butterfly Backdraft Dampers are used with Continental Fan AXC and EXT series exhaust fans or in most common applications where a Backdraft Damper is needed to reduce the amount of airflow from the HVAC unit when not in use. Starting Collars & Take-Off's: Used for transition at a 45° angle from the top of rectangular duct to round pipe or insulated flexible duct. Use the dampers at the grills in the living space, but never damper down more than half way. It has a 24-volt motor used to control circulating air in HVAC systems and used when a normally-open damper is required. Installation Tip — To install HVAC Damper Sleeves, you simply slide the sleeve into the item you are attaching to and fasted with sheet metal screws or duct tape. These holes should line up with the predrilled holes on the damper. HVAC Express vents, dampers and ducting accessories are made in the USA and include Manual Duct Damper - Spool Damper -10 Inch (GSD 10). 25" x 10" metal duct to clear a ceiling joist. While reducing objectionable fan noise, duct sound attenuators can also reduce cross-talk transmitted from one space to another through the ducts to insure office privacy. The duct work is made of pieces of sheet metal that are either round or rectangular. Attach the bypass damper between the two start collars, effectively connecting the return duct to the supply duct. I was really looking for something to almost shut off the flow and with the large gap this didn't do it. Snappy is the nation's leading supplier of galvanized pipe & fittings for the residential HVAC Industry. Fill the gap with some sort of a frame made out of (circle one): metal, foam, wood. We will ensure that we have the proper damper specifications to meet your needs. They are perfect fittings for maintaining a professional look, especially if your duct system is exposed. A Damper may be used to cut-off airflow to an unused room or to regulate conditioned air for room-to-room temperature and climate control. Dampers are shipped about 1/8 inch undersized in each dimension to insure they will fit in a standard size rectangular duct. OEM quality damper is sold nationwide under a major HVAC manufacturer's name and is our most popular rectangular damper. Damper can be installed in any orientation (mounting side can be on either the bottom or the side of the duct). Find quality hvac duct & fittings online or in store. Guide to Zone Dampers for Heating & Cooling Air Duct Controls How to install & use manual or automatic HVAC zone dampers. Remove the fasteners from the damper, connect the damper through these holes into your new holes, and tighten. A low profile duct system for restricted ceiling spaces PACK Low profile modular design Quick and easy to install BCA compliant modular design Quick and easy to install BCA compliant The FlatPack System is ideal for buildings such as apartments and hotels that have been designed with low ceiling heights. HVAC Ductwork & Fittings Rectangular Duct, Spiral Duct, Double Wall Spiral , PCD ZEN works with you on your schedule No matter how big or small your project, ZEN can provide all or part of your HVAC needs. NOTE: If you need to install ducts, note that the total duct. Rectangular fire damper for the isolation of duct penetrations between fire compartments, for a variety of installation situations, available in many different sizes and constructions. Installing the Damper IMPORTANT — Install dampers into a squared air duct. Instead of using a thermostat to control the comfort level in each zone, the user can open or close specific dampers with a wireless remote control. See pages 11-14 for rough-in dimensions. When they are wide open, the pressure drop is the same for both types. Rectangular Duct Assembly Rectangular duct is manufactured in “L” shaped pieces which are connected using a snaplock system. Install in Any Orientation Without Sealants or Solvents. Depending on how close you are to the fans of the air conditioning system, you can hear the sounds of the fan pushing the air through the ducts. What you are asking for is also known as a electrically actuated butterfly valve for air. Install duct accessories according to applicable details in SMACNA's "HVAC Duct Construction Standards Metal and Flexible" for metal ducts and in NAIMA- AH116, "Fibrous Glass Duct Construction Standards," for fibrous-glass ducts. Peter to Fig. The smallest sizes of round dampers have a butterfly type blade while larger ones might be multiblade. Safe-Air Dowco's installation notes are applicable to fire dampers, smoke dampers and combination dampers on most occasions. If you wish to put the damper on the upstairs line, then you will need to put the damper at the beginning of the duct. Firestopping non-dampered heating, ventilation, and air-conditioning (HVAC) duct penetrations in fire-rated walls is more involved than installing that ubiquitous red caulk into the space between the duct and the periphery of the opening. No Air Leaks! Motors have permanently lubricated bearings. duct should be installed in accordance with SMACNA guidelines. Air seal and tape joints. Install elbows to each end of a bypass damper. Our factories and equipment rely on the most modern technology to ensure consistent product superiority. Requiring only about $5 per year to operate, the RB-Series includes power cord and built-in on/off switch. We will ensure that we have the proper damper specifications to meet your needs. For example, ZD10x8 is a 10 in. TrueZONE Rectangular Parallel Blade Damper - Overview The ZD is a power close and spring open damper. NOTE: If you need to install ducts, note that the total duct length of 31⁄ 4″x 10″rectangular or 6″diameter round duct. Steel Opposed Blade Damper. 12" x 8" Rectangular Duct Volume Damper. EWCESTORE is the premier online destination for HVAC contractors, maintenance shops, and DIY customers throughout the United States and other countries around the globe who want nothing less than the best value for their money on all their HVAC damper motor, wireless HVAC zone control system, forced air zoning products, and other related needs. 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. Various relief air control settings are easily accomplished by a simple adjustment of an integral weighted control lever. -All dampers are 24 volts ac operated unless 110 volts ac is specified. Questions & answers about how to find, adjust, & use automatic or manual HVAC air duct control s or zone dampers in heating & A/C ducts in order to balance heated or cooled air flow in buildings. Step 4: Install top vent plate and rear damper - Re-install the plate removed in step 2 to block top venting hole o Put plate in position and put in 4 screws from step 2 (see Pic 10); - Install rectangular air damper outlet on the rear vent location (see Pic 11) - Connect duct work to damper;. Rectangular duct and fittings to be fabricated in accordance with 2005 SMACNA "HVAC Duct Construction Standards, Metal and Flexible. There are many ways of reducing noise through the duct work, but the easiest and most effective method without restricting airflow is installing an in-line noise muffler. TAMCO manufactures high-end, superior-quality dampers and air control products, serving commercial, industrial and institutional markets. As a result the Ravenscroft fire damper is considerably quicker to install than other dampers in the market. Install ST series Round, Rectangular or D-FUSER Damper into the supply air duct. Holly & Audubon, NJ. Damper Round Rectangular Zone Spring-open/ four screws for duct or drywall/plaster installations. Below are listed the ten Metal-Fab fire damper model numbers and a brief description of each. job done than any other duct manufacturer and the ability to form round, rectangular, or oval duct, Fab-Tech can meet any of your corrosive fume exhaust and odor control duct requirements. more expensive to install. All dampers have a housing made of 4 aluminium profiles and a closure consisting of aluminium. 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. When a damper motor malfunctions or fails, AC damper doors get stuck since no signal or motor operation exists. Unit 1 - Cylinder with Damper, Square & Rectangular Duct Duration - 21 Hours Learning Outcome: By the end of this unit each apprentice will be able to: Read and interpret HVAC drawings Sketch ductwork Use the lockform machine Produce and fabricate a cylinder with slip joint (big end and small end) and. Add to Cart. com FREE DELIVERY possible on eligible purchases. installation instructions for fire dampers. Corrosion resistant galvanised steel, with blades outside airstream. Where ductwork is not located in a rated shaft and it penetrates multiple non-rated floors, close off space between duct and adjacent work with appropriate fire-rated sealant, insulation, putty, or compound. We offer a large selection with great prices on all range hoods products. Next, you would bend every other tab on the start collar out 90 degrees. It is constructed of high-quality steel with a brown powder coat removable control knob and plastic key to open and close the damper. Use the graphic as a guide when planning or designing a Zone system regardless of the Equipment type, Duct layout and Airflow configuration. Install in Round, Square or Rectangular Duct. If a round duct is required, a rectangular-to-round transition adaptor must be used. Looking for DAYTON Rectangular Fire Damper, Static, Vertical (2TGA5)? Grainger's got your back. DUCT PIECES EQUIVALENT LENGTH x NUMBER USED = EQUIVALENT LENGTH Roof Cap 24 Ft. How can I fix this? It looks like gaskets are produced for rectangular blade dampers, but not for round dampers. These modern low-cost units are easy to install, permit circulation of air in either direction, yet effectively stop noise in both directions. The Series STRA Airflow Measurement Station is easy to install -- simply connect the tubing to the station fittings, then to a differential pressure manometer, gage, transmitter or switch. EB Air Rectangular Dampers are designed for commercial applications with power open, power close three wire Belimo/ Neptronic actuator on our opposed multi blade aluminum damper offers superior life and outstanding performance. One solution is place one or more rectangular or round duct silencers between the fan and the occupied spaces. Rectangular Parallel Blade Damper - Overview The ZD is a power close and spring open damper. — Do not weld dampers to the air ducts. Rectangular Duct Hangers Minimum Size. The ZD is typically used with the TrueZONE systems and other electronic zoning systems. Industrial Combustion Training. RE DAMP LISTING NO. Several other major zoning companies are in business due to ZONEFIRST. Most of the backdraft dampers available on the market are easy to install. do not install damper out of square or out of flat install damper in plane of fire separation. Next, you would bend. Order DAYTON Rectangular Balancing Damper, 12x8, 22CV83 at Zoro. (SMC) TDC, Slip/Drive and Raw Sheet Metal Connectors, Inc. Elbows, Transitions, Wall and Roof Caps, Etc. The next step is to install your ducting. End Caps from The Duct Shop are the perfect fitting to use when you terminate a duct run. Multiple section damper assemblies may require brac - ing to support the weight of the assembly and to hold against sys - tem pressure. To get the same result past 25 ft. DSEP -Rectangular Dampers OTHER REFERENCES SmartZone System Manual SmartZone-2X, 4X/8X Install Guides SmartZonePLUS Install Guide SPC Specification Sheet References available at ecojay. Then, seal both sides with duct tape. The flange also has pre-punched holes for easy installation. This configuration has a lower pressure drop than Figure 5. Use the graphic as a guide when planning or designing a Zone system regardless of the Equipment type, Duct layout and Airflow configuration. INSTALLING AUTOMATIC OPPOSED BLADE DAMPERS (AOBD), SEE FIG. CZRD CZRD Series (patented design) • Eliminates the need for a bypass damper, cutting system costs while requiring less space and labor. Blades Damper blade design varies among manufacturers. This damper is easy to install and easy to checkout. The ZD is a power close and spring open damper. Do not bend or deform clips after assembly. 6 inch duct would normally be sufficient for a 12 x 15 room, but due to the long duct length install a duct booster fan or use 8 inch duct without a booster fan. It may also be used in combination with our 927 and 1200 right angle controls on. If single-point electronic velocity sensor is used, 3 to 5 inlet duct diameters of straight duct should be provided at the. Damper blade 126 is generally planar in shape, so that its thickness is significantly less than its height and width or diameter. 0 DUCT CONSTRUCTION Ductwork and supports shall conform to the HVAC Duct Construction Standards, Metal, and Flexible, Second Edition, 1995. We had to make an offset duct piece from 3. Questions & answers about how to find, adjust, & use automatic or manual HVAC air duct control s or zone dampers in heating & A/C ducts in order to balance heated or cooled air flow in buildings. Nailor 1500 Series Heavy Duty Control Dampers feature heavy duty galvanized steel U-channel frames, adjustable face linkage, and stainless steel pivot pins which results in smooth operation and easy maintenance. OEM quality damper is sold nationwide under a major HVAC manufacturer's name and is our most popular rectangular damper. Product Code Photo Specs Product Description Packed Case Pack CS. Sheet Metal Connectors, Inc. Make sure that birdscreen does not interfere with movement of damper flap. com or by calling toll free 888-523-ECOJ SPECIFICATIONS Power-Open / Power-Close Rectangular HVAC Zone Damper Rectangular Static Pressure Controlled Bypass. Safe-Air Dowco's installation notes are applicable to fire dampers, smoke dampers and combination dampers on most occasions. Free Shipping by Amazon. Items 1 to 9 of 55 total. I am having a problem with the rectangular duct dampers disappearing in section view. place one half on the floor 2. Conform to the requirement in the referenced standards for metal thickness, conduits or tie rod applications and joint types. The Duct Store carries out a method to ensure that our customers maintain a high standard of quality and satisfaction. Attaining indicated thickness with multiple layers of. Damper Models 201, 202 and Backdraft Dampers can be furnished in rectangular configurations using our custom fabrications. installation of the larger Ductmate 45 Snap-On cleat. Install in Any Orientation Without Sealants or Solvents. metal or flexible duct, seal joints with UL181 foil tape. For more videos or to ask Shell a question on any home improvement topic, go to http://askshell. It's designed with a 7 inch round duct outlet, but that could be adapted to a different size for many reasons. ) Some Passivhaus builders don't install a range hood fan that is ducted outdoors. Install dampers so actuator is visible for inspection and accessible in the event it would ever need service. This episode dealt with a number of “DIY” heating and cooling projects including the installation of a supply register & a return air vent to an unfinished basement. Master Flow's Rectangular Stack Duct is used for HVAC system applications between wall studs as supply and return ducts, and to vent range hoods, kitchen and bath fans between walls as well. TrueZONE Rectangular Parallel Blade Damper - Overview The ZD is a power close and spring open damper. Back Draft dampers are commonly installed in fan exhaust systems to prevent a back draft of outside air when the fan is off. To align parts in the attic, we transitioned to 7" round duct and back to 3. Heavy Duty Steel housings with welded seam construction. As with testing dynamic fire dampers, testing a smoke damper should be done under normal airflow conditions to confirm no impediment to operation exists due to rust or damaged blades. When they are wide open, the pressure drop is the same for both types. Helps control air movement in the warm air supply to maintain static pressure. Fan discharge duct 5. ac duct damper Products List : 10-in HVAC Damper Duct Manual Volume Damper with 10″ x 6″ x 6″ Duct Wye Branch HVAC Ductwork AC Duct. RECTANGULAR VAV DAMPER ERVA ERVA is a rectangular VAV damper for OPTIVENT system. space to install a bypass duct, not being able to use a bypass due to state regulations or just not wanting to spend extra time and money on install-ing a bypass duct and damper. This is Part 1 of a two or three part series on this topic. That way, it's possible to regulate the airflow by adjusting the position of the damper. Be sure the CFM rating on the fan matches the size of your room. INSTALLATION INSTRUCTIONS WALL MOUNT LINER INSERT Read All Instructions Thoroughly Before Beginning Installation WARNING - TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING: A. A Static Pressure Regulating Damper (SPRD) is used to bypass excess airflow from the supply duct into the return duct. Rectangular Damper Included. RFD sizes go from 6x6 to 24x12. Complies with the latest DW144 leakage specification. 5 Installation Instructions. CZRD CZRD Series (patented design) • Eliminates the need for a bypass damper, cutting system costs while requiring less space and labor. Interlocking Steel Blades 22 ga. The outlet end of the terminal is designed for use with slip and drive duct connections. Key Type Damper of superior quality are being manufactured by us to meet varied requirements of air ventilation systems. Most exterior terminations for range hood fan ducts include a backdraft damper. See pages 11-14 for rough-in dimensions. These ultra quiet register booster fans are ideal when the duct run serving the room is not accessible to install a standard Tjernlund In-Line Duct Booster® fan. even when the damper blades are closed. Adjust airflow without accessing the ceiling Available with cable lengths of up to 15' Opposed blade action Rigid extruded aluminum frame. Conform to the requirement in the referenced standards for metal thickness, conduits or tie rod applications and joint types. Fire Damper Access Door. Available in 6, 8, 10 and 12 inch diameters. See item "HVAC Motorized Large Rectangular Zoning Damper" at EBAY store "Dampers Direct" for other sizes. Find quality hvac duct & fittings online or in store. Install the damper in the ductwork with the blades in horisontal or vertical position. — Do not weld dampers to the air ducts. Care must be taken not to obstruct the shaft from rotating when insulating. Spring Return Round Damper Installation Instructions > Pressure Relief Dampers. This pro-grade damper is one of the most dependable and popular models up for grabs. The flanges attach to the duct wall and have an integral mastic which allows the flange to seal itself to the duct. The purpose of Residential Ductwork Design is to properly distribute the airflow, produced by your heating/cooling system, to your house. Open up the duct work. The DSQW-A rectangular multi-blade aluminium dampers can be used to control and isolate air flow in square ductwork. Steel Opposed Blade Damper, Duct Mounted. Rectangular Duct Damper Langdon, Inc. DO-IT-YOURSELF The Basic Hvac System and Ductwork Installation. The clamping system eliminates the need to caulk during installation, the areas where bugs can harbor, and remove the snagging areas that destroy the leak-free system. Drill holes in the damper flange if necessary (options L1 & L2). RE DAMP LISTING NO. Easy online ordering and next-day delivery available with 24/7 expert product support. Damper can be installed in any orientation (mounting side can be on either the bottom or the side of the duct). For over a decade, Leminar's Flotek Rectangular Duct. Be careful that the damper in the hood moves freely and is not obstructed by a poor fit with the ducting. I was really looking for something to almost shut off the flow and with the large gap this didn't do it. LOW LEAKAGE DAMPERS. Manual duct dampers, also known as spool dampers, are ideal for use as an inline damper and allow for manual air flow adjustments. Customer will receive a Duct & Damper. How to cut connect and install flex duct, flexible pipe for heating & air conditioning ventilation - Duration: 7:44. Can be controlled by individual thermostat. High-Efficiency Takeoffs are fabricated from both 26 and 24 gauge galvanized steel. Note: This drawing of the Bypass damper, Balancing Hand Damper, and Related duct work is intended to serve only as a guide. Most exterior terminations for range hood fan ducts include a backdraft damper. Transitions are needed in almost every duct run to change the size or shape of the ductwork. I would most definitely buy again if I ever needed another damper in the future. For example, ZD10x8 is a 10 in. Shell Busey repairs a heating duct and damper. (a) Assemble rectangular duct. Damper blade 126 is generally planar in shape, so that its thickness is significantly less than its height and width or diameter. Boots, registers and other fittings are not included. The gap between the outside edge of the damper plate and the inside wall of the duct when the damper plate is perpendicular to the air flow is way too large in my opinion. Honeywell Damper Adjustment Guide eHow - eHow How to www. RFD sizes go from 6x6 to 24x12. Visit our showroom or call 1-855-955-ALBO for a quote. This damper is easy to install and easy to checkout. The Honeywell ZD damper is a power close and spring open damper. — Higher settings can damage the electric actuator. damper that has the motor on the 10 in. Install backer rod and caulk. Internally Mounted Ventilators – Install Quick Specs VEN120I Installation Type & Discharge Direction Mounted inside hood canopy. See item "HVAC Motorized Large Rectangular Zoning Damper" at EBAY store "Dampers Direct" for other sizes. Dampers are shipped about 1/8 inch undersized in each dimension to insure they will fit in a standard size rectangular duct. Is it possible to install manual dampers in these ducts? The number 6" is written on the outside of the duct insulation. They should be located in areas that are easily accessible for adjustment. Page 3: Function Buttons System logic dictates system mode of operation. Adjust each air conditioning damper so it provides the right amount of air to each room. Including stainless and copper Custom Chimney Caps. For more videos or to ask Shell a question on any home improvement topic, go to http://askshell. I assume that's the size of the flexible duct. Ideal for use in high humidity or corrosive environments where building codes require a fire damper for the protection of ductwork. The 6" manual ones about $15-40 depending on type of duct and if round (cheaper) or square. Aluminum direct spiral duct mounted double deflection supply grille with radius end cap, 3/4" spacing with front blades parallel to short dimension S301FL Aluminum direct spiral duct mounted single deflection supply grille, 3/4" spacing with front blades parallel to long dimension. Questions persist regarding the details of this calving process, including whether there are characteristic precursory events such as ice slumps or pervasive crevasse opening before an iceberg rotates away from the glacier. In addition callouts are automatically added as fitting are placed. 12 Main Trunk Line Rectangular Duct Assembly Rectangular duct is manufactured in L shaped pieces which are connected using a snaplock system. SmartZone 6-Inch Air Duct Damper. Reduce AC Duct Leakage. INSTALLATION INSTRUCTIONS WALL MOUNT LINER INSERT Read All Instructions Thoroughly Before Beginning Installation WARNING - TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING: A. Visit our showroom or call 1-855-955-ALBO for a quote. In this video I show you how to lap your ducting the correct way to maximize the efficiency of your system and cut energy cost. Cut holes in each duct using a sheet metal duct cutter attached to a drill/driver. Fan body not securely attached 1. A Rectangular Barometric Damper is used to automatically bypass excess air when increases in duct static pressure occur due to closing of zone dampers. Care must be taken not to obstruct the shaft from rotating when insulating. The damper should also be at least 3 ft. Ask questions and measure your duct carefully and ensure you order the correct size. Damper can be installed in any orientation (mounting side can be on either the bottom or the side of the duct). Remove the fasteners from the damper, connect it to the duct through these holes and into the drilled holes, and tighten. You might be able to increase the fan speed, but that may exceed the capacity of the ducts, or make them noisier. The fan is on, the damper is open and the other registers have airflow. Excess pressure will jam damper blades. Peter to Fig. I assume that's the size of the flexible duct. I am having a problem with the rectangular duct dampers disappearing in section view. They are manufactured from the highest quality galvanized sheet metal and to our exacting standards. Complexity of the Ducting - Some of the other factors enter into this - house size and layout, where the ductwork is located, age of the house and ducts, etc. TrueZONE Rectangular Parallel Blade Damper - Overview The ZD is a power close and spring open damper. Order DAYTON Rectangular Balancing Damper, 12x8, 22CV83 at Zoro. Ductwork installation cost is $5. Start Collars from The Duct Shop are an economical way for starting a new duct run from your supply or return plenum. The finest damper and motor combination is available in different sizes to suit any duct opening requirement. Zoning System Design Manual 70-2321—03 Size the Bypass Damper Install between supply and return. Remove the fasteners from the damper, connect it to the duct through these holes and into the drilled holes, and tighten. Tuning it either left or right will damper down the air flow. Personally I don't like this kind of installation, but a homeowner decided to build a master bedroom, master bathroom, two laundry rooms and two additional rooms above two and three car garages with a bridge. These dampers use 24-vac direct-drive actuators for smooth, quiet performance. Steel Opposed Blade Damper. It is important to properly size and install a pressure relief damper as well as properly balance the zones. Balancing dampers are simply manual dampers encased in a galvanized sheet metal sleeve. Below of two pictures of the pieces I want to take apart and install the dampers. Instead of using a thermostat to control the comfort level in each zone, the user can open or close specific dampers with a wireless remote control. Various manufacturers produce dampers, including Honeywell, and these dampers can be adjusted to increase or decrease the volume of air that passes through the individual ducts. The AutoCAD HVAC Add-on also creates ducting using parametric 2D/3D menus and males the creation of round, square and rectangular duct and fittings very easy. Looking for DAYTON Rectangular Fire Damper, Static, Vertical (2TGA5)? Grainger's got your back. These pieces are connected to distribute air throughout the house. Vertical Section 4-7/8” Rollformed Steel Frame 22 ga. The consulting engineer who designs a system's duct work typically calculates damper sizes as part of the overall air distribution system. The following information may vary among different manufacturers and should not serve as a general guide of damper installation. metal or flexible duct, seal joints with UL181 foil tape. Q: Hello, I want to install a Balancing Damper into an existing flexible ducting line. The damper is beneficial in open areas that have multiple diffusers and one thermostat. Steel Opposed Blade Damper. Find and examine your range hood duct before buying a damper. damper that has the motor on the 10 in. * IMPORTANT: If a rectangular-to-round transition adaptor is used, the bottom corners of the damper will have to be cut to fit, using the tin snips, in order to allow free movement of the damper. SmartZone 6-Inch Air Duct Damper. Take-offs may be fitted into round or rectangular openings cut into the wall of the main duct. Items 1 to 9 of 55 total. It has a 24-volt motor used to control circulating air in heating, cooling and ventilating systems. Conform to the requirement in the referenced standards for metal thickness, conduits or tie rod applications and joint types. Fan body not securely attached 1. Mastic or UL approved duct tape should be used to further seal the joints. Aluminum direct spiral duct mounted double deflection supply grille with radius end cap, 3/4" spacing with front blades parallel to short dimension S301FL Aluminum direct spiral duct mounted single deflection supply grille, 3/4" spacing with front blades parallel to long dimension. *rectangular duct is most commonly used and recommended due to its air flow characteristics and ease of installation. 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. Preferably this damper is motorized and electronically-controllable. (SMC) TDC, Slip/Drive and Raw Sheet Metal Connectors, Inc. Dampers and measuring units - ventilation ducting for measuring, shutting off, constant flow and variable flow. Straight Duct (6" Round) 12 Ft. DuctWorks has appeared on an episode of the Weekend Handyman seen on the DIY Network. side; but a ZD8x10 is a 8 in. Most exterior terminations for range hood fan ducts include a backdraft damper. After you determine where the duct is and where you wish to install the damper, measure the diameter of the duct. The square/rectangular by-pass damper has a 5” wide end plate to cover over the opening. Damper not working properly or damaged 3. Duct Fire Dampers. (SMC) TDC, Slip/Drive and Raw Sheet Metal Connectors, Inc. In most cases the air in a duct is assumed to be incompressible, an assumption that overlooks the change of air density that occurs as a result of pressure loss and flow in the ductwork. With a sturdier frame, the damper installs in the duct much faster and easier and the nylon bushings insure quieter operation. RectangularFireDamper1 "FireDamper (Vertical)" Rectangular Fire Damper (Vertical) — Vertical mount rectangular fire damper for ease of installation. Round dampers can be installed in air handling systems with spiral-wound ducts in sizes similar to rectangular ducts. Open the dampers in ducts that lead to rooms that are too warm. If dampers are provided with link tabs instead of wire clips, install link and bend tabs to.