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No more need to go into tight crawl areas or climb |
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One of the most important issues in the HVAC industry today is Total Comfort. A lot of research and development is being done in this area. Customers are demanding comfort that comes from a well designed system which includes proper equipment selection and a duct system that can be easily controlled for proper zoning and balancing. Balancing is perhaps the most overlooked but one of the more important stages of the total design and installation. This is the final step for assuring total comfort throughout. Typically, the use of conventional dampers for balancing is very unsatisfactory because they are located at the main duct take-off which is located in attics, crawl spaces, between floors or in other areas that are inaccessible. Conventional damper balancing requires two people, or if done by one technician, requires many trips from the take-off to the outlet end or boot. This method is very costly due to the time involved and in many cases is not done at all due to the difficult process.
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NOTE: This damper is designed to be installed in the boot collar. (See exhibit A-1) Installation is made from the boot outlet by hooking the mounting plate hook onto the collar. (See Exhibit A-2) The damper is then secured by using 1 sheet metal screw. Adjust the damper by pulling the 90 degree metal bracket for proper CFM. No tools needed for adjustments. RETROFIT BALANCING DAMPER This balancing damper was developed to install in a run-out boot to control air volume (CFM) where no conventional damper can be installed. The installation is very simple. Bend the mounting bracket to conform to the angles of the boot surface. (See Exhibit A-2). Insert the damper assembly into the boot from the outlet, then connect the mounting bracket hook onto the round boot collar and pull forward. (See Exhibit A-2) Cut off any bracket that would extend beyond the boot outlet, and fasten with one sheet metal screw. To adjust air flow, position the damper disc where needed. Once set, the damper disc will not move and requires no tools to adjust. Air volume is controlled perfectly with NO NOISE!!! The damper disc has a 90 degree metal bracket installed at the top of the disk so that a simple adjustment tool, made from about an 18 in. piece of clothes hanger with a 3/4 inch 90 degree bend on one end, can be used to adjust the damper. When using this tool, most ceiling and sidewall defusers do not have to be taken off to make adjustments. NOTE: On some boots, the damper disc might come in contact with the top of the boot when moving the disc from a fully closed to an open position. If this happens, turn the assembly 180 degrees and mount on the other side of the boot. Again, if this is necessary, bend the mounting bracket to conform to the angle of the boot mounting bracket surface.
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Dampers install near the outlet of the duct run-out.